NC0004308_More Information (Received)_Focused Treatablility_Outfall 005_20221216

Focused Treatability
Study Work Plan
Badin Business Park
Badin, North Carolina
Prepared for:
Alcoa corporation
Prepared by:
EHS Support
December 2022

Focused Treatability Study Work Plan — Badin Business Park
Table of Contents
Table of Contents
1 Project Description and Goals 1
1.1 Project Description 1
1.2 Project Goals 1
1.3 Work Plan Organization 2
1.4 Project Approach — Adaptive Project Management 2
2 Background 5
2.1 Facility Description 5
2.2 NPDES Permitted Outfalls 6
2.3 Historical Mitigation Efforts and Fluoride in Outfall 005 10
2.4 Hydrogeologic Assessments and Fluoride Track Down Studies 11
3 Preliminary Technology Evaluation and Alternatives Screening 16
4 Scope of Focused Treatability Study 19
4.1 Task 1— Desktop Technology Review 20
4.2 Task 2 — Field Investigations 20
4.2.1 Task 2a — Sewer Salt Tracer Study 21
4.2.2 Task 2b — Excavation Works and Groundwater Extraction Points 21
4.2.3 Task 2c — Hydraulic Testing (Pumping) of Each Extraction Point 21
4.2.4 Task 2d — Facility Topographic Survey and Storm Sewer Study 23
4.3 Task 3 — Geochemical Testing of Water and Bench -Scale Studies 23
4.4 Task 4 — Field -Based Pilot Testing 25
5 Schedule and Reporting 27
6 Management and Staffing 29
7 References 30
EHS Support LLC

Focused Treatability Study Work Plan — Badin Business Park
Table of Contents
List of In -Text Figures
Figure 1-1
Figure 2-1
Figure 2-2
Figure 2-3
Figure 2-4
Figure 2-5
Figure 2-6
Figure 2-7
Treatability Study Adaptive Management Plan Decision Tree
Facility Layout
Stormwater Catchments and Permitted NPDES Locations
Stormwater Network and Key NPDES Outfall Locations
Historical NPDES Outfall Concentrations at Outfalls 005
2021 Electro-Magnetic Electrical Conductivity Survey Map
Storm Sewer Maximum Inverts and Areas Where Storm Sewers Intercept PWR
Groundwater
2021 Historical Track Down Study Data and Areas of Interest for Treatability Study
List of Attached Tables
Table 1
Table 2
Table 3
Table 4
General Response Actions
Remedial Technologies
Remedial Alternatives
Remedial Alternative Data Gaps
List of Appendices
Appendix A
Appendix B
Hydrogeological Conceptual Site Model Update
EVOQUA Standard Analytical Testing Regime
EHS Support LLC ii

Focused Treatability Study Work Plan — Badin Business Park
Acronyms
Acronyms
ABL Alcoa Badin Landfill
AOC area of concern
CERCLA Comprehensive Environmental Response, Compensation, and Liability Act
CMS Corrective Measures Study
CSM Conceptual Site Model
HCSM Hydrogeological Conceptual Site Model
mg/g milligrams per gram
mg/L milligrams per liter
NAVD88 North American Vertical Datum 1988
NCDENR North Carolina Department of Environment and Natural Resources
NCDEQ North Carolina Department of Environmental Quality
NFA no further action
NFI no further investigation
NPDES National Pollutant Discharge Elimination System
OBL Old Brick Landfill
PWR partially weathered rock
RCRA Resource Conservation and Recovery Act
RFA RCRA Facility Assessment
RFI RCRA Facility Investigation
SWMU solid waste management unit
TA treatment alternative
USEPA United States Environmental Protection Agency
Trademarks, trade names, company, or product names referenced herein are used for identification
purposes only and are the property of their respective owners.
EHS Support LLC iii

Focused Treatability Study Work Plan — Badin Business Park
Project Description and Goals
1 Project Description and Goals
1.1 Project Description
This Focused Treatability Study Work Plan (Work Plan) has been developed in support of evaluating the
alternatives for the management of fluoride -impacted water discharged from the Badin Business Park
(Site), such that the Site may achieve compliance with the National Pollutant Discharge Elimination
System (NPDES) fluoride discharge limits (1.8 milligrams per liter [mg/L]) at Outfall 005. The source of
fluoride exceedances at Outfall 005 is infiltration of groundwater into the aged stormwater conveyance
system. Recent efforts to plug the piping have resulted in material benefits and lowering of fluoride
concentrations at Outfall 005. Fluoride -impacted groundwater is still entering the piping in areas where
infrastructure intercepts the PWR. This workplan details supplemental investigations planned for 2023
that are aimed at verifying this conceptualization and determining an appropriate mitigation measure.
This Work Plan also includes the Hydrogeological Conceptual Site Model (HCSM) Update (EHS Support,
2022) prepared by EHS Support and submitted as Appendix A. The HCSM Update findings provide
insight into why recent remedial efforts have demonstrated improvement, but not consistent
compliance with, permitted discharge limits. An understanding of the HCSM Update is essential, as this
Work Plan introduces works to build upon the HCSM findings. Although a summary of the HCSM Update
is provided (Section 2), a review of the HCSM Update is also recommended to provide a more thorough
technical understanding of the need for certain work scope items.
1.2 Project Goals
The goal of this focused treatability study is to collect information on potential compliance pathways to
support a feasibility study. The feasibility study will review corrective measures to reduce fluoride
concentrations in stormwater below the NPDES discharge criteria without causing unintended
consequences. Based on a preliminary analysis of alternatives, the data collected will support the
evaluation of stormwater and groundwater management options as well as fluoride treatment options
at the Site. The proposed work is essential to determine the viability and practicality of various chemical
and physical treatment alternatives.
After completion of this work, a feasibility study for the selected corrective measure alternatives will be
submitted for review and approval to the North Carolina Department of Environmental Quality
(NCDEQ).
This Work Plan has been designed to achieve the following:
1. Identify potential compliance pathways to achieve NPDES discharge limits at Outfall 005,
through removal or migration pathway elimination. This will continue ongoing work to identify
the sources and mass fluxes of fluoride that can be practically managed or treated to achieve
compliance.
2. In combination with item 1, collect supplemental hydrogeological and geochemical information
that will support the evaluation of source removal, or alternative stormwater management
options.
3. Determine what methods can be used at this Site to capture or treat this mass flux or determine
if mass removal will facilitate the achievement of this goal.
EHS Support LLC 1

Focused Treatability Study Work Plan — Badin Business Park
Project Description and Goals
4. Determine if in situ rather than ex situ methods, or a combination of methods, can be used to
achieve compliance.
In the development of these goals, it is critical to consider that treatment methods (and associated
costs) are highly sensitive to the geochemical properties of the water and the volume of water that must
be pumped/treated; therefore, the hydrogeological conceptualization is critical. Surface water (sourced
from rainwater) and groundwater are geochemically different, which will have an impact on determining
pretreatment and treatment methods. Furthermore, groundwater from different aquifers (saprolite
versus partially weathered rock [PWR]) may also be geochemically different. Therefore, the aquifer
conveying fluoride- impacted groundwater and its associated geochemical properties must be
determined to effectively evaluate potential treatment alternatives.
1.3 Work Plan Organization
The remainder of the Work Plan is structured as follows:
• Section 2 focuses on the background of the Site, which is largely based on the HCSM Update,
with additional information on past actions taken at the Site.
• Section 3 includes a preliminary technology evaluation and alternatives screening for the Site,
which is necessary to plan the treatability study actions.
• Section 4 details the scope of work covered in this focused treatability study, as well as a
discussion of other phases of investigation that are currently planned and will be finalized after
receiving NCDEQ's input for this Work Plan.
• Section 5 outlines the schedule for the proposed work and planned reporting to NCDEQ.
• Section 6 details the proposed management and staffing for this Focused Treatability Study.
1.4 Project Approach —Adaptive Project Management
As mentioned, the work product from this planned scope of work will be the delivery of a feasibility
study with preferred management and treatment alternatives that have been selected for review and
approval by NCDEQ. However, an adaptive management process is proposed for use in the pursuit of
engineered solutions for Outfall 005. As defined in the United States Environmental Protection Agency
(USEPA) guidance (USEPA, 2018):
"Adaptive management is a formal and systematic site or project management approach centered
on rigorous site planning and a firm understanding of site conditions and uncertainties. This
technique, rooted in the sound use of science and technology, encourages continuous re-evaluation
and management prioritization of site activities to account for new information and changing site
conditions."
Adaptive management uses a feedback loop that results in continuous improvement. Each step is used
to inform the next step, and after action is taken, the performance is assessed and used to modify the
plan for the next set of actions. By proceeding in this systematic fashion, each step in the process is
accounted for and can build stakeholder consensus, while continuously moving forward. In this case, the
adaptive management process will be terminated when fluoride concentrations at Outfall 005 are
consistently below the regulatory limit. Figure 1-1 illustrates the adaptive management approach to
field investigations. Its development process looks ahead to potential outcomes of field activities and
identifies how the work will be adapted based on the performance of specific elements of the work.
EHS Support LLC 2

Focused Treatability Study Work Plan — Badin Business Park
Project Description and Goals
Preliminary
evaluation
of treatment
alternatives
Focused
Treatability Study
Work Pian
l
Initial Source
Identification
Sewer Salt
Tracer Study
CF<1.8mg/L
at outfall
r
Construct
Extraction Points
Success
Failure
Modify
Extraction Point to
ncrease Flo
e
No change in CF
CF < Baseline and
CF > 1.8 mg/L at outfall
Extracted
Potential
Compliance
Pathway Identified
Water
Failure*
Notes:
005 = Outfall 005 and associated
storm sewers
CF = Concentration of Flouride
F = Flouride
mg/L = milligrams per liter
MNA = Monitored Natural
Attentuation
NCDEQ= North Caroline Department
of Environmental Quality
PWR = Partially Weathered Rock
Additional
PWR F Source
Identified?
Treatment Study hTreatment Not Effective
CF <1.8 mg/L at outfall with
treatment and discharge to 005
Potential Compliance
Pathway Identified
Remedial Design
L
Remedial Action
Operations, and
Maintenance
Feasibility Study
NCDEQ Review and
Remedy Acceptance
No
r
Investigate non-
PWR F sources
Expanding
groundwater plume
Stable or shrinking groundwater plume
MNA
Additional
Remediation
Long Term
Compliance
Figure 1-1 Treatability Study Adaptive Management Plan Decision Tree
EHS Support LLC 3

Focused Treatability Study Work Plan — Badin Business Park
Project Description and Goals
The adaptive management system will support an organized approach to define and implement an
engineered solution and will provide regular updates to stakeholders on the progress. The proposed
milestones and communications for this project are discussed in Section 5, with the goal of starting the
Corrective Action Design Phase in October 2023.
EHS Support LLC 4

Focused Treatability Study Work Plan — Badin Business Park
Background
2 Background
2.1 Facility Description
Areas where past operations occurred include 123-acre former Main Plant area, the 14-acre Alcoa Badin
Landfill (ABL) located 500 feet southwest of the former Main Plant, and the 3-acre Old Brick Landfill
(OBL) located 0.75 miles northeast of the former Main Plant. Badin Lake, located northeast of the main
plant, was filled in the early 1900s for hydroelectric electricity generation, and the Badin Business Park,
formerly known as the Badin Works Facility (Facility), operated from 1916 through 2007. In the mid-
1960s, potlines were redesigned and expanded at the Facility. Production output was lowered in 2002,
ceased in 2007, and the Facility was permanently closed in 2010. Several buildings have been
demolished since 2012. Figure 2-1 shows the current Facility layout.
Note: Yellow dashed lines indicate ground elevation in units of feet (North American Vertical Datum 1988 [NAVD88]).
Figure 2-1 Facility Layout
Before closure, the facility generated approximately 2,700 tons per year of spent potlining from the
production of aluminum metal. The USEPA considers spent potlining to be a hazardous waste that may
pose a substantial hazard to human health or the environment when improperly transported, treated,
stored, disposed of, or otherwise managed. On March 30, 1992, the facility was issued a Hazardous
EHS Support LLC
5

Focused Treatability Study Work Plan — Badin Business Park
Background
Waste Management Permit to store spent potlining. The facility previously contained two hazardous
waste management units (Buildings 206 North and 206 South) for spent potlining waste (K088). Building
206 North was a containment building, while Building 206 South was a container storage building. Both
buildings were closed in July 2012. Since closure of the plant and the two hazardous waste management
units, the facility does not regularly generate hazardous waste and does not contain any operational
units where hazardous waste is (or will be) treated, disposed of, or stored.
The Hazardous Waste Management Permit required the identification and investigation of solid waste
management units (SWMUs) and areas of concern (ADCs) for potential adverse impact to the
environmental media at the facility. A total of 49 SWMUs and AOCs have been identified. The Resource
Conservation and Recovery Act (RCRA) Facility Assessment (RFA) Report (A.T. Kearney, 1990) includes
information for SWMUs 1 through 34 and AOCs A and B. Information for SWMUs 35 through 47 was
provided in subsequent correspondence to what is now the State of North Carolina Department of
Environmental Quality (MFG Inc, 2001).
As part of the RFA and subsequent processes, it was immediately determined that no further action
(NFA) was required for 22 SWMUs. Confirmatory sampling was conducted at 5 units, samples
demonstrated that no further investigation (NFI) was required. NFI was determined for 2 units, while 18
units were further investigated under the RCRA Facility Investigation (RFI) process, and 2 storage units
were to be permitted. The results of these extensive investigations were evaluated and summarized in
the March 1990 RFA Report (A.T. Kearney , 1990), June 1993 Confirmatory Sampling Report (Law
Environmental, Inc. 1993), and March 2001 RFI Report (MFG Inc, 2001). The RFI Report was approved by
the North Carolina Department of Environment and Natural Resources (NCDENR) on December 19,
2007.
As a result of the investigations, interim measures, and remedial actions conducted to date, NFA or NFI
status has been granted for all or a portion of 43 SWMUs. The two permitted storage units were
properly closed. A portion of 9 SWMUs — including the groundwater at the Main Plant Area,
groundwater at SWMU No. 2 (ABL), and groundwater at SWMU No. 3 (OBL) — were carried forward to
the Corrective Measures Study (CMS).
With the December 19, 2007, approval of the RFI Report (MFG, Inc., 2001), the CMS process was
initiated to identify and evaluate remedial alternatives to address potential adverse impacts to the
environment. CMS reports are currently under review by the NCDEQ, formerly the NCDENR.
2.2 NPDES Permitted Outfalls
The Facility historically had a range of NPDES outfalls associated with the operation of the plant and the
former waste areas including the ABL and OBL. NA in the Drainage Area Information table indicates not
applicable.
Figure 2-2 documents the NPDES permit outfalls contained in the April 2022 NPDES No. NC0004308
Permit Renewal (Alcoa, 2022). In accordance with the permit application, NPDES Permit Outfalls 005,
011, 012, 013, and 019 are permitted for non -process wastewater (NPDES Form 2E) while all NPDES
locations are permitted for stormwater discharges associated with an industrial activity (NPDES Form
2F). NA in the Drainage Area Information table indicates not applicable.
EHS Support LLC 6

Focused Treatability Study Work Plan — Badin Business Park
Background
Figure 2-2, Outfalls 002, 011, 012, 013, 020, and 019 discharge to Badin Lake. Outfalls 004, 005, and 017
discharge to an unnamed tributary to Little Mountain Creek. The current storm sewer drainage system
and associated outfalls for the former Main Plant are shown on Figure 2-3.
EHS Support LLC 7

Focused Treatability Study Work Plan — Badin Business Park
Background
0 400 800
Feel
ISOURCE: ESN WORLD IMAGERY
ESRI WORLD IMAGERY f ARCGIS MAP SERVICE: RTTPOGOTO ARCGISONLINE.COM/MAPS)WORLD_ IMAGERY ACCESSED 0/29f2022.
Outfall 017
Outfal 1005
Badin Lake
Weir/Pump System
Outfall 002
9
7
9
10
11
12
00 03
1947
19.52
939
5.29
20.11
090
02 94
5.3C
32.35
2-13
3 70
013
011 & C22
002
C29
NA -Sheet
Flow
1109
NA- Sheet
Flow
w5
017
018 G 022
NA -Shen
Flow
019
Outfall 019
Reiter ted
Diedmme
Of-un:weter&
Stammerer
Groundwater,
stormwerer, & Fire
Proteol,on Water
stolmwater
stormwarer
skormwater
-
SheetFlRw
ltumrwater
Stdrmwater-
Sheet FIpw
Groundwater.
Stormwater,& Fire
Praten.on Water
Sttmmwater
Stamrwater
Stdrntwater-
StreetFlow
Overflow from
Retention Pond
Badin Lake/
Yadkin River
Badin lake/
Yadkin River
Bedin Lake/
Yadkin River
Bailin Lake/
Yadkin River
4ttle Mountain
Creek
little Mountain
Creek
lime Mduntaln
Creek
little Mountain
Creek
Uttle Mountain
Creek
Little Mountain
Creek
Little Mountain
Creek
Bailin lake/
Yadkin River
NA in the Drainage Area Information table indicates not applicable.
Figure 2-2 Stormwater Catchments and Permitted NPDES Locations
EHS Support LLC 8

Focused Treatability Study Work Plan — Badin Business Park
Background
Street
adin
Landfill,
Note: Red, yellow, blue, green, orange, and teal colors indicate sections (piping) of the storm sewer system directed to specific
outfa I Is.
The black lines indicate the approximate boundaries of the former Main Plant and the Alcoa Badin Landfill.
Figure 2-3 Stormwater Network and Key NPDES Outfall Locations
EHS Support LLC
9

Focused Treatability Study Work Plan — Badin Business Park
Background
2.3 Historical Mitigation Efforts and Fluoride in Outfall 005
The termination of Facility operations, followed by decommissioning operations (including the removal
of products and waste), and completing upgrades to the caps and drainage around the SWMUs have
resulted in declines in the fluoride concentrations observed across the Facility, including Outfall 005.
Surficial sources of fluoride have been identified and addressed with a combination of removing waste
and contaminated soil along with cleaning the manholes, catch basins, and drains, all of which
contributed to the declines in fluoride at Outfall 005 (Figure 2-4). The average fluoride concentration for
Outfall 005 decreased from 3.57 mg/L to 1.94 mg/L, which is only slightly above the 1.8 mg/L NPDES
limit.
25
5
2010
Outfall 005 Fluoride Compliance by Month
0 0
o0
n O
O
O 00 0 0 0 �▪ O
cca
O
Oo
0
0
o Monthly AVG
o Monthly MAX
Mean Fluoride
Before Nov. 2019=3.57 mg/L
0 0 0
0b, O O c1,.. q., �,,y,
v cPCP O 007SY7 0 N u-O O WO 07 `Rir' �Cc ocoo "O�� p0 gg CR
0
1.8 ma/L Monthly Average Fluoride Limit O
Mean Fluoride
After Nov. 2019=1.94 mg/L
2012
AVG = average
MAX = maximum
mg/L = milligrams per liter
2014
2016
Date
2018
2020
Figure 2-4 Historical NPDES Outfall Concentrations at Outfalls 005
2022
In combination with these source management efforts, the following key efforts have also been
conducted:
1. Following the identification of groundwater ingress into the storm sewers, several track down
studies were completed that identified key areas of fluoride -impacted groundwater entry into
the storm sewer. As part of these works, new storm sewers were constructed where piping does
not interface with groundwater, several storm sewer sections were abandoned, and cement
plugs were installed to prevent groundwater from flowing along the pipe bedding.
2. The drainage on the western side of the Facility was modified to facilitate diverting clean surface
water around the potential contaminated areas and into the storm sewers leading to Outfall
005.
In July 2022 Alcoa completed a series of investigations to identify if clean groundwater from the PWR
upgradient of the former Main Plant area could be intercepted and diverted into the storm sewer
system. This would have the benefit of providing additional flows of water that would dilute fluoride
concentrations in the storm sewer and reduce the flux of groundwater toward an area of known
EHS Support LLC 10

Focused Treatability Study Work Plan — Badin Business Park
Background
contamination (west fill area). While rock cores identified water to be present within the PWR in these
areas, the test pits installed in the PWR, and underlying bedrock did not identify sufficient yields of
water (just seepage) to make this approach viable.
While this recent work was unsuccessful in providing sufficient dilution water to achieve compliance at
NPDES Outfall 005, the work did support the development of a more robust hydrogeological
conceptualization (Section 2.4). This new conceptualization has demonstrated that the PWR is the key
hydrostratigraphic unit in which groundwater migrates (primarily in the north -to -south direction). It also
has identified that areas where storm sewers intercept the PWR most likely account for the ingress of
fluoride -impacted groundwater into the storm sewer. This development is extremely significant in that
past mitigation efforts were based on a generalized Conceptual Site Model (CSM) and HCSM which
considered a generally uniform west -to -east groundwater flow.
2.4 Hydrogeologic Assessments and Fluoride Track Down Studies
Extensive investigations were completed in 2022 to better define the HCSM flow regime and potential
interactions between groundwater and stormwater drainage systems. This HCSM is provided as
Appendix A and includes a broad hydrogeological assessment of the former Main Plant and ABL.
The investigations completed at the Facility (and documented in the HCSM Update) have demonstrated
that the primary mechanisms of groundwater transport at this Facility occur within the PWR, which is
being recharged through infiltration in the upland portions surrounding the Facility (predominantly to
the west) and Badin Lake (which is in direct hydraulic communication with the PWR), which has higher
water elevations than the groundwater system immediately adjacent to the lake. Groundwater flow
within the PWR is to the south towards Little Mountain Creek which has an elevation 40 feet below the
average water levels in Badin Lake as documented in the HCSM Update (Appendix A).
In the historical development of the Facility, the overburden and saprolite materials were removed from
large portions of the western and southern portions of the Facility and were used as fill materials. The
result is that in many areas the PWR is at or close to the ground surface and covered by a thin cover of
fill. Sections of building structures and stormwater drainage systems were constructed into the PWR.
The installation process included excavation to below the water table. In some areas, excavation to
install the storm sewer pipe penetrated the overlying fill or confining soils and directly intersected the
PWR, allowing for infiltration of groundwater into discontinuities in the pipe or flow around the pipe.
The presence of this preferential flow allows the groundwater to find points of infiltration along the
pipe, contributes to the observed groundwater flow regime, and contributes to the presence of fluoride
in stormwater.
An assessment of the hydraulic properties of the PWR was completed in 2022 and demonstrated that
the highly conductive PWR aquifer extends across the entire Facility. Within the main area of the plant,
groundwater elevations measured in PWR wells were generally stable (primarily due to the leakage from
Lake Badin into the PWR aquifer). The stability of groundwater levels and infiltration of groundwater
into the stormwater pipes provide an explanation for the base flow at NPDES Outfall 005 that is
observed during prolonged dry conditions. Furthermore, the highly conductive nature of the PWR has
likely resulted in groundwater flow around cement plugs that were established as interim measures to
reduce the infiltration of impacted groundwater into the stormwater drainage pipes and the flow
EHS Support LLC 11

Focused Treatability Study Work Plan — Badin Business Park
Background
around these pipes. As shown in Figure 2-4 these interim measures have been partially effective
(concentrations have been observed to decline), however, sustained compliance has not been achieved.
Subsurface geophysics (using electrical conductivity and resistivity surveys), which were conducted
during previous investigations, has identified areas of higher conductivity in groundwater near the
stormwater drains. Whereas conductivity correlates with areas of higher salinity (and therefore
potentially higher fluoride), the relationship between electrical conductivity and fluoride is not linear.
The areas where stormwater drains are constructed into the PWR and also exhibit higher electrical
conductivity are the key focus areas for the treatability study. Based on the potential presence of
fluoride and the higher hydraulic conductivity of the PWR, these areas are considered to provide
sufficient mass flux to explain the concentrations detected at Outfall 005. Termination or interception of
the flow from these sections of the storm sewer would have a high chance of reducing the fluoride mass
flux sufficiently to achieve compliance with the NPDES limits.
Figure 2-5 depicts a 2021 electrical conductivity survey conducted at the Facility. It shows areas of
higher electrical conductivity within groundwater to the north and west of the potlines. This includes an
area where historical groundwater seep activity has been observed hydraulically downgradient of the
west fill area. As shown in Figure 2-5, a major soil excavation was completed in the area of the former
Bath Mill to remove fluoride -impacted soils that were a potential source of fluoride to groundwater.
EHS Support LLC 12

Focused Treatability Study Work Plan — Badin Business Park
Background
Former Bath Crushing Mill
Excavation Extents
t
Area where st
Drains were
LEGEND
32, 190 Hz Apparent Conductivity (mS/cm)
-100 -145 -110 -75 40 5 30 65 100 115 170 1000
Map Scale (ft)
0
130 250
1"=130'
ormwater
capped
Fizure
5
Multi -Frequency EM Evaluation
2021 Apparent Conductivity Results Map
Badin Business Park
Badin, NC
GEOPHYSICAL EVALUATION
Goa Solutions Ltd_
Figure 2-5 2021 Electro-Magnetic Electrical Conductivity Survey Map
EHS Support LLC 13

Focused Treatability Study Work Plan — Badin Business Park
Background
As part of the 2022 hydrogeological investigations, an assessment of groundwater elevations and
historical stormwater sampling was completed. The assessment identified several areas of interest
where monitoring and hydrogeological data indicate potential contributions of fluoride -impacted
groundwater to the storm sewers.
Figure 2-6 depicts the storm sewer system; sections are shaded black to indicate where the storm sewer
is installed within PWR and groundwater.
LEGEND
- Str*Srr
- iktxm
- $t 'n $Q( IWY9f: Inie,Sep5 P44'a
Maxinur Uaiiy !wen Elea d
FHA k4VQffi
• 5iO
51D- 513
®523-515
II 515.5t5
Q 516-5SX
© 527-513
I] 533.519
519- 522
522 -533
MI > 533
amxtAto-
Figure 2-6 Storm Sewer Maximum Inverts and Areas Where Storm Sewers Intercept PWR
Groundwater
EHS Support LLC 14

Focused Treatability Study Work Plan — Badin Business Park
Background
Figure 2-7 depicts a combination of historical stormwater quality data, where the storm sewer is
installed within PWR, and areas of interest where impacted groundwater infiltration to the stormwater
pipes is possible. Water extraction and treatment activities will be conducted based on the systematic
assessment framework provided in Section 4.
MW-219 (8/18/20221
0.075 mg/L F
MW-218 (6/16(2022)
<0.0040 mg/L F
MW-39 (31222021)
<0.040 mg/L F
ctolo
betimaz
tUY:.urAdb4`oeK'1:J
ETTi :}2.6OOc
B301 (8/18/2022)
0.042 not F
CInsite
Landfill
MW-37 (3/22/2021)(
100 mg/0.F J
MW-33 (3/15/2021)
44 mg/L F
B300 (01172022)
<0.040mglLFSlurry
B305 (6/172022)
<0.0040 mg/L F
B303 (6/17/2022)
<0.0040 mg/L F
B302(8/17/2022)
<0.004(3 mg/L F
BF-5 (3/15/2021)
1.1 mg/LF
2.400 (3/172021)
2.3m0/LF
MW-103(3/3( 2.210
1.6 rrg3L2.6 mg/L F PO
2.200
2.7 mg/L
6 200 6'320 ' 2:100
2.7mg/LF
1 0-02 (31302020) ,.
0.14 mg/LF
0.37 mg/L F
8.620,m LETIMN
8;6101NLET MH
MW 46 (3/10/2021) _
88 mg/L F R.300 INLET MH
8.2001NLET MN
8.000INLET MH
MW-29 (31152021)
13 mg/LF
M W-35 (3222021)
6.3 mg/L F
West FIII Area Seep (31162021
11 mg/LF
Norm Sump (3/16/20211
6 mg/LF
7.000INLETMH
TW004 (4/13/2021)
6.6 mg/L F
251u
. �-2';ao TW003 (4113/2021)
4.8 mg/L F
,, T1l.6 TW002 (4/132021).
2510(3/16/2021) 5.5 mg/LF
• 1.1 mg/L F
1.500
4.020
T0001 (4/132021)
3.4 rrg/L F
4.240
MW-104 (3/30/2020)
1.6 mg/LF
MW-31 (3/30/2020)
<0.040 mg/L F
Outfal 005 (3/17/2021)
2.1 mg/L F
Grove
002E FLOW METERING
O Boring
9 Monitoring Well
ti Temporary Well
• Outfall
• Seep
• Stormwater Manhole
— Stormwater Pipes
— Shallow Stormwater Pipes
Camera Infiltration Observations:
Major
4mi• Minor
Possible
Water in Pipe
Pipe Intersects Partially Weathered Rock
- Storm Sewer Plugs
Notes:
mg/L= milligrams per liter
= fluoride
Figure 2-7 2021 Historical Track Down Study Data and Areas of Interest for Treatability Study
EHS Support LLC 15

Focused Treatability Study Work Plan — Badin Business Park
Preliminary Technology Evaluation and Alternatives Screening
3 Preliminary Technology Evaluation and Alternatives Screening
A preliminary technology evaluation and alternative screening were conducted to guide the actions that
will be included in the treatability study. The final feasibility study will build on the preliminary work
included in this section. The primary goals of the alternative screening evaluation are to:
1. Establish general response actions that can be pursued to achieve compliant discharge from
Outfall 005 (less than 1.8 mg/L of fluoride).
2. Screen remedial technologies and process options to ensure that only applicable technologies
are evaluated.
3. Develop a range of treatment alternatives (TAs) and screen each TA for effectiveness,
implementability, and cost.
An initial screening of candidate treatment technologies was completed to aid in the development of
the treatability study work plan and schedule. In accordance with RCRA and Comprehensive
Environmental Response, Compensation, and Liability Act (CERCLA) guidance documents for feasibility
studies, the "no action" option has been included in the screening tables, but it should be noted that
this option is a standard default and cannot be selected due to non-compliance. Using the current
understanding of the Facility, certain technologies are not retained for analysis based on low
implementability, low effectiveness, or high costs. However, depending on the results of this treatability
study, technologies that were eliminated in this preliminary evaluation may be revisited during the
feasibility study.
The general response actions include the following:
• No action
• Institutional controls
• Containment
• Removal
• Treatment
• Disposal
The general response actions are defined in Table 1 (attached). All general response actions are retained
for continuing screening.
A range of physical remediation methods have been employed at the Facility that are designed to limit
the infiltration of groundwater into the storm drains, evaluate the potential for groundwater diversion
as a means of minimizing fluoride -impacted groundwater flux towards and into the storm drains, and
provide a clean water source to lower fluoride concentrations below 1.8 mg/L at NPDES Outfall 005. The
remaining options for management of the fluoride flux in groundwater from the Facility are limited to
containment through pathway interception, treatment (both in situ and ex situ), and complete
abandonment and/or removal of the subsurface stormwater infrastructure in the subsurface. End -of -
pipe physical capture and treatment of stormwater at Outfall 005 is not considered practical or viable
based on the magnitude of flow variability (i.e., ranging from dry to several thousand gallons per
minute) and the low concentrations of fluoride present at the discharge.
Technologies associated with these management options include:
• No action
• Institutional controls
EHS Support LLC 16

Focused Treatability Study Work Plan — Badin Business Park
Preliminary Technology Evaluation and Alternatives Screening
• Storm sewer closure
• Groundwater removal via extraction point (sumps, wells, drainage coils, etc.)
• Combined stormwater and groundwater removal via pumping from existing manhole structures
• Permeable reactive barriers
• Spray irrigation/phytoremediation
• Treatment works — activated alumina sequestration
• Treatment works — bone char sequestration
• Treatment works — calcium oxide adsorption
• Treatment works — ion exchange resin
• Treatment works — reverse osmosis
• Treatment works — electrokinetic
• Coagulation/flocculation
• Discharge to on -site evaporation pond
• Discharge to sanitary sewer
• Discharge via Outfall 012
General treatment technologies are defined and discussed in Table 2 (attached). Of the treatment
technologies evaluated, a subset was selected for continued analysis.
The following treatment alternatives (TA) were developed using the technologies defined in Table 2
(attached):
• TA-1: No Action
• TA-2: Containment
• TA-3: In Situ Treatment
• TA-4a: Ex Situ Treatment — Spray Irrigation/Phytoremediation
• TA-4b: Ex Situ Treatment —Activated Alumina Sequestration
• TA-4c: Ex Situ Treatment — Bone Char Sequestration
• TA-4d: Ex Situ Treatment — Calcium Oxide Sequestration
• TA-4e: Ex Situ Treatment — Ion Exchange Resins
• TA-4f: Ex Situ Treatment — Reverse Osmosis
• TA-4g: Ex Situ Treatment — Electrokinetic Coagulation Flocculation
• TA-4h: Ex Situ Treatment — Chemical Coagulation Flocculation
• TA-5a: Removal/Disposal — Evaporation Pond
• TA-5b: Removal/Disposal — Sanitary Sewer
• TA-6: Discharge — Outfall 012
The TAs are screened for efficacy, implementability, and cost in Table 3 (attached). While all TAs have
been retained for data evaluation, this Work Plan will focus on collecting the data needed to evaluate
removal and TAs, specifically TA-4a through TA-4h. The data collected will also serve to support future
bench -scale and pilot testing programs.
This preliminary screening of in situ and ex situ fluoride treatment and management approaches will be
updated based on discussions with the NCDEQ. Potential data gaps for each TA that will require further
investigation are defined in Table 4 (attached). Badin Business Park is seeking NCDEQ feedback before
finalizing the alternatives that will be evaluated in depth during additional phases. Technologies retained
will be evaluated in subsequent steps including the bench -scale testing and pilot testing programs.
EHS Support LLC 17

Focused Treatability Study Work Plan — Badin Business Park
Preliminary Technology Evaluation and Alternatives Screening
In the application of the TAs, it is critical to note that the effectiveness of technology will be affected by
both treatment efficiency and the ability to access the key mass fluxes of fluoride resulting in
exceedances of the NPDES discharge criteria. An advantage of treatment, if viable, is that the treated
water, with concentrations well below 1.8 mg/L, can be discharged and/or continue to be allowed to
infiltrate into the storm sewer, further reducing concentrations of fluoride at the Outfall 005.
EHS Support LLC 18

Focused Treatability Study Work Plan — Badin Business Park
Scope of Focused Treatability Study
4 Scope of Focused Treatability Study
The treatability study is focused on addressing data gaps identified in Table 4 to provide data for the
feasibility study. The data collection will be focused on identifying the potential compliance pathways
through the removal and/or treatment of fluoride -impacted groundwater that is intercepted by the
Facility storm sewer system.
The general areas of interest for this scope of work, indicated by the red boxes on Figure 2-7, include
sections of storm sewer where the storm sewers intersect the PWR and where groundwater fluoride
concentrations have been observed to be greater than the NPDES Outfall 005 limits. As summarized in
Section 2 and expanded upon in the HCSM, the hydraulic conductivity of saprolite and/or native fill soils
(which includes the bedding materials around many of the shallow storm sewers) is low and the
corresponding potential flux of groundwater into the storm sewer is small. However, in areas where the
storm sewers are excavated into the PWR, the hydraulic conductivity of this unit and corresponding
potential fluxes of groundwater into the storm sewer are orders of magnitude higher. Furthermore, the
fluoride track down investigations confirm these observations and suggest a CSM where the fluoride
exceedances in stormwater discharging to NPDES Outfall 005 are mainly associated with the infiltration
of impacted groundwater into the existing storm sewer system from the PWR.
To validate this CSM and enable the development of a permanent management approach, the initial
groundwater extraction points will be constructed in the areas shown in Figure 2-7. The approach will be
to determine if the removal of defined areas of groundwater mass flux into the storm sewer can
facilitate compliance with NPDES discharge limits. This will require that groundwater pumping rates and
connectivity to the formation are sufficient to capture the localized flow in the PWR (and associated
mass flux into the sewer) and that the fluoride mass flux reduction results in compliance. Only through
systematic and targeted pumping of discrete areas with increasing levels of intensity can an approach be
developed for permanent achievement of the compliance criteria.
As shown in Figure 1-1, the treatability study will begin with a salt tracer study that will evaluate how
long groundwater resides in the stormwater system and its dilution in the stormwater system; this will
be conducted while the groundwater extraction points are being constructed. This salt tracer study will
help to define how long the groundwater resides in the stormwater system and provide additional
qualitative estimates of how much dilution occurs in different sections. As part of this process, extracted
groundwater samples (with potentially different geotechnical signatures) will be collected for analytical
testing and bench -scale evaluations. The data provided by the samples will be used to evaluate how
treatment can be effectively conducted. Collection of representative groundwater samples is imperative
to the development of an effective treatment solution (especially for fluoride). Fluoride is the most
electro-negative ion and has a very low molecular weight; therefore, it can be challenging to treat.
Minor differences in geochemistry can result in major changes in pretreatment requirements.
The treatability study will complete the following four tasks:
1. Task 1— Perform a desktop review of in situ and ex situ fluoride treatment technologies for
evaluation in subsequent phases of work. This task has been partially completed (Section 3) with
a preliminary screening of candidate technologies.
2. Task 2 — Conduct a field investigation focused on assessing the viability and means by which
impacted groundwater can be intercepted before entering the storm sewers.
EHS Support LLC 19

Focused Treatability Study Work Plan — Badin Business Park
Scope of Focused Treatability Study
3. Task 3 — Perform geochemical testing of water and bench -scale studies to assess the kinetics and
other considerations for in situ and ex situ treatment of fluoride -impacted groundwater.
4. Task 4 — Conduct pilot -scale testing of ex situ and in situ water treatment methods.
To meet the goals and objectives of this study, the work will complete the following:
1. Identify the locations where groundwater can be accessed that will provide a material reduction
in fluoride concentrations at Outfall 005 (and ultimately compliance with the NPDES fluoride
limit).
2. Demonstrate that hydraulic pumping can effectively lower water levels in the PWR (over a
prolonged period), limit the flux of groundwater into the storm sewers, and provide long-term
compliance with the discharge limits.
3. Quantify the fluxes of groundwater that need to be pumped and obtain water geochemistry
under pumping conditions so that vendor and bench -scale trials can be conducted to inform
potential treatment alternatives.
4. Evaluate the means and methods for the treatment of fluoride -impacted water.
5. Develop, test, and implement the preferred water treatment methods under field -based
conditions.
6. Evaluate other alternatives, including reconfiguration of the storm sewers, as an alternative to
achieving compliance at NPDES Outfall 005.
4.1 Task 1— Desktop Technology Review
Task 1 is focused on the identification and refinement of the list of candidate technologies for in situ and
ex situ treatment of fluoride in groundwater and was preliminarily completed in Section 3. The review of
likely technology alternatives is critical to inform the scope of the supplemental investigation (Task 2)
and bench -scale testing (Task 3) that will be conducted as part of this project. To facilitate effective
planning, a preliminary assessment of technologies is provided in Section 3. This will be finalized after
input from the agency, and subsequent tasks may be modified based on the finalized technology
evaluation. As shown in Figure 1-1, the desktop technology review is used to inform the feasibility of
TAs, which leads to identifying the data gaps that require further investigation.
4.2 Task 2 — Field Investigations
The field investigations will involve multiple components of work. The goals of the field investigations
are as follows:
1. Verify and validate the findings of the fluoride track down studies and hydrogeologic
conceptualization (Section 2.4) and demonstrate that the areas where the storm sewers extend
into the PWR (where fluoride impacts are present) are those that contribute to fluoride NPDES
exceedances.
2. Establish subsurface infrastructure that can support the removal of impacted groundwater and
enable evaluation of the benefits of prolonged pumping in reducing the infiltration of
groundwater into the storm sewer and associated declines in fluoride in NPDES Outfall 005.
3. Complete field inspections of the storm sewers and surveying of the Facility to aid in an
engineering study that would look to replace or re -engineer the stormwater drainage systems.
This could include replacing sections of the storm sewer system and/or abandoning the
subsurface pipes to eliminate groundwater ingress (replacement with lined surface drains that
do not have hydraulic communication with groundwater).
EHS Support LLC 20

Focused Treatability Study Work Plan — Badin Business Park
Scope of Focused Treatability Study
4. Complete long-term pump testing to assess the hydraulic connectivity of the location to the
aquifer matrix and responses in adjacent monitoring wells and to flows within the storm sewer.
5. Support collection of groundwater chemistry and geochemistry data (under equilibrium
pumping conditions) that can be used in vendor assessments, geochemical modeling, and
bench -scale technology trials (Task 3).
6. Use the installed groundwater extraction infrastructure as part of the field -based pilot testing
program (Task 4).
It should be noted that the groundwater pumping locations will be selected such that the effects of
discrete pumping in select areas can be assessed to define a long-term solution to achieving NPDES
compliance. The proposed program of works can commence immediately/simultaneously with agency
review and finalization of the Task 1 Desktop Technology Review. The proposed program of works will
include Tasks 2a through 2d.
4.2.1 Task 2a — Sewer Salt Tracer Study
The salt tracer study will consist of introducing known quantities and concentrations of salt water to
sewer sections upgradient of Outfall 005. Downgradient manholes will be equipped with conductivity
meters with data loggers. The conductivity meters will pick up the presence of the salt. Data collected
will include the time required for the salt water to be conveyed between various manhole structures as
well as quantitative data on the magnitude of infiltration between points based on variances in
conductivity. As shown in Figure 1-1, the study will be used to inform the short-term pumping test and
confirm the results of the track down study.
4.2.2 Task 2b — Excavation Works and Groundwater Extraction Points
Test pits will be conducted in the primary focus area which is located to the northeastern extent of the
Outfall 005 storm sewer (east of the west fill area) and adjacent to the existing stormwater drains
(where the highest concentrations of fluoride have been observed). A secondary location will be
selected further south near the former Bath Mill area as a conservative location for encountering
groundwater (noting that the Bath Mill excavation discussed above did encounter groundwater at this
location). If groundwater is present higher than 1 foot below the invert of the stormwater pipe, a
groundwater extraction point (sump with drainage coil, or similar design) will be installed into the PWR
to a minimum depth of 3 feet below the invert of the stormwater pipe or the water table (whatever is
lower). This extraction point will be constructed in a manner that any preferential flow along the storm
sewers is directed to the extraction point. Figure 1-1 shows how extraction point construction will lead
to short-term pump testing; depending on the results of short-term pumping, extraction point
construction may be revisited to increase flow.
Where locations are identified as dry or with insufficient flow (Task 2b), additional recovery extraction
points (at alternative locations) will be installed in the area to support groundwater removal and
treatment.
4.2.3 Task 2c — Hydraulic Testing (Pumping) of Each Extraction Point
Initial hydraulic testing of the extraction points will be conducted to determine several key factors
critical to the design. Each extraction point will be equipped with an electrical submersible pump (with
EHS Support LLC 21

Focused Treatability Study Work Plan — Badin Business Park
Scope of Focused Treatability Study
integrated float switches) and the pump will be routed to an open -top frac tank, pond, or similar
containment vessel for temporary storage before discharge to the NPDES Outfall 012 storm sewer. This
discharge is proposed as a temporary measure until the source of exceedances has been identified and
sufficient design information is available to begin the bench -scale and pilot testing of treatment
technologies.
Water must be redirected from Outfall 005 to an alternate discharge location (e.g., Outfall 012) to
enable the downstream assessment of changes in flow and fluoride concentrations in the storm sewer
and outfall discharge. This will mimic the outcome of using a treatment or water management option
while providing information critical to the design of the pilot system as well as the final remedy.
Affirmative confirmation that the management of an identified mass flux will result in improved water
quality and cessation of fluoride exceedances at Outfall 005 is an essential element of this work
program. The water redirected to Outfall 012 drainage basin will comply with established permit
discharge limits and will be significantly less than the calculated chronic and acute criteria evaluated
under the existing NPDES permit ("Final NPDES Permit," 2019). The volume of water to be discharged to
Outfall 012 will be below the maximum flow capacity of the outfall and may have to be throttled during
larger storm events to avoid an overflow condition to Outfall 011.
The hydraulic testing program will be conducted in several stages:
1. Short-term hydraulic pumping (a maximum of five days — daytime operations only) will be
conducted to confirm the hydraulic efficiency of the extraction point and determine equilibrium
pumping rates. A flow totalizer will be installed on the discharge of the pump to measure flows
over the period. As shown in Figure 1-1, depending on the outcome of the initial short-term
pumping tests, work may progress in two directions. If the test determines that sufficient flow is
being intercepted, the extraction point will progress to the long-term pumping test as
constructed. If the extraction point is producing insufficient flow, the extraction point may be
modified to increase yield. If extraction point modifications are unsuccessful, efforts will be
made to identify additional locations to intercept the groundwater in the PWR. If those efforts
determine promising extraction point locations, extraction points will be relocated and undergo
the same process. If no promising extraction point locations are determined, potential fluoride
sources outside of the PWR will be investigated.
2. Long-term hydraulic pumping will be conducted to assess the hydraulic connection of the
extraction point to groundwater water levels in the area and flows within the storm sewer, as
well as changes in water quality in the downstream storm sewer system. It is proposed that a
combination of the following methods will be used to assess the performance of long-term
pumping:
a. Where practical, measure flow at Outfall 005 and other manholes.
b. Look for changes in stormwater flow in upstream and downstream manholes on either side
of the pumping tests.
c. Measure the groundwater levels in proximal wells to the recovery extraction point.
d. Routinely measure fluoride concentrations from manholes downstream of the pumping in
combination with the NPDES-specified monitoring at Outfall 005.
The length of the long-term hydraulic pumping tests is unknown as it is uncertain how long it will take
for equilibrium to be reached in the testing and/or for the responses to be observed downstream. It is
anticipated that the long-term testing will not last longer than three months at any one location, with
the two planned areas of pumping potentially requiring a total of six months. Further in the
northwestern section of the western seep (downgradient of the West Fill Area), the extent of the area
EHS Support LLC 22

Focused Treatability Study Work Plan — Badin Business Park
Scope of Focused Treatability Study
where PWR groundwater is in hydraulic communication with the storm sewer is large and multiple
extraction points may need to be installed in this area to eliminate groundwater ingress into the storm
sewer; pumping at these locations will occur simultaneously.
As shown in Figure 1-1, the long-term pumping test is expected to have one of three potential
outcomes:
• Reduction of fluoride concentrations at Outfall 005 to below the 1.8 mg/L discharge limit.
• Reduction of fluoride concentrations at Outfall 005, but not to below the 1.8 mg/L discharge
limit.
• No relevant change in fluoride concentrations at Outfall 005.
If the result of long-term pumping is a reduction of fluoride concentrations at Outfall 005 to below 1.8
mg/L, then a potential pathway to compliance through the abandonment of the sewer has been
identified. If the long-term pumping test results in a decrease in fluoride concentrations at Outfall 005,
but not below the 1.8 mg/L discharge criteria, the data collected during the long-term pumping test will
be used in combination with data collected during Task 3 to determine if treatment and discharge to
Outfall 005 can achieve compliance. If there is no change in the fluoride concentrations at Outfall 005,
efforts will be made to identify additional locations to intercept the groundwater in the PWR. If those
efforts determine there are promising extraction point locations, extraction points will be relocated and
will undergo the same process. If no promising extraction point locations are determined, potential
fluoride sources outside of the PWR will be investigated.
4.2.4 Task 2d — Facility Topographic Survey and Storm Sewer Study
As documented earlier, one potential solution is re -engineering the storm sewers to prevent the ingress
of groundwater into the system. This work could involve the abandonment of sections of the drain and
development of an alternative drainage system. Two key tasks are proposed to support this work:
1. Perform further inspections of the storm sewers and manholes at the Facility. Excavations
conducted as part of the proposed installation of extraction points will enable a detailed
inspection of the existing storm sewers and confirmation of construction to be performed.
2. Complete a detailed topographic survey and confirm the storm sewer inverts. The purpose of
this work is to facilitate an engineering review of the storm sewers and provide critical data to
support development of an alternative drainage system.
4.3 Task 3 — Geochemical Testing of Water and Bench -Scale Studies
The HCSM (Appendix A), as currently developed, has limited data on the nature and extent of
groundwater impacts (within the recently installed groundwater monitoring network) and the
geochemistry of the groundwater (which directly impacts treatability). As detailed in the HCSM, a
comprehensive Facility -wide groundwater monitoring event is proposed for the Site in the first quarter
of 2023. This groundwater sampling event will use a combination of historical wells and recently
installed PWR wells.
In combination with the groundwater sampling event, surface water (Badin Lake), stormwater (from
within the storm sewer), and pumped groundwater (from the long-term pump tests) samples will also
be collected for chemical analysis. This data will be used in combination within the groundwater
sampling data to inform the HCSM and, based on the unique geochemical properties of each water
EHS Support LLC 23

Focused Treatability Study Work Plan — Badin Business Park
Scope of Focused Treatability Study
source, determine the following (which aids in validating the CSM and confirms that PWR groundwater
is the source of fluoride in the storm sewers):
1. Relative percentage of Badin Lake water in groundwater proximal to the lake
2. Relative percentage of PWR water in the storm sewer
3. Relative percentage of water contributed from the lake, PWR, and shallow groundwater system
in water extracted from the extraction points during the long-term pump tests
The ability to calculate these relative percentages is contingent upon there being unique base cation and
anion differences between these water sources. In addition to validating the HCSM, the geochemistry
data is also critical to understanding the corrosiveness and scaling/fouling potential of the groundwater
that may require treatment. As highlighted in the screening of treatment technologies, several water
treatment technologies are highly susceptible to fouling, and pretreatment may be required to ensure
optimal treatment performance. In addition, the presence of other cations and anions can have an
impact on treatment performance by competition for sorption sites or the presence of pH and alkalinity
conditions not being conducive to optimal performance. It is expected that Badin Business Park will
collaborate with water treatment vendors in execution of Task 3. Numerous water treatment vendors
have developed "models" designed to predict the performance of various water treatment systems
including, for example, reactive media, ion exchange, and reverse osmosis. Based on previous
treatability studies conducted for similar sites, a standard analytical suite has been defined (Appendix
B), but additional testing may be required.
The analytical suite selected for testing is designed to evaluate treatment efficiency but also to assess
fouling (biological and chemical) potential. Treatment systems need to be designed for standard
operating conditions that come with continuous pumping. The groundwater geochemistry following
prolonged pumping can be notably different than the geochemistry in samples collected at the onset of
pumping. For this reason, the groundwater produced from the short- and long-term pumping tests (Task
2), will be periodically sampled and tested for the analytical suite.
The standard process of assessment involves the following:
1. Task 3a — Collect water samples throughout the pumping tests and analyze them for the
analytical suite.
2. Task 3b — Provide data to vendors to model treatability. This step is important as vendors
determine the anticipated performance and critically note any pretreatment requirements that
need to be considered in bench -scale testing and system design.
3. Task 3c — Review the information provided by the vendor, including modeled data, and
determine if retained alternatives need to be adjusted.
4. Task 3d — Develop a bench -scale testing program cognizant of constraints, limitations, and
pretreatment requirements identified by the vendor.
S. Task 3e — Implement bench -scale testing and analyze the data.
Note that many of the vendors have rapid column test methods that are used to assess the performance
of resin under field conditions; however, where fouling is a concern, longer -term column tests may be
required to determine the fouling potential and performance.
For reverse osmosis, models are typically used to determine the osmotic pressures for treatment, the
number of treatment stages, and the predicted performance. As part of the selection process (based on
osmotic pressures), membranes are selected and sized, then fouling potential and pretreatment can be
determined. Key outputs from the vendor modeling for reverse osmosis will comprise:
EHS Support LLC 24

Focused Treatability Study Work Plan — Badin Business Park
Scope of Focused Treatability Study
1. Stages of reverse osmosis required (one, two, or three stages).
2. Percentage of permeate vs. reject brine (note that reject brine will have to be transported off -
site for disposal).
3. Predicted permeate and reject water quality.
4. Pretreatment specifications (pH and filtration).
5. Operation pressures and energy usage.
6. Membrane sizing and fouling potential (and associated up time); fouling potential is also
evaluated using bench -scale trials.
4.4 Task 4 — Field -Based Pilot Testing
As previously communicated in the October 2019 meeting with NCDEQ, the treatment of stormwater to
below 2 mg/L was shown as not practical. However, the previous assessment focused on an end -of -pipe
treatment solution where discharge concentrations are already near the practical treatment
concentration. Whereas this assessment will focus on groundwater extraction and treatment before
ingress into the storm sewer, targeting higher fluoride concentrations and smaller volumes will provide
a more optimal solution. Treatment of higher concentrated groundwater before ingress into the sewer
(for example from 8 to 10 mg/L to 2 mg/L) may be sufficient (in combination with the past mitigation
efforts) to achieve concentrations consistently below 1.8 mg/L at Outfall 005. The key challenge is
verifying the areas of mass flux into the sewer and effectively capturing and treating this water.
Alcoa has a long history of using reactive media for the treatment of fluoride and, in the context of
treatment alternatives, activated alumina, bone char, and calcium oxide have been found to be reliable
and cost-effective treatment alternatives for both ex situ and in situ treatment. In this context consider
that activated alumina is considered a presumptive treatment remedy and field testing can be
conducted in parallel with the bench -scale testing for other technologies.
In the United States and Europe, Alcoa has used activated alumina for the treatment of process water
and stormwater at active aluminum smelting sites. Numerous different configurations of treatment have
been conducted and the exact configuration of treatment for this Site has not been determined. While
activated alumina has limitations on treatment of high pH landfill leachate (pH greater than 8), under
more neutral to weakly acidic conditions (like the majority of groundwater at this Site with a pH
between 5.5 and 6.5) the reaction kinetics are highly favorable and in the range of 8 to 20 milligrams per
gram (mg/g) sorption capacity. Other treatment technologies have been applied including the use of
alkaline precipitation with lime and calcium chloride and the use of bone char; however, the kinetics of
adsorption with activated alumina have proven to be better.
It is expected that, under equilibrium pumping conditions, the fluoride concentration will decline, and
the pH will drop to background pH conditions, which are optimal for activated alumina. Based on
rainwater, Badin Lake and groundwater (outside of the waste management units) have a pH near 5.5;
the natural condition of the water is considered suitable for treatment. However, if the pH of the water
is outside these limits, then a pH adjustment may be required before application onto the reactive
media.
A primary issue with the treatment of groundwater is the potential that colloidal materials will result in
fouling of media over time. To avoid fouling pretreatment, alternative surface application, or in situ
treatment methods can be employed. It is proposed that initial trials will include the spray application of
EHS Support LLC 25

Focused Treatability Study Work Plan — Badin Business Park
Scope of Focused Treatability Study
groundwater onto a surface bed of activated alumina (or simply a surficial flow -through system), as
opposed to a contained media vessel. Both recommended approaches can include simple methods for
filtering (sand guard layers) and also provide the capacity for simple, manual removal of accumulated
silts and clays. Furthermore, these methods use very large surface areas, have long contact times, and
are less susceptible to fouling.
It is proposed that the combination of geochemistry data (as described earlier) and field -based pilot test
performance be used to evaluate the effectiveness of these presumptive treatment methods. The
reactive alumina treatment will likely be tested as part of the long-term pump testing described earlier,
assuming logistical and planning considerations are resolved and treatment isotherms developed.
Ultimately, how the reactive media is employed will be determined by a range of other logistical factors
as well as the information obtained from the previous work tasks. Reactive media can be used in a range
of in situ and ex situ treatment methods that can be considered at this Facility and can be deployed in
various configurations, including:
1. Use of engineered wetlands with reactive media flow -through treatment cells
2. In situ -permeable reactive barriers
3. Funnel and gate systems
4. Vessel -based treatment units as part of a groundwater treatment system
5. Reactive media recirculation cells (extraction and reinjection centers)
6. Treatment cells where groundwater pumping is conducted to induce the flow of impacted
groundwater through the treatment media
For all of the treatment media (activated alumina, bone char, etc.), the reaction kinetics are similar;
therefore, the proposed application methodology can be used for the evaluation and design of a broad
range of options.
Task 3 and Task 4 comprise the Treatment Study as shown in Figure 1-1. If it is found that treatment is
effective and the discharge at Outfall 005 remains below the 1.8 mg/L limit, a potential compliance
pathway has been identified. If treatment is ineffective, efforts will be made to identify additional
locations to intercept the groundwater in the PWR. If those effort determine promising extraction point
locations, extraction points will be relocated and will undergo the same process. If no promising
extraction point locations are determined, potential fluoride sources outside of the PWR will be
investigated.
EHS Support LLC 26

Focused Treatability Study Work Plan — Badin Business Park
Schedule and Reporting
5 Schedule and Reporting
As described earlier, the program of works involves a very systematic evaluation of technologies with
desktop, bench -scale, and pilot testing. The ultimate goal of this program of work is the development of
a focused feasibility study with recommended alternatives to be reviewed by NCDEQ and collaboratively
selected for implementation. It should be noted in the development of this work program that the
proposed pilot testing has been designed to achieve compliance with the NPDES limits during base flow
conditions within the storm sewer. However, the viability of treatment and the need for additional
performance information will still need to be assessed to design a system that may address all flow and
mass flux requirements.
The proposed program of work is as follows:
• November 29 and 30, 2022 — Conduct Site walk and project planning.
• December 15, 2022 — Issue conceptual designs and place orders for materials and equipment for
installation of recovery extraction points (including associated piping).
• January 15, 2023 — Begin excavating and constructing extraction points and drainage systems.
• February 28, 2023 — Begin seven-day pump tests at each of the extraction point locations
sequentially to determine sustainable yield and determine the long-term pump test program.
• March 30, 2023 — Begin long-term pump tests. The initial configuration is proposed to be as
follows, but based on the short-term pump tests, multiple extraction points may be pumped at
the same time and pumping timeframes may be shortened or lengthened. The following is the
timing for the proposed test program:
o Northwestern Location (Location 1) — March 30 to May 30, 2023 (focused in the area with
potential highest observed concentrations)
o Northwestern Seep Location (Location 2) — May 30 to July 30, 2023
o Eastern Location (Location 3) —July 30 to September 30, 2023
• Begin construction and implement pilot test — June 15, 2023.
• Comprehensive groundwater monitoring event data is available by July 30, 2023.
• Perform geochemical and bench -scale testing (potentially only using data from Locations 1 and
3):
o Location 1—June 15 to July 15, 2023
o Location 3 — August 15 to September 15, 2023
• Issue Focused Feasibility Study Report — November 1, 2023.
As part of this program of works, it is proposed to provide NCDEQ with routine monthly updates. This
will comprise information on the following:
1. Construction program and installation of the extraction points and associated piping
infrastructure.
2. Performance of the short-term pump tests including yields from each extraction point,
responses observed in adjacent wells, and changes in flow within the storm drains.
3. Long-term pump tests and observed changes in flow and concentrations of fluoride at various
location within the storm sewers. Proposed changes to the long-term pump testing program
(based on field observations and laboratory data) will be discussed.
4. Sampling and analytical testing to support vendor assessment of treatability.
5. Routine updates on the status and findings of the bench -scale testing.
6. The final design of the pilot testing and the implementation schedule will be documented.
7. Preliminary data from field trials.
EHS Support LLC 27

Focused Treatability Study Work Plan — Badin Business Park
Schedule and Reporting
In conjunction with this scope of work, the NPDES monitoring and discharge monitoring reports will be
completed as required by the permit. To aid the assessment of data, all available NPDES data will also be
included in the monthly reports and the effects of the proposed actions on fluoride concentration at
Outfall 005 will be discussed.
These monthly reports are designed to keep stakeholders informed of progress and, in combination with
conference calls and meetings, the project work will be advanced. A formal Focused Feasibility Study
Report will be submitted to NCDEQ for review and comment at the completion of this work. As noted
earlier, this report will have recommendations for a final approach, which we anticipate NCDEQ will
need to review and approve. This report will be supported by technical memoranda for each of the
components of work described, with the key findings from this program of works summarized in the
main report.
EHS Support LLC 28

Focused Treatability Study Work Plan — Badin Business Park
Management and Staffing
6 Management and Staffing
The Project Director, Mr. Nigel Goulding of EHS Support, will lead the Focused Treatability Study effort
with support from the following:
• Cameron Dixon (Principal Remediation Engineer)
• John Angelone (Project Remediation Engineer)
• Brandon Dean (Project Chemical Engineer)
• Mike Worden (Principal Geologist and Field Coordinator)
To execute this work, local engineering and contracting companies will be used to complete
construction and operations and maintenance activities.
EHS Support LLC 29

Focused Treatability Study Work Plan — Badin Business Park
References
7 References
A.T. Kearney, Inc. 1990. EPA Contract No. 68-W9-004; Work Assignment No. R04-05-04; Alcoa Badin
Works, North Carolina; EPA I.D. No. NCD003162542; Interim RFA Report; Final Deliverable.
March 1.
Alcoa. 2022. Badin Business Park LLC NPDES No. NC0004308 Permit Renewal Application. April 25.
EHS Support. 2022. Hydrogeological Conceptual Site Model Update. December.
Final NPDES Permit NC0004308 Badin Business Park LLC Stanly County Class I Facility, North Carolina
Department of Environmental Quality, Division of Water Resources. July 2, 2019.
Law Environmental, Inc. 1993. Confirmatory Sampling Report. June 28.
MFG Inc. 2001. RCRA Facility Investigation Report Volume I of II. Alcoa Badin Works, Badin, North
Carolina. March.
USEPA. 2018. Superfund Task Force Recommendation #3: Broaden the Use of Adaptive Management.
July 3.
EHS Support LLC 30

Focused Treatability Study Work Plan — Badin Business Park
Tables
EHS Support LLC

Table 1
General Response Actions
Focused Treatability Study Work Plan
Badin Business Park - Badin, North Carolina
Alcoa Corporation
General Response Actions
Action Description
No Action
No action is taken. This option is included for comparative purposes.
Institutional Controls
Implement institutional controls. Controls may include land use restrictions or water use restrictions.
Containment
Isolate contamination from the surrounding environment and receptors. Typically consists of a physical barrier blocking potential
exposure pathways and preventing contaminant mobilization. Often used in conjunction with institutional controls. Can also consist
of removing pathways that contaminated material use to reach the surface, such as subsurface storm drains.
Removal
Physically remove contaminated media from the environment. Groundwater is often collected by pumping from wells or sumps.
Soil is typically excavated mechanically. Removal actions are often used in conjunction with treatment or disposal actions.
Treatment
Contaminated media is subjected to a process that will reduce the toxicity, mobility, or quantity of contaminants. Treatment can be
performed in situ or ex situ and results in the reduction or elimination of risk.
Disposal
Contaminated media and/or its treatment byproducts are removed then transported to an appropriate off -site location, reducing
the potential for exposure. Often used in conjunction with other actions.
EHS Support
1 of 1

Table 2
Remedial Technologies
Focused Treatability Study Work Plan
Badin Business Park - Badin, North Carolina
Alcoa Corporation
Technology Type
Description
Comments
Retained
No Action
No Action
No Action.
Ineffective. No Action in included for comparative purposes only.
Yes, for comparative purposes only.
Land Use Controls
Institutional Controls
Institutional controls are administrative or legal practices used to
prevent contaminant exposure. These practices can include
groundwater use restrictions, land use restrictions, soil/water
management plans, and signage.
Not applicable to the Site on its own, however institutional controls
are often a part of a successful remedial alternative.
No, as institutional controls will not
address exceedances in stormwater.
May be evaluated in future feasibility
studies in combination with other
technologies.
Containment
Storm Sewer Closure
Remove or abandon the existing storm sewer structures.
This technology will require that the subsurface storm sewer be fully
removed or abandoned to ensure no incidental discharges occur
due to preferential pathways provided by existing infrastructure.
Stormwater will be handled through construction of surface
stormwater swales and management structures.
Yes.
Removal
Combined stormwater and groundwater removal via pumping
from existing manhole structures
Impacted water would be removed through installation of pumps
installed in manholes throughout the stormwater system, possibly
combined with plugs and/or new manhole structures with larger sumps
for collection of water.
This option would require significant piping and new infrastructure
to collect water for treatment or disposal. It would also not be
possible to remove water generated from anything other than very
minor storm events. However, this may be an option for
intercepting base groundwater infiltration in areas where ponding is
observed in the stormwater pipes, removing mass from those areas.
No, as it is not practicable to remove
stormwater flows from network.
Remove Groundwater via Sumps
Impacted groundwater is captured by sumps installed along
preferential pathways and suspected points of ingress along the sewer.
Environmental pumps located in the sumps draw in groundwater and
extract the groundwater prior to storm sewer ingress, preventing or
reducing discharge of impacted water from Outfall 005.
An advantage for pumping the sumps to capture groundwater is it
creates a depression in the groundwater table, which then pulls
groundwater from potentially unidentified pathways.
Yes.
Treatment
Permeable Reactive Barrier
A permeable reactive barrier is an in situ remedial technology where a
reactive media (e.g., activated alumina, bone char, or calcium oxide)
are strategically placed in the subsurface to intercept impacted
groundwater and adsorb the fluoride as the groundwater passes
through the media.
An effective method for fluoride remediation provided that critical
flow paths can be identified and intersected. Requires accurate and
detailed information of subsurface flow patterns.
Yes
Spray lrrigation/Phytoremediation
Contaminated groundwater is pumped and sprayed onto excess land.
The water will evaporate, thereby sequestering fluoride into the
unused soil.
The potential exists for fluoride migration from the soils. Plant
species with resistance to fluoride are required, as many species of
plants will exhibit terminal failure as fluoride accumulates within the
biomass.
Yes
EHS Support
1 of 3

Table 2
Remedial Technologies
Focused Treatability Study Work Plan
Badin Business Park - Badin, North Carolina
Alcoa Corporation
Technology Type
Description
Comments
Retained
Treatment Works - Activated Alumina Adsorption
Extracted groundwater is pumped through media beds containing
activated alumina. The media beds can be in typical pressurized media
vessels or in a passive open media container. Dissolved fluoride in
water reacts with the activated alumina to chemically adsorb the
fluoride.
This treatment technology is effective for removing fluoride from
water. To prevent fouling of the sequestration media process,
water will need to be pretreated to address the pH, alkalinity,
suspended solids, and other potential water quality parameters.
Bench -scale testing will determine what treatment train options are
required. Activated alumina can be regenerated, but the process is
complex and it is typically more practical for media consumed
during the treatment process to be stored and sent off -site for
disposal.
Yes
Treatment Works - Bone Char Adsorption
Extracted groundwater is pumped through media beds containing bone
char. Bone char is a form of activated carbon generated from animal
bones. Typically, activated carbon is ineffective when targeting
fluoride, but bone char contains hydroxyapatite which will adsorb
fluoride. The media beds can be in typical pressurized media vessels or
in a passive open media container. Dissolved fluoride in water reacts
with the activated alumina to chemically adsorb the fluoride.
This treatment technology is effective for removing fluoride from
water. To prevent fouling of the sequestration media process,
water will need to be pretreated to address the pH, alkalinity,
suspended solids, and other potential water quality parameters.
Bench -scale testing will determine what treatment train options are
required. Bone char consumed during the treatment process will be
stored and sent off -site for disposal.
Yes
Treatment Works - Calcium Oxide Adsorption
Extracted groundwater is pumped through media beds containing
calcium oxide. The media beds can be in typical pressurized media
vessels or in a passive open media container. Dissolved fluoride in
water reacts with the calcium oxide to chemically adsorb the fluoride.
This treatment technology is effective for removing fluoride from
water. To prevent fouling of the sequestration media process,
water will need to be pretreated to address the pH, alkalinity,
suspended solids, and other potential water quality parameters.
Bench -scale testing will determine what treatment train options are
required.
Yes
Treatment Works - Ion Exchange
Extracted groundwater is passed through vessels containing specially
designed anion resins. Low concentrations of fluoride can be removed
through the use of a strong base anion resin. Effluent levels of less
than 1 part per million can be achieved.
This treatment technology is effective, particularly for polishing.
Resins are sensitive to fouling. Anionic resin is not selective for
fluoride and will interact with other anions. Maintenance of the
resins requires regeneration with sodium chloride solution.
Yes
Treatment Works - Reverse Osmosis
Reverse osmosis is the process of forcing a solvent, in this case water,
from a region of high solute concentration through a membrane to a
region of low solute concentration through the application of pressure
greater than the osmotic pressure of the balance.
The technology has been shown to be effective in removing fluoride
from water. This treatment option will produce brine, which will
have to be stored and disposed of.
Yes
Treatment Works - Electrokinetic Coagulation/Flocculation
ECF is an adaptation of traditional coagulation and flocculation
techniques. Metals, such as iron and aluminum, are added to the
process water and introduced to an electrical current in place of
chemical coagulants and flocculants. The process makes use of three
separate processes to remove fluoride. These processes include
electrochemistry, coagulation, and hydrodynamics. These metals are
used as sacrificial anodes, and as they corrode they produce metal
hydroxide flocculants that capture and precipitate out fluoride. The
major advantage with ECF is a reduction in sludge requiring
management.
A promising technology, but it has not been vetted at a production
scale. The advantage of reduced sludge production may be offset by
energy demands.
Yes
Treatment Works - Chemical Coagulation/Flocculation
Groundwater is fed to a continuous flow reactor. Concentrated
alkaline salt solution (magnesium, calcium aluminum) is added to
promote precipitation of fluoride containing salts. Precipitate is
captured by filtration or in settling basins.
Aqueous effluent must be neutralized to an acceptable pH before
release back to environment. Typically used in high concentration
industrial effluents, and often low levels of fluoride remain in
effluent after treatment.
Yes
EHS Support
2 of 3

Table 2
Remedial Technologies
Focused Treatability Study Work Plan
Badin Business Park - Badin, North Carolina
Alcoa Corporation
Technology Type
Description
Comments
Retained
Disposal
Discharge to On -Site Evaporation Pond
The impacted groundwater is collected from the sub -surface or storm
sewer system by pumping wells, installing groundwater collection
sumps, or diverting flow from the storm sewer. Water would be
pumped to an on -site pond for evaporation. Fluoride would remain in
solution or sequester in soil preventing migration.
Large design considerations will have to be made regarding methods
to prevent loss of containment from the pond during flood events.
Yes
Discharge to Sanitary Sewer System
Groundwater is discharged to the sanitary sewer system where it will
be conveyed to the POTW. The municipal wastewater treatment plant
will remove fluoride before discharging treated process water.
Will require that water discharged to the sanitary sewer system
meet influent requirements dictated by the POTW.
Yes
Discharge to Outfall 012
Diversion of flow from NPDES Outfall 005 to NPDES Outfall 012 that
contains a diffuser allowing for dispersion of contamination, thus
avoiding high local concentrations.
This technology does not reduce the toxicity, mobility, or volume of
contamination.
Yes
Notes:
ECF = Electrokinetic Coagulation/Flocculation
NPDES = National Pollutant Discharge Elimination System
POTW = publicly owned treatment works
EHS �J� Support
3 of 3

Table 3
Remedial Alternatives
Focused Treatability Study Work Plan
Badin Business Park - Badin, North Carolina
Alcoa Corporation
Treatment Alternative
Process Option Description
Effectiveness
Implementability
Relative Cost
Screening Comments
TA-1:
No Action
No action is taken.
Not Effective.
Easily implementable.
No Cost.
Action does not meat the Remedial Action Objective
of discharge concentrations <1.8 mg/L fluoride at
Outfall 005. Action is not applicable and is included
for comparative purposes only.
TA-2:
Containment
Remove or abandon the existing storm sewer structures, removing the discharge pathway and
containing fluoride -impacted groundwater within the subsurface.
Effectively removes the risk of discharge exceedances at Outfall
005 as Outfall 005 will no longer be operable.
Implementation may pose a challenge as the storm sewer is aged and the
condition may present difficulties during abandonment/removal. Water will
need to be managed during the abandonment/removal process. Stormwater
produced at the Site will need to be managed at the surface and a new
stormwater management system will need to be designed, installed, and
permitted.
Capital Costs: Medium
to High
O&M Costs: Low
This technology will require that the storm sewer be
fully removed or abandoned to ensure no incidental
discharges occur due to preferential pathways
provided by existing infrastructure.
TA-3:
In Situ Treatment
Funnel and gate systems use cutoff walls to modify in -ground flow (funnel) towards multiple or a single
reactive barrier (gate). This reactive barrier can be considered a small, packed bed reactor in which
fluoride adsorbs to the surface of the packing (activated alumina, bone char, calcium oxide) during flow
through the barrier. Treated flow can then be directed to the current sewer system for routing to NPDES
Outfall 005.
Effective in the short term. Long-term effectiveness is unknown
and is heavily dependent on sorption capacity of the reactive
barrier used. Fouling of barrier due to colloidal materials is a
concern and will need to be further investigated if implemented.
Efficacy will be dependent on a careful evaluation of the
subsurface to minimize the potential for alternative flow paths.
Detailed pre -design investigation likely required. Installation easily
implementable. Likely to have minimal environmental impact after installation.
Capital Costs: High
O&M Costs: Low
Treatment via reactive barriers is an attractive
option given its potential for low cost and low
impact. Allows for treatment at multiple places
throughout the Site at a relatively low cost.
TA-4:
Ex Situ Treatment
TA-4a:
Spray Irrigation/Phytoremediation
Contaminated groundwater is pumped and sprayed onto excess land. The water will evaporate, thereby
sequestering fluoride into the unused soil. Potential for phytoremediation by organisms present in local
environment.
Fluoride is sequestered in soil for the short term but long-term
effectiveness is unknown. Potential for fluoride to leach to
groundwater and migrate to local watershed during storm
events.
Phytoremediation of fluoride would require additional studies to
determine the effectiveness in local area. Likely not applicable
given phytoremediation is highly advantageous for organic
contaminants.
Implementability is simple, as it consists of preparation of a planted area and
irrigation system. Most implementability issues are associated with
groundwater extraction system.
Capital Cost: Medium
O&M Costs: Low
Difficult to limit transfer of fluoride to surrounding
groundwater at sequestration site but if site with
adequate protection from fluoride migration is
identified, it could be a viable solution.
TA-4b:
Activated Alumina Sequestration
The impacted groundwater is collected from the sub -surface or storm sewer system by pumping wells,
the installation of groundwater collection sumps, or diverting flow from the storm sewer. Impacted
groundwater is conveyed to an on -site Groundwater Treatment System. Treatment system will address
water quality parameters prior to introducing the treated water to sorbent media beds, which will
reduce the fluoride concentrations to below the Outfall 005 discharge limit. Treated water will be
discharged via Outfall 005. The operation will produce byproducts, consumed media, and solids, which
will require disposal.
Immediately effective and continues to be effective with proper
O&M of Groundwater Treatment System. Extensively
demonstrated ability for fluoride removal at targeted Site
concentrations, prior to sewer ingress and dilution. Easily
scalable with treatment volume. Colloidal material in
groundwater may cause faster deactivation of sorbent materials.
Will require extensive testing to design necessary pre-treatment requirements
to prevent fouling. Water treatment plant will require detailed design and
factory fabrication with construction time frames between 6 and 9 months.
Readily implementable. Sorbents are low cost and readily available. Does not
require specially designed parts.
Capital Costs: Medium.
O&M Costs: Medium.
A low-cost option for fluoride removal. Does not
produce hazardous waste and has been
demonstrated to be effective at targeted Site
concentrations. Will require additional studies to
determine the effects of colloidal substances.
TA-4c:
Bone Char Sequestration
The impacted groundwater is collected from the sub -surface or storm sewer system by pumping wells,
installing groundwater collection sumps, or diverting flow from the storm sewer. Impacted groundwater
is conveyed to an on -site Groundwater Treatment System. Treatment system will address water quality
parameters prior to introducing the treated water to bone char media beds, which will reduce the
fluoride concentrations to below the Outfall 005 discharge limit. Treated water will be discharged via
Outfall 005. The operation will produce byproducts (consumed media and solids) which will require
disposal.
Immediately effective and continues to be effective with proper
O&M of Groundwater Treatment System. Extensively
demonstrated ability for fluoride removal at targeted Site
concentrations, prior to sewer ingress and dilution. Easily
scalable with treatment volume. Colloidal material in
groundwater may cause faster deactivation of sorbent materials.
Will require extensive testing to design necessary pre-treatment requirements
to prevent fouling. Water treatment plant will require detailed design and
factory fabrication with construction time frames between 6 and 9 months.
Readily implementable. Sorbents are low cost and readily available. Does not
require specially designed parts.
Capital Costs: Medium.
O&M Costs: Medium.
A low-cost option for fluoride removal. Does not
produce hazardous waste and has been
demonstrated to be effective at targeted Site
concentrations. Will require additional studies to
determine the effects of colloidal substances.
TA-4d:
Calcium Oxide Sequestration
The impacted groundwater is collected from the sub -surface or storm sewer system by pumping wells,
installing groundwater collection sumps, or diverting flow from the storm sewer. Impacted groundwater
is conveyed to an on -site Groundwater Treatment System. Treatment system will address water quality
parameters prior to introducing the process water to calcium oxide media beds, which will reduce the
fluoride concentrations to below the Outfall 005 discharge limit. Process water will be discharged via
Outfall 005. The operation will produce byproducts, consumed media, and solids, which will require
disposal.
Immediately effective and continues to be effective with proper
O&M of Groundwater Treatment System. Extensively
demonstrated ability for fluoride removal at targeted Site
concentrations, prior to sewer ingress and dilution. Easily
scalable with treatment volume. Colloidal material in
groundwater may cause faster deactivation of sorbent materials.
Will require extensive testing to design necessary pre-treatment requirements
to prevent fouling. Water treatment plant will require detailed design and
factory fabrication with construction time frames between 6 and 9 months.
Readily implementable. Sorbents are low cost and readily available. Does not
require specially designed parts.
Capital Costs: Medium.
O&M Costs: Medium.
A low-cost option for fluoride removal. Does not
produce hazardous waste and has been
demonstrated to be effective at targeted Site
concentrations. Will require additional studies to
determine the effects of colloidal substances.
TA-4e:
Ion Exchange Resins
System configuration will be similar to the conventional adsorption media system (as described in TA-4a
through TA-4d) requiring pretreatment (solids removal) and pH control.
Fluoride ions are removed from aqueous phase via an exchange mechanism with a commercially
available exchange medium. Potential exchange mediums include specially designed resins containing
synthetic organic materials that exchange groups are attached to.
On -site or off -site regeneration of resin is conducted to remove fluoride and allow for reuse.
Regeneration of resin produces a concentrated brine waste stream that is transported off -site for
disposal. On -site regeneration would require the construction of additional treatment/management
systems.
Commonly used technology for removal of ionic species from
process water. Scalable with volume but requires specially
designed systems.
Ion exchange systems are available commercially and plant design is similar to
any flow through Groundwater Treatment System. On -site regeneration (given
the remote location and absence of industrial sewer for concentrated waste
stream) is not considered viable. Ion exchange is expensive and the need to use
exchange beds will further increase costs.
The high cost of resin relative to alumina makes reuse (regeneration) the only
economic option. However the concerns over fouling of resin (especially with
multiple uses) is considered a major constraint. Management of the
concentrate waste stream is also a major constraint/cost.
Capitals Costs: Medium
O&M Costs: High
Ion exchange presents a potentially efficacious
solution but is more costly than lower cost sorptive
media. Exact efficacy and operational costs will
require further investigation.
EHS �` Support
1 pf 2

Table 3
Remedial Alternatives
Focused Treatability Study Work Plan
Badin Business Park - Badin, North Carolina
Alcoa Corporation
Treatment Alternative
Process Option Description
Effectiveness
Implementability
Relative Cost
Screening Comments
TA-4:
Ex Situ Treatment
TA-4f:
Reverse Osmosis
System configuration will be similar to the conventional adsorption media system requiring
pretreatment (solids removal) and pH control.
Extracted process water is exposed to a high-pressure gradient over a specially designed membrane to
generate a permeate and brine stream. This results in selective transfer of species across the membrane
concentration ions within the brine stream. Treated water is released to the environment.
In the process of treating the water, large amounts of brine (20% to 10% of the initial flow) are produced
that require management. Typically this is disposed of in the sewer and/or transported off -site.
RO systems can easilybecome mechanicallyor biologically fouled. This requires major solids
Y g Y q 1
pretreatment (flocculants, polymers, sand filters), sometimes multi -stage filtration, pH adjustment and
scale inhibitors (to address hardness and scale issues), and the extensive use of biocides.
RO is extensively used for water treatment applications. Requires
specially designed membranes to be effective and a fouling
behavior study will be required to determine effectiveness over
time. Generally used for water containing fluoride concentrations
much higher than was found on -site.
A core challenge with fluoride is the low molecular weight of the
ion and its strong electro-negative charge. While removal
efficiencies are higher for chloride, sulfate and fluoride removal
efficiencies are typically around 50%. Where removal efficiencies
are low it is common for ROpermeate to bepassed through ion
g
exchange resin to facilitate further lowering of fluoride
concentrations.
Implementable but will require extensive safety and process design
considerations. Design and construction of complex plant would likely be more
than 12 months and extensive bench -scale testing (an additional 6 months) will
have to be conducted to appropriate design pretreatment requirements and aid
in membrane selection.
High pressure membranes (able to facilitate more efficient removal of low
molecular ions) can be selected but these are more easily fouled. Major
challenge will be in development of an effective means for brine management.
g Pwill
Capital Cost: High
O&M Costs: High.
Costs with off -site
transport and disposal
of brine and
supplemental
treatment of fluoride
^ ith ion exchange resin
make costs very
high.
Despite high cost and fouling potential, it is known
to be an effective method for fluoride removal.
TA-4g:
Electrokinetic Coagulation
Flocculation (ECF)
ECF is an adaptation of traditional coagulation and flocculation techniques. Metals, such as iron and
aluminum, are added to the process water and introduced to an electrical current in place of chemical
coagulants and flocculants. The process makes use of three separate processes to remove fluoride.
These processes include electrochemistry, coagulation, and hydrodynamics. These metals are used as
sacrificial anodes, and as they corrode they produce metal hydroxide flocculants that capture and
precipitate out fluoride. The major advantage of ECF is a reduction of sludge requiring management.
Shown to be a highly effective solution at laboratory scale. No
known implementation at remedial scale.
Hard to implement. Will require novel plant design and construction of pilot-
scale systems to the real -world effectiveness of removal. Extensive process
monitoring would be required.
Capital Costs: High
O&M Costs: High
Efficacy is unknown at remediation scale. Requires
further process development before implementation
is viable. High costs associated with research and
electricity demands.
TA-4h:
Chemical Coagulation Flocculation
Groundwater is fed to a continuous flow reactor. Concentrated alkaline salt solution (magnesium,
calcium, aluminum)is added topromote precipitation of fluoride containingsalts. Precipitate is captured
P p p P
via filtration. Process can also take place in settling basins. Aqueous effluent must be neutralized to an
acceptable pH before release back to environment.
Demonstrated to be highly effective at removal of high fluoride
concentration in the semi -conductor industry.Efficacyof
treatment to required criteria is limited. Further downstream
treatment likely required.
Hard to implement. Requires construction of chemical treatmentplant with
P q
appropriate storage of waste products.
Capital Costs: High
O&M Costs: High
Hard to implement. Would require construction and
P q
maintenance of a chemical plant.
TA-5:
Removal/Disposal
TA-5a:
Evaporation Pond
The impacted groundwater is collected from the sub -surface or storm sewer system by pumping wells,
installing groundwater collection sumps, or diverting flow from the storm sewer. Water would be
pumped to an on -site pond for evaporation. Fluoride would remain in solution or sequester in soil.
Efficacy is dependent on the ability to successfully intercept the
impacted groundwater either prior to or in the existing
stormwater system. Fluoride will become concentrated in on -site
evaporation pond, effectively isolating it. This would require
limiting contact with the local watershed including during
flooding events.
The efficacy is also dependent on seasonal influences and storm
events. Winter months will reduce or stall evaporation. Storm
events will recharge the pond and delay sequestration.
The construction of an evaporation pond would not be difficult. However, an
investigation into the required volume for the pond may prove that the
available space limits the implementability of this option.
Capital Cost: Medium
O&M Costs: Low
Will cause further concentration of fluoride, that if
not adequately protected or exposed to a storm
event, could migrate to the watershed causing
further damage.
TA-Sb:
Sanitary Sewer
The impacted groundwater is collected from the sub -surface or storm sewer system by groundwater
collection sumps, or diverting flow from the storm sewer. Extracted groundwater is discharged to the
sanitarysewer system where it will be conveyed to the municipal wastewater treatmentplant. The
Y Y P
municipal wastewater treatment plant will remove fluoride before discharging treated process water.
Will require extensive reconstruction of on -site water infrastructure. Necessary to ensure that current
water processing infrastructure can handle proposed fluxes of fluoride.
Efficacy is dependent on the ability to successfully intercept the
impactedgroundwater eitherprior to or in the existingand
P
stormwater system. Prevents migration of fluoride to
environment.
Implementation of this technology will require municipal approval, permitting,
regular testing to ensure compliance with the POTW's discharge limits.
g g P
Some pretreatment may be required for other water quality parameters, even if
fluoride is within acceptable discharge limits.
Capital Cost: High
O&M Costs: Medium
Treatment is effective but requires high cost,
municipal approval, and further feasibility
evaluation.
TA-6:
Discharge to 0012
Diversion of flow from NPDES Outfall 005 to NPDES Outfall 012 that contains a diffuser allowing for
dispersion of contamination, thus avoiding high local concentrations.
Efficacy is dependent on the ability to successfully intercept the
impacted groundwater either prior to or in the existing
stormwater system. Use of a diffuser will allow for Outfall 012 to
receive the additional flow from Outfall 005 and still maintain
average concentrations below the discharge limit for Outfall 012.
The volumetric flow rate at Outfall 012 is limited to 42 gallons per
minute, potentially limiting the quality of water that may be
diverted to Outfall 012.
Implementability is simple in regards to construction of this option, however,
due to the diversion of fluoride to Badin Lake and the associated optics, this
alternative will be difficult to implement.
Capital Cost: Medium
O&M Costs: Low
While feasible and fully compliant, it is recognized
that there are potential optic issues with the pursuit
of this technology.
Notes:
ECF = Electrokinetic Coagulation/Flocculation
mg/L = milligrams per liter
NPDES = National Pollutant Discharge Elimination System
O&M = operation and maintenance
POTW = publicly owned treatment works
RO = reverse osmosis
TA = treatment alternative
EHS Support
2 pf 2

Table 4
Remedial Alternative Data Gaps
Focused Treatability Study Work Plan
Badin Business Park - Badin, North Carolina
Alcoa Corporation
Treatment Alternative
Part of FTSWP
Data Needed to Evaluate Alternatives
TA-1:
No Action
N/A
• None
TA-2:
Containment
✓
• In depth groundwater hydrology study.
• Topographic survey and model of stormwater collection and conveyance options.
TA-3:
In Situ Treatment
✓
• Estimates of groundwater mass flux to determine flouride mass estimates to be treated over time.
• Understanding of on -site asorption rates for determining required media volumes
• In depth hydrology study to locate prefferential pathways and ensure they are intercepted by the PRB.
✓
TA-4:
Ex Situ Treatment
TA-4a:
Spray
lrrigation/Phytoremediation
✓
• Estimates of groundwater mass flux to determine the sizing of spray irrigation area.
• Pilot testing of activated alumina treatment to determine Site -specific reaction kinetics.
• Bench -scale testing/data on flouride resistant flora species.
• Sump pilot testing to determine if flouride-impacted groundwater can be captured prior to sewer ingress.
✓
✓
TA-4b:
Activated Alumina
Sequestration
✓
• Estimates of groundwater mass flux to determine the sizing of media beds/vessels.
• Analyisis of water qaulity parameters to determine the need for pretreatment.
• Pilot testing of activated alumina treatment to determine Site -specific reaction kinetics and media consumption rates.
• Sump pilot testing to determine if flouride-impacted groundwater can be captured prior to sewer ingress.
• Evaluation of disposal options for consumed media.
✓
✓
✓
✓
TA-4c:
Bone Char Sequestration
✓
• Estimates of groundwater mass flux to determine the sizing of media beds/vessels.
• Analyisis of water qaulity parameters to determine the need for pretreatment.
• Potential bench -scale testing of bone char treatment to determine Site -specific reaction kinetics and media consumption rates.
• Sump pilot testing to determine if flouride-impacted groundwater can be captured prior to sewer ingress.
• Evaluation of disposal options for consumed media.
✓
✓
✓
TA-4d:
Calcium Oxide Sequestration
✓
• Estimates of groundwater mass flux to determine the sizing of media beds/vessels.
• Analyisis of water qaulity parameters to determine the need for pretreatment.
• Potential bench -scale testing of calcium oxide treatment to determine Site -specific reaction kinetics and media consumption rates.
• Sump pilot testing to determine if fluoride -impacted groundwater can be captured prior to sewer ingress.
• Evaluation of disposal options for consumed media.
✓
✓
✓
TA-4e:
Ion Exchange Resins
✓
• Estimates of groundwater mass flux to determine the sizing of media vessels.
• Analyisis of water qaulity parameters to determine the need for pretreatment and perform treatment modelling.
• Determine chemical demands for regeneration of resins.
• Sump pilot testing to determine if flouride-impacted groundwater can be captured prior to sewer ingress.
• Evaluation of disposal options for consumed media.
✓
✓
✓
TA-4f:
Reverse Osmosis
✓
• Estimates of groundwater mass flux to determine the sizing of the treatment train.
• Analyisis of water quality parameters to determine the need for pretreatment and to perform treatment modelling.
• Sump pilot testing to determine if flouride0impacted groundwater can be captured prior to sewer ingress.
• Evaluation of disposal options for brine.
✓
✓
✓
TA 4g.
Electrokinetic Coagulation
Flocculation (ECF)
✓
• Estimates of groundwater mass flux to determine the sizing of the treatment train.
• Analyisis of water qaulity parameters to determine the need for pretreatment.
• Potential bench scale testing of ECF treatment to determine Site -specific reaction kinetics and estimated sludge production rates.
• Evaluation of electricity demands of a full-scale ECF system.
• Sump pilot testing to determine if flouride-impacted groundwater can be captured prior to sewer ingress.
• Evaluation of disposal options for sludge.
✓
✓
✓
TA-4h:
Chemical Coagulation
Flocculation
✓
• Estimates of groundwater mass flux to determine the sizing of the treatment train.
• Analyisis of water qaulity parameters to determine the need for pretreatment.
• Potential bench -scale testing of coagulation/flocculation treatment to determine Site -specific reaction kinetics and estimated sludge production rates.
• Sump pilot testing to determine if flouride-impacted groundwater can be captured prior to sewer ingress.
• Evaluation of disposal options for sludge.
✓
✓
V
EHS Support'
1 of 2

Table 4
Remedial Alternative Data Gaps
Focused Treatability Study Work Plan
Badin Business Park - Badin, North Carolina
Alcoa Corporation
Treatment Alternative
Part of FTSWP
Data Needed to Evaluate Alternatives
TA-5:
Removal/Disposal
TA-5a:
Evaporation Pond
✓
• Estimates of groundwater mass flux to determine what size evaporation pond would be required.
• Evaluaton of flood conditions and patterns to use in the design of an evaporation pond that will prevent the release of stored flouride.
• Evaluation of permitting required to construct and operate the evaporation pond.
TA-5b:
Sanitary Sewer
✓
• Estimates of groundwater mass flux to determine what flow contributions will be made to the sanitary sewer.
• Analyisis of water qaulity parameters to determine the need for pretreatment, based on POTW discharge limits.
• Identify nearest potenial sanitary sewer discharge point.
✓
TA-6:
Discharge
Evaluation of pumping effects at Outfall 005.
Notes:
Bench scale testing will be performed in coordination with material vendors.
ECF = electrokinetic coagulation flocculation
FTSWP = Focused Treatability Study Work Plan
N/A = not applicable
POTW = publicly owned treatment works
PRB = permeable reactive barrier
TA = treatment alternative
EHS Support
2 of 2

Focused Treatability Study Work Plan — Badin Business Park
Appendix A Hydrogeological Conceptual Site Model Update
EHS Support LLC

Hydrogeological
Conceptual Site Model
Update
Badin Business Park
Badin, North Carolina
Prepared for:
Alcoa Corporation
Prepared by:
EHS Support
December 2022

Hydrogeological Conceptual Site Model Update — Badin Business Park
Table of Contents
Table of Contents
1 Introduction 1
1.1 Key Findings 1
2 Background 4
2.1 Operational History 5
2.2 Sources of Contamination and Constituents of Interest 5
2.3 Regulatory Background — National Pollutant Discharge Elimination System 5
2.4 Regulatory Background — Resource Conservation and Recovery Act 6
2.5 Previous Investigations and Remedial Activities 8
2.5.1 Former Main Plant Area 8
2.5.2 Alcoa Badin Landfill — SWMU 2 9
2.5.3 Old Brick Landfill — SWMU 3 10
3 Investigation Activities in 2022 12
4 Regional Setting 17
4.1 Regional Geology 17
4.2 Regional Hydrogeology 20
5 Site Geology 22
5.1 Areas of Engineered Cut and Fill 23
5.2 Areas of Excavated Soils 25
5.3 Areas of Fill 28
6 Site Hydrogeology 29
6.1 Monitoring Well and Piezometer Network 29
6.2 Hydraulic Conductivity 30
6.3 Vertical Groundwater Gradients 35
6.4 Historical Groundwater Elevation Data 36
6.5 2022 Groundwater Elevation Data 39
6.6 Seepage Velocity 42
7 Geochemistry 44
7.1 Nature and Extent of Groundwater Fluoride and Cyanide Impacts 44
7.2 Surface Water 51
7.2.1 Badin Lake 51
7.2.2 Little Mountain Creek 53
8 Stormwater System 54
8.1 Outfa 11005 55
8.2 Stormwater System — Groundwater Interaction 58
EHS Support LLC

Hydrogeological Conceptual Site Model Update — Badin Business Park
Table of Contents
8.3 Track Down Analytical Data 60
9 ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures 64
9.1 Efficacy of ABL Corrective Measures 66
9.2 Recovery Volumes 66
9.3 Electrical Conductivity Surveys 68
9.4 Source of COIs 70
10 Conclusions 72
11 References 74
EHS Support LLC ii

Hydrogeological Conceptual Site Model Update — Badin Business Park
Table of Contents
List of Tables
Table 3-1
Table 3-2
Table 6-1
Table 6-2
Soil Physical Properties Summary
Aquifer Testing Results
Hydraulic Conductivity Data Summary
Seepage Velocity Calculation Parameters
List of Figures
Figure 1-1
Figure 1-2
Figure 2-1
Figure 2-2
Figure 3-1
Figure 4-1
Figure 4-2
Figure 4-3
Figure 4-4
Figure 4-5
Figure 5-1
Figure 5-2
Figure 5-3
Figure 5-4
Figure 5-5
Figure 5-6
Figure 6-1
Figure 6-2
Figure 6-3
Figure 6-4
Figure 6-5
Figure 6-6
Figure 6-7
Figure 7-1
Figure 7-2
Figure 7-3
Figure 7-4
Figure 7-5
Figure 8-1
Figure 8-2
Figure 8-3
Figure 8-4
Figure 8-5
Generalized Appalachian Piedmont Hydrogeological Conceptualization
Elements of the Site Hydrogeological Conceptualization
Site Layout
Key NPDES Outfall Locations
2022 Investigation Locations
Regional Geographical and Geological Overview
Regional Geology and Geologic Structure Orientations
Generalized Weathering Profile and Nomenclature of Foliated Metasedimentary Rocks
from the Piedmont Physiographic Province
Examples of Native Soils Encountered at the Facility
Typical Rock Weathering Profile
Conceptual Effect of Facility Development on the Groundwater Flow System
December 2021 Photo of PWR Outcropping Along the Shore of Badin Lake Adjacent to
the Former Main Plant
Areas of Engineered Cut and Fill
Cross -Section from Badin Lake to Little Mountain Creek Crossing the Former Main Plant
and ABL
Depth to PWR or Fractured Rock
PWR and Rock Bedding Strike and Dip Measured in 2022
Groundwater Seepage in Test Pit Walls Completed in PWR
2010-2012 Transducer Study Results from the ABL
Locations of 2011-2012 Transducer Study Wells
2011-2012 Transducer Study — Soil and Fill Wells
2011-2012 Transducer Study — PWR wells
PWR Groundwater Elevations — September 8, 2022
PWR Groundwater Elevations — October 19, 2022
Fluoride Concentration Contours in Groundwater (2011)
Available Cyanide Concentration Contours in Groundwater (2011)
pH Contours for Groundwater (2011)
pH Dependence of Fluoride Mineral Solubility
2011 and 2012 Badin Lake Surface Water Samples
Stormwater System
Fluoride Concentrations Measured at Outfall 005 and MH 2.050 During December 2019
Sampling Event
Fluoride Compliance at Outfall 005
Fluoride Compliance 2018 Through January 2022 at Outfall 005
PWR Elevation Compared to Storm and Sanitary Pipe Invert Elevations
EHS Support LLC iii

Hydrogeological Conceptual Site Model Update — Badin Business Park
Table of Contents
Figure 8-6
Figure 8-7
Figure 8-8
Figure 9-1
Figure 9-2
Figure 9-3
Figure 9-4
Figure 9-5
Figure 9-6
2019 Fluoride and Cyanide Track Down Study Results
2021 Fluoride and Cyanide Track Down Study Results
Conceptual Summary of Impacts Entering the Outfall 005 Stormwater Conveyance
System
ABL Cross -Section
ABL Slurry Wall and Collection Trench Configuration
ABL Collection Trench Recovery Volumes Compared to Daily Precipitation Totals
ABL Collection Trench Recovery Volumes Compared to a 30-Day Running Average of
Precipitation Totals
Initial (Fall 2018) Electromagnetic Conductivity Survey Results
Fall 2022 Electromagnetic Conductivity Survey Results
List of Attachments
Attachment A 2022 Investigation Boring Logs
Attachment B 2022 Monitoring Well Survey and Construction Details
Attachment C 2022 Soil Physical Properties Data
Attachment D 2022 Aquifer Testing Calculations
Attachment E 2022 Groundwater Elevation Measurements
Attachment F 2022 Field Parameter and Analytical Data
Attachment G 2019 to 2021 Fluoride and Cyanide Track Down Analytical Results
EHS Support LLC iv

Hydrogeological Conceptual Site Model Update — Badin Business Park
Acronyms
Acronyms
ABL Alcoa Badin Landfill
AOC area of concern
API American Petroleum Institute
CEC Civil Environmental Consultants
cm/sec centimeters per second
CMS Corrective Measures Study
COI constituent of interest
CSM Conceptual Site Model
EM electromagnetic
GWB Geochemists' Workbench
HCSM Hydrogeological Conceptual Site Model
HDPE high -density polyethylene
HWR hard weathered rock
mg/L milligrams per liter
MH manhole
mL/min milliliters per minute
mS/m milliSiemens per meter
NAVD88 North American Vertical Datum 1988
NCAC North Carolina Administrative Code
NCDEQ North Carolina Department of Environmental Quality
NCDENR North Carolina Department of Environment and Natural Resources
NCGS North Carolina Geological Survey
NPDES National Pollutant Discharge Elimination System
OBL Old Brick Landfill
ORP oxidation-reduction potential
PAH polycyclic aromatic hydrocarbons
PCB polychlorinated biphenyl
POTW publicly owned treatment works
PVC polyvinyl chloride
PWR partially weathered rock
RCRA Resource Conservation and Recovery Act
RFA RCRA Facility Assessment
RFI RCRA Facility Investigation
SPL spent potliner
SWMU solid waste management unit
SWR soft weathered rock
TCE trichloroethene
EHS Support LLC v

Hydrogeological Conceptual Site Model Update — Badin Business Park
Acronyms
USEPA
USGS
United States Environmental Protection Agency
United States Geological Survey
Trademarks, trade names, company, or product names referenced herein are used for identification
purposes only and are the property of their respective owners.
EHS Support LLC vi

Hydrogeological Conceptual Site Model Update — Badin Business Park
Executive Summary
Executive Summary
The revised hydrogeological conceptual model for the Badin Business Park presented in this document is
based on a synthesis of historical information and studies along with data from field studies performed
as recently as 2022. The primary finding is that groundwater at the former Main Plant is recharged from
precipitation infiltrating into partially weathered rock on the hillside to the west, and from Badin Lake to
the east. Groundwater travels through the partially weathered rock unit to ultimately discharge
primarily on the floodplain of Little Mountain Creek. Whereas other soil and fill units exist, they are
limited in extent and capacity to transmit groundwater over broad areas.
Plume geometry at the former Main Plant is constrained by the distribution of native soil, fill derived
from native soil, and fill derived from a mixture of native soils and anthropogenic debris that includes
industrial materials. The location and geometry of the plume has remained stable to decreasing over the
time between the most recent Site -wide investigations. Groundwater migration out of these fill areas is
limited by the hydraulic properties of the surrounding geologic units. Geochemical attenuation of
constituents of interest occurs through mixing with clean water from Badin Lake that is recharging the
partially weathered rock groundwater system, and through mineralization reactions that occur due to a
large pH gradient.
The aged stormwater conveyance network contains discontinuities such that groundwater enters the
portion of the Outfall 005 stormwater system in localized areas where pipes intersect the partially
weathered rock. This water ultimately discharges at Outfall 005 and results in periodic fluoride
exceedances above the National Pollutant Discharge Elimination System (NPDES) discharge limit criteria.
Remediation measures implemented at the toe of the Alcoa/Badin municipal landfill are demonstrated
to be effective at capturing impacted groundwater and preventing migration of constituents of interest
to Little Mountain Creek. Ongoing data collection from this area during 2023 will be used to update and
further validate this hydrogeological conceptual model in future submissions.
EHS Support LLC vii

Hydrogeological Conceptual Site Model Update — Badin Business Park
Introduction
1 Introduction
This revised Hydrogeological Conceptual Site Model (HCSM) Report (Report) has been prepared for
Badin Business Park LLC, a subsidiary of Alcoa Corporation (Alcoa). The Badin Business Park Facility
(Facility or Site), formerly known as the Badin Works Facility and associated properties, consists of the
former Main Plant, Alcoa Badin Landfill (ABL), and Old Brick Landfill (OBL). The Facility is located at 293
Highway 740 in Badin, Stanly County, North Carolina. This report has been developed out of a need to
update the understanding of conditions at the Facility and to guide remedial actions. It is based on a
synthesis of historical information and studies along with data from field studies performed as recently
as 2022. This report provides an updated assessment of the hydrogeology, the interaction between
groundwater and surface water, and contaminant attenuation across the former Main Plant and ABL.
The results and conclusions of this report include a summary of additional works completed during 2022
to address identified data gaps in order to meet the stated objective. The 2022 data are supplemented
with historical stormwater sampling results; historical Facility reports and data; United States Geologic
Survey (USGS) and North Carolina Geological Survey (NCGS) maps, publications, and geospatial data
products; peer -reviewed research; re-evaluation of Site -related well lithology, water level monitoring,
and laboratory analytical data; and geospatial data products produced from these data sources.
Furthermore, as part of this scope of work for the supplemental investigations, reinterpretation of
historical investigation data through a review of published literature was used to update the HCSM and
align it with recognized key concepts of the hydrogeology and flow systems pertinent to Piedmont
geology, including the Heath Le Grande Model (LeGrand, 1967, 2004). This required a greater emphasis
(consistent with the LeGrand model) on the physical properties and flow within the partially weathered
rock (PWR), which is recognized as the primary geologic unit controlling groundwater flow and flux in
this type of geologic setting.
The remainder of this Report is structured as follows:
• Introduction and Key Findings (Section 1)
• Background (Section 2)
• Investigation Activities (Section 3)
• Regional Setting (Section 4)
• Site Geology (Section 5)
• Site Hydrogeology (Section 6)
• Geochemistry (Section 7)
• Stormwater System (Section 8)
• ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures (Section 9)
• Conclusions (Section 10)
• References (Section 11)
1.1 Key Findings
This report provides an update to the understanding of the HCSM. Prior to Facility development,
groundwater flowed according to natural geologic controls typical of the North Carolina Piedmont
(Figure 1-1). A key difference between the Facility and natural flow systems is that excavation for
development removed native soils over a large portion of the former Main Plant, and Badin Lake was
EHS Support LLC 1

Hydrogeological Conceptual Site Model Update — Badin Business Park
Introduction
established as an artificial reservoir that provides a source of recharge to groundwater at the Facility
(Figure 1-2).
Recharge
Groundwater
confined in partially
weathered rock
Groundwater
potential head
Precipitation
recharges
groundwater
Rock structures
and fabric can control
groundwater flow direction
Groundwater
discharges
to valleys
Figure 1-1 Generalized Appalachian Piedmont Hydrogeological Conceptualization
Recharge
Groundwater
confined in partially
weathered or
fractured rock
Dis
Badin Works Hydrogeology Conceptualization
Rock structures
and fabric direct
groundwater toward
ABL and Little Mountain Creek
Badin Lake
provides recharge
Figure 1-2 Elements of the Site Hydrogeological Conceptualization
EHS Support LLC 2

Hydrogeological Conceptual Site Model Update — Badin Business Park
Introduction
Additional key findings of the refined HCSM and supporting data collected in 2022 are summarized in
the following bullet points.
• Geologic units at the Facility are PWR including fractured rock, saprolite and residual soil, and
fill. Fill is either composed of native soils or is a mixture of native soil and anthropogenic debris
that includes industrial materials.
• Groundwater occurs in PWR (including fractured rock) and anthropogenic fill.
o Saprolite and residual soil have very low hydraulic conductivity; no monitoring wells are
exclusively screened in these units. Monitoring wells that include saprolite or residual soil in
the screen interval only produce water if the screen interval also intersects fill or PWR.
o Fill has highly variable hydraulic conductivity depending on the proportion of native soils. A
higher proportion of fill made up of native soils equates to lower hydraulic conductivity.
o PWR has moderate hydraulic conductivity and is locally very conductive due to fracturing.
Evidence for high local permeability is a significant loss of drilling fluid circulation during
drilling of MW-20A (Geraghty and Miller, 1995).
• PWR and fractured rock are the only units that are continuous across the former Main Plant and
ABL. Areas of fill are limited to isolated ravines or drainages that were filled during Facility
development and operations, consequently:
o A network of PWR wells is critical for understanding groundwater fate and transport.
o Wells screened in fill are only useful for understanding how isolated areas of fill interact
with the broader PWR groundwater system.
• Based on groundwater elevation data, groundwater in PWR at the former Main Plant is
recharged by Badin Lake to the east and a flow system originating on the hillside to the west.
The two flow systems converge near the shoreline of Badin Lake and flow southward toward the
ABL. Groundwater ultimately discharges primarily to the floodplain of Little Mountain Creek, as
evidenced by strong upward vertical groundwater gradients in this location.
• Mixing between Badin Lake water and groundwater leads to substantially lower constituent
concentrations due to mixing and geochemical attenuation across a steep pH gradient at the
mixing zone.
• Groundwater flow directions in PWR are influenced by the regional trend of geologic structures
and subsurface stormwater infrastructure, both of which trend northeast -southwest in the
direction from Badin Lake toward the floodplain of Little Mountain Creek.
• Limited sections of storm sewer piping intersect the PWR and groundwater contained in this
unit and the groundwater from this system has been shown to enter stormwater sewers.
Fluoride enters the storm sewer system where the pipe intersects PWR or fractured rock. This
water ultimately exits at Outfall 005. The introduction of clean water to the storm sewer could
bring the system into compliance.
• The storm sewer systems were established in natural materials and the use of bedding materials
was limited before pipe placement. The intermittent distribution of bedding materials (sand,
gravel, etc.) limits the potential for preferential flow of groundwater along these trench lines.
Groundwater gauging data does not show any distortions in groundwater equipotential (low
groundwater elevations proximal to drain infrastructure), which would be indicative of
preferential flow along bedding materials.
• A groundwater collection trench at the toe of the ABL has gone through several upgrades and is
effective at mitigating groundwater impacts to the floodplain of Little Mountain Creek. The
efficacy of the interceptor trench is monitored by annual geophysical surveys of subsurface
conductivity, which indicates a decreasing footprint of impacted groundwater.
EHS Support LLC 3

Hydrogeological Conceptual Site Model Update — Badin Business Park
Background
2 Background
Areas where past operations occurred include the 123-acre former Main Plant, and industrial materials
were disposed of in the 14-acre ABL located 500 feet southwest of the former Main Plant, and the 3-
acre OBL located 0.75 miles northeast of the former Main Plant (Figure 2-1).
The former Main Plant was built on an area of engineered cut and fill that was leveled to an elevation of
approximately 520 feet relative to the North American Vertical Datum 1988 (NAVD88) (Figure 2-1). The
elevation increases immediately east of the Facility to over 600 feet NAVD88. The former Main Plant is
bordered by Badin Lake to the east, which is a man-made flooded valley constructed in the early 1900s
for generating hydroelectric power. The average surface water elevation of Badin Lake is approximately
509 feet (NAVD88) based on data from the Cube HydroTM Carolinas websitel (corrected for obvious
outliers). The ground surface elevation decreases south of the former Facility and ABL to less than 470
feet NAVD88 on the floodplain of Little Mountain Creek.
Note: Yellow dashed lines indicate ground elevation in units of feet (North American Vertical Datum 1988 [NAVD88]).
Figure 2-1 Site Layout
1 Cube Hydro Carolinas — Cube Hydro Carolinas (cubecarolinas.com)
EHS Support LLC
4

Hydrogeological Conceptual Site Model Update — Badin Business Park
Background
2.1 Operational History
The Facility operated from 1916 through 2007 after Badin Lake was constructed in the early 1900s for
hydroelectric electricity generation. In the mid-1960s, potlines were redesigned and expanded at the
Facility. Production output was lowered in August 2002, and only anodes and high -purity aluminum
were manufactured until production ceased in 2007. The Facility was permanently closed in 2010.
Several buildings have been demolished since 2012, and the former Facility has been redeveloped into a
business park for manufacturing companies.
2.2 Sources of Contamination and Constituents of Interest
The Facility employed the Hall-Heroult industrial aluminum smelting process, which involved high -power
electrolytic extraction of aluminum from a cryolite solution containing sodium, alumina, and fluoride.
The process was conducted in brick -lined steel pots, with an inner lining of carbon -based cathode
manufactured on -Site from anthracite and coal tar pitch. Carbon -based anodes, also manufactured on -
site, were lowered into the cryolite solution and an electric current was applied. Spent potliner (SPL)
was periodically jackhammered out of the pots before reusing the steel pot casing. The first cut of the
SPL consists of the carbon cathode lining and is designated as code 'K088' by the United States
Environmental Protection Agency (USEPA). Fluoride and cyanide, the primary constituents of interest
(COIs) in soil and groundwater, are associated with past production and K088 disposal practices. The
second cut of the SPL includes the steel shell, insulating brick, and metallic aluminum and is excluded
from the K088 designation.
Regulatory Background — National Pollutant Discharge Elimination System
Surface water discharges from the Facility are regulated through the NPDES program. Eleven outfalls are
permitted to discharge to either Badin Lake or an unnamed tributary to Little Mountain Creek. The
location of the outfalls and associated storm sewer piping are shown on Figure 2-2. While all locations
are permitted for stormwater discharges associated with an industrial activity, Outfalls 005, 011, 012,
013, and 019 are also permitted for non -process wastewater associated with groundwater infiltration.
Priority pollutant sampling is conducted at outfalls under NPDES permit NC0004308, and is discussed in
the context of Outfall 005, where periodic exceedances of the fluoride discharge limit occur (Section 8).
To address the issues, Badin Business Park applied to the North Carolina Division of Water Resources for
a special order by consent on July 2, 2018. The special order by consent specified the need to design and
construct an upgraded stormwater piping system in an effort to meet discharge limits stipulated under
the NPDES permit. Construction of the shallow stormwater system and complimentary efforts to identify
and mitigate the cause of the Outfall 005 fluoride exceedances are discussed in Section 8.
EHS Support LLC 5

Hydrogeological Conceptual Site Model Update — Badin Business Park
Background
Note: Red, yellow, blue, green, and teal colors indicate sections (piping) of the storm sewer system directed to specific outfalls.
The black lines indicate the approximate boundaries of the former Main Plant and the Alcoa Badin Landfill.
Figure 2-2 Key NPDES Outfall Locations
2.4 Regulatory Background — Resource Conservation and Recovery Act
In March 1990, Alcoa filed a Resource Conservation and Recovery Act (RCRA) Part B permit application
with the USEPA for the on -site storage of hazardous wastes (specifically K088) for greater than 90 days.
The permit application triggered a RCRA Facility Assessment (RFA) that was performed by USEPA Region
IV (A.T. Kearny Inc, 1990), and identified 34 solid waste management units (SWMUs) and 2 areas of
concern (ADCs). Corrective actions to be conducted were outlined in Alcoa's RCRA Part B permit, which
EHS Support LLC
6

Hydrogeological Conceptual Site Model Update — Badin Business Park
Background
was issued by what is currently the North Carolina Department of Environmental Quality (NCDEQ) in
cooperation with USEPA Region IV in March 1992.
The first step in the corrective action process was confirmation sampling at 7 SWMUs to verify if a
release had occurred. Alcoa identified 12 additional SWMUs after completing the RFA and voluntarily
completed interim measures at several SWMUs. Based on the outcome of these activities, Alcoa
completed a RCRA Facility Investigation (RFI) report (MFG Inc, 2001). The RFI findings immediately
supported a No Further Action status by the North Carolina Department of Environment and Natural
Resources (NCDENR) for 22 of the Facility SWMUs and AOCs. A No Further Action status was granted to
5 additional SWMUs following confirmatory sampling, while 18 units were to be further investigated
under the RFI process. Interim measures and remedial actions conducted to date have led to a No
Further Action or No Further Investigation status assigned to all or a portion of 43 SWMUs.
The RFI identified groundwater in three areas of the Facility needing further actions — the ABL (SWMU
2), the OBL (SWMU 3), and groundwater in the northern portion of the former Main Plant (Figure 1-1)
(MFG Inc, 2001). Between 2009 and 2013, Alcoa completed a Corrective Measures Study (CMS) to
update the Geologic Conceptual Site Model (CSM) and the HCSM, as well as to establish the remedial
action objectives. The CMS was completed in five phases that are documented in four reports
(Environeering, 2010, 2012a, 2012b, 2013).
The CMS (Environeering, 2010, 2012a, 2012b, 2013) documented that cover system upgrades have
resulted in beneficial effects to groundwater concentrations at the OBL. The earlier RFI results
demonstrated that there are no COls in soils adjacent to the OBL and only cyanide exceeded
groundwater screening values, whereas fluoride was not detected above North Carolina groundwater
criteria (i.e., Title 15A of the North Carolina Administrative Code [NCAC] Subchapter 2L standards or NC
2L standards) in groundwater samples collected from any OBL wells during the CMS Phase 3 engineering
data collection work (Environeering, 2012b). Available cyanide was detected above NC 2L standards in a
sample from one OBL well during the CMS Phase 3 engineering data collection; in subsequent sampling
events it was not detected above the NC 2L standards.
The CMS (Environeering, 2010, 2012a, 2012b, 2013) documented that COls in former Main Plant soils
were addressed by interim measure work and soil removal activities. Available cyanide, fluoride, and
trichloroethane were detected above NC 2L standards in the former Main Plant groundwater. Arsenic
was eliminated from Facility COI list due to high natural background concentrations in the area, and the
only other groundwater COI identified during the earlier RFI work was below NC 2L standards during the
CMS work. As part of the January 23, 2017, correspondence concerning the review of Phases 4 and 5 of
the CMS (NCDEQ, 2017), NCDEQ requested additional groundwater sampling for trichloroethene (TCE)
from newly installed monitoring well MW-110. To address the objective, groundwater samples were
collected from four monitoring wells (MW-4, MW-9, MW-16, and MW-110) (Environeering, 2018a).
Sampling results for all four wells were above NC 2L groundwater standard of 0.003 milligrams per liter
(mg/L). However, concentrations of TCE in the three wells sampled during the CMS had decreased,
indicating that the constituent plume is not expanding. Also, TCE results for MW-110 were only slightly
above the NC 2L groundwater standard at a concentration of 0.0065 mg/L.
At the ABL, the RFI documented that no COls were present in soil above conservative risk -based
screening levels, and only total cyanide exceeded screening levels in groundwater from a single well
downgradient of the landfill. The CMS work (Environeering, 2010, 2012a, 2012b, 2013) documented the
EHS Support LLC 7

Hydrogeological Conceptual Site Model Update — Badin Business Park
Background
beneficial effects of ABL cover system upgrades; available cyanide and fluoride were below NC 2L
standards in all sentinel groundwater monitoring wells.
As part of the January 23, 2017 correspondence concerning the review of Phases 4 and 5 of the CMS
(NCDEQ, 2017), NCDEQ requested an additional investigation at the ABL. A work plan was prepared that
outlined four tasks to address the requested items. The work plan was submitted in revised form on
April 2, 2018 (Environeering, 2018b), following conditional approval of the approach on January 31,
2018. The several reports detailing the outcome of the investigative activities are summarized in a letter
provided to NCDEQ dated December 22, 2021.
The four tasks outlined in the 2018 work plan are as follows:
• Conduct a surface water assessment involving sample collection from Little Mountain Creek and
the eastern drainage ditch on the Little Mountain Creek floodplain to assess concentrations of
polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) in sediment, and
PCBs, PAHs, fluoride, and cyanide in surface water. These results are discussed in Section 7.2.
• Evaluate the hydrological conditions to determine contributions of groundwater to the eastern
drainage ditch and the efficacy of the groundwater collection trench system. The results of this
evaluation are discussed in Section 7.2.
• Establish a geophysical baseline to delineate the linear extent of elevated constituent levels in
the wetland downgradient of the ABL and monitor the effectiveness of the groundwater
collection system. The results are described in Section 9.3.
• Determine the jurisdictional status of three drainage ditches (eastern, middle, and western) to
classify conditions at the base of the ABL. Results are documented in a notification of
Jurisdictional Determination (U.S. Army Corps of Engineers, 2020).
As detailed in Section 2.5.2, groundwater seeps that developed following cover improvements at the
ABL were managed with a slurry wall and trench system that intercepts and captures groundwater and
conveys it to a public treatment system. Subsequent upgrades to the downgradient seep management
system following the CMS starting in 2016 continue to show improvements to groundwater quality on
the floodplain of Little Mountain Creek (Section 9).
2.5 Previous Investigations and Remedial Activities
As stated in Section 2.4, the RFI identified groundwater in three areas of the Facility that need further
action: the ABL (SWMU 2), the OBL (SWMU No. 3), and groundwater in the northern portion of the
former Main Plant (MFG, 2001). Investigations and remedial actions to address the RFI findings were
implemented and are summarized in Section 2.5.1 through Section 2.5.3. Detailed chronologies of
regulatory activities are available in previous submissions to the NCDENR Division of Waste
Management and are not repeated in this report (e.g., Environeering, 2010, 2012a, 2012b, 2013, 2015,
2018a, 2018c, 2019).
2.5.1 Former Main Plant
The 123-acre former Main Plant encompasses several of the SWMUs that were defined in the RFI (MFG
Inc, 2001). Alcoa has conducted interim measure works and soil removal activities for soil at several
EHS Support LLC 8

Hydrogeological Conceptual Site Model Update — Badin Business Park
Background
SWMUs and AOCs in the former Main Plant, which has resulted in No Further Action required to address
soil direct contact pathways.
Alcoa conducted a Facility -wide investigation to characterize fluoride and total cyanide in groundwater
in 2005 and 2006, which involved installing several new monitoring wells. Groundwater in the former
Main Plant was retained in the corrective action process as a result of the RFI and subsequent
groundwater investigations. Additional Facility -wide groundwater data were collected during the data
collection phase of the CMS in 2011 (Environeering, 2012a, 2012b). Based on the data collected during
groundwater investigations, fluoride and cyanide are identified as the primary COls in groundwater.
Areas with the highest groundwater fluoride and cyanide concentrations are near the On -Site Landfill
(SWMU 1) and the West Fill Area (SWMU 46; formerly known as the Coke Management Area). TCE is
also identified in the northern portion of the former Main Plant at MW-4, MW-9, MW-16, and MW-110.
Following a 2018 groundwater sampling event focused on these four wells, it was concluded that TCE is
decreasing in concentration and attenuating due to infiltration of lake water into the groundwater
system near MW-110 (Environeering, 2018a).
The On -Site Landfill is in the northeastern part of the former Main Plant. Prior to construction of the
former Main Plant, the ground surface slope decreased to the east toward Badin Lake. The landfill was
established in a natural ravine. The On -Site Landfill is a former SPL landfill with fluoride and cyanide as
the primary COls. The On -Site Landfill operated from the 1930s to the mid-1970s. Fill material mainly
consists of SPL and other carbonaceous material, metal debris, and silty sand (Geraghty & Miller, 1995).
Surface water control improvements were completed in 1996 (Alcoa, 1996), and a minimum of 2-foot
thick low permeability soil cover was placed over the unit (MFG, 2011).
The West Fill Area is situated at approximately 555 to 560 ft NAVD88 on a hillside west of the area
excavated for construction of the former Main Plant. It is located to the west of the former rail trestle
and coke storage area. There is a sharp elevation decrease eastward toward the former Main Plant and
Badin Lake and an increase in elevation westward toward the residential areas. A review of historical
topographic maps, historical photographs, aerial imagery, and recent Facility investigative activities
confirms that SWMU 46 is a fill area. This data supports that native fill soils and minor amounts of plant
process remnants were used to raise the area by approximately 10 to 20 feet to its existing grade
(Environeering, 2012a).
2.5.2 Alcoa Badin Landfill — SWMU 2
The ABL is located approximately 500 feet south of the fenced Former Main Plant and occupies
approximately 14 acres (Figure 2-1). The ABL decreases in elevation towards the southwest, south, and
southeast in the direction of Little Mountain Creek. Ajurisdictional wetland is located on the Little
Mountain Creek floodplain between the toe of the landfill and Little Mountain Creek.
The ABL was used by Alcoa and the community in Stanly County as a local "dump" for general municipal
refuse and industrial debris for approximately 70 years. The ABL was established in a natural ravine,
which extended from south of Wood Street towards Little Mountain Creek. Landfill operations ceased in
1979. Waste materials believed to be deposited in the landfill include solid refuse, construction debris,
process wastes, and municipal waste from the town and individuals. Excavated cut soils, excess spoils,
and weathered rock from grading in the early-1960s modernization of the Facility were also placed in
the ABL. The ABL was rough graded in 1980 using available on -site soils and was seeded with grass.
EHS Support LLC 9

Hydrogeological Conceptual Site Model Update — Badin Business Park
Background
In October 1997, the ABL surface was regraded to control run-off by regrading to a slope suitable for
mowing and installing a cover system consisting of 12 inches of silty clay soil, compacted to 95 percent,
overlain by a 6-inch vegetative layer consisting of silty clay soil combined with lime and fertilizer. Run-on
from high areas was managed by installing both lined and unlined ditches along the flanks of the ABL
that discharge to the flood plain of Little Mountain Creek. Channels were lined with a 4-inch-thick
concrete revetment mat or jut mat and grass. The channels were designed to accommodate 25-year
storm events (Alcoa, 1998). Three seeps were identified at the toe of the ABL following the completion
of these activities.
In June 2000, the construction of a low -flow seep collection system was completed for combining the
three seeps into a single discharge under the Facility's NPDES permit. In 2005, the discharge was
eliminated through the installation of a forced main to route the seep water to a utility sewer that leads
to Stanly County Utilities' publicly owned treatment works (POTW).
In 2016, the existing seep collection system was upgraded to improve overall seep capture and
collection efficiency. The previous system collected water from three small seeps in ground surface
collection basins. The basins were prone to flooding and surface water infiltration. This caused clean
surface water to be captured, pumped, and treated. The new system was intended to intercept water in
a below -grade collection trench immediately downgradient of the ABL. In addition, a slurry wall was
installed downgradient of the collection trench. The slurry wall was installed to offer two benefits: (1) a
barrier against ABL groundwater migrating towards the floodplain, and (2) to provide a barrier so clean
groundwater from the floodplain would not flow into the collection trench (Power Engineers Inc, 2017).
Following installation of the trench and barrier wall, seeps developed upgradient of the collection
trench. In 2017 and 2019, modifications were made to the trench system to collect seeps that developed
on the hillside upgradient of the 2016 collection system. The area is currently monitored annually using
geophysical surveys to confirm the efficacy of the remedial measure. The efficacy of the ABL collection
trench is discussed further in Section 9.
2.5.3 Old Brick Landfill — SWMU 3
The OBL is an approximately 3-acre, unlined landfill located approximately 0.75 miles northeast of the
former production Facility on a slope bordered by Badin Lake. Materials including used baking furnace
bricks were disposed of in the OBL from 1915 to 1960. Closure of the landfill consisted of covering the
area with 12 inches of compacted clay, stabilizing the cap with vegetative cover, and diverting
stormwater with drainage ditches (Aquaterra, 1991b).
The 2001 RFI report (MFG Inc, 2001) demonstrated that there were no COls present in soils adjacent to
the OBL at concentrations exceeding the conservative risk -based screening values. As a result, soils do
not present a risk. The RFI results did show that groundwater in a few wells contained total cyanide that
exceeded the screening values. The unit was retained in the corrective action process because of the
detection of total cyanide in selected groundwater wells above the regulatory standard. Alcoa upgraded
the OBL cover system in 2006 to eliminate point source discharges to surface water under the Facility's
NPDES permit. This upgrade consisted of cover system reconfiguration to mitigate surface water
infiltration, control stormwater flow, and manage stormwater run-off through infiltration or controlled
discharge under the NPDES permit (Environeering, 2012a).
EHS Support LLC 10

Hydrogeological Conceptual Site Model Update — Badin Business Park
Background
Given that COIs were not identified at the OBL in monitoring events subsequent to the Phase 3 CMS
study, the OBL is not discussed further in this report.
EHS Support LLC 11

Hydrogeological Conceptual Site Model Update — Badin Business Park
Investigation Activities in 2022
3 Investigation Activities in 2022
Investigation activities completed in 2022 were designed to support the development of a refined
understanding of hydrogeological controls on groundwater flow directions and constituent transport at
the former Main Plant and ABL. Hydrogeological properties of various geologic units present at the
Facility were characterized using the following lines of evidence:
• Visual observations of geologic and hydrogeologic properties through observations of drill cores
and excavated test pits.
• Laboratory characterization of soil physical properties to identify hydrogeologic properties of
distinct native soil units, and remolded native soil units as a proxy for fill derived from native
soils.
• Hydraulic data collection (step drawdown tests) to confirm monitoring wells adequately capture
the most conductive units and to qualitatively assess hydraulic properties of weathered rock
units.
• Measurement of groundwater heads in wells discretely screened across PWR or fractured rock
to capture the most conductive intervals to refine potentiometric maps and assess groundwater
flow directions.
Figure 3-1 illustrates the locations where:
• Soil borings, piezometers, and monitoring wells were installed in 2022.
• Soil physical property samples were collected in 2022.
• Aquifer testing (step drawdown pump tests) was conducted in 2022.
Lithologic data was obtained by drilling 21 monitoring wells (MW200 through MW220), 1 piezometer
(PZ18RD), and 6 soil borings (B300 through B305) (Figure 3-1). Soil borings and monitoring wells were
drilled and installed by SAEDACCO, Inc. of Fort Mill, South Carolina. Initial wells and soil borings were
drilled using the sonic technique to obtain continuous soil and rock cores (MW220, B300 through B305)
for initial characterization of the soil profiles. In the interest of minimizing time in the field, subsequent
monitoring wells were installed using a hollow stem auger and continuous split spoon samples were
collected across the saprolite/weathered rock interface. Air rotary drilling was used at locations where
more competent material precluded the collection of split spoon samples.
Wells and the piezometer were constructed with 2-inch inner diameter polyvinyl chloride (PVC) screens
with 0.01-inch slotted PVC screens. Screens were targeted in PWR (or fractured rock where PWR was
absent or dry) with short lengths (5 to 10 feet) to avoid screening across overlying soil units. Wells were
developed by surging with a surge block followed by purging with a submersible pump. Boring logs for
the newly installed monitoring wells that include detailed well construction information are provided in
Attachment A. Wells were surveyed by a North Carolina licensed Professional Land Surveyor; survey
data and well construction details are provided in Attachment B.
EHS Support LLC 12

Hydrogeological Conceptual Site Model Update — Badin Business Park
Investigation Activities in 2022
LEGEND
IM 2022 Test Pit Locations
Q 2022Aquifertesting locations
Q 2022 Soil Physical Properly 5amples
2022 Drilling Locations
Boring
O MW
B302
B305 •
•
13303
r
'3.3nn
MW220 jO
0M W 201
'Former
Main Plant
Figure 3-1 2022 Investigation Locations
EHS Support LLC 13

Hydrogeological Conceptual Site Model Update — Badin Business Park
Investigation Activities in 2022
Soil characterization samples were obtained from seven drilling locations. Samples were collected in
Shelby tubes to be representative of in situ conditions. Samples were also collected in bags and
reconstituted in the lab as an indicator of the hydraulic properties of fill composed of native soils.
Samples were submitted to integrated Testing Laboratories of Houston, Texas for the following soil
physical parameter analysis:
• Effective porosity package (moisture content [ASTM D2216], bulk density [American Petroleum
Institute {API} RP40], total and effective porosity [ASTM D425]).
• Hydraulic conductivity package (hydraulic conductivity and effective permeability to water [API
RP 40 and USEPA 9100], grain density and dry bulk density, total porosity, air -filled porosity, and
total pore fluid saturation [API RP 40], and moisture content [API RP 40 and USEPA 9100]).
Laboratory reports for soil physical results are provided in Attachment C and data are summarized in
Table 3-1.
Table 3-1 Soil Physical Properties Summary
Sample
Location
MW-201
MW-201
MW-203
MW-204
MW-208
MW-211
MW-212
MW-218
MW-218
Sample
Depth
(feet)
5 to 7
8 to 9
5 to 7
5 to 9
7 to 9
9 to 13
7 to 9
5 to 7
15 to 17
Sample Lithology
Residual Soil/Saprolite Transition
Saprolite
Residual Soil
Saprolite
Saprolite
Residual Soil
Residual Soil
Residual Soil
Saprolite
Sample
Orientation
Vertical
Vertical
Vertical
Remolded
Vertical
Remolded
Vertical
Vertical
Remolded
Effective Porosity
(Percent Volume)
Hydraulic
Conductivity
(cm/sec)
20.93
1.55E-06
17.11
1.58E-07
11.57
2.02E-07
22.21
1.49E-06
20.62
2.36E-07
18.61
3.18E-07
14.56
5.04E-07
17.23
4.28E-07
16.57
3.38E-06
cm/sec = centimeters per second
Aquifer testing was completed in nine wells screened across PWR or fractured rock using the step-
drawdown method. The method involved inserting a Monsoon° pump and Levellogger° pressure
transducer into the test well and the water level was allowed to equilibrate. Pumping was initiated and
the rate was increased in steps and terminated after approximately 1 hour or when the well ran dry.
Pumping rates were determined based on the water level response of the particular location and ranged
from 200 to 7,300 milliliters per minute (mL/min). Data was recorded in 5-second intervals using the
pressure transducers and converted to a depth to water. Hydraulic conductivity was then calculated
from the pumping rate and transducer data using Aqtesolv° software. Detailed aquifer testing
calculation results and software output are provided in Attachment D and summarized in Table 3-2.
EHS Support LLC 14

Hydrogeological Conceptual Site Model Update — Badin Business Park
Investigation Activities in 2022
Table 3-2 Aquifer Testing Results
Location
Method
Hydraulic Conductivity
(cm/sec)
MW-201
Theis step test — confined aquifer
1.93E-04
MW-203
Theis step test — confined aquifer
4.22E-05
MW-205
Theis step test — confined aquifer
3.36E-04
MW-209
Theis step test — confined aquifer
4.91E-05
MW-210
Theis step test — confined aquifer
4.52E-05
MW-211
Theis step test — confined aquifer
2.74E-04
MW-218
Theis step test — confined aquifer
6.42E-05
MW-220
Theis step test — confined aquifer
2.12E-05
BF-2
Theis step test — confined aquifer
3.94E-05
Calculations performed by Civil Environmental Consultants (CEC) of Greenville, South Carolina (included in Attachment D).
cm/sec = centimeter per second
Depth to groundwater measurements were completed on September 9, 2022, and October 19, 2022, in
newly installed monitoring wells and existing wells screened across PWR or fractured rock. Depth to
water measurements were gauged from the top of casing with an electronic resistivity probe, which
measured the water depth with a precision of ± 0.01 foot. The measuring device was cleaned prior to
use in each well. Water levels were captured prior to any subsequent disturbance to the well. The water
levels in the wells were made consecutively in the shortest period (less than one day). Results are
discussed in Section 6.5. Groundwater elevation measurements are provided in Attachment E.
Two test pits were excavated, and groundwater samples were collected from wells and borings
upgradient of the West Fill Area (SWMU 46) to better understand groundwater hydrology and
contaminant fate and transport in this area. Test pit locations and the West Fill Area are shown on
Figure 3-1. Test pits were dug to qualitatively observe the location and magnitude of groundwater flow
over a subsurface profile in the upslope and flat area of the former Main Plant. Test pits were secured
and left open for approximately 24 hours to observe if and how much groundwater accumulated.
Residual soil/saprolite intervals of the test pits were dry and minor groundwater seepage was observed
along fractures in the PWR interval. Observations from the test pits are used to support the Site
hydrogeologic conceptualization as described in Section 6.
Samples were collected under chain of custody protocol from borings B300, B301, B302, B303, B304,
B305, MW218, and MW219 and analyzed using USEPA-approved methods for fluoride (Method 300.0),
total cyanide (Method D7511-12), and available and free cyanide (Method OIA-1677). Samples were
collected using a portable (non -dedicated) bladder pump using low -flow purging and sampling
procedures. Reusable equipment used to collect groundwater samples was decontaminated before use
at another well. Dedicated air supply and water discharge tubing lines were used at each well to reduce
the level of decontamination required between wells. Each well was purged at a relatively low rate to
reduce drawdown. The purge water was field-tested for pH, turbidity, specific conductance, oxidation-
reduction potential (ORP), and temperature. Wells were purged according to low flow sampling criteria
(Puls and Barcelona, 1996). Samples were collected directly into laboratory -prepared bottles, labeled,
and placed on ice in sealed coolers for delivery to a North Carolina -certified laboratory for analysis. All
EHS Support LLC 15

Hydrogeological Conceptual Site Model Update — Badin Business Park
Investigation Activities in 2022
purge water was containerized in 55-gallon drums, labeled, stored at a secure Site location, and will be
disposed of when waste characterization is complete. Groundwater field parameter data and the
laboratory analytical report are included in Attachment F. No compounds were detected above
applicable NC 2L standards.
EHS Support LLC 16

Hydrogeological Conceptual Site Model Update — Badin Business Park
Regional Setting
4 Regional Setting
4.1 Regional Geology
The Facility is located in the Piedmont physiographic province of the Appalachian Highlands
physiographic region (Fenneman, 1917). The Piedmont physiographic province is characterized by
dominant ridgelines that follow the strike of resistant lithologies, valleys perpendicular to ridgelines that
follow regional fault structures, and many small hills cut by streams flowing in a dendritic pattern.
Streams are associated with flat -lying alluvial deposits (alluvium) at the base of valleys. Overall, the
ground surface has relatively low relief due to heavy weathering of the underlying rocks. The intense
weathering promotes the collapse of hillsides resulting in localized colluvium deposits. Rocks underlying
the eastern half of the Piedmont (where the Facility is located) belong to the Carolina Slate Belt (Figure
4-1).
Inner Piedmont
Carolina Slate Belt
Triassic Basins
Raleigh Belt
Eastern Slate Belt
Source: Steponaitis, V.P., J.D. Irwin, T.E. McReynolds, and C. Moore. 2006. Stone Quarries and Sourcing in the Carolina Slate
Belt. Research Report 25, Research Laboratories of Archaeology, University of North Carolina, Chapel Hill, NC 27599-3120. April.
Figure 4-1 Regional Geographical and Geological Overview
Rocks of the Carolina Slate Belt were deposited through a combination of sedimentary processes and
fallout from volcanic eruptions (North Carolina Geological Survey, 1985). Sediments that lithified to form
Slate Belt rocks were originally deposited beneath water, likely in a submarine setting (Feiss, 1982). The
North Carolina Geological Survey (1985) describes Carolina Slate Belt rocks in the former Main Plant and
ABL areas as Cambrian age metamudstone and meta-argillite interbedded with metamorphosed
sandstone, conglomerate, and metavolcanic rocks of the Cid Formation. Regionally, the mudstone
grades upward into shale (Stromquist and Sundelius, 1969). The lithologic variation has produced
northeast -southwest trending ridgelines and valleys that follow the strike of bedding. Carolina Slate Belt
rocks in the region are mildly metamorphosed and deformed, leading to northeast -southwest fold hinge
axes in the Facility vicinity that are intersected by perpendicular faults. The orientations of bedding/fold
hinges and the perpendicular fractures broadly dictate the crisscross pattern of river drainages in the
area. The orientation of Little Mountain Creek aligns with perpendicular fractures, whereas the
perpendicular tributaries follow the strike of bedding and fold hinges.
At the OBL east of the former Main Plant, the Cid Formation consists of mafic metavolcanic rocks
composed of dark green to black basalt flows and basaltic tuffs interbedded with intermediate volcanic
rock and metamudstone. In this location east of the former Main Plant, drainages follow a dendritic
EHS Support LLC 17

Hydrogeological Conceptual Site Model Update — Badin Business Park
Regional Setting
pattern. A large-scale geologic map of the Facility region sourced from Stromquist and Henderson (1985)
is provided as Figure 4-2.
Fracture orientations measured at former Alcoa
Badin Works (MFG, Inc., 2001)
r
r
Pzgu - Uralitized gabbro
£mf - Tuffaceous siltstone
£cf - Rhyolitic tuff
£cft - Rhyolitic tuff breccia
£cm - Tuffaceous mudstone
Ecmb - Basaltic rocks
Ecmt - Rhyolitic tuffs
Base map source: Stromquist, A.A. and
Henderson, J.R., 1985. Geologic and
geophysical maps of south-central North
Carolina (No. 1400).
MFG, Inc., 2001. RCRA Facility
Investigation Report Volume I of II. Alcoa
Badin Works, Badin, North Carolina.
March.
Little
Mountain
Creek Ecf
FOr IT1er
Main Plant
Alcoa/Badin
Landfill
Old Brick,
Landfill
Figure 4-2 Regional Geology and Geologic Structure Orientations
EHS Support LLC 18

Hydrogeological Conceptual Site Model Update — Badin Business Park
Regional Setting
Rocks of the Piedmont are heavily weathered at the ground surface due to a combination of high rainfall
and the humid and warm climate. As a result of the climate, the thickness of the rock weathering profile
in the Piedmont can range anywhere between 1 and 25 meters, although weathering is typically thinner
on ridgetops and slopes (Buol and Weed, 1991; Sowers and Richardson, 1983). The subsurface profile is
characterized by a gradual transition from soil through decomposed to unweathered rock with
increasing depth. The boundaries between different weathering zones are not well defined and the
transitions are gradual. The thickness of the zones may also be highly variable over small spatial extents
(e.g., up to 20 meters over an area the size of a city block; Sowers and Richardson, 1983). A generalized
soil profile overlying metasedimentary rocks in the Piedmont Physiographic province is shown on Figure
4-3.
a
3
6
w
w S
w
2
i12
a
w
15
18
// /////
////////
Soil
Massive subsoil
/////////
////////✓
/////////
/////////
/////////
/////////
Saprolite (thick)
/////////
/////////
7'////////
/////////
/////////
/////////
'�
Weathered rock
'''
..
Unweathered rock
', rice':
Source: Pavich, M.J., G.W. Leo, S.F. Obermeier, and J.R. Estabrook. 1989. Investigations of the characteristics,
origin, and residence time of the upland residual mantle of the Piedmont of Fairfax County, Virginia (No. 1352).
Figure 4-3 Generalized Weathering Profile and Nomenclature of Foliated Metasedimentary Rocks
from the Piedmont Physiographic Province
Unweathered rock is present beneath the weathering zone, and typically has minimal to no staining on
fractures and joints, and mica and feldspar are unaltered (Pavich et al., 1989). A zone of PWR exists
above the unweathered rock and is characterized by soft to hard rock where joints and fractures are
typically stained, and primary rock minerals are altered in part.
PWR grades upward into a zone of residual soils. In general, residual soils are derived in place from the
chemical decomposition (weathering) of primary minerals in the underlying PWR and bedrock. If
weathering results in small volume changes and the original fabric and most original rock defects are
retained, soils are called 'saprolites' (Sowers and Richardson, 1983). When the weathering is
accompanied by large volume changes and little or none of the original rock fabric remains, residual soils
EHS Support LLC 19

Hydrogeological Conceptual Site Model Update — Badin Business Park
Regional Setting
are often called 'residual soils' or 'massive sub soil'. Examples of the appearance of residual soil,
saprolite, and PWR from photographs taken at the Facility are provided in Figure 4-4.
f£1esidual Soil
(high storage, low. p'rmeability)
-
high.storage, low permeability)
Partiall.
Weathered
• (PWR)
.(High permeability, row sto
Figure 4-4 Examples of Native Soils Encountered at the Facility
4.2 Regional Hydrogeology
The extent of weathering has important implications for the hydrogeological properties of the soil
profile. Unweathered rock and PWR are characterized by high permeability from fracture connectivity,
whereas the dominantly clay saprolite/residual soils are characterized by high porosity and low
permeability. The porosity -permeability relationship through a generalized weathering profile is
illustrated on Figure 4-5.
EHS Support LLC 20

Hydrogeological Conceptual Site Model Update — Badin Business Park
Regional Setting
Profile
Residual Soil
Saprolite
Partially
Weathered
Rock
I
I
1
Fresh Rock I
Description
Sail 'A' horizon: generally < 0.5 m thick. Generally
a red sandy soil, high porosity, well drained and leached
Soil'B' horizon: depositional zone with formation of
laterite or calcrete. Thickness varies up to 15 in
Zone'a' (soil'C' zone): Few metres thick
sandy clay or clay sand, often concretionary
Zone 'b': 1-30m thick
Massive accumulation of secondary minerals (clays) in which
some stable primary minerals may be present in their original
form
Low permeabiiiry and high porosiry
Zone 'c': 1-30m thick
Rock which is progressively altered upward to a granular
friable layer of disintegrated crystal aggregates and rock
fragments
Intermediate porosity and permeability
Zone 'd': 1-20m thick
Fractured and fissured rock
Low porosity but moderate to high permeability in fissures
Fresh rock
Permeability
(relative)
Low High
Porosity
(approximate)
0 (` ) 40
Source: Acworth, R.I. 1987. The development of crystalline basement aquifers in a tropical environment. Quarterly Journal of
Engineering Geology and Hydrogeology, 20(4), pp.265-272.
Figure 4-5 Typical Rock Weathering Profile
The residual soil and saprolite are storage zones where groundwater is 'trapped' due to the high relative
porosity values (typically between 35 and 55 percent) and low relative permeability (Figure 4-5).
Precipitation infiltrates soil until it reaches the saturated zone, where it is stored in pore spaces.
Groundwater in the storage zone seeps from residual soil or saprolite into the PWR, where the porosity
is lower but the relative permeability is substantially higher. It is within the PWR that groundwater
primarily discharges and flows (LeGrand, 1967).
The water table elevations in the Piedmont soils generally follow the ground surface and can vary by
several feet in response to precipitation events (LeGrand, 1967 and 2004; Buol and Weed, 1990; Sowers
and Richardson, 1983; Daniel and Dahlen, 2002; Swain et al 2004; McVay et al., 2004). However, the
presence of structures and fractures in PWR and unweathered rock can influence groundwater flow
directions. Groundwater flow is typically 10 times greater parallel to planar structures in PWR than
perpendicular to it (Sowers and Richardson, 1983). In the rock, groundwater is contained entirely in
fractures, and groundwater elevations can vary over a few feet depending upon the localized
interconnectivity of fractures (Sowers and Richardson, 1983).
EHS Support LLC 21

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Geology
Site Geology
Geology and hydrogeology at the Facility differ from the regional framework due to the extensive
engineered cut and fill activities that took place during Facility construction and redevelopment
activities throughout the 1900s. The magnitude of change is visualized in Figure 5-1, which shows the
pre -development topography reconstructed from a 1913 topographic survey and lake bathymetry data.
Main Plant
l/.
Pre-1913 Topography
and Generalized Groundwater Flow
Figure 5-1
I,ODO 2,000 feet
N J
Post-1916 Topography
and Generalized Groundwater Flow
Badin Lake
Conceptual Effect of Facility Development on the Groundwater Flow System
Before filling Badin Lake and excavating areas of native soils, groundwater flow likely followed a typical,
topographically -driven Piedmont groundwater flow system with a topographic divide across the area
that would become the former Main Plant (Figure 5-1). Groundwater in the southern portion of the
former Main Plant flowed toward the southeast and ultimately discharged to the Little Mountain Creek
floodplain. Groundwater in the northern portion of the former Main Plant would have likely flowed east
and northeast to the former valley that became Badin Lake.
Filling Badin Lake and excavation and fill for development of the Facility modified the natural
groundwater flow system. Badin Lake is not a natural feature; it is a man-made feature that was filled
against a steep -sided valley wall of exposed and permeable PWR. PWR is observed outcropping along
the lake shore (Figure 5-2) and was also documented on the lake bottom when the lake was lowered for
the Badin Lake sediment capping project (photo 96 of Power Engineers Inc., 2013). Extensive excavation
removed residual soils over a substantial portion of the former Main Plant leaving only PWR and rock
and introduced native soils and production wastes to valleys in other areas of the Facility. This
engineering work conducted over the 1900s modified the geological controls on groundwater flow
directions.
EHS Support LLC 22

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Geology
Figure 5-2 December 2021 Photo of PWR Outcropping Along the Shore of Badin Lake Adjacent to
the Former Main Plant
As illustrated conceptually on Figure 5-1 and documented in the following sections, groundwater is now
recharged both by Badin Lake from the east and from higher elevations west of the former Main Plant
and ABL. Recharge to groundwater from Badin Lake occurs through a direct connection to permeable
PWR, and groundwater flows from the northeast to southwest through PWR and rock along regional
structures to ultimately discharge on the floodplain of Little Mountain Creek.
5.1 Areas of Engineered Cut and Fill
To demonstrate the magnitude of topography changes and identify where the location of PWR and
infrastructure within PWR affects groundwater flow directions, the modern ground elevation was
compared to elevation data from a survey conducted in 1913 prior to development of the Facility
(Figure 5-3).
Figure 5-3 was developed by digitizing elevation contours measured in 1913 before plant development
and subtracting the modern (2003) elevation obtained from public 1/9 arc -second digital elevation data
obtained from the USGS. The Alcoa elevation datum used on the 1913 map was corrected by subtracting
31.48 feet to match the NAVD88 datum. Where historical contours did not extend, fill thickness was
taken from Facility boring logs that fully penetrated the fill. The result is shown on Figure 5-3; the
EHS Support LLC 23

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Geology
excavated areas are shaded gray, and the filled areas are shaded red. White shading indicates areas
where there was minimal elevation change.
LEGEND
El Area of Fill ( Env roneeri rig 20120
1
Topography Change 1913 to 2003 (feet)
a-25
-5
to
ICI
25
>50
500 000 R
Alcoa/Badin
Landfill
Gray = excavated area
Red = filled area
Note: Historic elevation data did not extend north of the Pine Grove area; therefore, fill areas are not shown for these locations.
Figure 5-3 Areas of Engineered Cut and Fill
EHS Support LLC 24

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Geology
In areas where valleys were filled (e.g., ABL, West Fill Area, On -Site Landfill), material was placed upon
the existing saprolite and residual soil where it was present. Locations where residual soil and saprolite
are believed to be thin or absent beneath fill are only very localized portions of drainages that occupied
the bottom of subsequently filled ravines. Geophysical surveys presented in the 2001 RFI (MFG Inc,
2001) and CMS Phase 3 (Environeering, 2012b) reports indicate that fill is heterogenous; there are
localized areas where fill contains industrial materials interlayered with reworked native soils. Other
areas likely consist of native soils that were excavated and used as fill during Facility development and
construction.
In areas where material was excavated, residual soil and saprolite were entirely removed from
underlying PWR and rock in some areas and replaced by a thin veneer of fill. Figure 5-4 was developed
from Facility boring logs and shows the cross section that runs from Badin Lake to Little Mountain Creek,
the relationship of fill to residual soils in former valleys, and how soil was removed from PWR and rock
in places.
Northeast Southwest
A A'
0
m
0
0
c
E
o
0
_o 0
0 o
w
In
0
O
fo
O
7
N O
w V1
V
3G
Ground Surface
1913
\\J yea 50� Ground Surface
acz Ja\ �e /am Present Day
•\ L/
QS�� sa yaQsom ysec 2 N
N N N i144
3 33 2 _
I I I
0
1000
1111 Fill
■ ReslduaiSell
Saprolite
Partially Weathered Rock
^ Notes:
Fractured Rock L. Red wells are no longer present.
Borehole
Monkaring Wel! Screen(
well production znne
2000
I I I
I I I
3000
Distance (feet)
4000
I I I
Figure 5-4 Cross -Section from Badin Lake to Little Mountain Creek Crossing the Former Main
Plant and ABL
5.2 Areas of Excavated Soils
5000
To demonstrate areas where excavation depths largely removed soils, an image was developed to show
the depth to PWR or rock (Figure 5-5). The image was developed from historical boring logs and
observations of outcrops to show the depth to PWR or fractured rock across the Facility. Beneath the
E
}
Little Mountain Creek
EHS Support LLC
25

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Geology
western edge of the former Main Plant, shallow PWR or rock is present below a thin veneer (generally
less than 10 feet thick) of unsaturated clayey fill.
LEGEND
o PWR Control Paints
Depth to PWR or Fractured Rock (feet)
�0
1
5
10
0 1s
I
I
20
25
1 130
1 135
El 40
�45
> 50
500 1,000 ft
Al€oa/Badin
Landfill
Rine
Grove
flnsite
Landfill
Former
-° Main Plant
Figure 5-5 Depth to PWR or Fractured Rock
EHS Support LLC 26

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Geology
Residual soils and saprolite were removed from the underlying PWR and fractured rock over a large
portion of the former Main Plant in this area. Where residual soil and saprolite were largely removed
and replaced with a thin veneer of fill, precipitation can infiltrate directly into PWR or rock and the
dominant control on the groundwater flow direction is geologic structures within these units. Based on
strike and dip measurements of bedding in rock and PWR outcrops measured with a Brunton compass
during field efforts in 2022 (Figure 5-6), the strike of bedding and predominant geologic structures at the
former Main Plant trends between Badin Lake and the flood plain of Little Mountain Creek. Note, the
strike and dip features measured in 2022 align with the strike of regional geologic structures indicated
on Figure 4-2.
Note: Numbers indicate bedding dip in degrees from horizontal. Short lines indicate dip direction, long lines indicate strike
direction.
Figure 5-6 PWR and Rock Bedding Strike and Dip Measured in 2022
EHS Support LLC
27

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Geology
5.3 Areas of Fill
As indicated on Figure 5-3, areas of fill are present at the north end of the plant, where they were used
to fill in an eastward trending natural ravine. This valley is referred to as the "Northwest Valley" in other
facility documents and includes two identified SWMUs — the On -Site Landfill (SWMU-1) and the Pine
Tree Grove (SWMU 44). A second eastward trending ravine was present to the south and is now
occupied by the West Fill Area. The ABL was developed over a bifurcated natural ravine that trended
south to southwestward toward Little Mountain Creek. Materials used to fill the ravines included both
natural soils and anthropogenic materials (Environeering, 2012b).
At the Pine Tree Grove area, the valley terminated at an embayment in Badin Lake that was filled at
some time in the mid- to late-1900s. Fill materials consist of decaying organic material, mulch, and wood
debris; sand, silt, and clay soils; construction debris including gravel, concrete, brick, and rock fragments;
aluminum scrap; and granular carbonaceous material. Primarily clayey silt residual soils and saprolite are
present beneath fill materials. PWR is present beneath the residual soils (Environeering, 2012b).
In the West Fill Area, fill materials consist primarily of sand, silt, and clay soils with minor lenses of
granular carbonaceous material. Residual soils and saprolite are present beneath fill materials and are
mainly clayey -silt with subordinate sandy silt/silty sand. Saprolite and residual soils are thin and less
than 1 foot thick near the center of this historical valley and are underlain by PWR (Environeering,
2012b).
Fill at the ABL is described as concrete slabs, brick and concrete fragments, bottles, black cinders, nails,
rope, aluminum sheeting, plastic sheeting, organic and wood fragments, coal, rubber, and metal pieces.
A substantial amount of natural materials and construction debris were placed in the ABL following
plant development activities.
As indicated on Figure 5-3, areas of fill are spatially discrete and further modified by remediation
activities (e.g., capping and drainage modifications to the On -Site Landfill and ABL; Section 2.5). The only
continuous unit at the Facility is the PWR-fractured rock system, and the hydraulic properties and
characteristics of the PWR-fractured rock system control groundwater fate and transport across the
former Main Plant and ABL.
EHS Support LLC 28

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
6 Site Hydrogeology
This section summarizes the primary controls on hydrogeology at the Facility, with supporting
information provided in Section 6.1 through Section 6.5. The primary controls for hydrogeology at the
Facility are the location of groundwater recharge on the slope to the west of the Facility, from Badin
Lake east of the Facility, and the location of permeable units and associated structures that direct
groundwater flow. The location of infrastructure and the relationship to permeable units also places an
important control on groundwater flow directions. The primary permeable units at the Facility are PWR
and fractured rock. The importance of groundwater flow in the PWR is evident from observations of the
test pit completed near boring B300 in 2022. A test pit was excavated through residual soil and saprolite
to intercept the PWR. Observations of the test pit walls indicate seepage along PWR and rock fractures,
whereas the residual soil and saprolite were observed to be dry (Figure 6-1).
s. Residual
Soil/Saprolite
(Dry)
Transition to
Partially
Weathered
Rock (PWR)
Figure 6-1 Groundwater Seepage in Test Pit Walls Completed in PWR
6.1 Monitoring Well and Piezometer Network
In March 2020, Alcoa performed an assessment of the monitoring well network. Of the 113 wells and
piezometers documented at the Badin Business Park and outlying SWMUs, 106 are believed to be
present. This does not include the 21 monitoring wells and 1 piezometer installed in 2022. The following
details the 7 wells that are believed to be inoperable.
Badin Business Park wells BF-3, BF 4, BF-7, and B016-MW-1 through B016-MW-3 were located in areas
impacted by 2012 demolition activities and are assumed to be destroyed. Well MW-26 was located in an
area south of the Pine Tree Grove Area and is believed to have been affected by soil placement activities
and is no longer accessible.
EHS Support LLC
29

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
Wells have been installed by different contractors over the years, and lithology descriptions differ. Wells
are generally screened across the following lithologies (Environeering, 2012b):
• Soil units, including residual soil or saprolite (not always distinguished from each other)
• PWR described as hard weathered rock (HWR) or soft weathered rock (SWR)
• Fractured rock that is relatively unweathered
The focus of the present study is the monitoring wells listed in Attachment E that are screened in PWR
and/or fractured rock, or with screens or sand packs that partially span low permeability saprolite and
are mostly screened in PWR.
6.2 Hydraulic Conductivity
Hydraulic conductivity values calculated from slug or pumping tests in Facility monitoring wells have
been provided in several historical reports. Historical hydraulic conductivity for bedrock (including
pump test data from the present study) is provided in Table 6-1. Note, all values in Table 6-1 were
converted to centimeters per second (cm/sec) for consistency.
EHS Support LLC 30

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
Table 6-1 Hydraulic Conductivity Data Summary
Well
Location
Screen Material
Test type
Hydraulic
Conductivity
(cm/sec)
Source
ABL-MW-1
ABL
PWR/Rock
Average of slug in and slug out
8.33E-05
Aquaterra, 1991a
ABL-MW-1
ABL
PWR/Rock
Slug out
9.20E-05
MFG Inc, 2001
ABL-MW-6
ABL
PWR/Rock
Average of slug in and slug out
7.29E-04
Aquaterra, 1991a
ABL-PZ-1I
ABL
PWR/Rock
Slug in
5.70E-05
MFG Inc, 2001
ABL-PZ-1D
ABL
PWR/Rock
Slug in
3.50E-05
MFG Inc, 2001
ABL-PZ-21
ABL
PWR/Rock
Slug in
4.30E-05
MFG Inc, 2001
ABL-PZ-2D
ABL
PWR/Rock
Slug in
6.00E-05
MFG Inc, 2001
ABL-PZ-31
ABL
PWR/Rock
Slug in
1.40E-04
MFG Inc, 2001
ABL-PZ-3D
ABL
PWR/Rock
Slug in
2.10E-04
MFG Inc, 2001
MW-2A
Main Plant
PWR/Rock
Average of slug in and slug out
4.16E-04
Geraghty & Miller, Inc., 1995
MW-6A
Main Plant
PWR/Rock
Average of slug in and slug out
7.06E-04
Geraghty & Miller, Inc., 1995
MW-20A
Main Plant
PWR/Rock
Average of slug in and slug out
2.09E-05
Geraghty & Miller, Inc., 1995
MW-25A
Main Plant
PWR
Average of slug in and slug out
7.16E-04
Geraghty & Miller, Inc., 1996
MW-1
Main Plant
PWR
Slug out
2.97E-05
Law, 1990
MW-3
Main Plant
PWR
Slug out
3.88E-05
Law, 1990
MW-8
Main Plant
PWR
Slug out
2.11E-03
Geraghty & Miller, Inc., 1996
MW-9
Main Plant
PWR
Slug out
7.44E-03
Geraghty & Miller, Inc., 1996
MW-17
Main Plant
PWR
Slug out
6.93E-05
Geraghty & Miller, Inc., 1996
MW-201
Main Plant
PWR
Step drawdown (pump)
1.93E-04
This report
MW-203
Main Plant
PWR
Step drawdown (pump)
4.22E-05
This report
MW-205
Main Plant
PWR
Step drawdown (pump)
3.36E-04
This report
EHS Support LLC
31

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
Well
Location
Screen Material
Test type
Hydraulic
Conductivity
(cm/sec)
Source
MW-209
Main Plant
PWR
Step drawdown (pump)
4.91E-05
This report
MW-210
Main Plant
PWR
Step drawdown (pump)
4.52E-05
This report
MW-211
Main Plant
PWR
Step drawdown (pump)
2.74E-04
This report
MW-218
Main Plant
PWR
Step drawdown (pump)
6.42E-05
This report
MW-220
Main Plant
PWR
Step drawdown (pump)
2.12E-05
This report
BF-2
Main Plant
PWR
Step drawdown (pump)
3.94E-05
This report
PWR/Rock geometric mean: 1.25E-04
MW-6
Main Plant
Anthropogenic Fill
Average of slug in and slug out
1.72E-04
Geraghty & Miller, Inc., 1995
MW-25
Main Plant
Anthropogenic Fill
Slug out
7.37E-03
Geraghty & Miller, Inc., 1996
MW-26
Main Plant
Anthropogenic Fill
Slug out
9.02E-03
Geraghty & Miller, Inc., 1996
ABL-PZ-2S
ABL
Anthropogenic Fill
Slug out
2.30E-04
MFG Inc, 2001
Anthropogenic Fill geometric mean: 1.27E-03
MW-ML-3
ABL
Soil/PWR
Average of slug in and slug out
3.71E-04
Aquaterra, 1991a
MW-ML-4
ABL
Alluvium/Soil/PWR
Average of slug in and slug out
4.34E-05
Aquaterra, 1991a
MW-ML-5
ABL
Alluvium/Soil/PWR
Average of slug in and slug out
6.71E-04
Aquaterra, 1991a
ABL-MW-7
ABL
Fill/Alluvium
Pump test
1.30E-03
Environeering, 2015
MW-2
Main Plant
Soil/Saprolite/PWR
Slug out
7.97E-05
Law, 1990
MW-2
Main Plant
Soil/Saprolite/PWR
Average of slug in and slug out
3.25E-04
Geraghty & Miller, Inc., 1995
MW-4
Main Plant
Soil/SWR
Slug out
2.18E-04
Law, 1990
MW-5
Main Plant
Fill/Soil/PWR
Slug out
1.37E-04
Law, 1990
MW-5
Main Plant
Fill/Soil/PWR
Average of slug in and slug out
1.04E-03
Geraghty & Miller, Inc., 1996
PZ-6
Main Plant
Fill/Soil
Average of slug in and slug out
3.42E-03
Geraghty & Miller, Inc., 1996
EHS Support LLC
32

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
Well
Location
Screen Material
Test type
Hydraulic
Conductivity
(cm/sec)
Source
ABL-PZ-1S
ABL
Native Fill Material/Saprolite
Slug Out
6.70E-06
MFG Inc, 2001
ABL-PZ-4
ABL
Saprolite/Alluvium/Fill
Material
Slug Out
9.10E-04
MFG Inc, 2001
Mixed rock geometric mean: 2.80E-04
ABL = Alcoa Badin Landfill
cm/sec = centimeters per second
PWR = partially weathered rock
SWR = soft weathered rock
Aquaterra, Inc. 1991a. Preliminary Soil and Ground Water Assessment, Badin Municipal Landfill, Aluminum Company of America, Inc., Badin, North Carolina. August 14.
Environeering, 2015. Alcoa Badin Landfill and Former Ball Field Sampling Activities. Former Badin Works Facility, Badin, North Carolina. September 15.
Geraghty & Miller. 1995. Hydrogeologic Investigation at SWMU #1 - The On -Site Landfill for Aluminum Company of America Badin, North Carolina. October.
Geraghty & Miller. 1996. Pine Tree Grove Area Investigation for Aluminum Company of America, Badin, North Carolina. November.
Law. 1990. Phase I Ground -Water Assessment Northwest Valley; Alcoa-Badin Works.
MFG Inc. 2001. RCRA Facility Investigation Report Volume I of II. Alcoa Badin Works, Badin, North Carolina. March.
ENS Support LLC
33

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
Hydraulic conductivity data for wells at the former Main Plant and ABL have been collected from wells
screened exclusively in rock or PWR, and wells exclusively screened in fill materials. Hydraulic
conductivity data exists for several other wells; however, these wells are screened across multiple units
and the values are not representative of native soils. Notably, no hydraulic conductivity data is available
for wells screened exclusively in native soil, except for the following wells:
• ABL-MW-2 was drilled using an air rotary drill and logged from the air rotary cuttings. There is
uncertainty in contacts between units due to the drilling method.
• PZ-5 through PZ-11 are reportedly screened in saprolite, and hydraulic conductivity values from
slug tests are provided in the RFI report (MFG Inc, 2001). Logs for these piezometers are not
available to verify that the lithology intercepted by the screen and filter packs is exclusively
saprolite.
Since the hydraulic conductivity data for ABL-MW-2 and PZ-5 through PZ-11 are not reliable indicators of
the hydraulic properties of native soils, the corresponding hydraulic conductivity values are not included
in Table 6-1.
No Facility monitoring wells are definitively and exclusively screened in residual soil or saprolite at the
Facility, most likely because the units did not yield sufficient groundwater during drilling. To address the
data gap pertaining to the hydraulic properties of residual soil and saprolite, samples were collected in
2022 and submitted for laboratory testing of hydraulic properties (Section 3). Both in situ samples and
reconstituted samples were measured for hydraulic properties to estimate the hydraulic properties of in
situ native soils and soils reworked and used as fill material. The results indicate overall low vertical
hydraulic conductivity values for these units of 1.58 x 10-7to 3.38 x 10-6 cm/sec (Table 3-1).
In contrast to native soils, hydraulic conductivity values of wells screened over fill containing industrial
materials are substantially higher (geometric mean of 1.27 x 10-3 cm/sec; Table 6-1). However, as
described in Section 5.3, areas of fill are spatially discrete and do not form a continuous water -bearing
unit. Furthermore, the hydraulic properties are highly heterogenous with localized, higher hydraulic
conductivity areas defined by SWMUs where industrial materials are present and low hydraulic
conductivity areas where native soils were used to fill topography during plant construction. Vertical
(and lateral) groundwater flow into and out of areas of fill containing industrial materials is limited by
low permeability saprolite and residual soils that were present prior to placement of fill. It is only in
limited and discrete areas, where saprolite or residual soil was eroded or excavated prior to placement
of fill, that there is significant communication between anthropogenic fill and PWR or fractured rock.
Unlike fill materials, PWR and fractured rock occur over the entire former Main Plant and ABL areas. As
indicated in Table 6-1, the PWR/fractured rock groundwater system has modest hydraulic conductivity
(geometric mean of 1.25 x 10' cm/sec). The values obtained from PWR wells installed across the
Facility in 2022 using step draw -down tests are a similar order of magnitude to those previously
obtained from Facility PWR wells via slug tests and indicate the PWR has similar hydraulic properties
across the former Main Plant and ABL. Because of the broad extent and consistent hydraulic
conductivity values, PWR is the primary unit through which groundwater moves and controls COI fate
and transport at the Facility.
As described in previous studies, the combination of weathered bedrock and fractures in unweathered
bedrock creates intervals of high hydraulic conductivity. The importance of fractures for creating areas
EHS Support LLC 34

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
of higher hydraulic conductivity is evidenced by the loss of fluid circulation during coring and drilling at
MW-20A (Geraghty & Miller Inc, 1995). The orientation of these fractures is an important factor that
controls groundwater flow directions.
Vertical Groundwater Gradients
Vertical groundwater gradients at the former Main Plant were studied during the 2001 RFI (MFG Inc,
2001) and are summarized below. Water -level data from paired wells with screens completed at
different elevations were historically evaluated. Wells that were evaluated included the MW-2/2A, MW-
6/6A, MW-20/20A, and MW-25/25A well pairs.
• The MW-2/2A and MW-20/20A well pairs are on the western side of the former Main Plant near
the On -Site Landfill, and a downward vertical groundwater potential from fill to PWR or
fractured rock was noted. These wells are located in and around the On -Site Landfill, and
downward groundwater migration is limited by the presence of pre-existing saprolite and/or
residual soils.
• The MW-6/6A and MW-25/25A well pairs are closer to Badin Lake, and an upward vertical
gradient was noted.
The upward vertical gradient at MW-6/6A and MW-25/25A indicates potential upward groundwater
movement from the PWR and fractured rock into the unconsolidated water table units in areas closer to
the lake. This is consistent with the conceptualization that Badin Lake provides recharge to PWR and
fractured rock along bedding planes exposed beneath the lake level. As indicated on the hydrographs in
Section 6.4, there are periodic and short-lived 'spikes' where there is a downward gradient from fill to
the PWR system in the vicinity of MW-27 and MW-17, likely associated with precipitation events that
soak into higher permeability areas of fill and rapidly dissipate into the PWR groundwater system.
Hydrographs for ABL piezometers were presented in the 2012 Phase 3 CMS following a two-year
transducer deployment (Environeering, 2012b); the data are reproduced in Figure 6-2.
• Transducer data show water levels at the PZ-1S, PZ-11, and PZ-1D cluster (upgradient edge of the
ABL) have consistently downward gradients.
• Near the center of ABL at the PZ-2S/PZ-2D cluster, there are apparent downward vertical
gradients. The magnitude of response in both wells is similar (note, the shallow well appears to
have dried up periodically), and both wells vary in concert.
• At the PZ-3 cluster on the floodplain of Little Mountain Creek, vertical groundwater gradients
are consistently upward.
These results are consistent with groundwater discharge from beneath the ABL and from the hillside to
the west to the floodplain of Little Mountain Creek. Groundwater discharge to the floodplain of Little
Mountain Creek is also supported by periodically flowing artesian conditions at monitoring well ABL-
MW-3, which is located on the western side of the floodplain.
EHS Support LLC 35

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
PZ-1 S
PZ-1 I
520 - PZ-1 D
E
is 0 PZ-2S
500 PZ-2D
Z
E
2
480 -
W
PZ-3D
PZ-3S
PZ-31
460 - —
,10 ,10 ,10 ,10 10 ,10 ,11 •,,�� ,11 11•11 ,11 ,1� •1`Z ,1'L
Fee pp N�� Qs9 od �a� Fee pPc S‘,5' Aug 06' Qgo Fee
Sample Date
NAVD88 = North American Vertical Datum of 1988
Figure 6-2 2010-2012 Transducer Study Results from the ABL
6.4 Historical Groundwater Elevation Data
During the CMS Phase 3 Engineering Data Collection Study (Environeering, 2012b), transducers were
placed in wells in the Pine Grove area for over one year to measure groundwater elevation variations.
Transducers were placed in wells screened over residual soil and PWR (MW-5 and MW-27), fill (MW-25),
or PWR (MW-16, MW-17, and MW-108). The locations of transducer wells are shown on Figure 6-3.
Results of the transducer study were compared to lake level variations and are reproduced for soil and
fill wells (Figure 6-4) and PWR wells (Figure 6-5).
EHS Support LLC 36

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
Note: Orange boxes indicate locations where transducers were placed.
Figure 6-3 Locations of 2011-2012 Transducer Study Wells
500
0 507-
ea
ea
Z
E
O
O
506-
W
505 -
Badin Lake
MW-5
5 1'` ,1^ Feb Pit 1� �� ^;\ le, ' J\ 1� �� qk � q� a` 1k c.�1
Sample Date
NAVD88 = North American Vertical Datum of 1988
Feb oeS PPS Nisei so,
Figure 6-4 2011-2012 Transducer Study — Soil and Fill Wells
EHS Support LLC 37

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
510
509
E
508
ro
ro
7
Z
E
0
a 507
6
N
W
506
505
MW-1 7
Badin Lake
MW-16
.0 11 .11 r�1 .�^, ,^1 ,^2 ,12 ,^2 XL .14- 41,
VP F¢o 959 �1 den �e� 9 5 SeP 06. ta°' 'CleG F� 04 956 ki0 ya'
Sample Date
NAVD88 = North American Vertical Datum of 1988
Figure 6-5 2011-2012 Transducer Study — PWR wells
The transducer study indicated that the lake level was consistently higher than the groundwater
elevation in soil and fill wells MW-5 and MW-25 and was periodically higher than groundwater at MW-
27 (Figure 6-4). The lake level was consistently higher than the groundwater elevation in PWR wells
MW-16 and MW-108 and generally higher than groundwater at PWR well MW-17. At MW-17 and MW-
27, spikes in groundwater elevation above the lake level corresponded with spikes in lake level
elevation. These results indicate that large-scale precipitation events lead to localized recharge that
rapidly infiltrates downward and dissipates into the PWR groundwater system.
It was concluded that Badin Lake may act as a flow barrier to groundwater from the former Main Plant
(Environeering, 2012b). Consequently, groundwater may not discharge to the lake as depicted in the
groundwater contours provided in the RFI (MFG Inc, 2001) and the 2005/2006 Facility -wide
groundwater monitoring events (BHE Environmental Inc., 2005, 2006). However, it was noted in the
CMS Phase 3 that this hypothesis would require additional data collection and verification
(Environeering, 2012b).
EHS Support LLC 38

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
6.5 2022 Groundwater Elevation Data
As described in the 2001 RFI (MFG Inc, 2001), flow within PWR and rock can be complex due to
preferential flow along fracture zones of relatively greater hydraulic conductivity. As a result, flow is not
necessarily perpendicular to the groundwater elevation equipotential lines. To better constrain
groundwater flow potential and directions in PWR and rock, additional PWR monitoring wells were
installed in 2022 to improve the spatial coverage of the well network for understanding interactions
between Badin Lake and groundwater.
Groundwater elevation data for PWR and rock wells was measured in 2022 (Section 3). The results are
tabulated in Attachment E. Groundwater elevations were measured at two different conditions on
September 8, 2022 and October 19, 2022 to assess temporal variability in groundwater flow directions
within the PWR unit. Groundwater elevations were compared to Badin Lake level data to develop
groundwater contours. The data for the following monitoring wells was collected during this time but
not used in contouring:
• MW-110, which is screened in residual soils
• MW-104 and MW-105, which are screened across unspecified soils and PWR
• MW-109, which has a long (25-foot) screen that likely short-circuits different rock fracture
intervals and is unrepresentative of the overall groundwater potentiometric head
Historical Badin Lake level data at Badin Narrows where the lake enters the Yadkin River is available
from the Cube Hydro website2. On September 8, 2022, the lake level was 509.54 feet NAVD88. On
October 19, 2022, the lake level was 509.05 feet NAVD88.
Notably, the lake level remains relatively constant to maximize electricity generation; therefore, large
fluctuations in the lake level are not expected to affect groundwater -lake water interaction. Daily lake
elevations measured between October 2017 through October 2022 at Badin Narrows reported a narrow
range of elevation fluctuations between approximately 505.11 to 509.69 feet NAVD88 (excluding
obvious outliers, e.g., 537.88 feet NAVD88 on October 29, 2022, which would have entirely submerged
the former Main Plant and ABL).
Groundwater elevation contours for the 2022 monitoring events are provided on Figure 6-6 and Figure
6-7 for September 8, 2022, and October 19, 2022, respectively. The contours are overlain with vectors
that indicate the magnitude and direction of groundwater gradients. The results of both monitoring
events indicate that groundwater recharge from Badin Lake in the east and higher elevations in the west
converge in a narrow strip parallel to the lake shore. Note that preferential flow in PWR occurs along
fracture zones of relatively greater hydraulic conductivity, and as a result, flow is not necessarily
perpendicular to the groundwater elevation equipotential lines.
Based on the long-term transducer study shown on Figure 6-4 and Figure 6-5, recharge from Badin Lake
is expected to persist during wetter times. Changes to groundwater conditions will continue to be
assessed during wetter months and in different seasons during 2023 to verify that there is constant
recharge from Badin Lake.
2 http://cubecarolinas.com/lake-levels/
EHS Support LLC 39

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
LEGEND
Monitoring Well with 9/8/2022
Groundwater Elevation (Feet NAVDSS)
4 Screened Over Partially Weathered Rock (PWR)
Screened Over Saprolite and Partia4ly Weathered Rock {PWR}
• Lake Level 9/9/2022 (Cube Hydro)
— 9/8/2022 Groundwater Elevation Contour
Groundwater Flow Direction
(size proportional to gradient)
— West of North Flow Direction
— East of North Flow Direction
Figure 6-6 PWR Groundwater Elevations — September 8, 2022
EHS Support LLC 40

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
LEGEND
Monitoring Well with 10/19/2022
Groundwater Elevation (Feet NAVDSB)
• Screened Dyer Partially Weathered Rock (PWR)
b Screened Over Saprolite and Partially Weathered Rock PWR)
• Lake Level 10/19/2022 (Cube Hydro)
— 10/19/2022 Groundwater Elevation Contour
Groundwater Flow Direction
(size proportional to gradient)
— West of North Flow Direction
— East of North Flow Direction
14
1 1-1. 4 ,
1 1
• r
W-220
500 1,000
Figure 6-7
PWR Groundwater Elevations — October 19, 2022
EHS Support LLC 41

Hydrogeological Conceptual Site Model Update - Badin Business Park
Site Hydrogeology
The groundwater flow direction ultimately curves to flow from northeast to southwest and discharges
primarily to the flood plain of Little Mountain Creek. This result is consistent with the elevation of the
Little Mountain Creek floodplain (less than 470 feet NAVD88), which is almost 40 feet lower than the
typical level of Badin Lake, and along the alignment of regional geologic structures and subsurface
Facility infrastructure.
Seepage Velocity
Groundwater seepage velocity has previously been calculated at the ABL (Aquaterra Inc., 1991a), the
former Main Plant (Geraghty & Miller, 1995), and across both areas during the RFI. In these previous
estimates, various units were lumped together to arrive at Facility -wide seepage velocity values.
Following the updated hydrogeological conceptualization presented herein, whereby groundwater flow
is profoundly affected by the nature of specific units, seepage velocities were calculated for specific
units to better understand the controls on groundwater fate and transport. Seepage velocity is
calculated using the equation:
Ki
v=-
n
Where:
v = seepage velocity
K = hydraulic conductivity
= the groundwater gradient
n = effective porosity
The seepage velocity result in cm/sec is converted to feet per day using standard conversion factors. The
parameters used in the calculations and the results are provided in Table 6-2.
Table 6-2 Seepage Velocity Calculation Parameters
Lithology
Hydraulic
Conductivity
(cm/sec)
Effective
Porosity
(unitless)
Seepage
Velocity ABL
(feet/day)
Seepage
Velocity former
Main Plant
(feet/day)
Seepage Velocity
Western Slope
(feet/day)
Anthropogenic Fill
1.27E-03
0.25
0.56
0.09
0.49
Native Fill
1.17E-06
0.19
6.81E-04
1.05E-04
5.93E-04
Residual Soil
2.94E-07
0.14
2.32E-04
3.57E-05
2.02E-04
Saprolite
1.93E-07
0.19
1.12E-04
1.73E-05
9.79E-05
PWR/Rock
1.25E-04
0.12
0.12
0.02
0.10
Notes:
1. Effective porosity of native fill was taken from the average of remolded sample values, and saprolite and residual soil from
the average of in situ samples, given in Table 3-1. Effective porosity for PWR/Rock uses the value typical of siltstone
(Johnson, 1967). Effective porosity for anthropogenic fill follows reasoning from previous studies (Aquaterra Inc., 1991a).
2. The value for hydraulic conductivity of native fill was taken from the geometric mean of remolded sample values, and
saprolite and residual soil from the geometric mean of in situ samples, given in Table 3-1. Hydraulic conductivity values for
anthropogenic fill and PWR were obtained from Table 6-1.
EHS Support LLC
42

Hydrogeological Conceptual Site Model Update — Badin Business Park
Site Hydrogeology
3. Groundwater gradient was calculated from the groundwater elevations on Figure 6-6 (ABL-MW-6 to PZ-18RD at the ABL is
0.039 Feet per foot (ft/ft); MW-220 to MW-208 at former Main Plant is 0.006 ft/ft; MW-219 to MW-32 for western slope is
0.034 ft/ft).
4. Vertical hydraulic conductivity was measured on saprolite and residual soil; these values are assumed to equal horizontal
hydraulic conductivity.
5. Calculated velocities assume the same gradient across lithologic units, and this condition is expected to vary slightly.
Forthcoming groundwater elevation data will provide the necessary input for future revisions.
ABL = Alcoa Badin Landfill
cm/sec = centimeters per second
PWR = partially weathered rock
As indicated on Table 6-2, seepage velocities are two to three orders of magnitude lower for native fill,
saprolite, and residual soil compared to anthropogenic fill and PWR/Rock. Indeed, the PWR/Rock
estimate is likely biased low as effective porosity in fractured rocks can be as low as 1 percent
(Worthington, 2022), and use of a lower effective porosity value would increase the calculated seepage
velocity an order of magnitude. Seepage velocities are higher where the groundwater gradient is
steeper (ABL and slope west of the Main Plant).
These results support the conclusion that PWR is the primary conduit for groundwater flow at the
Facility, as it is extensively present and has high calculated seepage velocities compared to native soils
and fill derived from them. In contrast, anthropogenic fill has high seepage velocities but is present only
in discrete areas. Seepage into or out of anthropogenic fill is limited by the presence of underlying
saprolite and residual soils, and groundwater flow is controlled by areas where it is in direct contact with
PWR.
EHS Support LLC 43

Hydrogeological Conceptual Site Model Update — Badin Business Park
Geochemistry
7 Geochemistry
A combination of vertical groundwater gradients, groundwater flow primarily through PWR and
fractured rock, and geochemical attenuation appear to be the primary controls on plume geometry at
the former Main Plant. This section summarizes historical data on the distribution of the primary COIs —
fluoride and available cyanide in groundwater at the former Main Plant and ABL — along with a
preliminary evaluation of geochemical controls on COI attenuation to support this HCSM document. A
full description of the current understanding of all COI distributions is provided in the CMS Phase 3
Report (Environeering Inc., 2012b), and is not reproduced here. Investigations following the CMS work
have focused on assessing COI distributions in discrete areas; TCE distributions in the northern area of
the former Main Plant (Environeering, 2018a); and PCB, PAH, fluoride, and cyanide distributions in
surface water and sediment downgradient of the ABL (Environeering, 2018c; Civil Environmental
Consultants [CEC], 2020).
Facility -wide groundwater sampling events were conducted at the ABL and former Main Plant during the
RFI in September and October 1999 (MFG Inc, 2001); at the former Main Plant in August 2011 (BHE
Environmental Inc., 2011) and June 2006 (BHE Environmental Inc., 2006); and during the CMS Phase 3 in
June 2011 (Environeering Inc., 2012b). Planning is currently underway for a Facility -wide groundwater
sampling event.
Based on the magnitude of remedial activities conducted at the Facility, it is anticipated that the current
groundwater concentrations will look significantly different to the historical data described below.
Nature and Extent of Groundwater Fluoride and Cyanide Impacts
Fluoride concentrations in groundwater at the ABL reported in the CMS Phase 3 report (Environeering
Inc., 2012b) identified total fluoride exceeding the NC 2L standard only in piezometers screened within
ABL waste materials (ABL-PZ-15 through ABL-PZ-19) (Environeering, 2012b). Fluoride has not previously
been detected above the NC 2L standard in any perimeter groundwater monitoring well surrounding the
ABL (MW-1 through MW-6).
Subsequent quarterly sampling of the perimeter wells over four quarters (July 11, 2018; October 30,
2018; January 31, 2019; and April 11, 2019) did not identify fluoride above the NC 2L standard in any
perimeter well (Environeering, 2019). As discussed in Section 7.2.2, fluoride -bearing surface water was
identified in the eastern drainage ditch located on the floodplain of Little Mountain Creek and
interpreted to originate from upwelling groundwater. However, concentrations decreased and were
below NC 2L standards in the sample collected closest to Little Mountain Creek (Environeering, 2018c).
Fluoride has historically been detected above NC 2L groundwater standards in the former Main Plant in
the vicinity of the On -Site Landfill and the West Fill Area. Fluoride concentration contours in
groundwater at the former Main Plant are presented in the 2012 CMS Phase 3 study (Environeering Inc,
2012b) and are reproduced on Figure 7-1. The distribution of fluoride and cyanide impacts in
groundwater reflect contributions from multiple sources, particularly in the northern area of the Facility
where numerous SWMUs have historically been identified.
EHS Support LLC 44

Hydrogeological Conceptual Site Model Update - Badin Business Park
Geochemistry
MW-28
0.030 J n gIL•
MW-11
4.51 milyr.,4
MW-19
•4.464 mglL
MW-18
•
0,040
MW-109e"-"
14 mg -17
27 0.03 J mglL
• '141W-108
o .. 7 rngIL
•
-1 • MW-i0
0.020J m• i mg/L
52rr L 0 6.4
•
SF-5 BF-2
0.40 Ing/L• O. 2 mg?L
-102
•
.mg!L
Source: Environeering. 2012b. Phase 3 - Engineering Data Collection for the Corrective Measures Study. Badin Works Facility,
Badin, North Carolina. October 31.
Figure 7-1 Fluoride Concentration Contours in Groundwater (2011)
Available cyanide concentrations in groundwater at the ABL reported in the CMS Phase 3 Report only
EHS Support LLC
45

Hydrogeological Conceptual Site Model Update — Badin Business Park
Geochemistry
detected available cyanide in groundwater at piezometers screened within the waste materials at the
ABL (ABL-PZ-16 and ABL-PZ-18), and on the floodplain of Little Mountain Creek (ABL-MW-5)
(Environeering, 2012b). All detected available cyanide concentrations in perimeter groundwater
monitoring wells were below the NC 2L groundwater standard. Subsequent quarterly sampling of the
perimeter wells over four quarters (July 11, 2018; October 30, 2018; January 31, 2019; and April 11,
2019) did not identify available cyanide above the NC 2L standard in any perimeter well (Environeering,
2019).
Total cyanide, which does not have an NC 2L groundwater standard, was detected in MW-4 and MW-5
during all four quarters. As discussed in Section 7.2.2, total cyanide was detected in surface water in the
eastern drainage ditch located on the floodplain of Little Mountain Creek and interpreted to originate
from upwelling groundwater. Total cyanide concentrations were above NCAC Rule 2B fresh surface
water quality standards (NCAC 2B) in all three surface water samples (Environeering, 2018c). However,
total cyanide was not detected above NCAC 2B surface water standards in surface water samples from
Little Mountain Creek.
Available cyanide was detected above NC 2L groundwater standards in the former Main Plant in the
vicinity of the On -Site Landfill and the West Fill Area in 2011 (Environeering, 2012b). Available cyanide
concentration contours in groundwater at the former Main Plant presented in the 2012 CMS Phase 3
study (Environeering Inc, 2012b) are reproduced on Figure 7-2.
EHS Support LLC 46

Hydrogeological Conceptual Site Model Update — Badin Business Park
Geochemistry
®n.site
MW-18
•
<0.0018 mg/L
MW-109 £
0.0210 rtag�L.- ._ MVU-16
•0.0340 rngIL
4 0.22 m
M-11 - .■
0_00Th. mglL MW 23'
1.4 frlg/L 0.011•
,,,,,,51
0.58 m.g, L •
MW5
{ =0018 mglL
PAVV-15.
<0.0018 mgrL•
• hN 14 MW-10
• i0vsii,00i8 *g/L •<O.fl,018 mylL
M 8 MW-29
BF-2 R Ii.
MW-7
<0_o01B mg/L.
<0.0018 mg/L• 0_70 m9/L •< 018 mglL
hi
BF-5,
<0.0018 ,flg/L• •
B F-3
MW-103
.c0.0018 rngli_• • '
Data source: Environeering (2012b)
BF-7
<0.0018 mgll
•
{D_DD1?. mg/L.
MW-105
I' 1 <0.0018 mg1L
•
MVV-102
•
<0.0018 rrtglL
390 rngfL
Grove
•
MW-17
<0.0018 mgiL
MW-108
•
«Q0018 mg/L
Figure 7-2 Available Cyanide Concentration Contours in Groundwater (2011)
As indicated on Figure 7-1, fluoride concentrations decrease by two to three orders of magnitude
between the On -Site Landfill and Badin Lake. A large decrease in concentrations is also observed for
EHS Support LLC
47

Hydrogeological Conceptual Site Model Update — Badin Business Park
Geochemistry
available cyanide (Figure 7-2). The order of magnitude decreases in fluoride and available cyanide
concentrations between source areas and the shore of Badin Lake is consistent with lake water
recharging and mixing with groundwater and lowering COI concentrations and then migrating to the
south (away from the Lake). Note that these contours are drawn lumping together fill and native soil
wells, and are intended to illustrate the hydrogeological and geochemical attenuation mechanisms
operating at the Main Plant.
Overall, lake water and areas of groundwater recharged by precipitation are buffered at low pH values
due to the reaction with atmospheric carbon dioxide, which is common for similarly low alkalinity
waters (Tailing, 2010). In contrast, areas where groundwater is or has been in contact with SPL typically
have high (alkaline) pH values (Randell Environmental Consulting, 2016). pH values of groundwater at
the former Main Plant were measured during the CMS Phase 3 work (Environeering Inc, 2012b) and the
results were contoured and presented on Figure 7-3. Areas where the pH is above approximately 8.0
standard units correspond to where fluoride and available cyanide are highest, in and around the On -
Site Landfill.
EHS Support LLC 48

Hydrogeological Conceptual Site Model Update — Badin Business Park
Geochemistry
Source: Environeering. 2012b. Phase 3 - Engineering Data Collection for the Corrective Measures Study. Badin Works Facility,
Badin, North Carolina. October 31.
Figure 7-3 pH Contours for Groundwater (2011)
EHS Support LLC
49

Hydrogeological Conceptual Site Model Update — Badin Business Park
Geochemistry
To better understand geochemical controls on the orders of magnitude decrease in fluoride
concentrations over small distances at the former Main Plant, the Geochemists' Workbench° (GWB)
software application Act2 was used to demonstrate equilibrium constraints on mineral solubility that
control fluoride concentrations in groundwater (Figure 7-4). Above a pH of about 8 standard units,
calcite3 replaces fluorite as the stable calcium phase, and there is no theoretical limit on fluoride
concentrations in groundwater contacting SPL because calcite does not contain fluoride in its structure
(i.e., calcite = CaCO3). Below a pH of about 8 standard units, calcium is replaced by fluorite as the stable
calcium mineral phase. The mineral fluorite does contain fluoride in its structure (i.e. fluorite = CaF2) ,
and limits the maximum possible fluoride concentration at equilibrium (McMahon et al., 2020). There
are different variables to this model that would result in different fluoride concentrations in equilibrium
with fluorite, but the key point is that at near -neutral pH and with sufficient calcium, maximum fluoride
concentrations (mg/L) in groundwater are limited by mineral solubility.
0
— 1
— 2
— 3
— 7
— 8
— 9
0.75 mgJL
rite
1.3 mgfL
3.2 mgfL
Ca++
Calcite
CaCO3
25°C
—100 2 4 6 8 10 12 14
pH
Notes:
Log a Ca" = logarithm of calcium activity; equivalent to the logarithm of calcium concentration in units of moles per liter at low
dissolved solids.
Blue shading indicates conditions where minerals do not precipitate.
Orange shading indicates conditions where fluoride concentrations are controlled by mineral precipitation.
Black lines indicate expected fluoride concentrations (in milligrams per liter [mg/L]) buffered by fluorite precipitation under a
specific scenario.
Figure 7-4 pH Dependence of Fluoride Mineral Solubility
Based on this model, fluoride concentrations above single digit to low double digit concentrations can
only persist in high pH waters, or acidic waters. Mixing between high pH groundwater with elevated
fluoride and low pH groundwater sourced from Badin Lake would shift pH conditions into the fluorite
3 Calcite is used in this GWB model, but other common carbonate minerals could play a similar role (e.g., siderite, dolomite, or
huntite).
EHS Support LLC 50

Hydrogeological Conceptual Site Model Update — Badin Business Park
Geochemistry
stability range shown on Figure 7-4, leading to fluoride attenuation. Additionally, mixing with lake water
would also lead to lower fluoride concentrations. Consequently, the high fluoride concentration gradient
shown on Figure 7-1 may be explained by geochemical attenuation by mineralization and mixing
between Badin Lake water and former Main Plant groundwater.
Cyanide solubility is also strongly affected by pH. The solubility of cyanide -contaminated soils is highest
at high pH values and lowest at more acidic (lower) pH values (Ghosh et al., 2004). Therefore, mixing
across a pH gradient is also expected to affect available cyanide concentrations through geochemical
attenuation processes.
In addition to mixing and geochemical attenuation lowering cyanide and fluoride concentrations,
groundwater migration from anthropogenic and industrial fill areas in the northern portion of the
former Main Plant is limited by the geologic conditions. The isolated areas of fill materials are generally
underlain or surrounded by native saprolite and residual soil or fill derived from these materials. COIs
are rapidly attenuated in the isolated areas where the fill is in communication with the PWR system
through the geochemical processes described above.
7.2 Surface Water
7.2.1 Badin Lake
During the CMS Phase 3 study (Environeering, 2012b), surface water temperature and conductivity
measurements were made along the shoreline of Badin Lake to identify if groundwater seeps were
present. No groundwater seeps were identified. Surface water samples were then collected from seven
locations along the shoreline of Badin Lake. The sampling location map (Figure 3-20 [Environeering,
2012b]) is provided as Figure 7-5. Grab samples were analyzed for free cyanide, fluoride, TCE, PCBs,
PAHs, and standard field parameters (i.e., pH, specific conductivity, dissolved oxygen, temperature,
turbidity, and ORP). The monitoring was conducted in November 2011 and again in May 2012.
EHS Support LLC 51

Hydrogeological Conceptual Site Model Update — Badin Business Park
Geochemistry
FIGURE 3-20
IN LAKE AT ALCOA BASIN WORKS
SURFACE WATER SAMPLING
LOCATION MAP
Source: Environeering. 2012b. Phase 3 - Engineering Data Collection for the Corrective Measures Study. Badin Works Facility,
Badin, North Carolina. October 31.
Figure 7-5 2011 and 2012 Badin Lake Surface Water Samples
The November 2011 results identified fluoride in the laboratory method blank, and samples from this
period were noted with a "B" qualifier by the lab. It is believed that the reported value is the result of a
laboratory artifact; it also noted that the reported values of 0.090 to 0.13 mg/L are typical of
background surface and groundwater fluoride concentrations in the United States (McMahon et al.,
2020). Fluoride was not detected in the subsequent sampling event in May 2012. Free cyanide, TCE,
PAHs, and PCBs were not detected in the November 2011 and May 2012 sampling events. The Badin
Lake surface water analytical results are provided in the CMS Phase 3 report (Table 3-6 of Environeering,
2012b).
EHS Support LLC 52

Hydrogeological Conceptual Site Model Update — Badin Business Park
Geochemistry
The surface water results provide an additional line of evidence that Badin Lake is a losing water body
that is contributing to groundwater recharge beneath the Facility.
7.2.2 Little Mountain Creek
From January 6, 1997 through January 4, 2001, monthly surface water samples were collected from
Little Mountain Creek at points upstream and downstream of the ABL and analyzed for total cyanide,
free cyanide, and fluoride. Results are provided in the 2001 RFI (MFG, 2001). Total cyanide was below
the detection limit in all upstream samples and exceeded NC 02B surface water quality standards nine
times in the downstream samples. Available cyanide exceeded standards two times in the upstream
samples and three times in the downstream samples. Fluoride was below standards in all samples and
exceeded standards three times in the downstream samples. Of the most recent samples from this
dataset (January 2000 through January 2001), only total cyanide exceeded standards in a single sampling
event.
During the 2001 RFI, no COIs were detected at concentrations exceeding applicable human health
screening values in Little Mountain Creek (MFG Inc, 2001). During the CMS Phase 3 study
(Environeering, 2012b), a surface water sample was collected from Little Mountain Creek in November
2011 and analyzed for available cyanide, fluoride, TCE, PAHs, and PCBs. Similar to the Badin Lake surface
water sample, fluoride was detected in the laboratory method blank sample and the concentration was
attributed to a laboratory artifact. Consistent with the RFI (MFG Inc, 2001), available cyanide, TCE, PAHs,
and PCBs were not detected in the November 2011 sample from Little Mountain Creek.
To address the January 23, 2017 NCDEQ request for additional investigation downgradient of the ABL
(NCDEQ, 2017), and to assess the variation on constituent levels in Little Mountain Creek as intended by
the instream monitoring study requirements of the September 29, 2017 Final NPDES Permit Renewal
(Condition A. [8]), five surface water samples were collected from Little Mountain Creek (Environeering,
2018c). Fluoride was below NCAC 2B standards in all samples, and total cyanide was not detected in any
sample. The sum of the detected PCB congener concentrations was reported above the NCAC 2B criteria
of one part per trillion in one location; however, congeners were not detected in the duplicate sample.
One sample and the associated duplicate sample contained concentrations of total PAHs exceeding
NCAC 2B standards. As part of the same effort, two sediment samples were collected from Little
Mountain Creek and analyzed for PCBs and PAHs; results did not exceed the applicable screening criteria
(Environeering, 2018c). Subsequent confirmation sampling of Little Mountain Creek surface water and
analysis for PCB congeners and PAHs from the location where the detections occurred did not identify
any constituents above the primary or duplicate sample that was collected (Badin Business Park LLC,
2019).
The most recent sampling events suggest that conditions in Little Mountain Creek have improved, and
current conditions will be assessed during the forthcoming baseline ecological risk evaluation study.
Notably, operation of the ABL corrective measures have likely improved conditions since the 2018
sampling, as described in Section 9.1.
EHS Support LLC 53

Hydrogeological Conceptual Site Model Update — Badin Business Park
Stormwater System
8 Stormwater System
Periodic exceedances of fluoride above the NPDES permitted levels have occurred at outfall 005.
Subsequent studies have identified that impacted groundwater was entering the storm sewer system
with a number of potential sources, including residuals in soils and the PWR and flux from the West Fill
Area, identified as contributing to the detections of fluoride at Outfall 005. The layout of the storm
system is shown on Figure 8-1.
Stormwater pipes indicated with blue lines.
Shallow stormwater system indicated with orange lines.
Manholes indicated with red dots and labeled with number designations.
Figure 8-1 Stormwater System
The interaction of the storm sewer system with groundwater at the former Main Plant was assessed in
2006 (BHE Environmental Inc., 2006). In the study, measured groundwater elevations were compared to
storm sewer pipe invert elevations to identify where the groundwater potential was sufficient to enter
the storm sewer system. Since groundwater at the former Main Plant is confined within PWR, the
analysis was repeated to assess where the stormwater system intersects the PWR; results are provided
in Section 8.2. Further efforts to locate where stormwater is entering the stormwater system included a
EHS Support LLC
54

Hydrogeological Conceptual Site Model Update — Badin Business Park
Stormwater System
camera study in September 2015 to visually identify areas where groundwater is infiltrating the
stormwater system that feeds into Outfall 005.
Subsequent efforts focused on defining groundwater fluoride or cyanide concentrations in the West Fill
and downgradient areas, along with track down studies of fluoride and cyanide concentrations in the
stormwater system. Mitigation initiatives included upgrades to the stormwater system through
construction of a shallow piping system as part of a special order by consent dated July 2, 2018.
Additionally, portions of the aged stormwater pipe were grouted in 2019, the pipe was isolated with
brick headers, and a slurry wall was installed to mitigate groundwater infiltration to the storm system.
An electrical conductivity survey was subsequently performed to identify the effects of mitigation
measures on groundwater migration.
This section describes the concentrations identified at Outfall 005 that are driving the stormwater
assessment activities and the results of the measures taken. This section also provides an updated
conceptualization of groundwater interaction with the stormwater conveyance system, which has been
informed by the recent hydrogeologic data and conceptualization provided in this report.
8.1 Outfall 005
Concentrations of fluoride at Outfall 005 and manhole (MH) 2.050 (locations shown on Figure 8-1) were
measured over several days in December 2019 (Figure 8-2). On December 11, 2019, about 0.5
cumulative inches of rain fell. On December 13, 2019, about 1.75 cumulative inches of rain fell. Fluoride
concentrations were lower on December 13 than on December 11 in both locations, but the
concentration decreased more in Outfall 005 than in MH 2.050. MH 2.050 was also found to have a
more consistent flow rate during the rain events than Outfall 005. Therefore, the high -fluoride water
from MH 2.050 was diluted more at Outfall 005 during the stronger rain event. Based on this data, it was
concluded that the source of fluoride at Outfall 005 is the baseflow of groundwater in the system and
not mobilization of fluoride from other sources by precipitation. Furthermore, removing high -fluoride
water from MH 2.050 or blending water with a clean water source (from stormwater, groundwater, or
some other source) were identified as possible options for achieving compliance at Outfall 005.
EHS Support LLC 55

Hydrogeological Conceptual Site Model Update — Badin Business Park
Stormwater System
12/11/19
12/13/19
Lower Rainfall Data High Rainfall Data
Manhole 2.050 Outfall 005
Data estimated from Badin Business Park Outfall 005 Compliance
Management Update Presentation, January 24, 2020
mg/L = milligrams per liter
Figure 8-2 Fluoride Concentrations Measured at Outfall 005 and MH 2.050 During December
2019 Sampling Event
Between March 2010 and January 2020, the fluoride concentration in Outfall 005 was below the
compliance level of 1.8 mg/L in 10 of the 142 months when data was reported (Figure 8-3).
Concentrations greater than 5 mg/L were observed before 2016, but since 2018 (area highlighted by the
box in Figure 8-3), concentrations have consistently been below 3.5 mg/L (Figure 8-3). Notably,
concentrations shown on Figure 8-3 decreased significantly following measures in 2019 to plug and
inhibit stormwater movement northeast of the former potlines and downflow of MH 2.600. Note, the
recent period of record indicated on Figure 8-3 is provided in more detail on Figure 8-4.
EHS Support LLC 56

Hydrogeological Conceptual Site Model Update — Badin Business Park
Stormwater System
20
J
CD
N
Q
u 10
0
00
.00
--0_-0
0
0
0
0
0 0 0 0
0 0
p ° o 0
mobni�p 0 0 °m 0
� vBpV Q000000 OJCLOO
o�
°% o 0
1.8 mg/L Compliance Level
0
0
c8
°
2011
mg/L = milligrams per liter
3-
0
2013
2015 2017
Month
2019
2021
Red circles: Reported average fluoride concentration
Black circles: Reported maximum fluoride concentration
Black box: Recent period of record
Figure 8-3 Fluoride Compliance at Outfall 005
0 0
0 0 0
0 0
° 0
0 0
0 0
0 0
° 0
0
0 0
0
1.8 mg/L Compliance Level
O
0
0 0
0 0
°
0
0 0 0
0 0
0--e-------0-
0
O
0
O °
0
0
8 0 0 0
O 0
0
8
07-2018
mg/L = milligrams per liter
Figure 8-4
04-2019
01-2020
Month
10-2020
07-2021
04-2022
Red circles: Reported average fluoride concentration
Black circles: Reported maximum fluoride concentration
Fluoride Compliance 2018 Through January 2022 at Outfall 005
EHS Support LLC 57

Hydrogeological Conceptual Site Model Update — Badin Business Park
Stormwater System
8.2 Stormwater System — Groundwater Interaction
During excavation and plugging activities southwest of MH 2.600 in 2019, it was observed that pipe
bedding may not have been used during the original installation of the stormwater infrastructure and
that native fill materials were likely used instead in many locations. Consequently, the fill material
surrounding the pipe does not likely provide a substantial preferential flow pathway for groundwater,
which is supported by the absence of bends in groundwater equipotential lines around the stormwater
infrastructure.
Based on boring logs for wells MW-103 and MW-220 in the former Main Plant, groundwater was
encountered within PWR or rock and was confined beneath the approximately 10- to 12-foot-thick
veneer of clayey fill. Subsequent water levels measured in the wells were above the PWR/Rock interface
with overlying fill.
To better identify where groundwater is entering the stormwater system, locations where the
stormwater pipe intersects PWR were assessed. Assessing the interface provides a more accurate
measure of where groundwater enters the stormwater system than using the groundwater elevation,
given that groundwater is confined and located within the PWR or rock and may appear artificially high.
The depth to PWR shown on Figure 5-5 was converted to the PWR elevation and compared to the
stormwater pipe invert elevations. The result is shown on Figure 8-5 and corresponds to areas where
there are observed increases in fluoride concentrations within the storm sewer.
EHS Support LLC 58

Hydrogeological Conceptual Site Model Update — Badin Business Park
Stormwater System
LEG EN D
- Stormwater Pipes
• 5tormwa ter Manholes
o NPDES Outfalls
Storm Sewer Invert Intercept PWR
Utility Invert Elevations
feet NAVDS8
<=510
1.1 510-513
MI 513 - 515
515 - 516
516 - 517
517 - 518
518 - 519
Q 519 - 522
522 - 533
>533
I I
I I
I I
I I
wood
t`i17R-3nylS
agGii
6.200
!, r5
gimp
Pipe
6.92E
2 200. 2.201'
1.111
11.330 1
2.120 2'34.
2110
6-oa0 2.oso
tFail 00S
C
8.525 INLET MN
8.300 INLET MH
11113FALL AT LANE
Grove
0ulfall 011 and 012
e.403.IN1 FT Mil
8.500INLET MH
¶T.200 INLET MH
a. Da) INLET MH
6.200NLEr MH' OIL SEPARATOR
Y "' PL•_F MH W1E 7.OINiET 3t001NLE1 MH
9.000INLLi MH
2:730
2.610
2.611 5 PIPE W EST
f /rr731
�
•43500 r MP
)''"`33WEFtyEHTSAMPLE MHO
0040IOW METFFINr550-E
4.000
1.600 3_200
1.521
4.030'
CC* PCB
eao
gem ecm
207,
WEE FLOW ME TERN.
t
2
NAVD88 = North American Vertical Datum 1988
NPDES = National Pollutant Discharge Elimination System
Figure 8-5 PWR Elevation Compared to Storm and Sanitary Pipe Invert Elevations
Figure 8-5 shows locations where stormwater infrastructure intercepts PWR. Three main areas are
identified:
• Immediately downgradient of the West Fill area between MH 2.700 and MH 2.510
• Between MH 2.400 and MH 2.210
• Between MH 2.000 and MH 2.050
EHS Support LLC 59

Hydrogeological Conceptual Site Model Update — Badin Business Park
Stormwater System
Whereas the stormwater pipe intersects PWR in the section of pipe between MH 6.020 and MH 6.921,
fluoride -impacted groundwater is not believed to be entering the system in this section of pipe due to
fluoride concentrations measured during stormwater track down studies (Section 8.3).
8.3 Track Down Analytical Data
Grab water samples were collected from MHs along the stormwater conveyance that feeds into Outfall
005 at five different times in 2019' to identify the times and locations where fluoride and cyanide were
entering the stormwater piping. Sampling locations and the range of analytical results are shown on
Figure 8-6. Note that a concentration of 24.9 mg/L fluoride was measured in MH 2.200 in September
2019, whereas all previous samples in 2019 and subsequent samples in 2021 were within a range of 2.7
to 4.7 mg/L. Given that no groundwater or other source within the stormwater system has a similarly
high reported concentration, this value is considered suspect. Also, in September 2019, the pipe was dry
upstream at MH 2.510 and dry downstream at MH 2.100 and MH 2.000, suggesting any water in the
intervening space was stagnant and arrived from an upstream location (such as from between MH 2.400
and MH 2.210) at an earlier time and may have concentrated due to evaporation.
950 900t
2.020
2.9m2s mgh
0,0226t12 0,017 046 C
6.000
1910 2.7 mglLF
003210 011 marl CN
0,7617
New LS
O,CC<ro C... rtylL CN
2 2'0
10044 ioo ss ��W�crr- ,..210:
2200
3020 2d9,1,
=00023 to 0. 16 mg0.CN
L
2. 10
2 to 8.2 mgILF
0.13100.4 mg(LC
CN = cyanide
F = fluoride
mg/L = milligrams per liter
Figure 8-6 2019 Fluoride and Cyanide Track Down Study Results
In March and April 2021, grab samples were again collected from MHs along the stormwater
conveyance that feed into Outfall 005, from groundwater monitoring wells located in the flat area of the
February 7, March 13, March 27, May 6, and September 19.
EHS Support LLC
60

Hydrogeological Conceptual Site Model Update — Badin Business Park
Stormwater System
former Main Plant (FO-02, BF-5, MW-31, and MW-103) and monitoring wells in the West Fill area (MW-
29, MW-33, MW-35, MW-37, MW-39, and MW-46) using low -flow techniques. Grab samples were also
collected from five temporary wells (TW001 through TW005) installed to intercept groundwater, a seep
that developed at the base of the embankment east of the West Fill area, and two sumps installed to
manage the water (North Sump and South Sump). Sampling locations and analytical results are shown
on Figure 8-7. Also shown on Figure 8-7 are analytical results for groundwater samples collected and
analyzed in 2022 (Section 3).
MW F0-02003012020
0.11 mg/ F
m00079nglLCN
MW-103 (303.020
a0078
.00078 mg1L CN
BOW (6117/202.2J
.0040 np2 F
<0.0020Og4.
0303(811712022)
.0.0040 mg/L F
<0.0020 mgil C
2100 2.1 r1g1"•- 1
2210 z
6.000 27 mgLF ]]1]mAOO(3/1712021)9LC 26mg2F 23mat F
0.37m90.F �..e0092 mgiLCll
^� �0 OO60 mg�L Cut--_0005]mgIL CN
0dfi9 m.ILC v '
u0e. 005(30172021)
2.1 mg1LF
0.028 mg1L CN
0.04610&L CN-D.02C7=n p•L CN
MW.104{313012020.
1 6 mg/L F
m.00079 mg1L CN
8302 (811712022)
.0 0040 mgll F
N.0020 m4R C
13.300 (8(17/2022)
<0.040 'MI F
02.0020 m0h C
MN0.33(1115F2021)
44 mghF
0,421CN
2.516 (31162021
1 mgh-F
0.018 mg/LCN
TWO. (M1312021
CS mot F
0076 mg1L CN
7WOm(411312021
8-S mar
0.092 oral CN
South Sump (31101202
43 mg1LF
007 moll_ CN
2300 (81112022)
0.042 np0L F
W.0020 mg4 C
MW-216 (6/1312022
=.0040 mg& F
.0--0020 MA CN
MWJ919222021
..040 mgll. F
.0 0020 mgh CN
14W-219(0/1.02)
0075 mg,F
.0.0020 mg, CN
W-77 (32212021
00 mg/ F
LCN
MW 51!OIL 21
38 mgIL 00 F
2.9 mg. CN
MW-29(3/1512021
13 mg'LF
12 mglL CN
MW-30(31222021)
fi3 rag1L F
0066 mg1L CN
-Wes1 FM Area Seep (3l1 &2021)
TW005(41101202'),� 11 m711.00
1.2r044_F 0.047 mg/CN
W.0625, 0001 2114128ump(311612021
mgILF
0.032 mgIL CN
CN = cyanide
F = fluoride
mg/L = milligrams per liter
Figure 8-7 2021 Fluoride and Cyanide Track Down Study Results
Samples were collected using clean disposable sampling equipment and placed into laboratory -provided
sample bottles. Samples were collected under chain of custody protocols and submitted to North
Carolina -certified analytical laboratory for analysis (Eurofins of Savannah, Georgia). Samples were
analyzed for fluoride by USEPA Method 300.0 and total cyanide by Method 9012B. Laboratory analytical
results are provided in Attachment G.
The following summarizes the spatial distribution of analytical results:
• Analytical results identify groundwater samples collected upgradient (west) of the West Fill Area
as below the method detection limit for fluoride and cyanide (B300 through B303, B305, MW-
218, and MW-39). Fluoride was detected at low levels and below the NC 2L groundwater
standard in MW-219, and total cyanide was not detected.
EHS Support LLC
61

Hydrogeological Conceptual Site Model Update — Badin Business Park
Stormwater System
• Samples from monitoring wells installed in or immediately downgradient (east) of waste
material at the West Fill Area had groundwater fluoride concentrations of 6.3 to 100 mg/L and
cyanide of 0.21 to 12 mg/L.
• At the base of the embankment adjacent to the West Fill Area, groundwater fluoride
concentrations ranged from 1.2 mg/L to 11 mg/L, and total cyanide ranged from below the
detection limit to 0.092 mg/L (TW001 through TW005, south sump, north sump, West Fill area
seep, and BF-5).
• For groundwater further downgradient, total cyanide was below the detection limit in all
groundwater samples and fluoride was below the NC 2L standard in all samples (FO-02, BF-5,
MW-31, and MW-103).
• Within the stormwater conveyance system, fluoride and total cyanide concentrations were
lower than groundwater at the base of the West Fill Area embankment but higher than
groundwater at FO-02, BF-5, MW-31, and MW-103. There is a notable increase in fluoride
between MH 2.400 and MH 2.210 in 2019 and between MH 2.510 and MH 2.210 in 2021. This
stretch of the stormwater system coincides with an area where the stormwater system
intersects PWR (Figure 8-5).
Track down analytical results, along with the identification of where the stormwater conveyance
intercepts PWR, are consistent with the camera study, which identified groundwater infiltrating the pipe
downstream of MH 2.400 and standing water in the pipe between MH 2.320 and MH 2.330.
To summarize, groundwater fluoride and cyanide concentrations increase from non -detect to elevated
concentrations as groundwater moves past the West Fill Area. This is possible because the West Fill Area
was developed in a historical ravine. Saprolite is only a few inches thick (MW-34, MW-37, MW-39) or
absent (MW-38) at the base of the ravine and was likely eroded by natural processes prior to plant
development in this location or was possibly excavated during Facility development and operations. The
CMS Phase 3 Report (Environeering, 2012b) describes this ravine as being filled during plant expansion
and modernization with native soils and incidental amounts of plant process remnants. Groundwater
confined within the PWR moves vertically upward into overlying fill material where native soils were
naturally eroded.
The geologic setting provides a mechanism for the formation of a seep at the base of the West Fill
embankment and for impacted groundwater to mix with cleaner groundwater on the flat area of the
former Main Plant where concentrations decrease. Impacted groundwater enters the stormwater
system in this general area (northeast of MH 2.510). This is the general area where the pipe was
cemented and plugged in 2019, which led to improvements in fluoride concentrations observed at
Outfall 005. Increases in fluoride in stormwater within the conveyance system indicate impacted
groundwater is entering the system between MH 2.510 and MH 2.210 in an area where the pipe
intersects groundwater within PWR. This overall conceptualization is summarized on Figure 8-8.
EHS Support LLC 62

Hydrogeological Conceptual Site Model Update — Badin Business Park
Stormwater System
Legend:
F = fluoride
mg/L = milligrams per liter
ND = non -detect
PWR = partially weathered rock
TCN = total cyanide
Temp. = temporary
Groundwater flow
on hillside is
topographically
driven within
PWR
Groundwater
confined
within PWR by
overlying saprolite
Manhole 2.400
F=2.3 to 2 8 mg/L
Manhole 2.200 Tcn=0.005I to U. 13 met
F=2.3 to 24.9 mg/L
TCN O0052 to 0.18 mgfL
Manhole 2.050
F=2. 1 to 2.6 mg/L
TCN=0,1:1125 to 0 028 mg/L
Little
Mountain
Creek
Flood Plain
Groundwater
recharged
by precipitation
Manhole 2.510
F. Dry to 1.1 mei_
TCNDry to 0. 046 mg/L
Storm
Sewer to
Outfall 005
Saprolite and soil
eroded in valley
(now filled)
Groundwater
encounters fill and waste
where saprolite is thin
or completely absent
(e.g. MW-38, MW-39)
Temp. wells
f=1. 2 tb 6.8 mgeL
TCN=a0.002 to 0.092 rrg/L
Out -Fall 005
(2018 to 2021)
F-ND to 3.5 mg/L
Groundwater enters
storm sewer
pipe joints where invert
intersects groundwater
Figure 8-8 Conceptual Summary of Impacts Entering the Outfall 005 Stormwater Conveyance
System
EHS Support LLC 63

Hydrogeological Conceptual Site Model Update — Badin Business Park
ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures
9 ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures
The geology in the ABL area is generally similar to the former Main Plant and consists of a PWR
groundwater flow system that is recharged from the direction of the former Main Plant and from the
slope to the west. Before waste was placed, there was a bifurcated valley underlain by several feet of
saprolite soils, followed by PWR, and fractured rock based on boring logs and cross sections from the RFI
and CMS Phase 3 reports (MFG Inc, 2011 and Environeering, 2012b, respectively). Historical aerial
photos do not indicate any disturbance of this surface before placing municipal refuse, process material,
and native soils, and subsequent capping, which raised the ground surface from 13 to 42 feet
(Environeering, 2012b). A geologic cross section of the ABL from the 2001 RFI (MFG Inc, 2001) is
provided as Figure 9-1.
LEGEND
Borehole
Monitoring Well Screen/
Well Production Zone
Notes:
1. Red wells are no longer present.
Northeast
A
Maximum/Minimum groundwater
(CMS Phase 3, 2011/2012) a N
N N
FII ■ g
Residual Soil ■ £
8
Saprolite ■
Partially Weathered Rock M
Fractured Rock ■ G
N d
w
0
Ground Surface
1913
I I I
Ground Surface
Present Day o
ry
1009
Distance (feet)
Figure 9-1 ABL Cross -Section
Southwest
A'
2000
is
Partially Weathered Rock`
Vertical
Exaggeration =10x
The ABL was rough graded in 1980 using available on -site soils and was seeded with grass. In October
1997, the ABL surface was regraded to control run-off and establish a slope suitable for mowing. A new
cover system was established over the landfill area comprising 12 inches of silty clay soil, compacted to
95 percent relative density, overlain by a 6-inch vegetative layer consisting of silty clay soil combined
with lime and fertilizer. Run-on from high areas was managed by installing both lined and unlined
ditches along the flanks of the ABL that are keyed into saprolitic soils and discharge clean water (water
coming onto the Facility) to the flood plain of Little Mountain Creek. These ditches also receive runoff
from adjacent slopes, which include two electrical substations. A subsequent investigation identified
waste beneath an adjacent Alcoa Power and Generating, Inc. high voltage electrical substation
(Environeering, 2008).
EHS Support LLC
64

Hydrogeological Conceptual Site Model Update — Badin Business Park
ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures
Geology at the toe of the ABL differs on the floodplain of Little Mountain Creek, where fluvial processes
eroded and thinned residual soils and saprolite and deposited alluvial sediments on the resulting
surface. Alluvial sediments were historically identified in the boring logs for ABL-MW-3, ABL-MW-4, ABL-
MW-5, and ABL-PZ-3S, and in the soil profile at PZ18RD during drilling in 2022. The alluvial soils consist
of organic silt and clay with pebble to cobble -sized rock fragments and roots in places. The alluvial soils
are generally described as wet to saturated and underlain by residual soil and hard, dry saprolite. No
wells are exclusively screened in alluvial soils (Table 6-1), however, given the silty composition and
observed saturation likely have higher hydraulic conductivity than saprolite and residual soil.
Sources of water to the alluvial soils are precipitation and runoff from the ABL cap and slopes on the
eastern and western sides of the floodplain, and groundwater. Overall, groundwater is confined in PWR
beneath saprolite based on periodic flowing artesian conditions in ABL-MW-3 and an upward vertical
groundwater gradient beneath the floodplain (Section 6.3). The strong upward vertical groundwater
gradient provides a source of recharge to the floodplain and associated wetland areas that exist within
this floodplain. Historically, leachate exited to the floodplain, however, this source has been eliminated
through construction of the leachate collection system and subsequent improvements as described in
Section 9.1. However, it cannot be ruled out that residual contamination from this historical condition
persists, and this possibility will be assessed during investigation activities planned for 2023 and the
HCSM will be updated accordingly.
Little Mountain Creek is incised into the PWR with bedrock observed within the creek both upstream
and downstream of the Facility. Groundwater within the PWR (from both sides) discharges to the creek
with baseflow maintained by PWR groundwater discharges throughout the catchment. The connection
between PWR and the creek was documented on the log for ABL-PZ3I, which noted bubbles rising in the
creek 50 feet upstream and downstream of the drilling location while drilling in to the PWR with an air
hammer rig.
Groundwater elevations and concentrations were assessed in piezometers installed within the fill
material (PZ-13 through PZ-19) during the Phase 3 CMS Study (Environeering, 2012b). At this time the
two most northerly piezometers were dry (PZ-13 and PZ-14), whereas the more southerly piezometers
(PZ-15 through PZ-19) contained water. Of these piezometers, available cyanide was detected in PZ-16
and PZ-18 although concentrations were below NC 2L standards. Fluoride in groundwater was above
standards in PZ-15 through PZ-19. These results indicate that at that time, waste was saturated in the
lower portion of the landfill below PZ-15 through PZ-19. Time series data are not presently available to
identify if the water in these is stagnant and isolated, or if water levels were affected by construction of
the collection trench at the toe of the ABL.
As shown in Figure 9-1, the waste material within the ABL is enveloped within a combination of saprolite
and native (silt/clay) fill materials that have low permeability (consistent with the hydraulic conductivity
data described for the Main Plant Area). Recharge through the landfill cap is limited, and based on the
low permeability of the saprolite and fill, limited to no lateral migration will occur into the landfill waste
within the shallow fill and saprolite materials. The only areas of groundwater in contact with the waste
materials occurs at the toe of the landfill (as shown below) due to the vertical migration of groundwater
from the PWR through the saprolite and into the fill. The low permeability of the saprolite limits the
magnitude of this vertical flux and the resulting water volumes recovered by the downgradient
groundwater recovery trenches (note these are not shown on the Figure 9-1 cross-section).
EHS Support LLC 65

Hydrogeological Conceptual Site Model Update — Badin Business Park
ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures
9.1 Efficacy of ABL Corrective Measures
Corrective measures undertaken at the toe of the ABL are described in Section 2.5.2. As described in
Section 2.5.2, the motivation for the design of a slurry wall, capture trench, and subsequent
improvements (Figure 9-2) was to address the seeps that developed at the base of the ABL following the
completion of the interim measures, which consisted of installing an improved cover system with lateral
drains (Environeering, 2015). A portion of the seep water was believed to originate upslope of the ABL
due to precipitation infiltration and a portion from recharge from bedrock through the base of the ABL.
Historical analytical data suggests the seeps emanate from water that passes through the ABL materials
or makes contact with residual impacts in the floodplain of Little Mountain Creek that arrived before the
cover system improvements were implemented. Section 9.2 describes the efficacy of the remediation
system.
Benton ite 5I u rry;Wa I
HDPE = high -density polyethylene
PVC = polyvinyl chloride
Figure 9-2 ABL Slurry Wall and Collection Trench Configuration
9.2 Recovery Volumes
Recovery volumes from the ABL collection trench are monitored daily by a flow totalizer. The number of
gallons per day that were captured and conveyed to the municipal treatment system through the force
main is compared to the daily precipitation measured at the National Oceanic and Atmospheric
Administration weather station located in Albemarle, North Carolina (Station USC00310090) (Figure
9-3). The results show that initially low recovery volumes in the collection trench were significantly
improved following the 2017 modification, which rapidly drained groundwater that had accumulated
EHS Support LLC
66

Hydrogeological Conceptual Site Model Update — Badin Business Park
ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures
behind the slurry wall. Initially, over 30,000 gallons were recovered per day; that rapidly decreased to
under 5,000 gallons recovered per day over the remainder of 2017.
70,000
60,000
O 50,000
V
OJ
• 40,000
�, 30,000
O 20,000
L7
10,000
0
4k,
IINI I
CO In In 0
rl l i rl N
O O O 0
N N N N
d• L_ry rn rn
Recovery Trench Precipitation
N
r▪ l
r�l
rl
N
N
r▪ l
Figure 9-3 ABL Collection Trench Recovery Volumes Compared to Daily Precipitation Totals
Since 2018, the daily recovery volumes from the collection trench have varied on the order of months by
tens of thousands of gallons. There is a correlation with individual precipitation events (Figure 9-3), and
hurricane events in 2018 correlate increased recovery as do precipitation events in 2019. Recovery
spikes in 2019 that are not associated with precipitation events are tied to system modifications to the
collection system operation. A much better visual correlation is apparent when the recovery data is
compared to a 30-day running average of precipitation (Figure 9-4). The result suggests that the
increased recovery volumes are not associated with direct precipitation runoff from the landfill cap or
local precipitation accumulation on the Little Mountain Floodplain. The good match with the 30-day
running total is indicative of groundwater capture by the collection trench; a time -averaged approach is
representative of water storage and seepage that occurs in a groundwater system as opposed to the
instantaneous effects expected for the water sourced from sheet flow runoff.
EHS Support LLC 67

Hydrogeological Conceptual Site Model Update — Badin Business Park
ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures
70,000 -
60,000 --43
'g 50,000 -
0
u
• 40,000 -
ro
▪ 30,000 -
0.
0 20,000 -
173
(.9
10,000 -
io n N co co rn rn 0
0 0 0 0 0 0 0 0
WD n If) to d▪ " Ln m m
.,-1▪ Ln ti Lf1 ti ui ti in
ti ti N ti
Collection Trench Precipitation
0 ri
N N
0 0
.l N
- 0.6
0.5
m
nq
ro v
0.4 a)s
u
c
CIA
c c
0.3 .E 0
c
ct .3_
0.2 rya 'v
o a
- 0.1
0
Figure 9-4 ABL Collection Trench Recovery Volumes Compared to a 30-Day Running Average of
Precipitation Totals
To summarize, recovery volume data support the following conclusions:
1. The slurry wall is effective for minimizing groundwater mass flux to the floodplain of Little
Mountain Creek as groundwater backed up behind it.
2. The 2017 modifications to the collection trench resulted in the effective capture of
groundwater, as indicated by an initial rapid decrease in recovery volumes when water stored
behind the slurry wall was drained.
3. The collection trench continues to operate as designed by capturing significant volumes of
groundwater.
9.3 Electrical Conductivity Surveys
Delineation of the extent of elevated constituent levels in the area downgradient of the ABL and the
effectiveness of the collection trench system is monitored using electromagnetic (EM) surveys to
measure the electrical conductance in soil pore water. The method allows for correlation between
inorganic water chemistry data and data from electrical -based geophysical methods (Benson et al,
1985). The method can also be used for time -series measurements to evaluate concentration trends
(Benson et al., 1985).
An EM geophysical study was performed quarterly for one year, starting in the second quarter of 2018,
to evaluate the potential for seasonal variability in soil pore water conductivity. The reference baseline
surveys are compared to the subsequent geophysical surveys. Annual surveys are conducted in early fall,
and the results are communicated to NCDEQ; the most recent round of data for 2022 was submitted to
NCDEQ in December 2022.
EHS Support LLC 68

Hydrogeological Conceptual Site Model Update — Badin Business Park
ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures
Results of the initial geophysical survey conducted in the third quarter of 2018 are shown on Figure 9-5.
Areas of low apparent conductivity (less than 50 milliSiemens per meter [mS/m]) correlate with
groundwater samples collected in October 2018, where fluoride concentrations ranged from 0.078 J to
0.23 mg/L (ABL-MW-3 through ABL-MW-5; "J" qualifier indicates a concentration between the method
detection and reporting limits), below the NC 2L standards (Environeering Inc., 2019). Available cyanide
in the samples from the same wells ranged from 0.00031 J mg/L to 0.0025 mg/L, which is also below the
NC 2L standard.
Contemporary data for groundwater samples from high apparent conductivity areas is not available;
monitoring wells ABL-MW-8 through ABL-MW-13 were abandoned during construction of the collection
trench and groundwater concentration data has not previously been reported. However, groundwater
concentrations for piezometers PZ-15 through PZ-17 are available from the Screening Level Ecological
Risk Assessment Report for the ABL (CEC, 2021b). PZ-15 through PZ-17 are located within the footprint
of the landfill, and between August 2011 and August 2012 fluoride concentrations ranged from 8.9 to 77
mg/L (except one non -detect concentration at PZ-16 in May 2012). Over the same period, available
cyanide ranged from not detected to 0.014 mg/L. These results indicate that apparent conductivity
provides a useful measure of the spatial extent of impacted groundwater. It is anticipated that the suites
of analyses collected during the Baseline Ecological Risk Assessment process will enable improved
calibration of the apparent conductivity data.
A comparison of temporal apparent conductivity trends is provided through the comparison of fall 2018
with fall 2022 apparent conductivity results (Figure 9-5 and Figure 9-6, respectively). Results show a
notable decrease in the extent of apparent conductivity above 50 mS/m, which indicates the collection
trench is effective.
3" Wide Soil Bentonite Slurry
HDPE = high -density polyethylene
PVC = polyvinyl chloride
Figure 9-5 Initial (Fall 2018) Electromagnetic Conductivity Survey Results
EHS Support LLC 69

Hydrogeological Conceptual Site Model Update — Badin Business Park
ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures
Figure 9-6 Fall 2022 Electromagnetic Conductivity Survey Results
9.4 Source of Constituents of Interest
The RFI results showed no COIs were present in the soil adjacent to the ABL at concentrations exceeding
the conservative risk -based screening values; therefore, soils surrounding the ABL do not pose an
unacceptable risk to potential current or reasonably anticipated future receptors. However, the RFI did
show that cyanide in groundwater exceeded the screening value in a single well downgradient of the
ABL. A screening level risk assessment was conducted on Little Mountain Creek, the first receptor for
groundwater downgradient of the ABL. No COIs were present at concentrations exceeding applicable
human health screening values. However, the unit was retained in the corrective action process because
of the one detection of total cyanide in groundwater above the regulatory standard (Environeering,
2012a).
In 2018, surface water and sediment samples were collected from Little Mountain Creek and the eastern
drainage ditch, a feature located on the eastern side of the Little Mountain Creek floodplain that is
keyed into alluvium and receives both artesian and lateral runoff (Environeering, 2018c). Fluoride and
total cyanide were below regulatory standards in the surface water from Little Mountain Creek but were
detected above criteria in surface water from the eastern drainage ditch. Fluoride and cyanide were
below criteria in the eastern drainage ditch sample closest to Little Mountain Creek. PAHs were above
criteria in a single sample from the central ditch, and above criteria in a single Little Mountain Creek
surface water sample from across Highway 740, which was attributed to an off -site source. PCB
congener concentrations were above criteria in a single surface water sample from Little Mountain
Creek but were not detected in the duplicate sample. PCB congener concentrations were above criteria
in sediment samples from the middle and lower ditch sediment samples. It is documented that there
EHS Support LLC 70

Hydrogeological Conceptual Site Model Update — Badin Business Park
ABL-Specific Hydrogeology and Efficacy of ABL Corrective Measures
was a fire due to a bushing failure at the adjacent substation on the opposite side of the eastern ditch
from the ABL and that the substation is at a higher elevation than the eastern ditch and is in the
upgradient direction of surface runoff.
Surface water samples collected in September 2020 confirmed that fluoride and total cyanide were
below regulatory standards in the surface water of Little Mountain Creek and that fluoride and total
cyanide were above criteria in surface water samples from the eastern drainage ditch feature located on
the eastern side of the Little Mountain Creek floodplain (CEC, 2021a).
Potential sources for COIs on the floodplain of Little Mountain Creek include waste beneath the adjacent
substation that was identified during drilling in 2007 (Environeering, 2008), historical releases from one
of the two adjacent electrical substations, or residual impacts that entered the floodplain prior to
finishing the ABL cap and collection trench system. Additional data to be collected from supplemental
sampling planned for 2023 in this area is expected to provide additional constraints on the source of
impacts. Elements of this HCSM document will be updated as new sampling data becomes available.
EHS Support LLC 71

Hydrogeological Conceptual Site Model Update — Badin Business Park
Conclusions
10 Conclusions
The Facility differs from typical Appalachian Piedmont hydrogeological systems (Figure 1-1) because of
extensive excavation, placement of fill, and leveling of topography. Key differences between the Facility
and typical Piedmont hydrogeological flow systems are shown conceptually on Figure 1-1 and Figure
1-2. The primary difference is that low permeability residual soils and saprolite have been excavated
from underlying PWR over much of the former Main Plant, and PWR/rock is the only water -bearing unit
present. In other areas, fill derived from low -permeability native materials was used to fill ravines.
Groundwater at the former Main Plant is recharged from the hillside to the west and from Badin Lake to
the east. Lake water enters the groundwater system through PWR and fractured rock, which are
exposed on the lake bottom and along the lake shore. PWR or fractured rock is present across the
former Main Plant and ABL and has modest hydraulic conductivity. The orientation of bedding and
fractures in the PWR/rock affect groundwater flow directions and COI fate and transport at the Facility
and direct the groundwater flow toward the ABL where it discharges toward the floodplain of Little
Mountain Creek and is captured in part by the ABL collection trench.
Fill has locally higher hydraulic conductivity than PWR/fractured rock, however, it is present in isolated
locations and generally underlain by low permeability saprolite and residual soils and surrounded by
native soils used as fill. The isolation of fill areas limits migration of COIs in groundwater, except in
localized areas where saprolite has been eroded or excavated. Remediation measures further limit
infiltration into and seepage from areas of anthropogenic fill, including caps installed at the On -Site
Landfill, ABL, and West Fill areas.
In localized areas where saprolite was eroded by natural processes, fill is in contact with PWR or
fractured rock. COIs that enter the PWR groundwater system rapidly mix with clean groundwater
recharged from Badin Lake and upslope areas and are also geochemically attenuated through
mineralization due to the strong pH gradient between source areas and recharge areas. A combination
of vertical groundwater gradients, groundwater flow primarily through PWR and fractured rock, and
geochemical attenuation appear to be the primary controls on plume geometry at the former Main
Plant.
Due to the effects of the structural geology, the presence of Badin Lake and potential leakage into the
storm sewers in the south, groundwater flow at the Facility is directed away from Lake Badin towards
Little Mountain Creek. Some small, localized areas of granular fill may have components of groundwater
flow in other directions, however, these flow regimes are minor and likely to only be present for short
periods of time because water rapidly leaks into the deeper PWR unit.
In the context of the ABL, the groundwater flow regime is towards Little Mountain Creek. Generally,
vertical gradients in the higher elevation areas are downward with limited water encountered in the fill
and saprolite. While in the lower elevation of the ABL, vertical gradients reverse with groundwater from
the PWR moving vertically upward into the saprolite, fill, and in the floodplain area alluvial deposits.
Little Mountain Creek is incised into the PWR and all groundwater in the area (from both sides of the
river) discharges to Little Mountain Creek. Baseflow within Little Mountain Creek is maintained by the
flow of groundwater into this system.
EHS Support LLC 72

Hydrogeological Conceptual Site Model Update — Badin Business Park
Conclusions
Large fluoride and cyanide plumes are not observed on the Main Plant due to the combination of
geochemical processes and the dilutionary effects of Badin Lake water entering the PWR and flowing
south toward Little Mountain Creek. While impacts are present within the immediate vicinity of the
SWMUs, these have been shown to rapidly attenuate. Since completion of the last major groundwater
sampling event in 2011, Facility operations have terminated and capping and remedial works have been
completed. This combination of actions, coupled with natural attenuation processes, have likely resulted
in major declines in groundwater concentrations. The planned comprehensive groundwater sampling
event in the first quarter of 2023 will update our understanding of current conditions.
The source of fluoride exceedances at Outfall 005 is infiltration of groundwater into the aged
stormwater conveyance system. Recent efforts to plug the piping have resulted in material benefits and
lowering of fluoride concentrations at Outfall 005. Fluoride -impacted groundwater is still entering the
piping in areas where infrastructure intercepts the PWR. Supplemental investigations planned for 2023
are aimed at verifying this conceptualization and arriving at an appropriate mitigation measure.
Corrective measures undertaken at the ABL are effective at capturing groundwater and apparent
conductivity surveys indicate that the footprint of impacted groundwater beneath the floodplain of
Little Mountain Creek is decreasing in size. A comprehensive program of evaluations is being planned for
the floodplain of Little Mountain Creek in 2023. The expectation is that this HCSM will be updated as
new data becomes available.
EHS Support LLC 73

Hydrogeological Conceptual Site Model Update — Badin Business Park
References
11 References
Acworth, R.I. 1987. The development of crystalline basement aquifers in a tropical environment.
Quarterly Journal of Engineering Geology and Hydrogeology, 20(4), pp.265-272.
Alcoa. 1996. Interim Measures Report. On -Site Landfill (SWMU No. 1) and Wet Weather Run -On
Diversion (SWMU No. 33). Aluminum Company of America - Badin Works. Badin, North Carolina.
December.
Alcoa. 1998. Interim Measures Report, Alcoa-Badin Landfill (SWMU #2), Regrading and Cover System
Installation. Aluminum Company of America - Badin Works, Badin, North Carolina
NCD003162542.
Aquaterra Inc. 1991a. Preliminary Soil and Ground Water Assessment, Badin Municipal Landfill,
Aluminum Company of America, Inc., Badin, North Carolina. August 14.
Aquaterra Inc. 1991b. Preliminary Soil and Groundwater Assessment, ALCOA Brick Landfill, Badin, North
Carolina. September 3.
A.T. Kearney Inc. 1990. Interim RCRA Facility Investigation/Assessment (RFI/A) Report. EPA ID No.
NCD003162542. March.
Badin Business Park LLC, 2019. Little Mountain Creek Confirmatory Sampling Report. May 28.
Benson, R.C., M.S. Turner, W.D. Vogelsong, and P.P. Turner. 1985. Correlation between field geophysical
measurements and laboratory water sample analysis, Proceedings of the Conference on Surface
and Borehole Geophysical Methods in Ground Water Investigations, National Water Well
Association, Worthington, OH, pp. 178-197.
BHE Environmental Inc. 2005. Site Wide Investigation, Alcoa Badin Works, HWY. 740 & SR 1719, Badin
(Stanley County), North Carolina. August 5.
BHE Environmental Inc. 2006. Site Wide Storm Sewer Assessment, Alcoa Badin Facility, Badin, North
Carolina. June 2.
BHE Environmental Inc. 2011. Sitewide groundwater sampling Report, Badin Works, Badin North
Carolina. September.
Buol, S.W. and S.B. Weed. 1991. Saprolite-soil transformations in the Piedmont and Mountains of North
Carolina. In: M.J. Pavich (Editor), Weathering and Soils. Geoderma, 51:15-28.
Civil Environmental Consultants Inc. (CEC). 2020. Investigation Summary Report for the Alcoa/Badin
Landfill. Task 1— Subtask 1— Surface Water Assessment. February.
Civil Environmental Consultants Inc. (CEC). 2021a. Surface Water Sampling Report for the Alcoa/Badin
Landfill and Little Mountain Creek. January.
EHS Support LLC 74

Hydrogeological Conceptual Site Model Update — Badin Business Park
References
Civil Environmental Consultants Inc. (CEC). 2021b. Screening Level Ecological Risk Assessment Report for
the Alcoa/Badin Municipal Landfill. December.
Daniel, C.C. and P.R. Dahlen. 2002. Preliminary hydrogeologic assessment and study plan for a regional
ground -water resource investigation of the Blue Ridge and Piedmont Provinces of North Carolina
(Vol. 2, No. 4105). US Department of the Interior, US Geological Survey.
Environeering. 2008. Investigation Summary Report. Alco, Inc. Old Badin Municipal Landfill and APGI
Switchyard. Badin, North Carolina. February 22.
Environeering. 2010. Corrective Measures Study — Phase 1. Badin Works Facility, Badin, North Carolina.
October 31. July 30.
Environeering. 2012a. Phase 2 — Engineering Data Collection for the Corrective Measures Study, Badin
Works Facility, Badin, North Carolina. October 31.
Environeering. 2012b. Phase 3 - Engineering Data Collection for the Corrective Measures Study. Badin
Works Facility, Badin, North Carolina. October 31.
Environeering. 2013. Phase 4 Corrective Measures Alternatives and Phase 5 Justification and
Recommendation of the Selected Corrective Measure Alternative for the Corrective Measures
Study, Badin Works Facility, Badin, North Carolina.
Environeering. 2015. Alcoa Badin Landfill and Former Ball Field Sampling Activities. Former Badin Works
Facility, Badin, North Carolina. September 15.
Environeering. 2018a. Groundwater Sampling Report for the Badin Business Park Facility, Badin, North
Carolina. September 11.
Environeering. 2018b. Revised Investigative Work Plan For The Phase 4 And 5 Corrective Measures Study,
Alcoa/Badin Landfill, And Former Ball Field Badin Business Park LLC f/k/a Alcoa Badin Works
Facility Badin, North Carolina. April 2.
Environeering. 2018c. Investigative Report for the Little Mountain Creek Area. Badin Business Park Facility,
Badin, North Carolina. December 5.Environeering. 2019. Investigation Summary Report for the
Alcoa/Badin Municipal Landfill. Task 1 - Subtask 2 - Hydrologic Conditions. Badin Business Park
Facility, Badin, North Carolina. December 20.
Feiss, P.G. 1982. Geochemistry and tectonic setting of the volcanics of the Carolina slate belt. Economic
Geology, 77(2), pp.273-293.
Fenneman, N.M. 1917. Physiographic subdivision of the United States. Proceedings of the National
Academy of Sciences of the United States of America, 3(1), p.17.
Geraghty & Miller Inc. 1995. Hydrogeologic Investigation at SWMU #1 - The On -Site Landfill for
Aluminum Company of America Badin, North Carolina. October.
EHS Support LLC 75

Hydrogeological Conceptual Site Model Update — Badin Business Park
References
Geraghty & Miller Inc. 1996. Pine Tree Grove Area Investigation for Aluminum Company of America,
Badin, North Carolina. November.
Ghosh, R.S., D.V. Nakles, I.P. Murarka, and E.F. Neuhauser. 2004. Cyanide speciation in soil and
groundwater at manufactured gas plant (MGP) sites. Environmental engineering science, 21(6),
pp.752-767.
Johnson, A.I. 1967. Specific yield: compilation of specific yields for various materials (No. 1662). US
Government Printing Office.
Law. 1990. Phase I Ground -Water Assessment Northwest Valley; Alcoa-Badin Works.
LeGrand, H.E. 1967. Ground water of the Piedmont and Blue Ridge provinces in the southeastern states
(Vol. 538). US Government Printing Office.
LeGrand, H.E. 2004. A master conceptual model for hydrogeological site characterization in the
piedmont and mountain region of North Carolina: a guidance manual. NC Department of
Environment and Natural Resources, Division of Water Quality, Groundwater Section.
McMahon, P.B., C.J. Brown, T.D. Johnson, K. Belitz, and B.D. Lindsey. 2020. Fluoride occurrence in United
States groundwater. Science of the Total Environment, 732, p.139217.
McVay, K.A., D.E. Radcliffe, L.T. West, and M.L. Cabrera. 2004. Anion exchange in saprolite. Vadose Zone
Journal, 3(2), pp.668-675.
MFG Inc. 2001. RCRA Facility Investigation Report Volume I of II. Alcoa Badin Works, Badin, North
Carolina. March.
NCDEQ, 2017. Review of Phase 4 and 5 of the Corrective Measures Study (CMS). January 23.
North Carolina Geological Survey. 1985. Geologic Map of North Carolina. Thematic map, 1:500,000.
Department of Natural Resources and Community Development, Division of Land Resources,
Raleigh.
Pavich, M.J., G.W. Leo, S.F. Obermeier, and J.R. Estabrook. 1989. Investigations of the characteristics,
origin, and residence time of the upland residual mantle of the Piedmont of Fairfax County,
Virginia (No. 1352).
Power Engineers Inc. 2013. Badin Lake Sediment Capping Project: Construction Completion Report. Badin,
North Carolina. November.
Power Engineers Inc. 2017. Badin Landfill Deep Collection Construction Completion Report. September
15.
Puls, R W. and M. J. Barcelona. Ground Water Issue: Low -Flow (Minimal Dirawdown) Groundwater
Samling Procedures U.S. Environmental Protection Agency, Washington, DC, EPA/540/5-95/504
(NTIS 97-118822), 1996.
EHS Support LLC 76

Hydrogeological Conceptual Site Model Update — Badin Business Park
References
Randell Environmental Consulting. 2016. Spent potlining project (feasibility of an agreement based
approach to clear stockpiles). Final national summary report prepared for the Australian
Department of Environment and Energy. October.
Sowers, G.F. and T.L. Richardson. 1983. Residual soils of piedmont and Blue Ridge. Transportation
Research Record, (919).
Stromquist, A.A. and J.R. Henderson. 1985. Geologic and geophysical maps of south-central North Carolina
(No. 1400).
Stromquist, A.A. and H.W. Sundelius. 1969. Stratigraphy of the Albemarle Group of the Carolina slate belt
in central North Carolina. United States Department of the Interior, Geological Survey.
Steponaitis, V.P., J.D. Irwin, T.E. McReynolds, and C. Moore. 2006. Stone Quarries and Sourcing in the
Carolina Slate Belt. Research Report 25, Research Laboratories of Archaeology, University of North
Carolina, Chapel Hill, NC 27599-3120. April.
Swain, L.A., T.O. Mesko, and E.F. Hollyday. 2004. Summary of the hydrogeology of the Valley and Ridge,
Blue Ridge, and Piedmont physiographic provinces in the eastern United States (Vol. 1422).
Reston, VA: US Geological Survey.
Tailing, J.F. 2010. pH, the CO2 system and freshwater science. Freshwater Reviews, 3(2), pp.133-146.
U.S. Army Corps of Engineers. 2020. Notification of Jurisdictional Determination. Action I.D. SAW-2019-
00450.
Worthington, S.R. 2022. Estimating effective porosity in bedrock aquifers. Groundwater, 60(2), pp.169-
179.
EHS Support LLC 77

Hydrogeological Conceptual Site Model Update — Badin Business Park
Attachment A 2022 Investigation Boring Logs
EHS Support LLC

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-200
\tin `� `_\ 2704 Cherokee Farm Way PAGE 1 OF 2
Suite 101
_ _ _` Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/03/2022 DATE COMPLETED 08/03/2022
CEC FIELD REPRESENTATIVE AJK REVIEWED BY MWW
GROUND ELEVATION 530.35 ft amsl CASING ELEVATION 533.11 ft amsl
LATITUDE 35.413934 LONGITUDE -80.116799
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER John Eisenman
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/03/2022 WELL STICKUP Stickup, 2.76 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Time of Drilling: NA Temporary Well: NA
= End of Drilling: 08/03/2022 20.50 ft bgs / Elev 509.85 ft amsl Well Top of Casing : 09/08/2022 22.95 ft TOC/ Elev 510.16 ft amsl
After Drilling: 08/04/2022 19.60 ft bgs / Elev 510.75 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
— v —'k��-'
-
— —
— 5 —
5ft Dark Brown, Sandy Root Material, Moist -, Loose, (TOPSOIL) 529.8—
—
— -
— —
— —
——
—521—
— —
— —
— —
— —
18-28-46-50
/0.4'
(74)
26-50/0.4'
1 Grout
1
\
\
\
\6.o
Red to Orange, Silty CLAY, with Sand, Moist -, Very Stiff, (RESIDUAL
SOIL)
ft 524.4
— —
— —
—10—
— —
— —
—15—
— —
\
\
\
11\
\
\
\
\
\
\
\
Red, Silty CLAY, Moist -, Hard, Breaks along and across bedding, gray
colors, black redox features along cross cutting bedding planes
(SAPROLITE)
1
2" ID Solid
PVC Riser
frnnfint Ind f'lcvf PnncN

Civil
& Environmental Consultants, Inc. MONITORING WELL NUMBER MW-200
Cherokee101 Farm Way PAGE 2 OF 2
TN 37920
Park LLC PROJECT NAME Badin Business Park
\tin`�
_
CLIENT
PROJECT
`_\ 2704Suite
_ _ ` Knoxville,
Badin Business
NUMBER
300-226 PROJECT LOCATION
Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
-\
Red, Silty CLAY, Moist -, Hard, Breaks along and across bedding, gray
\
colors, black redox features along cross -cutting bedding planes
—
——
\
(SAPROLITE)
—511—
—20—
, 'Top of Casino
\\ I
— —
— —
\
— —
— —
\
\
—
— —
\
— —
— —
\
— —
—25—
\
— —
\
—
— —
\
4 Bentonite
\
— —
Chips
— —
\
—501-
-30—
\
— —
\
—
— —
\
—35—
\
36.0 ft
494.4
—
Sand
11�`
(WEATHERED ROCK) weathered rock, Typ. gray weathered meta-mudstone
— -
-
— —
-{
—
2lotted ID 1"
Slotted PVC
— —\
t�
— —
_
Screen
— J
lli`
-
-40.0
—491——
ft
490.4
—
40
Meta-mudstone bedrock (WEATHERED ROCK)
— —
— —...
'•41.5ft
488.8—
—
End of Monitoring Well at 41.5 feet
—
—45—

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-201
\tin `� `_\ 2704 Cherokee Farm Way PAGE 1 OF 2
Suite 101
_ _ _` Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/04/2022 DATE COMPLETED 08/04/2022
CEC FIELD REPRESENTATIVE AJK REVIEWED BY MWW
GROUND ELEVATION 518.05 ft amsl CASING ELEVATION 521.02 ft amsl
LATITUDE 35.412779 LONGITUDE -80.115822
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER John Eisenman
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/04/2022 WELL STICKUP Stickup, 2.97 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/05/2022 10.10 ft bgs / Elev 507.95 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 12.55 ft TOC/ Elev 508.47 ft amsl
Er After Drilling: NA
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
— v —ll
— —
— 5 —
10.5ft
Dark Brown, Sandy SILT, Root Material, Moist, Loose, (TOPSOIL) 517.6
— —
— —
— —
—
—
—5O9—
— —
—
— —
—
— —
— —
18-37-50/0.
4'
23-50/0.1'
/ Grout
\
\
\
\s.0
Tan to Red, Silty CLAY, Trace Sand, Moist -, Hard to Very Stiff,
(RESIDUAL SOIL)
ft 512.0—
— —
-
—10—
— —
— —
— —
—15—
— —
\
\
\
\Top
\
\
\
\
\
\
\
\
\
Typ of MW-200 + MW-202 (SAPROLITE)
V
of Casing
V
/
2DSolid
PVC Riser
PVC Riser
rrnnfini Ind t'lcvt Pnnc1

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-201
2704Suite Cherokee101 Farm Way PAGE 2 OF 2
` Knoxville, TN 37920
Park LLC PROJECT NAME Badin Business Park
`�
_
`\
CLIENT
PROJECT
`_\
_ _
Badin Business
NUMBER 300-226 PROJECT LOCATION
Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
-\
Typ of MW-200 + MW-202 (SAPROLITE)
— —
\
-499-
-20-
\
- -
- -
\
—
\
- -
\
- -
-25-
\
- -
- -
\
- -
/ Bentonite
Chips
\28.0 ft
490.0
- �\
`\\
Partially weathered rock - Typ. weathered meta-mudstone (WEATHERED
ROCK)
_ -
�as—
-30-\
\ 11t`
r-
— —A,s.
—v,
_ _
=
_
_—„
\.
V�\i1,�
_ _
_
-
-
\ 11l
— —
—
/ Sand
-35
1
- -
\\36.0ft
482.0
Meta-mudstone - Typ., 40' water at time of drilling (WEATHERED ROCK)
-
/
2" ID 0.01"
Slotted PVC
— ��
— —
=
Screen
- J:
11%
-479-
_
-40-
�\
''
- -
_
End of Monitoring Well at 41.0 feet
-45-
- -

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-202
`� `_\ 2704Suite Cherokee101 Farm Way PAGE 1 OF 2
\tin
_ _ _ ` Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/02/2022 DATE COMPLETED 08/03/2022
CEC FIELD REPRESENTATIVE AJK REVIEWED BY MWW
GROUND ELEVATION 515.92 ft amsl CASING ELEVATION 515.63 ft amsl
LATITUDE 35.411635 LONGITUDE -80.115144
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER John Eisenman
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/03/2022 WELL STICKUP Flush Mount (Default), -0.29 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/03/2022 13.80 ft bgs / Elev 502.12 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 7.10 ft TOC/ Elev 508.53 ft amsl
Er After Drilling: NA
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
_ _
— —
i
o.5n Dark Brown, Sandy SILT, Organics, Root Material, Moist -, Loose, 515.4
— —
— —
—
— —
—506—
— —
— —
— —
— —
70
100
28-38-50/0.
4
18-45-50
(95)
l Grout
'
A(TOPSOIL)
Tan, Gravelly SAND, with Silt, and Clay, Moist -, Medium Dense,
Rocks are angular to subangular, flat pieces of meta-mudstone
(FILL)
5.05 510.9_
5
— —
— —
—10—
— —
——
—15—
— —
\
\
\Top
\
\
\
\
\
1\
\
\
\
Tan, Silty CLAY, Moist -, Hard, Core breaks along bedding planes,
Redox. features - rusty red to black along + cross cutting bedding
(SAPROLITE)
of Casing
V
/
2" ID Solid
PVC Riser
/f nnfin, icr4 Mov4 Porvol

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-202
2704Suite Cherokee101 Farm Way PAGE 2 OF 2
` Knoxville, TN 37920
Park LLC PROJECT NAME Badin Business Park
`�
_
`\
CLIENT
PROJECT
`_\
_ _
Badin Business
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
— —
-\
Tan, Silty CLAY, Moist -, Hard, Core breaks along bedding planes,
Redox. features - rusty red to black along + cross cutting bedding
— —
— —
\
(SAPROLITE)
-20-
\
-496-
\
- -
\
- -
\
\
- -
- -
-25-
\
\
\
1 Bentonite
— —
\
— —
Chips
\
\28.0 ft
487.9-
-
�`\\\
Partially weathered - Typ of 203+204, water at 40' during drilling -
\\,
lost dust recovery (WEATHERED ROCK)
— —
- -'
-30�
VA\ \
-
- —`\�
l'
— —
_
/Sand
\\1111i1
2"ID0.01"
;��
_4
—
Slotted PVC
�'
38.0 ft
477.9-
-
—
Screen
_
Meta-mudstone Typ. (WEATHERED ROCK)
41\(r
-40-
�76-
_
-
- -&
.�
-
1,,
(42.0
ft
473.9_
-
End of Monitoring Well at 42.0 feet
-45-
- -

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-203
�`� _ `� _ `i`_` 2704Suite Cherokee101 Farm Way PAGE 1 OF 2
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/02/2022 DATE COMPLETED 08/02/2022
CEC FIELD REPRESENTATIVE AJK REVIEWED BY MWW
GROUND ELEVATION 524.78 ft amsl CASING ELEVATION 524.42 ft amsl
LATITUDE 35.410280 LONGITUDE -80.115167
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER John Eisenman
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/02/2022 WELL STICKUP Flush Mount (Default), -0.36 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/02/2022 16.50 ft bgs / Elev 508.28 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 15.30 ft TOC/ Elev 509.12 ft amsl
Er After Drilling: 08/03/2022 15.90 ft bgs / Elev 508.88 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
— —
— —o°
bpol-
o d
Opp
o 4
at-
,' -"
. t
-
.t
__
3.0ft
Tan, Sandy GRAVEL, with Clay, and Silt, Moist -, Medium Dense, (FILL)
521.8—
— —
— —
—
—
—
—
— —
— —
—515—
— —
— -
8-18-44-46
(62)
12-37-50
(87)
22-50/0.4'
/ Grout
— 5 —
Red, Silty CLAY, Moist -, Very Stiff to Hard, Very stiff to hard with depth,
slightly moist to moist with depth, medium to high plasticity (RESIDUAL
SOIL)
'
k.
'70ft 517.8—
— —
—10—
— —
—15—
- —
Red to Tan, Silty CLAY, Moist, Hard, Some redox features or secondary
\ features - yellow to white along bedding planes (RESIDUAL SOIL)
+\1
`\ 9.5ft 515.3
Tan to Yellow, Clayey SILT, Moist -, Hard, (SAPROLITE)
y
Top of Casings
1
. .
2" ID Solid
PVC Riser
frnnfini Ind f'lcvf PnncN

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-203
PAGE 2 OF 2
Business Park
\tin
_
CLIENT
PROJECT
`� `_\ 2704Suite Cherokee101 Farm Way
_ _ ` Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME Badin
NUMBER 300-226 PROJECT LOCATION
Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
-20-
-25-
— —
30.0ft
Tan to Yellow, Clayey SILT, Moist -, Hard, (SAPROLITE)
494.8-495-
— —
-505-
- -
— -
--
— —
_ _
- -
485-
— —
-
1 Bentonite
Chips
1 Sand
_.
—
_
30
- —��
-J.111`
-35-,
—
—
\\11i1
Ak,
,,
Partially weathered meta-mudstone, yellow to gray dust feedback
(WEATHERED ROCK)
484.8
-
=
—
D 1"
20.0 V
Slotted PVC
Screen
40--40.0ft
——`�\111
1 �,42.0
ft
Gray, Hard, meta-mudstone (WEATHERED ROCK)
482.8-
_
-45-
End of Monitoring Well at 42.0 feet

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-204
\i `� `\ 2704 Cherokee Farm Way PAGE 1 OF 2
Suite 101
_ _ _`
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/01/2022 DATE COMPLETED 08/02/2022
CEC FIELD REPRESENTATIVE AJK REVIEWED BY MWW
GROUND ELEVATION 520.98 ft amsl CASING ELEVATION 520.67 ft amsl
LATITUDE 35.409282 LONGITUDE -80.115465
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER John Eisenman
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/01/2022 WELL STICKUP Flush Mount (Default), -0.31 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/01/2022 34.50 ft bgs / Elev 486.48 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 12.28 ft TOC/ Elev 508.39 ft amsl
Er After Drilling: 08/02/2022 12.80 ft bgs / Elev 508.18 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
v
— —
\ 1o.5ft
Dark Brown, Sandy SILT, Organics, Root Material, Moist, Loose, Grass on 520.5
— —
(34)
12-32-50/0.
4,
/ Grout
12
\Top (TOPSOIL) /
Tan, Gravelly SAND AND SILT, Moist -, Loose to Medium Dense, Ranges
.oft from very sandy silt to very silty sand (FILL) 519.0
— —
\
\
Red, Silty CLAY, Moist -, Stiff to Hard, (RESIDUAL SOIL)
5.0 ft 516.0
— —
5
— —
— —
— —
—10—
— —
— —
—15—
— —
\
\
\
\
\
\
\
\
\Top
\
\
\
Orangish Red, Silty CLAY, with Sand, Moist -, Hard, Visible bedding, redox
features are rusty red and black (SAPROLITE)
of Casings
Y
——14-12-22-24
— —
— —
- -
—511—
— —
—
— —
— —
2" ID Solid
PVC Riser
frnnfini Ind t'lcvf Ponta\

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-204
2704Suite Cherokee101 Farm Way PAGE 2 OF 2
Knoxville, TN 37920
Park LLC PROJECT NAME Badin Business Park
`�
_
`\
CLIENT
PROJECT
`_\
_ _`
Badin Business
NUMBER
300-226 PROJECT LOCATION
Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
— —
-\
Orangish Red, Silty CLAY, with Sand, Moist -, Hard, Visible bedding, redox
features are rusty red and black (SAPROLITE)
— —
\
— —
1 Bentonite
Chips
-20-
\
-501-
- -
\
—
\
- -
\
— —
-25-
\\
- -
- -
\
- -
\27.0 ft
494.0
-
Gray, Hard, Partially Weathered, Meta-Mudstone, Light Gray Dust
Recovery (WEATHERED ROCK)—
--1
—N)k
A
— —
1
Sand
— -\
__,\,...,
,
v
__
- -
__
_
—_
_
_
�`�
36.0 ft
485.0
_t
2
2" ID 0.01"
Slotted PVC
Gray, Hard, Meta-Mudstone, Very Hard below 39' (WEATHERED ROCK)
— �A
— —
_
Screen
l
—
-40-!
`
. \i,
—481-
-
1, 1'
41.5ft
479.5
—
End of Monitoring Well at 41.5 feet
— —
-45-
- -

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-205
�`� `� `\ 2704 Cherokee Farm Way PAGE 1 OF 2
m
_ _ _` Suite 101
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/04/2022 DATE COMPLETED 08/04/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 521.08 ft amsl CASING ELEVATION 523.85 ft amsl
LATITUDE 35.408317 LONGITUDE -80.116057
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Zach Thompson
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/04/2022 WELL STICKUP Stickup, 2.77 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/04/2022 26.50 ft bgs / Elev 494.58 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 15.74 ft TOC/ Elev 508.11 ft amsl
Er After Drilling: 08/05/2022 23.80 ft bgs / Elev 497.28 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
�45'
5
Orange and Red, Sandy SILT, and Sand, Dry, (RESIDUAL SOIL)
5.0ft 516.1
— —
—
— —
—512-
— —
— —
— —
— —
— —
—
— —
80
100
80
50
95
100
_
7 (13) 4
8-5-5-7
(10)
10-5-5-13
(10)
9-8-13-16
(21)
8-20-39-46
(59)
15-17-33-50
/0.3'
(50)
/ Grout
— —
— —
-10—
— —
\
Orangish Brown to Reddish Orange, Silty CLAY, Moist - to Moist,
Transition Zone Material, black oxide staining from 9.7 to 12
(RESIDUAL SOIL)
12.0 ft 509.1
/
2" ID Solid
PVC Riser
— —
—15—
—
y Orange to Brown, Clayey SILT, Moist - to Dry, Saprolite with black
Top of Casing and silver oxide staining, structure is less well-defined in top half of
13-15 interval, structure is noted to be nearly vertical in bottom half
of 13-15 interval (SAPROLITE)
16.5ft /ffannish Gray to Gray, Dry to Moist -, PARTIALLY WEATHERED \\_ 504.6
i._ `('
\\
l r
_
ROCK, silver oxide staining in top 6", nearly vertical veins of clay
noted in bottom 4" of 21-23 interval (WEATHERED ROCK)
/rnnfini icri M ,v+ Pono\

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-205
PAGE 2 OF 2
Badin Business Park
�`� _ `� _ `_` \ 2704Suite Cherokee101 Farm Way
CLIENT
PROJECT
Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
— �\
—��
—
—20—\
--'
- J\\\`l
—25—\
11�
_
\\�l
1��
k\
al'
�1i
1
\�\
Tannish Gray to Gray, Dry to Moist -, PARTIALLY WEATHERED
ROCK, silver oxide staining in top 6", nearly vertical veins of clay
noted in bottom 4" of 21-23 interval (WEATHERED ROCK)
27.Oft 494.E
— —
—502—
-
- —
—
492
—
— —
—482-
— -
85
90
22-so/o.4
25-50/0.4'
14-29-50/0.
4 Bentonite
4 Sand
-
—
_
-
—
_
_
_
—
—
Slotted PVC
Screen
—
— —\
kGray,
\1
\1\11
�\ ,31.09
METAMUDSTONE (WEATHERED ROCK)
490.1
—35—
— —
-40—
-45—
End of Monitoring Well at 31.0 feet

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-206
�`� _ `� `i` 2704Suite Cherokee101 Farm Way PAGE 1 OF 2
_ _`
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/29/2022 DATE COMPLETED 06/29/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 512.25 ft amsl CASING ELEVATION 511.87 ft amsl
LATITUDE 35.407133 LONGITUDE -80.115223
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 06/29/2022 WELL STICKUP Flush Mount (Default), -0.38 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 06/29/2022 5.00 ft bgs / Elev 507.25 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 3.75 ft TOC/ Elev 508.12 ft amsl
Er After Drilling: 06/30/2022 4.80 ft bgs / Elev 507.45 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
—
— 5 —
—
— —
Orange Brown, Sandy SILT, with Gravel, Moist, Topsoil at surface
(RESIDUAL SOIL)
4.0 ft 508.2
Top of casing Orange Brown, Clayey SILT, Wet, Saprolitic (SAPROLITE)
I
506.0
— —
— —
—503—
_
— —
_ _
— —
—
— —
75
50
50
100
50
50
4-2-4-6
(6)
1-1-3-1
(4)
1-1-1-1
(2)
1-2-1-5
(3)
2-4-3-3
(7)
-2-1
2-(3)
(3)
1 Grout
+
Orange Brown, CLAY, Wet, Transition -Zone Material (SAPROLITE)
'°oft Gray, PARTIALLY -WEATHERED ROCK, Wet (WEATHERED
10
—®t
3.':
--5°2.2
\ROCKJ /
Orange Brown, CLAY, Wet, Transition -Zone Material (SAPROLITE)
.7 ft 500.6
2.°ft Gray, PARTIALLY -WEATHERED ROCK, Wet (WEATHERED Soo.z
—
—
\ --
ROCK) /
Red Brown, CLAY, Transition -Zone Material, Interbedded with Gray
Partially -Weathered Rock (SAPROLITE)
ft 498.2
/
2" ID Solid
PVC Riser
—
Orange Brown, Clayey SILT, Wet, Saprolitic (SAPROLITE)
—15Sl5.Oft
— —
\•`a
`
Orange, CLAY, Wet, Transition -Zone Material (SAPROLITE)4972—
9
/r^nnfin, ic,1 Mov4 Pono1

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-206
�`� _ `� _ _` `i` 2704Suite Cherokee101 Farm Way PAGE 2 OF 2
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
'is
.oft Orange, CLAY, Wet, Transition -Zone MaterialiSAPROLIT) 494.2
— —
�93-
— —
— —
- -
— —
- -
-483—
— —
— —
— —
-473-
50
30
75
75
100
100
100
100
1-2-2-4
(4)
3-4-3-3
(7)
351021
(15)
3-5-9-50/0.3
(14)
50/0.2'
50/0.4'
31-50/0.4'
50
/ Bentonite
Chips
I Sand
—
—
,._
�
`�`
Red Brown, CLAY, Wet, Transition -Zone Material, Interbedded with
Gray Partially -Weathered Rock (SAPROLITE)
o.oft 4922
20
_
(
t
Gray, PARTIALLY -WEATHERED ROCK, Moist (WEATHERED
ROCK)
22.0ft 490.2
- -
Orange Brown, Clayey SILT, Moist, Silver Oxide Staining, Moist
(RESIDUAL SOIL)
24.0 ft 488.2
-
-
-
_
/
-25--
— -'
30
--Af
- -��
35
\k(f
AV
av
\\ilia
I35.0
\1
`N
Gray, PARTIALLY -WEATHERED ROCK, Dry (WEATHERED
ROCK)
ft 477.2
-_
—
_
-
2" ID 0.01"
Slotted PVC
Screen
- -
-40-
-45-
End of Monitoring Well at 35.0 feet

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-207
�`� _ `� _ `_` \ 2704Suite Cherokee101 Farm Way PAGE 1 OF 1
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/27/2022 DATE COMPLETED 06/27/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 512.81 ft amsl CASING ELEVATION 512.34 ft amsl
LATITUDE 35.406029 LONGITUDE -80.113438
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 06/27/2022 WELL STICKUP Flush Mount (Default), -0.47 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 06/27/2022 7.00 ft bgs / Elev 505.81 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 4.22 ft TOC/ Elev 508.12 ft amsl
Er After Drilling: 06/28/2022 4.60 ft bgs / Elev 508.21 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
Orange Brown, Clayey SILT, with Gravel, Topsoil at surface
(RESIDUAL SOIL)
4.0ft 508.8—
— —
—
_ — —
— —
—503—
_ _
— —
25
so
100
100
2-3-2-3
(5)
2-3-3-8
(6)
15-20-50/0.
4'
so/0.3'
4
/ Grout
2" ID Solid
PVC Riser
1 Bentonite
Chips
I Sand
— 5—
— —
— _\�
—,o—.
—
—`
\
iOrange Brown, Silty CLAY, Moist to Wet, Some gravel 4-6' bgs
op ofCasi (RESIDUAL SOIL)
8.5 ft 504.3
_
—
11
Ili`
I
\ '
\kci
,Jj15.0ft
Gray, PARTIALLY -WEATHERED ROCK, Wet (WEATHERED
ROCK)
497.8—
_
_
Slotted PVC
Screen
15
End of Monitoring Well at 15.0 feet

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-208
\i `� `\ 2704 Cherokee Farm Way PAGE 1 OF 2
Suite 101
_ _ _`
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/05/2022 DATE COMPLETED 08/05/2022
CEC FIELD REPRESENTATIVE AJK REVIEWED BY MWW
GROUND ELEVATION 516.29 ft amsl CASING ELEVATION 518.76 ft amsl
LATITUDE 35.406075 LONGITUDE -80.116784
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER John Eisenman
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/05/2022 WELL STICKUP Stickup + Marker, 2.47 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/05/2022 12.80 ft bgs / Elev 503.49 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 10.76 ft TOC/ Elev 508.00 ft amsl
Er After Drilling: NA
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
v
— —L
- —
- —
— 5
l
lo.5ft
Dark Brown, Sandy Root Material, Moist -, Loose, Grass on top 515.8—
—
— -
-
—
— —
— —
— —
—507-
— —
— —
40-50/0.4'
l Grout
\
\2.5ft
\(TOPSOIL)
Red and Yellow, Silty CLAY, with Gravel, and Sand, Moist, Stiff, CL-Fill, RX
are angular to sub -angular, flat pieces of meta-mudstone (FILL)
513.8—
\
\
\5.0
Red, Silty CLAY, Trace Sand, Moist, Very Stiff, (RESIDUAL SOIL)
ft 510.3
— —
— —
-
—10
—15—
— —
— —
\
\
\Top
\
\
\
\\
\
\
\
Gray, Silty CLAY, Moist -, Hard, Redox features are rusty red along
bedding planes (SAPROLITE)
y
of Casing
2" ID Solid
PVC Riser
1 Bentonite
trnntini Ind nioYf pnno1

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-208
2704Suite Cherokee101 Farm Way PAGE 2 OF 2
Knoxville, TN 37920
Park LLC PROJECT NAME Badin Business Park
�`� _ `� _ `_` \
CLIENT
PROJECT
Badin Business
NUMBER 300-226 PROJECT LOCATION
Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
-
-\
20.0 9
Gray, Silty CLAY, Moist -, Hard, Redox features are rusty red along
bedding planes (SAPROLITE)
496.3
— -
-497
— -
— —
— —
— —
-
-487-
-477-
Chips
Sand
20
- —\(
— ��\11i`
-25-\
-
\ �'
\���
V '
26.0ft
Partially weathered rock - Typ. meta-mudstone weathered (WEATHERED
ROCK)
490.3
_1
—
-
2" ID 0.01"
Slotted PVC
Screen
- -;.1�
-
- -
-30-
-35-
- -
-40-
-45-
7.68
Meta-mudstone, water at 26' at time of drilling (WEATHERED ROCK)
488.7
End of Monitoring Well at 27.6 feet

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-209
\tin `� `_\ 2704 Cherokee Farm Way PAGE 1 OF 3
Suite 101
_ _ _` Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/04/2022 DATE COMPLETED 08/04/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 521.86 ft amsl CASING ELEVATION 524.74 ft amsl
LATITUDE 35.407018 LONGITUDE -80.118123
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Zach Thompson
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/04/2022 WELL STICKUP Stickup, 2.88 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/04/2022 47.00 ft bgs / Elev 474.86 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 12.85 ft TOC/ Elev 511.89 ft amsl
Er After Drilling: NA
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
�45'
— —
••,
•••
•
•
•
•
•
•
•
•
•
•
•
•
0
Tan and Orange, SAND, with Gravel, Dry, (FILL)
5.811 516.1
— —
—
— —
�12—
— —
- -
— —
— —
100
60
70
40
50
6-6-29-50
(35)
17-25-46-50
(71)
15-28-45-50
/0.3'
(73)
25-50/0.4'
18-28-50/0.
4'
-.
Orangish Brown, Clayey SILT, Dry, Red and black oxide staining
(SAPROLITE)
513.9—
—
—10—\
_.4
—15�
- _A15.5ft
— —1\\i
ti
1
\\\11,
.11%
\�
-
\
\(
``
Dry, PARTIALLY WEATHERED ROCK with black to red oxide
staining (WEATHERED ROCK)
Top of Casing
506.4
Gray, METAMUDSTONE (WEATHERED ROCK)
!r nnfini icrl Alovf Porrol

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-209
PAGE 2 OF 3
Badin Business Park
`\
CLIENT
PROJECT
`� `_\ 2704Suite Cherokee101 Farm Way
_ _ _` Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
—
� 11�,
Gray, METAMUDSTONE (WEATHERED ROCK)
— —
- -\�\1
— —
1 Grout
—20—\
11i'
111 ,
—502-
- —‘
)(1
2" ID Solid
PVC Riser
—
\\.\1 \`
--,1--A,
—25-1.,
V
- -
Al'
--\\\W
--
\ lll`
—492—
--NN
-\Ill
--
v., ,
-35-k(f
- -
—-\\\11l'
1
--
\\\11l'
\l'
— —
4 Bentonite
—40-7
Paz
\\\11l'
— —
—
-\11
l`
--�
--
_
--\\\11l'
--
-
-45-V�\ill
l
—_
— —\
l\l'
— —
I Sand

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-209
PAGE 3 OF 3
Badin Business Park
�`� _ `� _ `_` \ 2704Suite Cherokee101 Farm Way
CLIENT
PROJECT
Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
— —7\
Ali`
Gray, METAMUDSTONE (WEATHERED ROCK)
— —
Slotted PVC
_
Screen
— —
1
— —
_
\�111'
—
-50-,
1��
--472-
_
AI
52.06 469.9-
-
End of Monitoring Well at 52.0 feet
-55-
-60-62-
-65-
-70-
-452-
-75-
- -

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-210
`m `m `� 1 2704 Cherokee Farm Way PAGE 1 OF 2
_ _ _
` Suite 101
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/03/2022 DATE COMPLETED 08/03/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 521.78 ft amsl CASING ELEVATION 524.76 ft amsl
LATITUDE 35.404681 LONGITUDE -80.118712
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Zach Thompson
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/03/2022 WELL STICKUP Stickup, 2.98 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/03/2022 26.00 ft bgs / Elev 495.78 ft amsl Temporary Well: NA
= End of Drilling: NA Well Top of Casing : 09/08/2022 13.14 ft TOC/ Elev 511.62 ft amsl
Er After Drilling: 08/04/2022 23.50 ft bgs / Elev 498.28 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
Es
5•
:..
Gray, SAND AND GRAVEL, (FILL)
5.0 ft 516.8
— —
512—
—
— —
— —
— —
— —
- -
80
80
75
so
85
15-28-45-50
(73)
3-10-42-50/
0 4'
(52)
4-25-39-27
(64)
15-50/0.4'
8-31-50/0.4'
4—
1 Grout
2" ID Solid
PVC Riser
I Bentonite
— —
Grayish Tan to Orangish Brown, Clayey SILT, with Sand, Dry, Red,
black, and silver oxide staining and nearly horizontal structure noted
in 5-7 interval (SAPROLITE)
10.oft 511.8
10
1
''
Top of Casing Gray, Dry, PARTIALLY WEATHERED ROCK (WEATHERED ROCK)
11.0ft 510.8—
—
Orangish Brown, Clayey SILT, Dry, (SAPROLITE)
12.0 ft 5o9.8
—
—15�
—
— —.'
��
\\\lII
�,i
\\1
4
�
1
I
'I�
\
Gray to Tannish Gray, Dry, PARTIALLY WEATHERED ROCK; black
oxide staining from 13-15'; red oxide staining from
15-17' (WEATHERED ROCK)
(C`nnfiniiod Alcvf Pnncl

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-210
PAGE 2 OF 2
Badin Business Park
�`� _ `� _ `_` \ 2704Suite Cherokee101 Farm Way
CLIENT
PROJECT
Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
—
� 11'
Gray to Tannish Gray, Dry, PARTIALLY WEATHERED ROCK; black
from 13-15'; from
— —
100
36-50
1 [
oxide staining red oxide staining
15-17' (WEATHERED ROCK)
— —
-20-`
1�l`
-
�\22.06
499.8-
-
_
-
\ \
Gray, METAMUDSTONE (WEATHERED ROCK)
— —
_
\ c
——\111
— —
_
_
I Sand
-25-\
11 '
—�
2" ID 0.01"
— —1
�f
����
_
—
Slotted PVC
Screen
_ _4_..,
__\\IN
I,
\' 111,
30.0 6 491.8-492-
_
_
-
30
End of Monitoring Well at 30.0 feet
-35-
-40-
-482-
-45-

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-211
�`� `u `\ 2704Suite Cherokee101 Farm Way PAGE 1 OF 2
_ _ _`
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/02/2022 DATE COMPLETED 08/03/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 523.16 ft amsl CASING ELEVATION 525.18 ft amsl
LATITUDE 35.404720 LONGITUDE -80.121901
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Zach Thompson
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/02/2022 WELL STICKUP Stickup, 2.02 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/02/2022 26.50 ft bgs / Elev 496.66 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 20.70 ft TOC/ Elev 504.48 ft amsl
Er After Drilling: 08/03/2022 24.60 ft bgs / Elev 498.56 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
�41'
—5—
— —
-10—
112.0ft
Orangish Brown, Clayey SILT, Topsoil at surface; Cuttings noted to
transition to saprolite approaching 12' (RESIDUAL SOIL)
511.2
— —
—514-
—
— —
— —
—
100
80
60
23-46-50/0.
2
29-39-50/0.
4'
26-50
/ Grout
—
—15-
— ��\
--1
\ `
�
\\\11l
\ V
�f
11
IE--
Tannish Gray to Gray, Dry, PARTIALLY WEATHERED ROCK; Black
and red oxide staining observed from 12-15' (WEATHERED ROCK)
/
2" ID Solid
PVC Riser
fr^nnfini icri Alov4 Form\

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-211
PAGE 2 OF 2
Badin Business Park
`\
CLIENT
PROJECT
`� `_\ 2704Suite Cherokee101 Farm Way
_ _ _ ` Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
—
Tannish Gray to Gray, Dry, PARTIALLY WEATHERED ROCK; Black
and red oxide staining observed from 12-15' (WEATHERED ROCK)
so
43-50/0.3'
Top of Casing
— —
\
—504—
\\�11
100
31-50
-.
—20—\
1\ l
_ _
��
/ Bentonite
_
.11k`
—25—\
11�
—
——1���f^
— —
—
I Sand
"
\ \i
`1
_�
2" ID 0.01
Slotted PVC
— —;
- —
—
_
Screen
— —\\IN
—494
_
1f1�
\It.30.0fl
493.2
30
End of Monitoring Well at 30.0 feet
— —
7 —
— -
-35—
— —
—484-
-40-
-45—

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-212
\i `� `\ 2704 Cherokee Farm Way PAGE 1 OF 2
Suite 101
_ _ _`
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/02/2022 DATE COMPLETED 08/02/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 517.83 ft amsl CASING ELEVATION 520.31 ft amsl
LATITUDE 35.403388 LONGITUDE -80.121320
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Zach Thompson
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/02/2022 WELL STICKUP Stickup, 2.48 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/02/2022 31.90 ft bgs / Elev 485.93 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 17.10 ft TOC/ Elev 503.21 ft amsl
Er After Drilling: 08/03/2022 28.00 ft bgs / Elev 489.83 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
�45'
�� .
•
•
•
•
•
• .
Gray to Black, GRAVEL, (FILL)
5.5 ft 512.3
— —
—
—50�
— —
—
—
— —
100
100
100
100
100
WOH-6-8-1
o
(14)
6-8-13-25
(21)
11-15-32-50
/0.4'
(47)
40-26-50
(76)
50/0.4'
~—
Grout
2" ID Solid
PVC Riser
— —
— —
— —
\
\
\
\
.9.0
Orange, Silty CLAY, Moist -, Dense, Topsoil observed at
5.5' (RESIDUAL SOIL)
ft 508.8—
—10—
— —
Orangish Brown, Clayey SILT, and Clay, Dry, Black oxide staining
observed 9-11' (SAPROLITE)
13.08 504.8—
��\
i�13.7R
Tannish Gray, Dry, PARTIALLY WEATHERED ROCK
soa.z—
— —
_h\(WEATHERED ROCK)
Orangish Brown, Clayey SILT, Dry, Black and silver oxide staining
Top of Casing
15.0ft (SAPROLITE) 502.9
15 ` a
�
,1( 1 I
- -1�\l
Tan to Gray, Dry, PARTIALLY WEATHERED ROCK (WEATHERED
ROCK)
fan to Gray, Clayey SILT, Dry, Black, purple, and silver oxide
17.s t[ — _ 1 staining (SAPROLITE) `— 5oo.s
/rnnfin, icrl Mov4 Porvol

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-212
Cherokee101 Farm Way PAGE 2 OF 2
Knoxville, TN 37920
Park LLC PROJECT NAME Badin Business Park
`�
_
`\
CLIENT
PROJECT
`_\ 2704Suite
_ _`
Badin Business
NUMBER
300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATEA L
Tan to Gray, Clayey SILT, DryRI,
Black, purpleDESCRIPTION, and silver oxide
— —
100
19-29-50
staining (SAPROLITE)
(79)
iss ft
498.3
100
18-50/0.4'
Tannish Gray to Gray, Dry, PARTIALLY WEATHERED ROCK
—498—
_\
—20
\ 11i‘
(WEATHERED ROCK)
100
34-50/0.3'
— _\�\11t`
- -
100
41-50/0.3'
— —�
\ill
—25-1
— —
- -�\ill('
\ \\\t.
- -
I Bentonite
1 (28.0ft
I
489.8—
—
—
����
Gray, METAMUDSTONE (WEATHERED ROCK)
— J\\�111'
- -
—30—
\ 1\l`
\
—488—
A
—
-�\
��l
'
——
—
__
I Sand
-4
2" ID 0.01"
— —
\\\
— —
Slotted PVC
\ �� h
`
=
Screen
—
1`�
35.0 ft
482.8—
—
35
End of Monitoring Well at 35.0 feet
—40—
—47�
—45—

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-213
�`� _ `� _ `_` \ 2704Suite Cherokee101 Farm Way PAGE 1 OF 4
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/29/2022 DATE COMPLETED 08/04/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 517.79 ft amsl CASING ELEVATION 520.46 ft amsl
LATITUDE 35.401662 LONGITUDE -80.119350
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Zach Thompson
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/04/2022 WELL STICKUP Stickup, 2.67 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Time of Drilling: NA Temporary Well: NA
= End of Drilling: 08/02/2022 19.90 ft bgs / Elev 497.89 ft amsl Well Top of Casing : 09/08/2022 22.90 ft TOC/ Elev 497.56 ft amsl
After Drilling: NA
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
�45'
Orange to Brown, Silty SAND, Topsoil at surface (RESIDUAL SOIL)
4.0ft 513.8—
—
— —
— —
—508—
- -
— —
— —
--
100
100
100
100
100
100
100
7 42-so/o.3'
19-44-31-50
/0.3'
25-50/0.3'
45-50/0.4'
37-50/0.4'
12-50/0.3'
50/0.2'
—
51
—
— —
—10—\
—
_
—15\
—
--1�
II I
,
I `.4.7ft
�`
Orange, Clayey SILT, Dry, (RESIDUAL SOIL) 513.1
A
\ Ili.
\a
,
\ ��
4:
1--:'
1
\ \11�
](f
\`ti
Gray, Dry, PARTIALLY WEATHERED ROCK, Dark red, black, and
silver oxide staining (WEATHERED ROCK)
ff nnfini icrJ Aiovf Pono1

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-213
2704Suite Cherokee101 Farm Way PAGE 2 OF 4
Knoxville, TN 37920
Park LLC PROJECT NAME Badin Business Park
`\
CLIENT
PROJECT
`� `_\
_ _ _`
Badin Business
NUMBER
300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
—
11
1
19.0ft
Gray, Dry, PARTIALLY WEATHERED ROCK, Dark red, black, and
silver oxide staining (WEATHERED ROCK)
y Gray, METAMUDSTONE (WEATHERED ROCK)
Casing
498.8—
— —
—
—498-
—
— —
--
— —
- -
— —
was
— -
— —
—
-
—478—
_
——
_ _
/
1 Grout
-20—`
— _1
-
_
- -..\--.\-1::
—25-1
-
—
so
— --NN
- —:
—35—\
——'1'
_ —
—
40—
_
-_\\\k
__of
—45-1N•
-—
..c.!
l
1�1�Top
_.
' Ill`
:Ili`
Al'-
V
'cl
\ Wk
\�111`
li'
� i
��_
Ak'
1\t`
A_:4`
‘,f
,
l.
,,;
of
irnnfini Ind Alov4 Pnno\

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-213
PAGE 3 OF 4
Badin Business Park
`\
CLIENT
PROJECT
`� `_\ 2704Suite Cherokee101 Farm Way
_ _ _` Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
—
� 11i,
Gray, METAMUDSTONE (WEATHERED ROCK)
— —
— -
— —
Ai'
-468-
-50-\
I\\'
- -'�
-
- -\\�111,
-
-
:Ili`
-55-4l
- -
1 �f
_ _
4 Bentonite
_
_ _,,\,,
AV
;4_..,
_
v,,
-458-
-
- -NN
Ili`
- -
_
_
-
v.�'
: Ili`
- -
-
_
_85-���f
- -
- wA�111'
_ _
-
A(\%\li
-
I Sand
Ak'
— �\
1t'
—
Slotted PVC
—70—
1
as—
_
Screen
_
\ \'
— —
-
-�,a'
--
_.
A(Wi
__-
-75\\\i1i
-
--:Ili'
_
- -"\,
_
irnnfini Ind Aiov4 Pnno\

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-213
PAGE 4 OF 4
Badin Business Park
`� _ `� _ _` `r` 2704Suite Cherokee101 Farm Way
CLIENT
PROJECT
Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
_
—
1'\
Gray, METAMUDSTONE (WEATHERED ROCK)
_
End of Monitoring Well at 78.5 feet
— -
-438-
-80-
-85-
-
-428-
-90-
-95-
- -
100-
--105-
�18-

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-214
`
2704`Cherokee Farm Way PAGE 1 OF 2
\ Suite 101
ukTr
_ ` Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/28/2022 DATE COMPLETED 06/28/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 495.71 ft amsl CASING ELEVATION 495.35 ft amsl
LATITUDE 35.399597 LONGITUDE -80.114490
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 06/28/2022 WELL STICKUP Flush Mount (Default), -0.36 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 06/28/2022 29.60 ft bgs / Elev 466.11 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 10.12 ft TOC/ Elev 485.23 ft amsl
Er After Drilling: 06/29/2022 9.50 ft bgs / Elev 486.21 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
Orange Brown, Sandy SILT, and Clay, Dry, Topsoil at surface
(RESIDUAL SOIL)
s.o n 490.7—
— —
—
—
�8�
--
- -
— —
100
17-322 50/0.
4
I Grout
5
— —$
—
--\
---v
—,0—.1�
__A,
-
—N:'
—1s�
- -
-_4
`\. 111
A\11;
(
11�'
1 (
(
1`
.
mIE--
Gray, METAMUDSTONE (WEATHERED ROCK)
y
Top of Casing
2" ID Solid
PVC Riser
frnnfini icri Alovf Pono1

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-214
PAGE 2 OF 2
Badin Business Park
`\
CLIENT
PROJECT
`� `_\ 2704Suite Cherokee101 Farm Way
_ _ _` Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
—
1`,
Gray, METAMUDSTONE (WEATHERED ROCK)
— -
-,- 41
—476—
—20—\
\l`,
--'�
- -\\\111`
- -
- -A('
-25-\
\l
- -1AV
�f
- -
— —\
1�1`
- -
1 Bentonite
Chips
——N\\11\`
— —
\ W
—466—
\\1
-
I Sand
\\l'
I
-/
—
2" ID 0.01"
Slotted PVC
— —
-
`
A
_ _
Screen
1`\�
35.05 460.7
35
End of Monitoring Well at 35.0 feet
-456-
—40—
—45—

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-215
2704 Cherokee Farm Way PAGE 1 OF 2
Suite 101
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/08/2022 DATE COMPLETED 08/08/2022
CEC FIELD REPRESENTATIVE MWW REVIEWED BY MWW
GROUND ELEVATION 529.72 ft amsl CASING ELEVATION 532.70 ft amsl
LATITUDE 35.404522 LONGITUDE -80.124640
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Richy Lemire
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/08/2022 WELL STICKUP Stickup, 2.98 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Time of Drilling: NA Temporary Well: NA
= End of Drilling: NA Well Top of Casing : 09/08/2022 27.60 ft TOC/ Elev 505.10 ft amsl
Er After Drilling: NA
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
iss
— —
— —
0.5ft Brown, No odor, Dry, Soft to Medium Stiff, (TOPSOIL) 529.2
— —
— —
—
100
100
100
3-5-11-17
(16)
7-1 (420)31
4-11-15-16
(26)
I
4 Grout
♦♦ ;
♦ .
♦ •
♦ •
.
Reddish Brown, Silty CLAY, Trace Cobbles, No odor, Dry, Medium
Stiff, (FILL)
3.0 ft 526.7
— —
— —
Mottled Reddish Brown to Orangish Brown, Silty CLAY, No odor,
Dry, Very Stiff, Minor oxide stained seams (SAPROLITE)
10.0 ft 519.7-52°—
10
—15—
— —
Reddish Brown, Silty CLAY, No odor, Dry, Very Stiff to Hard,
Weathering seams from 10 to 30 degrees, Increase silt content with
depth (RESIDUAL SOIL)
(C`nnfiniiod Alcvf Pnncl

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-215
`� `_\ 2704Suite Cherokee101 Farm Way PAGE 2 OF 2
_ _ _ ` Knoxville, TN 37920
`\
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
1fi.oft Reddish Brown, Silty CLAY, No odor, Dry, Very Stiff to Hard, 511.7—
—
— —
—510-
—
— —
- -
— —
— —
—500-
_ —
— -
— —
— —
100
100
100
100
10-24-50/0.
4
11-28-50/0.
2'
13 28 13 20 (41)
17-50/0.2'
-
"
2" ID Solid
PVC Riser
1 Bentonite
Chips
I Sand
_
— —
-20—
\
\
\
_ _
Weathering seams from 10 to 30 degrees, Increase silt content with I
IldepthjRESIDUAL SOIL)
Mottled Reddish Brown, Silty CLAY, No odor, Dry, Hard,
(SAPROLITE)
21.0 ft 508.7—
_
— �\1
—
— —"
--:V
-V
.11�
1
Al‘
1,29.0ft
Orangish Brown to Tannish Brown, No odor, Dry, Minor oxide
stained seams (WEATHERED ROCK)
�\\\??`Top of Casing
500.7
Mottled Greenish Brown to Orangish Brown, No odor, Moist -, Hard,
Trace laminations, Oxide stained seams near horizontal
(SAPROLITE)
33.0 ft 496.7
-30—
— —
— —
\
- —.11i'
—35—\�f_
— —\'
—/2"ID0.01"
-
l� \
\�\1�i
I,\
\�t
. \
1(�40.0
Blueish Gray, No odor, Moist +, Meta-argillite parent (WEATHERED
ROCK)
ft 489.79�
—_
Slotted PVC
Screen
n40
—45—
End of Monitoring Well at 40.0 feet

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-216
�`� _ `� _ `i`_` 2704Suite Cherokee101 Farm Way PAGE 1 OF 3
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/09/2022 DATE COMPLETED 08/09/2022
CEC FIELD REPRESENTATIVE MWW REVIEWED BY MWW
GROUND ELEVATION 516.30 ft amsl CASING ELEVATION 518.84 ft amsl
LATITUDE 35.402552 LONGITUDE -80.122674
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Richy Lemire
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/09/2022 WELL STICKUP Stickup, 2.54 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Time of Drilling: NA Temporary Well: NA
= End of Drilling: NA Well Top of Casing : 09/08/2022 46.60 ft TOC/ Elev 472.24 ft amsl
Er After Drilling: NA
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
�45'
V
— _;
—
— —.
— —'
— —
—10—'
— —
—
r. :'
0.5n Brown, No odor, Dry, Soft to Medium Stiff, (TOPSOIL) 515.8—
—
— —
— —
— —
—
—507—
—
— —
— —
— —
— —
100
75
25
7-6-6-7
(12)
4-4-5-5
(9)
6-7-9-11
(16)
J
♦♦
� • • ;
♦• ♦.•
♦♦ •
•
♦♦ '
`♦♦:•
♦♦;,.
• ♦♦
• •
•• ♦ ::
• •♦ .• :
♦♦.
♦•
♦.•
. •
Reddish Brown, Silty CLAY, with Sand, Trace Weathered Rock
Fragments, No odor, Dry, Stiff, Brick fragments at 11' (FILL)
11.5 ft 504.8—
;'
Dark Gray, Silty CLAY, with Gravel -sized Rock Fragments, Trace
Organics, No odor, Moist, Stiff, (FILL)
15.0ft 501.3
15
.
Orangish Brown, Silty CLAY, No odor, Moist, Very Stiff, (FILL)
16.0 ft 500.3
• •
Dark Gray, SAND AND SILT, with Gravel, No odor, Moist to Wet,
Loose, Carbonaceous, Saturated between 20 and 22' (FILL)
I nnfin, icr1 Mov4 P �1

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-216
PAGE 2 OF 3
Badin Business Park
�`� `� `i` 2704Suite Cherokee101 Farm Way
_ _ _`
CLIENT
PROJECT
Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
Dark Gray, SAND AND SILT, with Gravel, No odor, Moist to Wet,
Loose, Carbonaceous, Saturated between 20 and 22' (FILL)
— -
Grout
-497
—20—
'
— —
100
6-3-6-5
— —
(9)
—25—;
4
2" ID Solid
25.5ft 490.8—
—
PVC Riser
—
Reddish Brown, Silty CLAY, No odor, Dry to Moist, Stiff, (RESIDUAL
100
5-6-5-8
SOIL)
— —
(11)
— —
—487-
-30—
J
31.oft 485.3
100
11-15-20-29
Blueish Gray, Silty CLAY, No odor, Dry, Hard to Very Hard, Minor
oxide stained seams at 70 to 80 degrees, Decrease weathering with
— —
(35)
depth (SAPROLITE)
— —
34.0 5 482.3
\ 1
Blueish Gray, No odor, Dry to Wet, Oxide stained seams near
vertical, Meta-argillite parent (WEATHERED ROCK)
— —
—35-1
100
32-50/0.4'
——'\\11l`
—\
- _Z.I.
—40—
—
AA
v
� 77—
100
21-50/0.5'
Bentonite
Chips
— —ANI
11
— \
Top of Casing
— —
.i'
—45—\�\i1i
100
19-50/0.5'
/rnntini Ind Aiov4 pnno\

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-216
PAGE 3 OF 3
Badin Business Park
`
\
CLIENT
PROJECT
`� `_\ 2704Suite Cherokee101 Farm Way
_ _ _` Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
— —.
11`,
Blueish Gray, No odor, Dry to Wet, Oxide stained seams near
f
vertical, Meta-argillite parent (WEATHERED ROCK)—
—
\111
I Sand
-50-\
I�I
—
al:
-
- -
4\\\\k
_
--\\ll`:
- -
-
2" ID 0.01"
—55--
11l'
— —
—
Slotted PVC
—1
�f
_
Screen
- _a,
s tip\59.5
ft 456.6-457-
- -
-
-60-
End of Monitoring Well at 59.5 feet
7
— -
-65-
- -
-447-
-70-
-75-

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-217
�`� _ `� _ _` `i` 2704Suite Cherokee101 Farm Way PAGE 1 OF 2
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/04/2022 DATE COMPLETED 08/05/2022
CEC FIELD REPRESENTATIVE AJK REVIEWED BY MWW
GROUND ELEVATION 522.05 ft amsl CASING ELEVATION 524.82 ft amsl
LATITUDE 35.412018 LONGITUDE -80.117352
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER John Eisenman
DRILLING METHOD 8-3/8-in Hollow Stem Auger/Air Rotary BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/04/2022 WELL STICKUP Stickup, 2.77 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 08/04/2022 20.40 ft bgs / Elev 501.65 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 10.55 ft TOC/ Elev 514.27 ft amsl
Er After Drilling: 08/05/2022 7.10 ft bgs / Elev 514.95 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
�45'
V
0.5ft Gravel surfacing (FILL) 521.6
— —
- -
— —
—513—
— —
— —
— —
_
66
8
--
--
--
1-2-1-3
(3)
1-3-5-7
(8)
7-6-9-11
(15)
5-7-2-1
(9)
2-11-13-5
(24)
1-1-50/0.4'
1 Grout
•
•
Mottled Brown to Black, Silty SAND AND CLAY, Moist - to Moist,
Loose to Soft, Odor (FILL)
6.0 ft 517.0_
5
— —
— —
—
— —
—10—
— —
— —
•
•
•
Black, Wet, Soft, Sandy sludge, liquid, Slimy + Odor -
carbonaceous, Lower 6" - 12.5'-13': gray slimy clay (FILL)
7
Top of Casing
13.0 ft 509.0
,
2" ID Solid
PVC Riser
s Chi Bentonite
p
—15—
Mottled Tan and Yellow, Silty CLAY, Moist, Hard, Ranges from CL to
weathered rock with depth. Black and rusty red redox features
within + cross -bedding (SAPROLITE)
16.0 ft /Partially weathered rock - Typ. meta-mudstone weathered. \ 506.0
\\
�.
1�N`
(WEATHERED ROCK)
17.on /Meta-mudstone - Typ. fracture pattern at 20'-21' (WEATHERED \ 60s.0
WIC
ROCK)
frnnfini icr4 Mov4 Pono1

Civil & Environmental Consultants, Inc. MONITORING
WELL NUMBER MW-217
PAGE 2 OF 2
Badin Business Park
�`� _ `� _ `_` \ 2704Suite Cherokee101 Farm Way
CLIENT
PROJECT
Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
— —7�
11'
Meta-mudstone - Typ. fracture pattern at 20'-21' (WEATHERED
— —
1 [
ROCK)
- -
� _
-503-
-20-\
1�l'
SZ
— —
-_
_
Sand
— -\�\`11\,
- -
—
—4
\ \1i1
2" ID 0.01"
—
--\����
\11??i,
— —
- -
_
-_
Slotted PVC
Screen
25
`\\1`l`25.0ft
497.0
-
,-,
End of Monitoring Well at 25.0 feet
- -
-493-
-30-
- -
-35-
- -
-483-
-40-
- -
-45-
- -

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-218
``� `� `_\ 2704 Cherokee Farm Way PAGE 1 OF 2
\Suite 101
_ _ _` Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/21/2022 DATE COMPLETED 06/21/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 560.88 ft amsl CASING ELEVATION 563.52 ft amsl
LATITUDE 35.410221 LONGITUDE -80.119946
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 06/21/2022 WELL STICKUP Stickup, 2.64 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Drilling: 06/21/2022 39.00 ft bgs / Elev 521.88 ft amsl Temporary Well: NA
End of Drilling: NA Well Top of Casing : 09/08/2022 30.04 ft TOC/ Elev 533.48 ft amsl
Er After Drilling: 06/22/2022 23.00 ft bgs / Elev 537.88 ft amsl
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
�45'
- 5
—10—
o.3ft Gray TOPSOIL, Some Gravel, Dry, (TOPSOIL) 550.5
— —
—551—
—
—
— —
—
75
10-14-23-33
(37)
I Grout
\
)\\\
,— _
Orangish Brown to Brown, Clayey SILT, Some Gravel, Dry, Gravel
decreases with depth (RESIDUAL SOIL)
13.0 ft 547.9—
—
..1 7
- -
Orange Brown, Fine Grained, Silty SAND, Dry, (RESIDUAL SOIL)
15.0ft 545.9—
—15
—
\
Orange Brown, Silty CLAY, Dry, Iron Oxide staining, Saprolitic
(SAPROLITE)
17.0 ft 543.9—
—
Orange Brown, Clayey SILT, Dry, Saprolitic (SAPROLITE)
frnnfini Ind Mcv+ Pono\

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-218
`� `_\ 2704Suite Cherokee101 Farm Way PAGE 2 OF 2
_ " _ _` Knoxville, TN 37920
`\
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
— —
Orange Brown, Clayey SILT, Dry, Saprolitic (SAPROLITE)
1s.zft saz.z
—
—
— —
—
— —
— —
—
—
— —
—
—53.-
—
— —
�21—
— —
— —
—
— —
100
100
100
100
100
100
100
13-23-29-49
(52)
16-15-50/0.
4
26-39-32-50
/0.3'
(71)
25-34-48-50
/0.3'
(82)
4-28-45-50/
0.3'
(73)
24-34-50/0.
3'
19-37-50/0.
4'
4--
2" ID Solid
PVC Riser
1 Bentonite
Chips
`19.oft
Orange Brown, Silty CLAY, Dry, Iron Oxide staining, Saprolitic
5479—
_
l
_—\(SAPROLITEI /
19.7ft Orar�e Brown, Clayey SILT, SaproliticjSAPROLITEJ 541.2
_ _
2o.oft Gray,PARTIALLY-WEATHERED ROCK, Dry,Iron Oxide Staining_ 540.9_541_
\�1NEATHERED ROCK) /
21.0ft Orange Brown, SiItyCLAY, Saprolitic (SAPROLITE) 539.9—
—
— —
_
Orange Brown, Silty CLAY, Dry, Saprolitic (SAPROLITE)
22.8 ft_ 538.1
_I
"%— Gray, PARTIALLY -WEATHERED ROCK, Dry, Iron Oxide Staining r--3zg
23.5 R / 537.4
—25—'1
r
OpNEATHERED ROCK) //r
\Oranq Brown, Clayey SILT, Dry, Saprolitic LSAPROLITEL /
Orange Brown, Silty CLAY, Dry, Transition Zone Material
(SAPROLITE)
6.0 ft 534.2—
—
`\Z
Gray, PARTIALLY -WEATHERED ROCK, Dry, Iron Oxide Staining
270ft y (WEATHERED ROCK 533.2—
_
— —1r
11(ropofCasing
k
Tan to Gray, PARTIALLY -WEATHERED ROCK, Dry, Iron Oxide
Staining (WEATHERED ROCK)
29.0 ft 531.2—
—
—30
\
1��`
\ 1
Tan to Gray, PARTIALLY -WEATHERED ROCK, Dry, (WEATHERED
ROCK)
31.0 ft 529.9—
—3s—�_
— —
— —N:
—40—!
--.--4
— —1
\\Z t'
\kx
11i1
\a
Ai '
���
('43.0ft
Gray, PARTIALLY -WEATHERED ROCK (WEATHERED ROCK)
517.2—
_
2"ID0.01"
Slotted PVC
Screen
—45—
End of Monitoring Well at 43.0 feet

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-219
\i `� `\ 2704 Cherokee Farm Way PAGE 1 OF 2
Suite 101
_ _ _`
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/20/2022 DATE COMPLETED 06/20/2022
CEC FIELD REPRESENTATIVE MWW REVIEWED BY MWW
GROUND ELEVATION 563.10 ft amsl CASING ELEVATION 565.80 ft amsl
LATITUDE 35.410681 LONGITUDE -80.119718
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 06/19/2022 WELL STICKUP Stickup, 2.70 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Time of Drilling: NA Temporary Well: NA
= End of Drilling: NA Well Top of Casing : 09/08/2022 32.19 ft TOC/ Elev 533.61 ft amsl
Er After Drilling: NA
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
�45'
v
_ _
t �:'.p.5n
Brown, No odor, Dry, Soft to Medium Stiff, Minor concrete and 562.E
— —
—
—
—
— —
— —
�54—
_ —
—
— —
— —
—
_
100
100
75
75
75
85
100
-3z
s- ( 22)
3-11-22-31
(33)
5-17-45-50/
0.3'
(62)
6-20-21-31
(41)
10-23-23-28
(46)
7-28-31-31
(59)
16-27-45-50
/0.3'
I
1 Grout
\asphalt fill (TOPSOIL) /
Reddish Brown, Clayey SILT, No odor, Dry, Medium Stiff,
(RESIDUAL SOIL)
3.0 ft 560.1
——
\
\
Reddish Brown, Silty CLAY, No odor, Dry, Stiff, (RESIDUAL SOIL)
ss6.1`
s
— —
\s.oft
`7
Mottled Reddish Brown and Tannish Brown, Silty CLAY, No odor,
Dry, Very Stiff to Hard, Minor oxide stained seams (SAPROLITE)
0 n 556.1
— —
— —
— —
— —
——
— —
—15—
— —
— —
\
\
\
\
Orangish Brown, Silty CLAY, No odor, Dry, Very Stiff to Hard, Minor
weathering seams (RESIDUAL SOIL)
11.5 ft 551.6
\
\
\\
\
\
Mottled Reddish Brown and Tannish Brown, Silty CLAY, No odor,
Dry, Hard, Minor weathering seams at 60 to 70 degrees
(SAPROLITE)
15.5 ft 547.6
\
\
\
Orangish Brown, Silty CLAY, No odor, Dry, Hard, Minor coarse sand-
sized oxides (SAPROLITE)
17.5 ft 545.6
/f nnfin, ic,1 Mov4 17ono1

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-219
2704Suite Cherokee101 Farm Way PAGE 2 OF 2
Knoxville, TN 37920
Park LLC PROJECT NAME Badin Business Park
``� `�
_
\
CLIENT
PROJECT
`_\
_ _`
Badin Business
NUMBER
300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
— —
Mottled Orangish Brown and Tannish Brown, Silty CLAY, No odor,
(72)
"
2" ID Solid
Dry to Moist, Hard to Very Hard, Remnant lamination (SAPROLITE)
— —
PVC Riser
— —
\
—544—
100
19-28-33-50
10.5 ft
543.6
/0.4'
—20—
Mottled Reddish Brown and Tannish Brown, Silty CLAY, No odor,
Dry, Hard to Very Hard, Increase in weathering at 20.5', block
— —
(61)
— —
\
texture at depth (SAPROLITE)
— —
100
12-27-34-50
/0.4'
— —
\
—
(61)
22.5 ft
540.6
100
15-50/0.3'
\
0.
Tannish Brown to Tannish Gray, No odor, Dry to Moist, Meta-argillite
r
parent (WEATHERED ROCK)
— —
\11i
100
32-50/0.2'
—25—\
1t
— —
,26.0
ft
Blueish Gray to Tannish Gray, No odor, Dry to Moist, Meta-argillite
537.1
— —
100
50/0.3'
—
-
��
parent (WEATHERED ROCK)
1
—
100
50/0.4'
— J\
—534—
'k1
Woo
of Casing
—30—
\ 1—
—
100
50/0.2'
i
\N
1 Bentonite
—
11i
- -
Chips
--:\\i,
Av
--
—35
�i,
— —
— —\�\
C
— —
I
-
�11i'
f
—
^4
Sand
2" ID 0.01"
—
At;
— —
Slotted PVC
Screen
—
�24—
�\``\1 -40.0
1i(e
ft
523.1
—
n40
End of Monitoring Well at 40.0 feet
——
—45—
— —

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER MW-220
�`� _ `� _ `_` \ 2704Suite Cherokee101 Farm Way PAGE 1 OF 1
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/16/2022 DATE COMPLETED 06/16/2022
CEC FIELD REPRESENTATIVE MWW REVIEWED BY MWW
GROUND ELEVATION 522.06 ft amsl CASING ELEVATION 524.59 ft amsl
LATITUDE 35.407700 LONGITUDE -80.120485
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD Sonic Drilling BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 6.00 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 06/16/2022 WELL STICKUP Stickup, 2.53 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Time of Drilling: NA Temporary Well: NA
= End of Drilling: NA Well Top of Casing : 09/08/2022 8.42 ft TOC/ Elev 516.17 ft amsl
Er After Drilling: NA
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
WELL DIAGRAM
u
—
' ♦♦ ,
• ♦• ,
• ♦♦ •
: ♦♦ •
:♦♦•
• ♦♦ '
•�♦•
•'♦♦
^'5.0ft
Tannish Brown, Gravel -Sized CONCRETE, No odor, Dry, (FILL)
517.1
—
—
—513—
— —
— —
— —
L
4
4 Grout
5
�•
y Tannish Brown, CONCRETE, No odor, Dry, (CONCRETE)
Top of Casing s1s.1—
—
— —
'
Tannish Brown to Dark Brown, Gravel -Sized CONCRETE, with Sand, and Clay,
No odor, Dry to Moist, (FILL)
10.0ft 512.E
10
—�
—
—
—15�(
1 �(
VA\11,'
\k,c(
`
�1i�
�\�,\16.0ft
---
Blueish Gray, No odor, Moist to Wet, Meta-argillite parent (WEATHERED ROCK)
506.1
_
4
2" ID 0.01"
Slotted PVC
Screen
End of Monitoring Well at 16.0 feet

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER PZ-18RD
�`� _ `� _ `i`_` 2704Suite Cherokee101 Farm Way PAGE 1 OF 2
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/08/2022 DATE COMPLETED 08/08/2022
CEC FIELD REPRESENTATIVE MWW REVIEWED BY MWW
GROUND ELEVATION 474.41 ft amsl CASING ELEVATION 476.94 ft amsl
LATITUDE 35.402194 LONGITUDE -80.123789
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Richy Lemire
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL 2" Monitoring Well Installed
BOREHOLE DIAMETER 8.38 in CORE SIZE NA
MONITORING EQUIPMENT NA OUTER CASING NA
WELL INSTALLED 08/08/2022 WELL STICKUP Stickup, 2.53 ft
DEVELOPMENT METHOD Surge with Submersible Pump WELL KEY NA
RESULTS NA NOTES
YIELD NA
WATER LEVELS
U At Time of Drilling: NA Temporary Well: NA
= End of Drilling: NA Well Top of Casing : 09/08/2022 10.63 ft TOC/ Elev 466.31 ft amsl
Er After Drilling: NA
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
�45'
V
—
— —
5
f� :'
0.5ft Brown, TOPSOIL, No odor, Dry, Soft to Medium Stiff, (TOPSOIL) 473.9—
—
—
— _
—465—
— —
— —
— —
0
100
2-4-1-2
(5)
4-4-14-23
(18)
4 Grout
;
•
•
•'
• .
•.
♦;
`
Reddish Brown, Silty CLAY, No odor, Dry, Medium Stiff, Minor
boulders at 5' bgs (FILL)
5.0 ft 469.4
— —
— —
—10—
Dark Gray, Silty CLAY, and Clay, Organic odor, Moist to Wet, Soft to
Medium Stiff, (ALLUVIAL SOIL)
V
Top of Casing
12.0 ft 462.4
Dark Gray, Silty CLAY, No odor, Dry, Medium Stiff, (RESIDUAL
SOIL)
14.0ft aso.a
—15—
Mottled Blueish Gray and Orangish Brown, Silty CLAY, No odor, Dry,
Hard, Remnant lamination (SAPROLITE)
2" ID Solid
PVC Riser
rr,,nfin, ior1 Mov4 Porrol

Civil & Environmental Consultants, Inc. MONITORING WELL NUMBER PZ-18RD
2704 Cherokee Farm Way PAGE 2 OF 2
101
Knoxville, TN 37920
Park LLC PROJECT NAME Badin Business Park
``� `�
_
\Suite
CLIENT
PROJECT
`_\
_ _`
Badin Business
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
WELL DIAGRAM
MATERIAL DESCRIPTION
——
\
Mottled Blueish Gray and Orangish Brown, Silty CLAY, No odor, Dry,
Hard, Remnant lamination (SAPROLITE)
— —
19.0
8
455.4
100
23-35-50/0.
a�
Blueish Gray, No odor, Dry to Wet, Minor oxide staining,
455
3
\�`y1�11
Metamudstone and meta-argillite parent (WEATHERED ROCK)
-20-\
111 ,
— —
- _A\`
1 Bentonite
\ 11t`
— —
Chips
—�
1
100
6-17-50/0.4'
-25-\
11�
Av,
- -
- J\\\{\
k1
100
8-15-50/0.5'
\ llt`
-445-
-30�
-
\ \�
— —
-
I Sand
I
— —
-4
2" ID 0.01"
- —
- -
100
17-50/0.5'
Slotted
Screen PVC
—
\11t`
--'i\k
=
1`
35.0
5439.4
35
End of Monitoring Well at 35.0 feet
-435-
-40-
-45-

Civil & Environmental Consultants, Inc. BORING NUMBER B-300
\i `� `i` 2704 Cherokee Farm Way PAGE 1 OF 3
Suite 101
_ _ _`
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/13/2022 DATE COMPLETED 09/15/2022
CEC FIELD REPRESENTATIVE MWW REVIEWED BY MWW
GROUND ELEVATION 560.16 ft amsl MONITORING EQUIPMENT NA
LATITUDE 35.409677 LONGITUDE -80.120359
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD Sonic Drilling BACKFILL Temporary Well Installed then Abandoned
BOREHOLE DIAMETER 6.00 in CORE SIZE NA
WATER LEVELS
U At Drilling: NA After Drilling: NA
= End of Drilling: NA .: Temporary Well: 08/17/2022 27.02 ft bgs / Elev 533.14 ft amsl
NOTES
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
JO;
Q
Q2« \Brown, TOPSOIL, Dry, Loose, (TOPSOIL) / 5F"4—
—
— —
— —
�5
— —
— —
_
— —
—
—541-
— —
Red to Yellowish Brown, Clayey SILT, with Gravel -sized Rock Fragments, Dry, Soft to Medium Stiff, (FILL)
z 0 ft 558.2
— 5 —
— —
— —
\
Dark Reddish Brown, Silty CLAY, Dry to Moist, Medium Stiff to Stiff, Minor sub -rounded coarse sand
(RESIDUAL SOIL)
4.5 ft _ 555.7
1
\
`
\9.0
Mottled Blueish Gray, Silty CLAY, Dry, Medium Stiff to Stiff, Faintly saprolitic (RESIDUAL SOIL)
ft 551.2
—10—
— —
— —
\
\
\
\
\
_ —
Reddish Brown, Silty CLAY, Dry, Medium Stiff to Stiff, Minor subangular pebbles, Trace gravel (RESIDUAL
SOIL)
13.0ft 547.2—
— —
—15—
— —
\
\
\
\
Mottled Orangish Brown, Dry to Moist -, Very Stiff to Hard, SAPROLITE logged as silty CLAY, Minor
subrounded sand and gravel increasing with depth (SAPROLITE)
18.0 ft 542.2
— —
-20—
\
\
\
_
Mottled Yellowish Brown and Reddish Brown, Dry, Very Stiff to Hard, SAPROLITE, Fine grained, Thinly
laminated, Decreasing reddish brown color with depth, softer from 25-27', (SAPROLITE)
frnnfini Ind Aiovf Pmnc\

Civil &
Environmental Consultants, Inc. BORING NUMBER B-300
Cherokee101 Farm Way PAGE 2 OF 3
TN 37920
Park LLC PROJECT NAME Badin Business Park
\tin`�
_
CLIENT
PROJECT
`_\ 2704Suite
_ _` Knoxville,
Badin Business
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
— —
-\
Mottled Yellowish Brown and Reddish Brown, Dry, Very Stiff to Hard, SAPROLITE, Fine grained, Thinly
laminated, Decreasing reddish brown color with depth, softer from 25-27', (SAPROLITE)
-
-
\
—
\
— —
\
— —
—25—
\
— —
\
V
—
\
29.05
531.2
_
_
Brown, Dry, Very Stiff to Hard, SAPROLITE, Increased silt and moisture content between 30' and 35',
—531—
—30—
\
Oxide staining starting at 30' - transitions from planar surfaces to nodules with depth, Laminations absent -
remnant fabric transitions to massive, 1 "-thick basal oxidation (SAPROLITE)
— —
\
— —
\
— —
— —
\
\
—35—
\
\
— —
\
— —
\
—521-
-40
\
— —
— —
\
�43.0 ft
517.2
—
— —
\�'1\ `\
``1
1
11�
Mottled Light Gray and Brown, Very Stiff to Very Hard, SAPROLITE AND PARTIALLY WEATHERED ROCK
TRANSITIONAL ZONE, Alternating layers of saprolite and partially weathered rock, Minor coarse sand-
sized oxidized nodules in a silty clay -sized matrix (WEATHERED ROCK)
— —
— —
—45-1
—\\Il\1
\ ��i1
— —
—
` ',.
— —
— J�
1��
—511—
-.
50.oft
—
510.2
50
" �,\
Blueish Gray, Very Hard, PARTIALLY WEATHERED ROCK, Remnant foliation (WEATHERED ROCK)
7rnnfini Ind Movf Pmnc1

Civil & Environmental Consultants, Inc. BORING NUMBER B-300
OF 3
`\
CLIENT
PROJECT
`� `_\ 2704Suite Cherokee101 Farm Way PAGE 3
_ _ _ ` Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME Badin Business Park
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
—
11`
Blueish Gray, Very Hard, PARTIALLY WEATHERED ROCK, Remnant foliation (WEATHERED ROCK)
-.52.0
ft 508.2
_
_
Blueish Gray, Very Hard, PARTIALLY WEATHERED ROCK TO FRACTURED ROCK, Meta-argillite parent,
— _'a(`
Trace pyrite mineralization on surface fractures (WEATHERED ROCK)
— —‘k
—55—\\\W
— —
Ili`
——\�\11i'
--
\ 11i1'
�o�
—60—\
\1i�
- -
-—�
--
-—A\
--
.1�1`
——.\\llh
- -
-65—�
1�1
- —
_
k(\\\I
- -AlA
�9�-70—
- -
— —Ak\
,\ \\\ 0'72.0
ft 488.2
_
_
End of Boring at 72.0 feet
— -
-75—
— —
—481-
-80—

Civil & Environmental Consultants, Inc. BORING NUMBER B-301
�`� `� `\ 2704Suite Cherokee101 Farm Way PAGE 1 OF 2
_ _ _`
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/21/2022 DATE COMPLETED 06/22/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 566.73 ft amsl MONITORING EQUIPMENT NA
LATITUDE 35.410127 LONGITUDE -80.120874
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL Temporary Well Installed then Abandoned
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
WATER LEVELS
U At Drilling: 06/22/2022 28.00 ft bgs / Elev 538.73 ft amsl After Drilling: NA
= End of Drilling: NA .: Temporary Well: 08/18/2022 24.50 ft bgs / Elev 542.23 ft amsl
NOTES
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
Orange Brown, Clayey SILT, with Clay, and Silt, Moist, Topsoil at surface (RESIDUAL SOIL)
4.0 ft 562.E
—
—
—557-
100
100
100
100
21-50/0.4'
50/0.2'
13-50/0.2'
50/0.2'
_
5
_
11�1
Iv
`
11i\
rr
`6.05
\(SAPROLITE) /
Gray, PARTIALLY -WEATHERED ROCK, Dry (WEATHERED ROCK)
560.7—
—
_
_
—10—
�1
1\
Gray, PARTIALLY -WEATHERED ROCK, Dry (WEATHERED ROCK)
11.0 ft 555.7—
-
—15—
_ _
Tan Orange, Clayey SILT, Dry to Moist, Hard to Very Hard, Saprolitic (SAPROLITE)
19.0 5 547.7
_
—20�\�
`
��
_ _
Light Gray to Dark Gray, Dry to Moist, PARTIALLY -WEATHERED ROCK, Metamudstone
(WEATHERED ROCK)
frnnfini!sari Alcor'. Pond

Civil & Environmental Consultants, Inc. BORING
NUMBER B-301
PAGE 2 OF 2
�`� _ `u _ `_` \ 2704Suite Cherokee101 Farm Way
CLIENT
PROJECT
Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME Badin Business Park
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
—
Light Gray to Dark Gray, Dry to Moist, PARTIALLY -WEATHERED ROCK, Metamudstone
— —
l,
(WEATHERED ROCK)
— —
— —‘k1(1
— —
0
50/0'
-25-'
\V .
-
_
;Ili`
--t
Al'\\\11
-537-
-30-\
11t,
— _'
— —
— JN\il\,
— —
\M35.0ft
531.E
35
End of Boring at 35.0 feet
-527-
-40-
-45-
- -
-517-
-50-

Civil & Environmental Consultants, Inc. BORING NUMBER B-302
�`� `� `\ 2704 Cherokee Farm Way PAGE 1 OF 2
m Suite 101
_ _ _`
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/22/2022 DATE COMPLETED 06/22/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 563.49 ft amsl MONITORING EQUIPMENT NA
LATITUDE 35.408729 LONGITUDE -80.120826
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL Temporary Well Installed then Abandoned
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
WATER LEVELS
U Er
At Drilling: 06/22/2022 27.80 ft bgs / Elev 535.69 ft amsl After Drilling: 06/22/2022 27.10 ft bgs / Elev 536.39 ft amsl
= End of Drilling: NA Temporary Well: 08/17/2022 30.30 ft bgs / Elev 533.19 ft amsl
NOTES
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
Orange to Orangish Brown, Sandy SILT, Some Gravel, Topsoil at surface (RESIDUAL
SOIL)
4.0 ft 559.5
—
100
75
100
100
4-4-5-8
(9)
7-8-8-10
(16)
25-41-50/0.4'
26-32-31-50/0
.3'
— 5 —
—
—10—
.5ft Reddish Brown, Sandy SILT, Dry, (RESIDUAL SOIL) 559.0
Reddish Brown, Clayey SILT, Dry, (RESIDUAL SOIL)
9.0 ft _ 554.5
Reddish Brown, Clayey SILT, Iron Oxide staining, Saprolitic, Rock fragments in top inch
(SAPROLITE)
11.0ft 552.5
— —
_ _
Orangish Brown, Clayey SILT, (RESIDUAL SOIL)
14.0 ft 549.5
I-15
14.5ft Orangish Brown, Clayey SILT, Saprolitic (SAPROLITE) 549.0
\,
;
Y
15.0ft Gray, Dry, Iron Oxide staining, PARTIALLY -WEATHERED ROCK (WEATHERED ROCK) 548.5
— —
544—
\\Orange,
CLAY, Transition -Zone Material (RESIDUAL SOIL)
16.0 ft 547.5
Orangish Brown, Clayey SILT, Dry, (RESIDUAL SOIL)
19.0 0 544.5
_
_ _
19.5ft Orangish Brown, Clayey SILT, Saprolitic (SAPROLITE) 544.0
1 V\20.ftft Gray, Dry, Iron Oxide staining, PARTIALLY -WEATHERED ROCK (WEATHERED ROCK) 543.5
—20
I Orangish Brown, Silty CLAY, Dry, Transition -Zone Material (RESIDUAL SOIL)
1rn.,finl!sari Nsavf D,nsa1

Civil
& Environmental Consultants, Inc. BORING NUMBER B-302
Cherokee101 Farm Way PAGE 2 OF 2
TN 37920
Park LLC PROJECT NAME Badin Business Park
`�
_
`\
CLIENT
PROJECT
`_\ 2704Suite
_ _`' Knoxville,
Badin Business
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
21.oft
Oran_gish Brown, Silty CLAY, Dry Transition -Zone Material jRESIDUAL SOIL)
542.5
(63)
—
— —
\
_
Orangish Brown, Silty CLAY, Increasing gray partially weathered rock fragments with depth
(RESIDUAL SOIL)
—
24.0 5
539.5
��\
_
Grayish Brown to Gray, PARTIALLY -WEATHERED ROCK (WEATHERED ROCK)
— —
100
19-50/0.4'
—25—\\\1}\�
\\\\`
--
- -A:
Al'1k(%f
—534—
100
37-50/0.3'
—30—\
\V
y
— —
— JA\
——\\\il\1
— —
—35
\ \\�
-
--\Ilk\
I„..,
-—
'Z 11
0.0 ft
523.5-524—
40
End of Boring at 40.0 feet
— -
-45—
-514-
-50—

Civil & Environmental Consultants, Inc. BORING NUMBER B-303
�`� `� `\ 2704 Cherokee Farm Way PAGE 1 OF 2
m
_ _ _` Suite 101
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/23/2022 DATE COMPLETED 06/23/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 559.16 ft amsl MONITORING EQUIPMENT NA
LATITUDE 35.408670 LONGITUDE -80.120971
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL Temporary Well Installed then Abandoned
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
WATER LEVELS
U Er
At Drilling: 06/23/2022 32.00 ft bgs / Elev 527.16 ft amsl After Drilling: 06/24/2022 24.80 ft bgs / Elev 534.36 ft amsl
= End of Drilling: NA Temporary Well: 08/17/2022 27.90 ft bgs / Elev 531.26 ft amsl
NOTES
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
Orangish Brown, Clayey SILT, Moist, Topsoil at surface (RESIDUAL SOIL)
4.0 ft 555.2
— —
— —
— —
— —
—
—
—540—
100
100
100
100
100
75
100
100
9-12-15-18
(27)
7-10-11-15
(21)
7-10-14-20
(24)
5-11-17-21
(28)
10-12-24-31
(36)
9-22-30-35
(52)
8-37-50/0.2'
22-42-50
(92)
—
— 5 —
— —
_ _
Orangish Brown, Clayey SILT, Dry, Iron Oxide staining, Saprolitic (SAPROLITE)
9.0 ft 550.2
—10—
9.5ft Orange, Silty CLAY, Dry, Transition -Zone Material (RESIDUAL SOIL) 549.7-55°—
Orangish Brown, Clayey SILT, Dry, Iron Oxide staining, Saprolitic (SAPROLITE)
11.8 ft 547.4
'120ft 5472-
Silty CLAY, Dry, Transition Material SOIL)
—15—
— —
—20—
\Orange, -Zone (RESIDUAL /
Orangish Brown, Clayey SILT, Dry, Saprolitic (SAPROLITE)
1 rnntim icd Alcor'. D,nc1

Civil & Environmental Consultants, Inc. BORING NUMBER B-303
�`� _ `� _ `_` \ 2704Suite Cherokee101 Farm Way PAGE 2 OF 2
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
-25-
- -
— —
Orangish Brown, Clayey SILT, Dry, Saprolitic (SAPROLITE)
7
533.3
- -
—
- -
-530-
— —
-
— —
- -
_ _
— -
-510-
100
100
100
100
100
100
100
100
15-50/0.4'
24-50/0.4'
27-28-50
(78)
24-45-50
(95)
46-50/0.3'
44-50/0.2'
25-50/0.3'
50/0.3'
-\ Orange, CLAY, Dry, Transition -Zone Material (RESIDUAL SOIL' J 533
Orangish Brown, Clayey SILT, Dry, Iron Oxide staining, Saprolitic (SAPROLITE)
28.5 ft 530.7
\
_ _
Reddish Brown, Silty CLAY, Dry, Transition -Zone Material (RESIDUAL SOIL)
30.05 529.2
-30
_ _
Orangish Brown, Clayey SILT, Dry, Iron Oxide staining, Saprolitic (SAPROLITE)
32.0 ft_ V 527.2
_
v 'I
\��
_ _ _
D PARTIALLY -WEATHERED ROCK WEATHERED ROCK 526.8—
32.4 ft �/ ry,
Gra
,
Orangish Brown, Clayey SILT, Wet, Saprolitic (SAPROLITE)
34.0 5 525.2
-35-\
- -I.
_ _,
- _\lk\
40
`\\t
-A,
,,,-
`M&-520-
T.),40.0
\'
{\i
f
_ —
Gray, Wet, PARTIALLY -WEATHERED ROCK (WEATHERED ROCK)
ft 519.2
-45-
-
-50-
_ _
End of Boring at 40.0 feet

Civil & Environmental Consultants, Inc. BORING NUMBER B-304
`m `� `�', 2704 Cherokee Farm Way PAGE 1 OF 2
_ _ _
` m Suite 101
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 08/01/2022 DATE COMPLETED 08/01/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 546.78 ft amsl MONITORING EQUIPMENT NA
LATITUDE 35.408132 LONGITUDE -80.121172
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Zach Thompson
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL Temporary Well Installed then Abandoned
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
WATER LEVELS
At Drilling: 08/01/2022 25.50 ft bgs / Elev 521.28 ft amsl After Drilling: NA
= End of Drilling: NA Temporary Well: 08/17/2022 23.60 ft bgs / Elev 523.18 ft amsl
NOTES
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
.I 3
Orange, Silty SAND, with Cobbles, Dry, Topsoil at surface (RESIDUAL SOIL)
5.0 8541.8—
—
— —
—537—
—527-
100
50
100
100
100
100
100
100
27-29-50
(79)
50/0.4'
50
19-50
10-50
40-50/0.4'
45-50/0.3'
31-50
5
— —
—10—
—15-
-20—
Orangish Brown, Clayey SILT, Dry, Iron Oxide staining, Saprolitic (SAPROLITE)
f(`nnfini Ind Movf Pono1

Civil & Environmental Consultants, Inc. BORING NUMBER B-304
2704Suite Cherokee101 Farm Way PAGE 2 OF 2
Knoxville, TN 37920
Park LLC PROJECT NAME Badin Business Park
`� _ `u _ `_` \
CLIENT
PROJECT
Badin Business
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
Orangish Brown, Clayey SILT, Dry, Iron Oxide staining, Saprolitic (SAPROLITE)
— —
75
32-35-50/0.2'
V
80
50
25.O ft
521.8-
-
25
N. N,
\ 1�}�
Gray, Dry, PARTIALLY WEATHERED ROCK (WEATHERED ROCK)
— —
75
28-50/0.3'
Ak
-
100
50
—30—V
`\ll\ l
_ 111111
1hA
�1�
100
44-50/0.3'
\
4,„
1
— —
--Zt.
—35—\
1�
--\\�,
Ai:_`
\111`
�•
0.0 ft
506.8-507—
--
40
End of Boring at 40.0 feet
—45—
—497—
—50—

Civil & Environmental Consultants, Inc. BORING NUMBER B-305
`m `� `�, 2704 Cherokee Farm Way PAGE 1 OF 2
_ _ _
` m ' Suite 101
Knoxville, TN 37920
CLIENT Badin Business Park LLC PROJECT NAME Badin Business Park
PROJECT NUMBER 300-226 PROJECT LOCATION Badin, NC
DATE STARTED 06/23/2022 DATE COMPLETED 06/23/2022
CEC FIELD REPRESENTATIVE DC REVIEWED BY MWW
GROUND ELEVATION 561.13 ft amsl MONITORING EQUIPMENT NA
LATITUDE 35.408731 LONGITUDE -80.121533
DRILLING CONTRACTOR SAEDACCO, Inc. DRILLER Stefan Smith
DRILLING METHOD 8-1/4-in Hollow Stem Auger + SPT BACKFILL Temporary Well Installed then Abandoned
BOREHOLE DIAMETER 8.25 in CORE SIZE NA
WATER LEVELS
At Drilling: 06/23/2022 37.50 ft bgs / Elev 523.63 ft amsl After Drilling: 06/24/2022 24.80 ft bgs / Elev 536.33 ft amsl
= End of Drilling: NA Temporary Well: 08/17/2022 29.70 ft bgs / Elev 531.43 ft amsl
NOTES
NA - Not Available; bgs - below ground surface; amsl - above mean sea level
DEPTH
(ft)
GRAPHIC
LOG
MATERIAL DESCRIPTION
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
— 5 —
— —
—10—
.
19.2
Reddish Brown, Sandy SILT, Dry, Topsoil at surface (RESIDUAL SOIL)
ft 551.9-552—
— —
_ _
_ _
—542-
— —
75
100
100
50
8-10-14-17
(24)
12-14-20-26
(34)
2-4-7-8
(11)
6-11-14-17
(25)
Orangish Brown, Clayey SILT, Dry, Iron Oxide staining, Saprolitic (SAPROLITE)
14.0 ft 547.1
—15—
— —
-20—
14.5ft Reddish Brown, Sandy SILT, (RESIDUAL SOIL) 546.6
Reddish Brown to Orangish Brown, Clayey SILT, Moist, Iron Oxide staining, Saprolitic
(SAPROLITE)
Irnnfin1 Ind Movf Pono1

Civil & Environmental Consultants, Inc. BORING
NUMBER B-305
PAGE 2 OF 2
Park
�`� _ `u _ `_` \ 2704Suite Cherokee101 Farm Way
CLIENT
PROJECT
Knoxville, TN 37920
Badin Business Park LLC PROJECT NAME Badin Business
NUMBER 300-226 PROJECT LOCATION Badin, NC
DEPTH
(ft)
GRAPHIC
LOG
m
D
r
0
m
co
n
7J
—1
z
ELEVATION
(ft)
Recovery %
BLOW COUNTS
(N VALUES)
-25-
Reddish Brown to Orangish Brown, Clayey SILT, Moist, Iron Oxide staining, Saprolitic
(SAPROLITE)
7
�5.4 ft
535.7-
— —
-
— —
-532-
_ _
—
— —
�22-
- -
— -
-512-
90
100
100
100
12-25-50
(75)
11-25-33-50/0.
3'
(58)
13-29-50/0.4'
17-27-50/0.3'
`\��,2s.oft
Gray, Moist -, PARTIALLY WEATHERED ROCK (WEATHERED ROCK)
_
_
535.1
530.3
—
— —
-30-
Orangish Brown, Clayey SILT, Moist -, Iron Oxide staining, Saprolitic (SAPROLITE)
V
I 30.8 ft
-
a,.aft-----\Orang, CLAY, Moist-, Transition -Zone MaterialjRESIDUAL SOILL
Orangish Brown to Orange, Clayey SILT, and Silty CLAY (RESIDUAL SOIL)
34.0 ft
l
€.301-
527.1
\\\347ft
Orangish Brown, CLAY, Dry, Transition -Zone Material (RESIDUAL SOIL)
szs.s—
-35_.
— —�����
--��f
--\�111
-40
\
�\�111v
%(\
\\
Gray, Dry to Wet, Iron Oxide staining, PARTIALLY WEATHERED ROCK (WEATHERED
( ROCK)
�
- 1.0 ft
520.1
-
-45-
- -
-50-
End of Boring at 41.0 feet

Hydrogeological Conceptual Site Model Update — Badin Business Park
Attachment B 2022 Monitoring Well Survey and Construction Details
EHS Support LLC

Attachment B
2022 Monitoring Well Survey and Construction Details
Hydrogeological Conceptual Site Model Update
Alcoa Badin Works
Badin, North Carolina
Location
North Carolina State Plane
(NAD83)
Date
Installed
Ground
Elevation
(NAV88 - ft)
Top of Casing
Elevation
(NAV88- ft)
Material Type and
Size
Depth of
Well
(ft)
Bottom of
Hole Elevation
(ft)
Screen
Length
(ft)
Depth
Elevation
Top
(ft)
Bottom
(ft)
Top
(NAVD88 - ft)
Bottom
(NAVD88 - ft)
Northing
Easting
B-300
605912.22
1666180.38
--
560.16
--
-
--
--
B-301
606077.86
1666028.95
--
566.73
--
--
--
--
--
--
--
--
--
B-302
605659.01
1666037.25
--
563.49
--
--
--
--
--
--
--
--
--
B-303
605547.95
1665994.00
--
559.16
--
--
--
--
--
--
--
--
--
B-305
605572.14
1665826.83
--
561.13
--
--
--
--
--
--
--
--
--
MW200
607450.13
1667258.64
8/3/2022
530.35
533.11
2-inch diameter PVC
41.5
488.9
10
31.5
41.5
498.9
488.9
MW201
607025.48
1667544.53
8/4/2022
518.05
521.02
2-inch diameter PVC
41.0
477.1
10
31.0
41.0
487.1
477.1
MW202
606606.87
1667742.26
8/3/2022
515.92
515.63
2-inch diameter PVC
42.0
473.9
10
32.0
42.0
483.9
473.9
MW203
606114.16
1667729.12
8/2/2022
524.78
524.42
2-inch diameter PVC
42.0
482.8
10
32.0
42.0
492.8
482.8
MW204
605752.38
1667637.74
8/1/2022
520.98
520.67
2-inch diameter PVC
41.5
479.5
10
31.5
41.5
489.5
479.5
MW205
605403.63
1667456.53
8/4/2022
521.08
523.85
2-inch diameter PVC
31.0
490.1
10
21.0
31.0
500.1
490.1
MW206
604969.97
1667700.33
6/29/2022
512.25
511.87
2-inch diameter PVC
35.0
477.3
10
25.0
35.0
487.3
477.3
MW207
604561.78
1668227.00
6/27/2022
512.81
512.34
2-inch diameter PVC
15.0
497.8
5
10.0
15.0
502.8
497.8
MW208
604588.71
1667230.57
8/5/2022
516.29
518.76
2-inch diameter PVC
27.6
488.7
5
22.6
27.6
493.7
488.7
MW209
604937.32
1666835.66
8/4/2022
521.86
524.74
2-inch diameter PVC
52.0
469.9
10
42.0
52.0
479.9
469.9
MW210
604088.89
1666650.73
8/3/2022
521.78
524.76
2-inch diameter PVC
30.0
491.8
10
20.0
30.0
501.8
491.8
MW211
604113.58
1665700.61
8/2/2022
523.16
525.18
2-inch diameter PVC
30.0
493.2
5
25.0
30.0
498.2
493.2
MW212
MW213
603626.95
1665868.12
8/2/2022
517.83
520.31
2-inch diameter PVC
35.0
482.8
5
30.0
35.0
487.8
482.8
602992.07
1666448.96
8/4/2022
517.79
520.46
2-inch diameter PVC
78.5
439.3
20.0
58.5
78.5
459.3
439.3
MW214
602223.77
1667887.88
6/28/2022
495.71
495.35
2-inch diameter PVC
35.0
460.7
5
30.0
35.0
465.7
460.7
MW215
604050.81
1664883.72
8/8/2022
529.72
532.70
2-inch diameter PVC
40.0
489.7
5
35.0
40.0
494.7
489.7
MW216
603327.28
1665460.95
8/9/2022
516.30
518.84
2-inch diameter PVC
59.5
456.8
9.5
50.0
59.5
466.3
456.8
MW217
606754.38
1667085.60
8/4/2022
522.05
524.82
2-inch diameter PVC
25.0
497.1
5
20.0
25.0
502.1
497.1
MW218
606108.94
1666305.64
6/21/2022
560.88
563.52
2-inch diameter PVC
43.0
517.9
5
38.0
43.0
522.9
517.9
MW219
606275.65
1666375.59
6/19/2022
563.10
565.80
2-inch diameter PVC
40.0
523.1
5
35.0
40.0
528.1
523.1
MW220
605193.28
1666134.67
6/16/2022
522.06
524.59
2-inch diameter PVC
16.0
506.1
5
11.0
16.0
511.1
506.1
PZ-18RD
603200.77
1665127.62
8/8/2022
474.41
476.94
2-inch diameter PVC
35.0
439.4
5
30.0
35.0
444.4
439.4
Notes:
-- = not relevant
ft = feet
NAD83 = North American Datum of 1983
NAVD88 = North American Vertical Datum of 1988
PVC = polyvinyl chloride
EHS
Support
Page 1 of 1

Hydrogeological Conceptual Site Model Update — Badin Business Park
Attachment C 2022 Soil Physical Properties Data
EHS Support LLC

INTEGRATED GEOSCIENCES LABORATORIES, LLC
Environmental * Geotechnical * Core Analysis
6016 Centralcrest Street • Houston, Texas 77092
Telephone [phone] • Fax [phone]
July 20, 2022
Michael Worden,
Project Manager,
Civil & Environnemental Consultants, Inc.
3701 Arco Corporate Dr Suite # 400,
Charlotte, NC 28273.
Re: IGS Labs File No: 2207-131
Project Name: Alcoa Worden Installation
Project Number: 300-226-0017
Site Location: Badin, NC
Subject: Final Report: Hydraulic Conductivity Package -(API RP40, ASTM D2216, EPA
9100), and Effective (Drainage) Porosity — (Mod. ASTM D425, API RP40).
Dear Michael Worden,
Please find enclosed report for Physical Properties analyses conducted upon soil samples received from
your "Alcoa Worden Installation" project. All analyses were performed by applicable ASTM, EPA, or API
methodologies. The sample is currently in storage and will be retained for thirty days past the completion of
testing at no charge. Please note that the sample will be disposed of at that time. You may contact me
regarding storage, disposal, or return of the sample.
Integrated Geosciences Laboratories appreciate the opportunity to be of service. If you have any questions
or require additional information, please contact me or Emeka Anazodo at [phone].
Sincerely,
Integrated Geosciences Laboratories, LLC.
Adebowale Ogunsola

Integrated Geosciences Laboratories, LLC.
Project Name: Alcoa Worden Installation IGS Labs File No: 2207-131
Project Number: 300-226-0017 Client: CEC, Inc.
Site Location: Badin, NC Date Received: 7/15/2022
TEST PROGRAM - 20220715
Serial
Number
Sample ID
Date; Time
Sampled
Depth
(feet)
Matix
Type
Hydraulic
Conductivity Pkg
API RP40, ASTM D2216,
API 9100 RP40
Effective Porosity
mod. ASTM D425
Comments
Date Received: 20220715
1
MW-218 5-7
6/21/2022; 07:45
5-7
Soil
X
X
1- [2" X 30" shelby tube]
2
MW-218 15-17
6/21/2022; 08:15
15-17
Soil
X
X
1- [2" X 30" shelbytube]; 1 Gallon Ziplock
TOTAL
2
2
2
Laboratory Test Program Notes
days.
1. Standard TAT for basic analysis is 10-15 business
Rev. 1.0 20140226
CLIENT CONFIDENTIAL

Integrated Geosciences Laboratories, LLC
PHYSICAL PROPERTIES DATA - DRAINAGE (EFFECTIVE) POROSITY
IGS Labs File No: 2207-131 Project Name: Alcoa Worden Installation
Client: CEC, Inc. Project No: 300-226-0017
Report Date: 7/20/2022 Site Location: Badin, NC
API RP 40 /
METHODS: ASTM D2216 API RP40 Mod. ASTM D425 Mod. ASTM D425
SAMPLE
ID.
IGS Labs
ID
DEPTH,
ft.
SAMPLE
ORIENTATION
(1)
ANALYSIS
DATE
MOISTURE
CONTENT,
% weight
DENSITY
BULK,
g/cc
TOTAL
POROSITY (2),
%Vb
EFFECTIVE
POROSITY,
%Vb
MW-218 5-7
1
5-7
V
20220718
19.7
1.38
47.0
17.23
MW-218 15-17
2
15-17
R
20220718
29.1
1.30
46.8
16.57

Integrated Geosciences Laboratories, LLC
PHYSICAL PROPERTIES DATA - HYDRAULIC CONDUCTIVITY PACKAGE
IGS Labs File No: 2207-131 Project Name:
Client: CEC, Inc. Project No:
Report Date: 07/20/22 Site Location:
API RP 40 /
METHODS: ASTM D2216 API RP 40 API RP 40 API RP 40
Alcoa Worden Installation
300-226-0017
Badin, NC
API RP 40; EPA 9100
25 PSI CONFINING STRESS
SAMPLE
ID.
IGS Labs
ID
DEPTH,
ft.
SAMPLE
ORIENTATION
(1)
MOISTURE
CONTENT,
% weight
DENSITY
POROSITY, %Vb (2)
TOTAL PORE FLUID
SATURATIONS (3),
% Pv
EFFECTIVE (4,5)
PERMEABILITY TO WATER,
millidarcy
HYDRAULIC
CONDUCTIVITY (4,5),
cm/s
DRY BULK,
g/cc
GRAIN,
g/cc
TOTAL
AIR -FILLED
MW-218 5-7
1
5-7
V
18.9
1.41
2.72
48.4
21.8
54.9
0.448
4.28E-07
MW-218 15-17
2
15-17
R
28.1
1.40
2.78
49.7
10.4
79.1
3.58
3.38E-06
(1) Sample Orientation: H = horizontal; V = vertical; R = remold
(2) Total Porosity = all non & interconnected pore channels; Air Filled = pore channels not occupied by pore fluids.
(3) Fluid density used to calculate pore fluid saturations: Water = 0.9996 g/cc.
(4) Effective (Native) = With as -received pore fluids in place.
(5) Permeability to water and hydraulic conductivity measured at saturated conditions.
Vb = Bulk Volume, cc; Pv = Pore Volume, cc; ND = Not Detected
Water = filtered Laboratory Fresh (tap) or Site water.

INTEGRATED GEOSCIENCES LABORATORIES, LLC CHAIN OF CUSTODY
(formerly PTS Laboratories, Inc.)
COMPANY:
ADDRESS:
PROJECT MANAGER NAME:
11\i.• Ncrac.,
PROJECT NAME:
A1 ctr, Vc11 1 ,514 )1e, \
CITY ZIP CODE
�:.„ (\-,c.rvt4c1 N (
2ei')5
EMAIL PHONE #
it. � 1)(1 16I y t
t�lWOr�C,� cc(cUr''•
PROJECT NUMBER:
GG—Z2c GCS
SITE LOCATION:
AMPLER SIGNATURE: F- L�
SAMPLE ID
ti1W��,11 )
DATE
(,)21/11
TIME
C?LI`,
DEPTH, FEET
I`;-1)
NUMBER OF SAMPLES
SOIL PROPERTIES PACKAGE
0 u
G
0
0
1
0
0
z
0
u
0
1
ANALYSIS REQUEST
PAGE OF
PORE FLUID SATURATION PACKAGE
TCEQ/TNRCC PROPERTIES PACKAGE
CAPILLARITY PACKAGE
FLUID PROPERTIES PACKAGE
CORE PHOTOGRAPHY
VAPOR TRANSPORT PACKAGE
POROSITY: TOTAL, AIR -FILLED, WATER -FILLED
PROSITY: EFFECTIVE, ASTM 0425M
BULK DENSITY (DRY), API RP40 or ASTM D2937
AIR PERMEABILITY, API RP40
0
0
Q
8
u
z
0
u
0
1
0
0
a,
0
o`
0
0
m
ZE-
0
z
OC: WALK LEY -BLACK
ATTERBERG LIMITS, ASTM D4318
APOR INTRUSION PACKAGE
FREE PRODUCT MOBILITY PACKAGE
RESIDUAL SATURATION BY WATER DRIVE
IPO #:
BILLING ADDRESS:
BILLING EMAIL: r"'1Jclj1,„
BILLING CONTACT: 1hiki Wcr i,.
BILLING PHONE #: -Zlh - 7hy L
TURNAROUND TIME
24 HOURS
72 HOURS
OTHERS:
'NORMAL
5 DAYS
SAMPLE INTEGRITY (CHECK):
INTACT: TEMP (F)
IGL QUOTE NO/DATE
IGL FILE NO
?v7 —
COMMENTS
tYySe I
Ir,c^ ICI 11)'
1
1r RELINQUISHED)
Il BY
+-JGr,MI� c Ili
COMPANY
(r=L
DATE
�i�11112 i
TIME
2: RECEIVED BY:
COMPANY
16,5 La
7%j sDATE
2- 2'
1. RELINQUISHED BY
COMPANY
TIME
L>t)
INTEGRATED GEOSCIENCIES LABORATORIES, LLC * 6016 CENTRALCREST STREET, HOUSTON, TEXAS 77092 * PHONE [phone] * WEBSITE www.igslaboratories.com
2: RECEIVED BY
COMPANY
DATE
TIME
DATE
TIME

INTEGRATED GEOSCIENCES LABORATORIES, LLC
Environmental * Geotechnical * Core Analysis
6016 Centralcrest Street • Houston, Texas 77092
Telephone [phone] • Fax [phone]
August 31, 2022
Michael Worden,
Project Manager,
Civil & Environnemental Consultants, Inc.
3701 Arco Corporate Dr Suite # 400,
Charlotte, NC 28273.
Re: IGS Labs File No: 2208-155
Project Name: Alcoa Well Installation
Project Number: 300-226-0017
Site Location: Badin, NC
Subject: Final Report: Hydraulic Conductivity Package -(API RP40, ASTM D2216, EPA
9100), and Effective (Drainage) Porosity — (Mod. ASTM D425, API RP40).
Dear Michael Worden,
Please find enclosed report for Physical Properties analyses conducted upon soil samples received from
your "Alcoa Well Installation" project. All analyses were performed by applicable ASTM, EPA, or API
methodologies. The sample is currently in storage and will be retained for thirty days past the completion of
testing at no charge. Please note that the sample will be disposed of at that time. You may contact me
regarding storage, disposal, or return of the sample.
Integrated Geosciences Laboratories appreciate the opportunity to be of service. If you have any questions
or require additional information, please contact me or Emeka Anazodo at [phone].
Sincerely,
Integrated Geosciences Laboratories, LLC.
Adebowale Ogunsola

Integrated Geosciences Laboratories, LLC.
Project Name: Alcoa Well Installation IGS Labs File No: 2208-155
Project Number: 300-226-0017 Client: CEC, Inc.
Site Location: Badin, NC Date Received: 8/25/2022
TEST PROGRAM - 20220825
Serial
Number
Sample ID
Date; Time
Sampled
Depth
(feet)
Matix
Type
Hydraulic
Conductivity Pkg
API RP40, ASTM D2216, API
9100 RP40
Effective Porosity
mod. ASTM D425
Comments
Date Received: 20220825
1
MW-211
8/3/2022; 0740
9-13
Soil
X
X
1 [2" X 30" shelby tube]; 1 Gallon
Ziplock
2
MW-203
8/2/2022; 0800
5-7
Soil
X
X
1- [2" X 30" shelby tube]
3
MW-204
8/1/2022; 0915
5-9
Soil
X
X
1 [2" X 30" shelby tube]; 1 Gallon
Ziplock
4
MW-212
8/2/2022; 0750
7-9
Soil
X
X
1- [2" X 30" shelby tube];
5
MW-201
8/4/2022; 1315
5-7
Soil
X
X
1 [2" X 30" shelby tube]; 1 Gallon
Ziplock
6
MW-208
8/5/2022; 1200
7-9
Soil
X
X
1- [2" X 30" shelby tube]
7
MW-201
8/4/2022; 1325
8-9
Soil
X
X
1- [2" X 30" shelby tube]
TOTAL
7
7
7
Laboratory Test Program Notes
1. Standard TAT for basic analysis is 10-15 business days.
Rev. 1.0 20140226
CLIENT CONFIDENTIAL

Integrated Geosciences Laboratories, LLC
PHYSICAL PROPERTIES DATA - HYDRAULIC CONDUCTIVITY PACKAGE
IGS Labs File No: 2208-155 Project Name:
Client: CEC Project No:
Report Date: 08/31/22 Site Location:
API RP 40 /
METHODS: ASTM D2216 API RP 40 API RP 40 API RP 40
Alcoa Well Installation
300-226-0017
Badin, NC
API RP 40; EPA 9100
25 PSI CONFINING STRESS
SAMPLE
ID.
IGS Labs
ID
DEPTH,
ft.
SAMPLE
ORIENTATION
(1)
MOISTURE
CONTENT,
% weight
DENSITY
POROSITY, %Vb (2)
TOTAL PORE FLUID
SATURATIONS (3),
% Pv
EFFECTIVE (4,5)
PERMEABILITY TO WATER,
millidarcy
HYDRAULIC
CONDUCTIVITY (4,5),
cm/s
DRY BULK,
g/cc
GRAIN,
g/cc
TOTAL
AIR -FILLED
MW-211
1
9-13
R
17.8
1.43
2.74
47.9
22.4
53.2
0.332
3.18E-07
MW-203
2
5-7
V
28.7
1.40
2.77
49.5
9.5
80.9
0.211
2.02E-07
MW-204
3
5-9
R
17.9
1.43
2.77
48.4
22.8
52.9
1.55
1.49E-06
MW-212
4
7-9
V
26.3
1.48
2.76
46.6
7.8
83.3
0.531
5.04E-07
MW-201
5
5-7
V
20.0
1.36
2.77
50.9
23.6
53.6
1.60
1.55E-06
MW-208
6
7-9
V
20.4
1.31
2.77
52.6
25.9
50.8
0.245
2.36E-07
MW-201
7
8-9
V
17.3
1.42
2.75
48.4
23.8
50.8
0.164
1.58E-07
(1) Sample Orientation: H = horizontal; V = vertical; R = remold
(2) Total Porosity = all non & interconnected pore channels; Air Filled = pore channels not occupied by pore fluids.
(3) Fluid density used to calculate pore fluid saturations: Water = 0.9996 g/cc.
(4) Effective (Native) = With as -received pore fluids in place.
(5) Permeability to water and hydraulic conductivity measured at saturated conditions.
Vb = Bulk Volume, cc; Pv = Pore Volume, cc; ND = Not Detected
Water = filtered Laboratory Fresh (tap) or Site water.

Integrated Geosciences Laboratories, LLC
PHYSICAL PROPERTIES DATA - DRAINAGE (EFFECTIVE) POROSITY
IGS Labs File No: 2208-155 Project Name: Alcoa Well Installation
Client: CEC, Inc. Project No: 300-226-0017
Report Date: 8/29/2022 Site Location: Badin, NC
API RP 40 /
METHODS: ASTM D2216 API RP40 Mod. ASTM D425 Mod. ASTM D425
SAMPLE
ID.
IGS Labs
ID
DEPTH,
ft.
SAMPLE
ORIENTATION
(1)
ANALYSIS
DATE
MOISTURE
CONTENT,
% weight
DENSITY
BULK,
g/cc
TOTAL
POROSITY (2),
%Vb
EFFECTIVE
POROSITY,
%Vb
MW-211
1
9-11
R
20220826
17.9
1.45
48.0
18.61
MW-203
2
5-7
V
20220826
29.1
1.42
46.6
11.57
MW-204
3
7-9
R
20220826
17.4
1.41
52.0
22.21
MW-212
4
7-9
V
20220826
26.4
1.45
49.0
14.56
MW-201
5
5-7
V
20220826
20.2
1.36
50.7
20.93
MW-208
6
7-9
V
20220826
20.2
1.31
52.8
20.62
MW-201
7
8-9
V
20220826
17.5
1.41
48.0
17.11

INTEGRATED GEOSCIENCES LABORATORIES, LLC CHAIN OF CUSTODY PAGE j OF
(formerly PTS Laboratories, Inc.)
ANALYSIS REQUEST
IPO #:
COMPANY: - _ r
'— `
NUMBER OF SAMPLES
SOIL PROPERTIES PACKAGE
HYDRAULIC CONDUCTIVITY/HYDRAULIC CONDUCTIVITY PACKA(
PORE FLUID SATURATION PACKAGE
TCEO/TNRCC PROPERTIES PACKAGE
CAPILLARITY PACKAGE
FLUID PROPERTIES PACKAGE
CORE PHOTOGRAPHY
VAPOR TRANSPORT PACKAGE
POROSITY: TOTAL, AIR -FILLED, WATER -FILLED
PROSITY: EFFECTIVE, ASTM D425M
SPECIFIC GRAVITY, ASTM D854
BULK DENSITY (DRY), API RP40 or ASTM D2937
AIR PERMEABILITY, API RP40
HYDRAULIC CONDUCTIVITY, EPA 9100/API RP40 OR ASTM D5084
GRAIN SIZE DISTRIBUTION, ASTM D422 or D6913 or D44641
TOC: WALKLEY-BLACK
ATTERBERG LIMITS, ASTM D4318
VAPOR INTRUSION PACKAGE
FREE PRODUCT MOBILITY PACKAGE
RESIDUAL SATURATION BY WATER DRIVE
BILLING ADDRESS:
ADDRESS: CITY ZIP CODE
/!v I At:C ccreef'+4 ` 4 „.. ( }.0 IC t(� w
‘‘.. (4LU
BILLING EMAIL: k
BILLING CONTACT: /h,ti, e.1L.,,
PROJECT MANAGER NAME: EMAIL PHONE #
\� n1, )-Zl`1�24111
KC :JC.1"1 !s'0.)�r�fwiCUCC.CCPs,
BILLING PHONE #A(, j -Zl°k - 1., Lk 1
TURNAROUND TIME
24 HOURS
5 DAYS
PROJECT NAME: /� (� \\
N(C, - (\Sl! , -, C) F t l�� .
72 HOURS
NORMAL
OTHERS:
PROJECT NUMBER: >/`ll11
JUV `�-1` CG\.7
SAMPLE INTEGRITY (CHECK):
INTACT: TEMP (F)
SITE LOCATION: N
\•SC i r) i N L
IGL QUOTE NO/DATE
SAMPLER SIGNATURE: ` A�
I�
IGL FILE NO _
SAMPLE ID
DATE
TIME
DEPTH, FEET
COMMENTS
1‘)\•.)- 1) 1
IhT/1
0)L10
CI - t l
\
X
ic.(1do c. )1 -„'
IN\ --IC
$rl/Li
coo
tit)
X
X
J
r,v-1011
inns
O
')-(i
x
X
• 1( i) �`' 5--)I
L
---
o
i_ _.-
_
MU-11ti
i'hill
C»C
7-- `t
x
X
Mu- ).c) 1
` iwil
t>
s-7
X
X
1e-,11 ,,!(,) 17,(i C -)
My-1C`
%iti)11
i-It i)
'>._('1
X
X
Mu- -ICI
i/11/11_
iA��
\, ci
X
1. RELINQUISHED BY
OC- \1\, ((AI) bkn�
2: RECEIVED BY: 1
1. RELINQUISHED BY
2: RECEIVED BY
COMPANY
(i��
COMPANY
/6' L��5, LL (-
COMPANY
COMPANY
DATE p TIME
l�1��L1 ,C
'j
DATE TIME
�r�s�7L /�CC)
DATE TIME
DATE TIME
INTEGRATED GEOSCIENCIES LABORATORIES, LLC * 6016 CENTRALCREST STREET, HOUSTON, TEXAS 77092 * PHONE [phone] * WEBSITE www.igslaboratories.com

Hydrogeological Conceptual Site Model Update — Badin Business Park
Attachment D 2022 Aquifer Testing Calculations
EHS Support LLC

AQTESOLV for Windows
Data Set: P:\300-000\300-226\-Draft Documents\Task 0017-CSM Refinement\Aquifer Testing\Aqtesolv files\New p�
Date: 11/21/22
Time: 12:52:48
PROJECT INFORMATION
Company: CEC
Client: ALCOA
Project: 300-226
Location: Badin, North Carolina
Test Date: 9/29/22
Test Well: MW-201
AQUIFER DATA
Saturated Thickness: 13. ft
Anisotropy Ratio (Kz/Kr): 0.06529
PUMPING WELL DATA
No. of pumping wells: 1
Pumping Well No. 1: MW-201
X Location: 0. ft
Y Location: 0. ft
Casing Radius: 0.083 ft
Well Radius: 0.349 ft
Partially Penetrating Well
Depth to Top of Screen: 3. ft
Depth to Bottom of Screen: 13. ft
No. of pumping periods: 4
Pum. ing Period Data
Time (sec) Rate Finn Time (sec) Rate (L/min)
U. 22' 5. 5.1
420. 2.4 3665. 0.
OBSERVATION WELL DATA
No. of observation wells: 1
Observation Well No. 1: MW-201
X Location: 0. ft
Y Location: 0. ft
Radial distance from MW-201: 0. ft
Partially Penetrating Well
Depth to Top of Screen: 3. ft
Depth to Bottom of Screen: 13. ft
No. of Observations: 946
Observation Data
Time (sec) Displacement (ft) I ime (sec) Displacement (ft)
5. 0. 23 /U. 17.31
10. 0.08421 2375. 17.37
15. 0.3819 2380. 17.45
20. 0.5901 2385. 17.52
25. 0.7412 2390. 17.59
30. 0.8441 2395. 17.64
35. 0.8959 2400. 17.7
11/21/22 1 12:52:48

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
4 0.908 / 24U5. 1 /. /8
45. 0.9725 2410. 17.84
50. 0.9732 2415. 17.91
55. 1.001 2420. 17.95
60. 1.011 2425. 18.03
65. 1.011 2430. 18.09
70. 1.024 2435. 18.14
75. 1.025 2440. 18.18
80. 1.044 2445. 18.24
85. 1.051 2450. 18.28
90. 1.058 2455. 18.34
95. 1.099 2460. 18.4
100. 1.148 2465. 18.43
105. 1.167 2470. 18.48
110. 1.189 2475. 18.53
115. 1.198 2480. 18.56
120. 1.208 2485. 18.61
125. 1.208 2490. 18.65
130. 1.209 2495. 18.7
135. 1.209 2500. 18.76
140. 1.18 2505. 18.8
145. 1.222 2510. 18.84
150. 1.211 2515. 18.88
155. 1.212 2520. 18.92
160. 1.203 2525. 18.96
165. 1.204 2530. 19.01
170. 1.183 2535. 19.05
175. 1.156 2540. 19.1
180. 1.114 2545. 19.11
185. 1.081 2550. 19.15
190. 1.03 2555. 19.2
195. 0.9665 2560. 19.24
200. 0.9177 2565. 19.28
205. 0.8478 2570. 19.32
210. 0.8111 2575. 19.35
215. 0.7743 2580. 19.4
220. 0.8638 2585. 19.44
225. 0.9744 2590. 19.46
230. 1.05 2595. 19.5
235. 1.107 2600. 19.52
240. 1.149 2605. 19.56
245. 1.188 2610. 19.6
250. 1.227 2615. 19.63
255. 1.257 2620. 19.66
260. 1.284 2625. 19.7
265. 1.302 2630. 19.73
270. 1.344 2635. 19.76
275. 1.365 2640. 19.77
280. 1.383 2645. 19.82
285. 1.314 2650. 19.85
290. 1.245 2655. 19.88
295. 1.272 2660. 19.9
300. 1.293 2665. 19.93
305. 1.353 2670. 19.96
310. 1.468 2675. 19.97
315. 1.519 2680. 19.99
320. 1.578 2685. 20.02
325. 1.572 2690. 20.04
330. 1.557 2695. 20.06
335. 1.55 2700. 20.09
340. 1.535 2705. 20.12
345. 1.525 2710. 20.15
350. 1.517 2715. 20.17
355. 1.514 2720. 20.2
360. 1.524 2725. 20.21
365. 1.503 2730. 20.23
11 /21 /22 2 12:52:48

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
f/ 1.491 2 /35. 20.24
375. 1.471 2740. 20.27
380. 1.45 2745. 20.28
385. 1.42 2750. 20.3
390. 1.387 2755. 20.32
395. 1.348 2760. 20.35
400. 1.331 2765. 20.36
405. 1.286 2770. 20.39
410. 1.246 2775. 20.4
415. 1.212 2780. 20.42
420. 1.157 2785. 20.44
425. 1.121 2790. 20.44
430. 1.09 2795. 20.46
435. 1.053 2800. 20.47
440. 1.303 2805. 20.48
445. 1.597 2810. 20.51
450. 1.895 2815. 20.51
455. 2.181 2820. 20.51
460. 2.452 2825. 20.52
465. 2.704 2830. 20.53
470. 2.939 2835. 20.55
475. 3.164 2840. 20.55
480. 3.401 2845. 20.55
485. 3.629 2850. 20.57
490. 3.861 2855. 20.55
495. 4.059 2860. 20.55
500. 4.246 2865. 20.56
505. 4.436 2870. 20.56
510. 4.599 2875. 20.56
515. 4.768 2880. 20.55
520. 4.935 2885. 20.56
525. 5.098 2890. 20.55
530. 5.221 2895. 20.55
535. 5.355 2900. 20.55
540. 5.496 2905. 20.54
545. 5.61 2910. 20.55
550. 5.733 2915. 20.55
555. 5.865 2920. 20.56
560. 5.961 2925. 20.56
565. 6.074 2930. 20.56
570. 6.164 2935. 20.56
575. 6.247 2940. 20.56
580. 6.337 2945. 20.56
585. 6.399 2950. 20.56
590. 6.48 2955. 20.56
595. 6.532 2960. 20.57
600. 6.613 2965. 20.56
605. 6.673 2970. 20.55
610. 6.742 2975. 20.56
615. 6.805 2980. 20.55
620. 6.857 2985. 20.56
625. 6.909 2990. 20.55
630. 6.97 2995. 20.55
635. 7.022 3000. 20.55
640. 7.043 3005. 20.55
645. 7.116 3010. 20.55
650. 7.167 3015. 20.56
655. 7.208 3020. 20.57
660. 7.246 3025. 20.58
665. 7.267 3030. 20.57
670. 7.296 3035. 20.57
675. 7.317 3040. 20.57
680. 7.35 3045. 20.58
685. 7.368 3050. 20.56
690. 7.401 3055. 20.56
695. 7.431 3060. 20.57
11 /21 /22 3 12:52:48

AQTESOLV for Windows
Time sec) Displacement (ft) Time (sec) Displacement (ft)
7U 7.449 3Ub5. 20.58
705. 7.491 3070. 20.58
710. 7.509 3075. 20.58
715. 7.543 3080. 20.58
720. 7.54 3085. 20.59
725. 7.571 3090. 20.6
730. 7.604 3095. 20.59
735. 7.623 3100. 20.6
740. 7.664 3105. 20.62
745. 7.673 3110. 20.62
750. 7.706 3115. 20.62
755. 7.744 3120. 20.62
760. 7.765 3125. 20.64
765. 7.807 3130. 20.65
770. 7.828 3135. 20.65
775. 7.847 3140. 20.65
780. 7.89 3145. 20.67
785. 7.921 3150. 20.67
790. 7.942 3155. 20.7
795. 7.952 3160. 20.7
800. 7.985 3165. 20.72
805. 8.024 3170. 20.73
810. 8.076 3175. 20.74
815. 8.118 3180. 20.74
820. 8.16 3185. 20.75
825. 8.199 3190. 20.76
830. 8.219 3195. 20.76
835. 8.249 3200. 20.76
840. 8.278 3205. 20.77
845. 8.298 3210. 20.79
850. 8.328 3215. 20.78
855. 8.369 3220. 20.79
860. 8.399 3225. 20.8
865. 8.429 3230. 20.79
870. 8.441 3235. 20.82
875. 8.462 3240. 20.82
880. 8.48 3245. 20.82
885. 8.514 3250. 20.84
890. 8.553 3255. 20.84
895. 8.595 3260. 20.85
900. 8.616 3265. 20.87
905. 8.646 3270. 20.87
910. 8.688 3275. 20.88
915. 8.706 3280. 20.88
920. 8.766 3285. 20.89
925. 8.789 3290. 20.89
930. 8.828 3295. 20.9
935. 8.87 3300. 20.91
940. 8.911 3305. 20.91
945. 8.95 3310. 20.92
950. 8.977 3315. 20.92
955. 8.992 3320. 20.93
960. 9.04 3325. 20.91
965. 9.064 3330. 20.92
970. 9.104 3335. 20.93
975. 9.164 3340. 20.92
980. 9.197 3345. 20.93
985. 9.254 3350. 20.94
990. 9.287 3355. 20.95
995. 9.341 3360. 20.95
1000. 9.398 3365. 20.95
1005. 9.422 3370. 20.95
1010. 9.462 3375. 20.96
1015. 9.524 3380. 20.96
1020. 9.534 3385. 20.96
1025. 9.559 3390. 20.95
11 /21 /22 4 12:52:48

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
1 U3U. 9.55 / 3395. 20.95
1035. 9.603 3400. 20.95
1040. 9.642 3405. 20.95
1045. 9.66 3410. 20.96
1050. 9.681 3415. 20.94
1055. 9.701 3420. 20.94
1060. 9.743 3425. 20.94
1065. 9.773 3430. 20.94
1070. 9.811 3435. 20.92
1075. 9.832 3440. 20.92
1080. 9.861 3445. 20.92
1085. 9.881 3450. 20.92
1090. 9.913 3455. 20.92
1095. 9.931 3460. 20.92
1100. 9.973 3465. 20.91
1105. 10. 3470. 20.91
1110. 10.05 3475. 20.9
1115. 10.08 3480. 20.9
1120. 10.1 3485. 20.9
1125. 10.12 3490. 20.9
1130. 10.14 3495. 20.9
1135. 10.17 3500. 20.91
1140. 10.19 3505. 20.9
1145. 10.22 3510. 20.9
1150. 10.24 3515. 20.89
1155. 10.26 3520. 20.9
1160. 10.29 3525. 20.89
1165. 10.32 3530. 20.88
1170. 10.36 3535. 20.88
1175. 10.37 3540. 20.9
1180. 10.39 3545. 20.9
1185. 10.42 3550. 20.9
1190. 10.45 3555. 20.9
1195. 10.47 3560. 20.9
1200. 10.52 3565. 20.92
1205. 10.55 3570. 20.91
1210. 10.57 3575. 20.91
1215. 10.6 3580. 20.9
1220. 10.64 3585. 20.91
1225. 10.66 3590. 20.91
1230. 10.67 3595. 20.92
1235. 10.69 3600. 20.92
1240. 10.71 3605. 20.92
1245. 10.74 3610. 20.92
1250. 10.75 3615. 20.93
1255. 10.77 3620. 20.93
1260. 10.78 3625. 20.92
1265. 10.79 3630. 20.93
1270. 10.81 3635. 20.92
1275. 10.83 3640. 20.92
1280. 10.85 3645. 20.92
1285. 10.88 3650. 20.9
1290. 10.9 3655. 20.92
1295. 10.94 3660. 20.92
1300. 10.96 3665. 20.91
1305. 10.99 3670. 20.92
1310. 11.02 3675. 20.43
1315. 11.07 3680. 19.85
1320. 11.12 3685. 19.32
1325. 11.18 3690. 18.81
1330. 11.24 3695. 18.33
1335. 11.31 3700. 17.85
1340. 11.37 3705. 17.4
1345. 11.42 3710. 16.95
1350. 11.47 3715. 16.53
1355. 11.5 3720. 16.11
11 /21 /22 5 12:52:49

AQTESOLV for Windows
Time (sec) Displacement (ft) Time sec) Displacement (ft)
1 36U. 11.52 3 /25. 15. /3
1365. 11.58 3730. 15.33
1370. 11.62 3735. 14.98
1375. 11.66 3740. 14.61
1380. 11.68 3745. 14.28
1385. 11.69 3750. 13.94
1390. 11.71 3755. 13.63
1395. 11.71 3760. 13.32
1400. 11.73 3765. 13.01
1405. 11.73 3770. 12.73
1410. 11.73 3775. 12.45
1415. 11.74 3780. 12.18
1420. 11.78 3785. 11.92
1425. 11.79 3790. 11.67
1430. 11.8 3795. 11.43
1435. 11.81 3800. 11.19
1440. 11.82 3805. 10.95
1445. 11.83 3810. 10.73
1450. 11.86 3815. 10.52
1455. 11.87 3820. 10.32
1460. 11.88 3825. 10.12
1465. 11.89 3830. 9.92
1470. 11.9 3835. 9.737
1475. 11.92 3840. 9.551
1480. 11.94 3845. 9.38
1485. 11.97 3850. 9.215
1490. 11.98 3855. 9.041
1495. 11.99 3860. 8.897
1500. 12.01 3865. 8.735
1505. 12.03 3870. 8.592
1510. 12.03 3875. 8.448
1515. 12.05 3880. 8.316
1520. 12.07 3885. 8.185
1525. 12.07 3890. 8.052
1530. 12.09 3895. 7.928
1535. 12.1 3900. 7.805
1540. 12.12 3905. 7.681
1545. 12.12 3910. 7.579
1550. 12.14 3915. 7.464
1555. 12.14 3920. 7.359
1560. 12.17 3925. 7.259
1565. 12.17 3930. 7.156
1570. 12.19 3935. 7.066
1575. 12.2 3940. 6.972
1580. 12.21 3945. 6.869
1585. 12.23 3950. 6.797
1590. 12.23 3955. 6.705
1595. 12.24 3960. 6.624
1600. 12.25 3965. 6.552
1605. 12.26 3970. 6.471
1610. 12.28 3975. 6.4
1615. 12.28 3980. 6.328
1620. 12.28 3985. 6.257
1625. 12.32 3990. 6.185
1630. 12.33 3995. 6.126
1635. 12.34 4000. 6.066
1640. 12.36 4005. 5.983
1645. 12.37 4010. 5.931
1650. 12.38 4015. 5.88
1655. 12.39 4020. 5.819
1660. 12.4 4025. 5.767
1665. 12.41 4030. 5.704
1670. 12.43 4035. 5.652
1675. 12.44 4040. 5.602
1680. 12.45 4045. 5.557
1685. 12.46 4050. 5.5
11 /21 /22 6 12:52:49

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
169U. 12.47 4U55. 5.449
1695. 12.48 4060. 5.411
1700. 12.49 4065. 5.354
1705. 12.5 4070. 5.318
1710. 12.51 4075. 5.276
1715. 12.53 4080. 5.225
1720. 12.55 4085. 5.186
1725. 12.56 4090. 5.15
1730. 12.58 4095. 5.113
1735. 12.58 4100. 5.071
1740. 12.61 4105. 5.026
1745. 12.62 4110. 4.99
1750. 12.63 4115. 4.948
1755. 12.65 4120. 4.918
1760. 12.66 4125. 4.888
1765. 12.66 4130. 4.845
1770. 12.66 4135. 4.805
1775. 12.68 4140. 4.77
1780. 12.7 4145. 4.739
1785. 12.71 4150. 4.708
1790. 12.73 4155. 4.677
1795. 12.73 4160. 4.657
1800. 12.76 4165. 4.628
1805. 12.77 4170. 4.608
1810. 12.8 4175. 4.552
1815. 12.82 4180. 4.538
1820. 12.84 4185. 4.509
1825. 12.85 4190. 4.479
1830. 12.86 4195. 4.458
1835. 12.87 4200. 4.437
1840. 12.89 4205. 4.407
1845. 12.89 4210. 4.371
1850. 12.91 4215. 4.356
1855. 12.92 4220. 4.323
1860. 12.93 4225. 4.299
1865. 12.94 4230. 4.273
1870. 12.93 4235. 4.255
1875. 12.96 4240. 4.222
1880. 12.97 4245. 4.205
1885. 12.97 4250. 4.183
1890. 12.99 4255. 4.156
1895. 13. 4260. 4.14
1900. 13. 4265. 4.11
1905. 13.01 4270. 4.088
1910. 13.01 4275. 4.067
1915. 13.01 4280. 4.037
1920. 13.03 4285. 4.017
1925. 13.01 4290. 3.996
1930. 13.01 4295. 3.972
1935. 13.03 4300. 3.967
1940. 13.05 4305. 3.94
1945. 13.05 4310. 3.927
1950. 13.05 4315. 3.905
1955. 13.04 4320. 3.871
1960. 13.05 4325. 3.862
1965. 13.07 4330. 3.852
1970. 13.07 4335. 3.815
1975. 13.08 4340. 3.752
1980. 13.08 4345. 3.71
1985. 13.1 4350. 3.852
1990. 13.11 4355. 3.847
1995. 13.1 4360. 3.904
2000. 13.12 4365. 3.853
2005. 13.11 4370. 3.817
2010. 13.12 4375. 3.796
2015. 13.11 4380. 3.754
11 /21 /22 7 12:52:49

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
2U2U. 13.11 43 5. 3. /39
2025. 13.11 4390. 3.724
2030. 13.13 4395. 3.7
2035. 13.13 4400. 3.673
2040. 13.13 4405. 3.652
2045. 13.14 4410. 3.631
2050. 13.15 4415. 3.61
2055. 13.16 4420. 3.595
2060. 13.16 4425. 3.592
2065. 13.16 4430. 3.549
2070. 13.18 4435. 3.543
2075. 13.2 4440. 3.524
2080. 13.21 4445. 3.506
2085. 13.21 4450. 3.496
2090. 13.2 4455. 3.472
2095. 13.21 4460. 3.466
2100. 13.22 4465. 3.44
2105. 13.21 4470. 3.416
2110. 13.23 4475. 3.41
2115. 13.22 4480. 3.396
2120. 13.23 4485. 3.39
2125. 13.25 4490. 3.372
2130. 13.25 4495. 3.353
2135. 13.26 4500. 3.338
2140. 13.26 4505. 3.313
2145. 13.28 4510. 3.307
2150. 13.29 4515. 3.279
2155. 13.29 4520. 3.27
2160. 13.3 4525. 3.258
2165. 13.31 4530. 3.264
2170. 13.31 4535. 3.234
2175. 13.32 4540. 3.225
2180. 13.32 4545. 3.207
2185. 13.33 4550. 3.198
2190. 13.33 4555. 3.194
2195. 13.35 4560. 3.166
2200. 13.36 4565. 3.171
2205. 13.36 4570. 3.135
2210. 13.38 4575. 3.134
2215. 13.38 4580. 3.123
2220. 13.41 4585. 3.093
2225. 13.55 4590. 3.094
2230. 13.76 4595. 3.086
2235. 13.97 4600. 3.065
2240. 14.18 4605. 3.06
2245. 14.34 4610. 3.051
2250. 14.51 4615. 3.034
2255. 14.67 4620. 3.025
2260. 14.83 4625. 3.016
2265. 14.99 4630. 3.005
2270. 15.13 4635. 2.984
2275. 15.27 4640. 2.975
2280. 15.41 4645. 2.966
2285. 15.54 4650. 2.954
2290. 15.67 4655. 2.945
2295. 15.8 4660. 2.945
2300. 15.93 4665. 2.924
2305. 16.05 4670. 2.915
2310. 16.16 4675. 2.904
2315. 16.28 4680. 2.883
2320. 16.38 4685. 2.883
2325. 16.48 4690. 2.874
2330. 16.6 4695. 2.875
2335. 16.72 4700. 2.865
2340. 16.8 4705. 2.852
2345. 16.89 4710. 2.842
11 /21 /22 8 12:52:49

AQTESOLV for Windows
Time (sec) Displacement (ft) Time sec) Displacement (ft)
23b0. 16.9/ 4/15. 2.821
2355. 17.06 4720. 2.82
2360. 17.13 4725. 2.798
2365. 17.22 4730. 2.795
SOLUTION
Pumping Test
Aquifer Model: Confined
Solution Method: Theis (Step Test)
VISUAL ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate
T 8.239E-5 ft2/sec
S 0.005904
Sw-0.0693
C 0. sec2/ft5
P 3.
K = T/b = 6.337E-6 ft/sec (0.0001932 cm/sec)
Ss = S/b = 0.0004541 1 /ft
AUTOMATIC ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate Std. Error Approx. C.I. t-Ratio
T 8.239E-5 1.333E-6 +/- 2.616E-6 61.8 ft2/sec
S 0.005904 0.003878 +/- 0.007608 1.523
Sw-0.0693 0.3323 +/- 0.652 -0.2085
C 0. 9.072E+6 +/- 1.78E+7 0. sec2/ft5
P 3. 1.54 +/- 3.021 1.948
C.I. is approximate 95% confidence interval for parameter
t-ratio = estimate/std. error
No estimation window
K = T/b = 6.337E-6 ft/sec (0.0001932 cm/sec)
Ss = S/b = 0.0004541 1 /ft
Parameter Correlations
T S Sw C P
T 1.00 0.60 0.66 0.02 0.00
S 0.60 1.00 0.99 -0.08 0.00
Sw 0.66 0.99 1.00 -0.15 0.00
C 0.02 -0.08 -0.15 1.00 0.00
P 0.00 0.00 0.00 0.00 1.00
Residual Statistics
for weighted residuals
Sum of Squares 2231. ft2
Variance 2 371 ft2
Std. Deviation 1 54 ft
Mean -0.01884 ft
No. of Residuals 946
No. of Estimates 5
STEP TEST ANALYSIS RESULTS
Jacob-Rorabaugh Step Test Model: s(t) = BQ + CQP
11 /21 /22 9 12:52:49

AQTESOLV for Windows
t = 1.sec
Q in cu.ft/sec
B = -126.3
C=O.
P = 3.
Eden -Hazel Step Test Model: s(t) = (a + b Iog10(t))Q + CQP
Q in cu.ft/sec
a =-1309.6
b = 2224.5
C=O.
P = 3.
Well Efficiency:-6.034% (Q from last step)
11 /21 /22 10 12:52:49

AQTESOLV for Windows
Data Set: P:\300-000\300-226\-Draft Documents\Task 0017-CSM Refinement\Aquifer Testing\Aqtesolv files\New p�
Date: 11/21/22
Time: 12:52:07
PROJECT INFORMATION
Company: CEC
Client: ALCOA
Project: 300-226
Location: Badin, North Carolina
Test Date: 9/29/22
Test Well: MW-203
AQUIFER DATA
Saturated Thickness: 12. ft
Anisotropy Ratio (Kz/Kr): 1.
PUMPING WELL DATA
No. of pumping wells: 1
Pumping Well No. 1: MW-203
X Location: 0. ft
Y Location: 0. ft
Casing Radius: 0.083 ft
Well Radius: 0.349 ft
Partially Penetrating Well
Depth to Top of Screen: 2. ft
Depth to Bottom of Screen: 12. ft
No. of pumping periods: 3
Pum. ing Period Data
Time (sec) Rate (L/min Tisec)
U. 1.6 me 2885.
1550. 2.4
Rate (L/min)
OBSERVATION WELL DATA
No. of observation wells: 1
Observation Well No. 1: MW-203
X Location: 0. ft
Y Location: 0. ft
Radial distance from MW-203: 0. ft
Partially Penetrating Well
Depth to Top of Screen: 2. ft
Depth to Bottom of Screen: 12. ft
No. of Observations: 851
Observation Data
Time (sec) Displacement (ft) I ime sec) Displacement (ft)
5. 0.132 / 2135. 21.72
10. 0.2565 2140. 21.75
15. 0.2869 2145. 21.77
20. 0.2786 2150. 21.79
25. 0.2673 2155. 21.79
30. 0.2679 2160. 21.82
35. 0.2686 2165. 21.84
11/21/22 1 12:52:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time (sec) Displacement (ft)
4 0.2693 21 %0. 21.84
45. 0.291 2175. 21.86
50. 0.282 2180. 21.89
55. 0.282 2185. 21.91
60. 0.27 2190. 21.96
65. 0.3331 2195. 21.97
70. 0.3843 2200. 22.
75. 0.4053 2205. 22.02
80. 0.4141 2210. 22.04
85. 0.516 2215. 22.08
90. 0.5789 2220. 22.1
95. 0.6298 2225. 22.13
100. 0.6686 2230. 22.15
105. 0.7104 2235. 22.17
110. 0.7618 2240. 22.19
115. 0.8223 2245. 22.22
120. 0.9579 2250. 22.24
125. 1.099 2255. 22.27
130. 1.244 2260. 22.3
135. 1.368 2265. 22.32
140. 1.483 2270. 22.35
145. 1.595 2275. 22.36
150. 1.72 2280. 22.38
155. 1.844 2285. 22.4
160. 1.957 2290. 22.42
165. 2.072 2295. 22.45
170. 2.173 2300. 22.46
175. 2.286 2305. 22.49
180. 2.366 2310. 22.51
185. 2.467 2315. 22.54
190. 2.567 2320. 22.56
195. 2.659 2325. 22.59
200. 2.72 2330. 22.61
205. 2.802 2335. 22.63
210. 2.803 2340. 22.66
215. 2.854 2345. 22.67
220. 2.99 2350. 22.69
225. 3.145 2355. 22.68
230. 3.204 2360. 22.68
235. 3.267 2365. 22.68
240. 3.327 2370. 22.68
245. 3.399 2375. 22.69
250. 3.461 2380. 22.69
255. 3.521 2385. 22.7
260. 3.593 2390. 22.7
265. 3.623 2395. 22.7
270. 3.686 2400. 22.7
275. 3.726 2405. 22.7
280. 3.777 2410. 22.7
285. 3.819 2415. 22.7
290. 3.849 2420. 22.69
295. 3.892 2425. 22.7
300. 3.943 2430. 22.71
305. 3.974 2435. 22.7
310. 4.016 2440. 22.71
315. 4.035 2445. 22.71
320. 4.068 2450. 22.72
325. 4.098 2455. 22.72
330. 4.14 2460. 22.73
335. 4.2 2465. 22.74
340. 4.242 2470. 22.74
345. 4.26 2475. 22.74
350. 4.282 2480. 22.74
355. 4.294 2485. 22.75
360. 4.282 2490. 22.75
365. 4.273 2495. 22.75
11/21/22 2 12:52:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
f/ 4.274 2500. 22. /4
375. 4.262 2505. 22.73
380. 4.274 2510. 22.75
385. 4.274 2515. 22.76
390. 4.295 2520. 22.76
395. 4.316 2525. 22.75
400. 4.346 2530. 22.76
405. 4.367 2535. 22.77
410. 4.397 2540. 22.77
415. 4.426 2545. 22.78
420. 4.455 2550. 22.79
425. 4.497 2555. 22.79
430. 4.538 2560. 22.8
435. 4.577 2565. 22.8
440. 4.628 2570. 22.83
445. 4.679 2575. 22.83
450. 4.742 2580. 22.83
455. 4.793 2585. 22.85
460. 4.844 2590. 22.87
465. 4.895 2595. 22.87
470. 4.977 2600. 22.88
475. 5.029 2605. 22.9
480. 5.11 2610. 22.92
485. 5.195 2615. 22.92
490. 5.267 2620. 22.93
495. 5.349 2625. 22.94
500. 5.409 2630. 22.95
505. 5.452 2635. 22.96
510. 5.503 2640. 22.98
515. 5.555 2645. 22.98
520. 5.627 2650. 22.98
525. 5.678 2655. 22.99
530. 5.699 2660. 23.01
535. 5.749 2665. 23.01
540. 5.799 2670. 23.02
545. 5.87 2675. 23.03
550. 5.95 2680. 23.05
555. 6.031 2685. 23.06
560. 6.133 2690. 23.06
565. 6.236 2695. 23.07
570. 6.341 2700. 23.09
575. 6.432 2705. 23.12
580. 6.525 2710. 23.13
585. 6.619 2715. 23.14
590. 6.721 2720. 23.16
595. 6.824 2725. 23.17
600. 6.906 2730. 23.17
605. 6.987 2735. 23.1
610. 7.06 2740. 23.12
615. 7.153 2745. 23.14
620. 7.246 2750. 23.15
625. 7.348 2755. 23.16
630. 7.45 2760. 23.17
635. 7.552 2765. 23.18
640. 7.654 2770. 23.14
645. 7.777 2775. 23.11
650. 7.888 2780. 23.11
655. 7.982 2785. 23.1
660. 8.094 2790. 23.1
665. 8.208 2795. 23.11
670. 8.32 2800. 23.1
675. 8.444 2805. 23.09
680. 8.536 2810. 23.08
685. 8.617 2815. 23.06
690. 8.71 2820. 23.08
695. 8.782 2825. 23.08
11/21/22 3 12:52:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
7U 8.833 2�i3U. 23.08
705. 8.892 2835. 23.08
710. 8.943 2840. 22.92
715. 9.016 2845. 22.8
720. 9.079 2850. 22.7
725. 9.1 2855. 22.62
730. 9.139 2860. 22.55
735. 9.202 2865. 22.48
740. 9.254 2870. 22.39
745. 9.378 2875. 22.33
750. 9.511 2880. 22.26
755. 9.656 2885. 22.19
760. 9.789 2890. 22.11
765. 9.934 2895. 22.03
770. 10.08 2900. 21.95
775. 10.21 2905. 21.88
780. 10.34 2910. 21.81
785. 10.47 2915. 21.75
790. 10.59 2920. 21.66
795. 10.72 2925. 21.61
800. 10.85 2930. 21.53
805. 10.95 2935. 21.47
810. 11.08 2940. 21.4
815. 11.18 2945. 21.34
820. 11.3 2950. 21.26
825. 11.42 2955. 21.2
830. 11.53 2960. 21.13
835. 11.64 2965. 21.06
840. 11.74 2970. 21.
845. 11.85 2975. 20.93
850. 11.94 2980. 20.85
855. 12.04 2985. 20.77
860. 12.13 2990. 20.69
865. 12.22 2995. 20.62
870. 12.31 3000. 20.56
875. 12.4 3005. 20.48
880. 12.48 3010. 20.42
885. 12.58 3015. 20.36
890. 12.65 3020. 20.29
895. 12.72 3025. 20.23
900. 12.8 3030. 20.16
905. 12.88 3035. 20.1
910. 12.95 3040. 20.03
915. 13.03 3045. 19.96
920. 13.11 3050. 19.89
925. 13.18 3055. 19.82
930. 13.24 3060. 19.75
935. 13.31 3065. 19.68
940. 13.37 3070. 19.61
945. 13.43 3075. 19.56
950. 13.49 3080. 19.5
955. 13.54 3085. 19.44
960. 13.62 3090. 19.38
965. 13.7 3095. 19.31
970. 13.77 3100. 19.25
975. 13.84 3105. 19.19
980. 13.91 3110. 19.14
985. 13.99 3115. 19.07
990. 14.06 3120. 19.01
995. 14.12 3125. 18.96
1000. 14.17 3130. 18.89
1005. 14.24 3135. 18.83
1010. 14.31 3140. 18.77
1015. 14.35 3145. 18.71
1020. 14.4 3150. 18.64
1025. 14.47 3155. 18.58
11/21/22 4 12:52:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time (sec) Displacement (ft)
1 U3U. 14.51 31 bU. 18.52
1035. 14.56 3165. 18.45
1040. 14.62 3170. 18.38
1045. 14.66 3175. 18.32
1050. 14.71 3180. 18.25
1055. 14.75 3185. 18.18
1060. 14.81 3190. 18.12
1065. 14.85 3195. 18.05
1070. 14.89 3200. 17.97
1075. 14.92 3205. 17.9
1080. 14.98 3210. 17.84
1085. 15.01 3215. 17.76
1090. 15.07 3220. 17.7
1095. 15.1 3225. 17.63
1100. 15.14 3230. 17.57
1105. 15.18 3235. 17.51
1110. 15.21 3240. 17.45
1115. 15.24 3245. 17.36
1120. 15.28 3250. 17.3
1125. 15.31 3255. 17.24
1130. 15.35 3260. 17.19
1135. 15.38 3265. 17.13
1140. 15.42 3270. 17.06
1145. 15.45 3275. 17.
1150. 15.46 3280. 16.95
1155. 15.51 3285. 16.88
1160. 15.53 3290. 16.83
1165. 15.55 3295. 16.78
1170. 15.59 3300. 16.71
1175. 15.62 3305. 16.65
1180. 15.64 3310. 16.57
1185. 15.68 3315. 16.57
1190. 15.7 3320. 16.49
1195. 15.72 3325. 16.4
1200. 15.74 3330. 16.34
1205. 15.76 3335. 16.27
1210. 15.78 3340. 16.22
1215. 15.8 3345. 16.16
1220. 15.81 3350. 16.1
1225. 15.84 3355. 16.05
1230. 15.84 3360. 15.99
1235. 15.88 3365. 15.93
1240. 15.9 3370. 15.82
1245. 15.93 3375. 15.67
1250. 15.94 3380. 15.52
1255. 15.96 3385. 15.38
1260. 15.98 3390. 15.24
1265. 16. 3395. 15.08
1270. 16. 3400. 14.95
1275. 16.03 3405. 14.8
1280. 16.02 3410. 14.66
1285. 16.02 3415. 14.53
1290. 16.02 3420. 14.38
1295. 16.03 3425. 14.24
1300. 16.03 3430. 14.11
1305. 16.04 3435. 13.97
1310. 16.04 3440. 13.84
1315. 16.05 3445. 13.71
1320. 16.05 3450. 13.57
1325. 16.06 3455. 13.44
1330. 16.06 3460. 13.3
1335. 16.05 3465. 13.18
1340. 16.07 3470. 13.06
1345. 16.08 3475. 12.92
1350. 16.08 3480. 12.79
1355. 16.08 3485. 12.67
11 /21 /22 5 12:52:07

AQTESOLV for Windows
Time (sec) Displacement (ft) Time sec) Displacement (ft)
1 3b0. 16.1 349U. 12.53
1365. 16.1 3495. 12.41
1370. 16.1 3500. 12.28
1375. 16.09 3505. 12.16
1380. 16.09 3510. 12.04
1385. 16.09 3515. 11.93
1390. 16.1 3520. 11.81
1395. 16.11 3525. 11.69
1400. 16.11 3530. 11.56
1405. 16.11 3535. 11.45
1410. 16.13 3540. 11.32
1415. 16.12 3545. 11.21
1420. 16.13 3550. 11.09
1425. 16.13 3555. 10.97
1430. 16.13 3560. 10.85
1435. 16.14 3565. 10.74
1440. 16.14 3570. 10.64
1445. 16.15 3575. 10.52
1450. 16.15 3580. 10.41
1455. 16.15 3585. 10.31
1460. 16.15 3590. 10.19
1465. 16.14 3595. 10.09
1470. 16.15 3600. 9.976
1475. 16.15 3605. 9.874
1480. 16.15 3610. 9.75
1485. 16.15 3615. 9.656
1490. 16.16 3620. 9.554
1495. 16.16 3625. 9.453
1500. 16.17 3630. 9.339
1505. 16.17 3635. 9.249
1510. 16.17 3640. 9.148
1515. 16.19 3645. 9.034
1520. 16.3 3650. 8.941
1525. 16.39 3655. 8.851
1530. 16.49 3660. 8.748
1535. 16.57 3665. 8.655
1540. 16.66 3670. 8.553
1545. 16.74 3675. 8.451
1550. 16.82 3680. 8.358
1555. 16.9 3685. 8.265
1560. 16.97 3690. 8.184
1565. 17.03 3695. 8.082
1570. 17.09 3700. 8.002
1575. 17.17 3705. 7.909
1580. 17.23 3710. 7.827
1585. 17.31 3715. 7.734
1590. 17.38 3720. 7.64
1595. 17.45 3725. 7.549
1600. 17.51 3730. 7.468
1605. 17.59 3735. 7.383
1610. 17.66 3740. 7.302
1615. 17.73 3745. 7.21
1620. 17.79 3750. 7.129
1625. 17.85 3755. 7.057
1630. 17.91 3760. 6.976
1635. 17.99 3765. 6.883
1640. 18.04 3770. 6.802
1645. 18.11 3775. 6.729
1650. 18.18 3780. 6.657
1655. 18.25 3785. 6.584
1660. 18.31 3790. 6.502
1665. 18.37 3795. 6.43
1670. 18.42 3800. 6.349
1675. 18.48 3805. 6.269
1680. 18.53 3810. 6.186
1685. 18.58 3815. 6.117
11/21/22 6 12:52:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
1690. 18.63 382U. 6.055
1695. 18.69 3825. 5.984
1700. 18.74 3830. 5.902
1705. 18.78 3835. 5.838
1710. 18.83 3840. 5.769
1715. 18.88 3845. 5.696
1720. 18.92 3850. 5.633
1725. 18.97 3855. 5.56
1730. 19.01 3860. 5.5
1735. 19.05 3865. 5.427
1740. 19.1 3870. 5.354
1745. 19.14 3875. 5.303
1750. 19.18 3880. 5.23
1755. 19.21 3885. 5.17
1760. 19.25 3890. 5.107
1765. 19.29 3895. 5.048
1770. 19.32 3900. 4.989
1775. 19.37 3905. 4.926
1780. 19.41 3910. 4.876
1785. 19.45 3915. 4.817
1790. 19.48 3920. 4.753
1795. 19.51 3925. 4.681
1800. 19.54 3930. 4.629
1805. 19.57 3935. 4.568
1810. 19.61 3940. 4.517
1815. 19.65 3945. 4.453
1820. 19.69 3950. 4.413
1825. 19.73 3955. 4.349
1830. 19.77 3960. 4.297
1835. 19.81 3965. 4.235
1840. 19.86 3970. 4.183
1845. 19.9 3975. 4.131
1850. 19.96 3980. 4.08
1855. 20. 3985. 4.027
1860. 20.04 3990. 3.976
1865. 20.08 3995. 3.925
1870. 20.11 4000. 3.874
1875. 20.16 4005. 3.824
1880. 20.18 4010. 3.774
1885. 20.23 4015. 3.736
1890. 20.26 4020. 3.686
1895. 20.31 4025. 3.636
1900. 20.34 4030. 3.595
1905. 20.38 4035. 3.545
1910. 20.41 4040. 3.514
1915. 20.43 4045. 3.463
1920. 20.46 4050. 3.412
1925. 20.5 4055. 3.37
1930. 20.54 4060. 3.328
1935. 20.58 4065. 3.289
1940. 20.61 4070. 3.247
1945. 20.64 4075. 3.196
1950. 20.68 4080. 3.166
1955. 20.72 4085. 3.114
1960. 20.75 4090. 3.072
1965. 20.78 4095. 3.042
1970. 20.81 4100. 2.999
1975. 20.83 4105. 2.959
1980. 20.87 4110. 2.917
1985. 20.87 4115. 2.874
1990. 20.9 4120. 2.843
1995. 20.93 4125. 2.812
2000. 20.97 4130. 2.783
2005. 21.04 4135. 2.742
2010. 21.05 4140. 2.701
2015. 21.09 4145. 2.672
11/21/22 7 12:52:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time (sec) Displacement (ft)
2U2U. 21.13 415U. 2.631
2025. 21.15 4155. 2.602
2030. 21.19 4160. 2.562
2035. 21.22 4165. 2.528
2040. 21.23 4170. 2.489
2045. 21.26 4175. 2.455
2050. 21.29 4180. 2.415
2055. 21.32 4185. 2.372
2060. 21.34 4190. 2.342
2065. 21.36 4195. 2.311
2070. 21.39 4200. 2.29
2075. 21.42 4205. 2.259
2080. 21.47 4210. 2.226
2085. 21.49 4215. 2.207
2090. 21.52 4220. 2.175
2095. 21.55 4225. 2.145
2100. 21.58 4230. 2.115
2105. 21.6 4235. 2.095
2110. 21.62 4240. 2.065
2115. 21.65 4245. 2.035
2120. 21.68 4250. 2.
2125. 21.7 4255. 1.968
2130. 21.7
SOLUTION
Pumping Test
Aquifer Model: Confined
Solution Method: Theis (Step Test)
VISUAL ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate
T 1.661E-5 ft2/sec
S 0.03075
Sw 0.
C 1. sec2/ft5
P 1.5
K = T/b = 1.384E-6 ft/sec (4.218E-5 cm/sec)
Ss = S/b = 0.002562 1 /ft
AUTOMATIC ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate Std. Error Approx. C.I. t-Ratio
T 1.661E-5 2.394E4 +/-4.699E-/ 69.3/ ft2/sec
S 0.03075 0.003031 +/- 0.005951 10.14
Sw 0. not estimated
C 1. 9.75E+4 +/- 1.914E+5 1.026E-5 sec2/ft5
P 1.5 1.564E+4 +/- 3.07E+4 9.59E-5
C.I. is approximate 95% confidence interval for parameter
t-ratio = estimate/std. error
No estimation window
K = T/b = 1.384E-6 ft/sec (4.218E-5 cm/sec)
Ss = S/b = 0.002562 1/ft
Parameter Correlations
T S C P
T 1 00 -O 63 0 4 0 8
11/21/22 8 12:52:07

AQTESOLV for Windows
S -0.63 1.00 -0.35 -0.45
C 0.34 -0.35 1.00 0.99
P 0.38 -0.45 0.99 1.00
Residual Statistics
for weighted residuals
Sum of Squares 4660. ft2
Variance 5 502 ft2
Std. Deviation 2 346 ft
Mean -0.387 ft
No. of Residuals 851
No. of Estimates 4
STEP TEST ANALYSIS RESULTS
Jacob-Rorabaugh Step Test Model: s(t) = BQ + CQP
t = 1.sec
Q in cu.ft/sec
B = 0.
C=1.
P = 1.5
Eden -Hazel Step Test Model: s(t) = (a + b Iog10(t))Q + CQP
Q in cu.ft/sec
a = -2.208E+4
b = 1.104E+4
C=1.
P = 1.5
Well Efficiency: 0.% (Q from last step)
11/21/22 9 12:52:07

AQTESOLV for Windows
Data Set: P:\300-000\300-226\-Draft Documents\Task 0017-CSM Refinement\Aquifer Testing\Aqtesolv files\New p�
Date: 11/21/22
Time: 12:54:06
PROJECT INFORMATION
Company: CEC
Client: ALCOA
Project: 300-226
Location: Badin, North Carolina
Test Date: 9/26/22
Test Well: MW-205
AQUIFER DATA
Saturated Thickness: 14.5 ft
Anisotropy Ratio (Kz/Kr): 1.
PUMPING WELL DATA
No. of pumping wells: 1
Pumping Well No. 1: MW-205
X Location: 0. ft
Y Location: 0. ft
Casing Radius: 0.083 ft
Well Radius: 0.349 ft
Partially Penetrating Well
Depth to Top of Screen: 4.5 ft
Depth to Bottom of Screen: 14.5 ft
No. of pumping periods: 9
Pum. ing Period Data
Time (sec) Rate (Limn Time sec) Rate (L/min)
U. 0.2 2815. 4
600. 0.5 3235. 6.
1165. 1. 3715. 7.3
1430. 2. 3900. 0.
2315. 3.
OBSERVATION WELL DATA
No. of observation wells: 1
Observation Well No. 1: MW-205
X Location: 0. ft
Y Location: 0. ft
Radial distance from MW-205: 0. ft
Partially Penetrating Well
Depth to Top of Screen: 4.5 ft
Depth to Bottom of Screen: 14.5 ft
No. of Observations: 813
Observation Data
Time (sec) Dis lacement (ft) Time (sec) Displacement (ft)
5. 03 2U4U. 1.549
10. 0.003 2045. 1.575
15. 0.007 2050. 1.545
20. 0.007 2055. 1.589
11/21/22 1 12:54:06

AQTESOLV for Windows
Time (sec) Displacement (ft) Time (sec) Displacement (ft)
25. 0.00 / 20b0. 1.609
30. 0.007 2065. 1.642
35. 0.01 2070. 1.652
40. 0.01 2075. 1.706
45. 0.01 2080. 1.713
50. 0.007 2085. 1.716
55. 0.01 2090. 1.719
60. 0.06 2095. 1.672
65. 0.114 2100. 1.555
70. 0.081 2105. 1.525
75. 0.091 2110. 1.475
80. 0.124 2115. 1.425
85. 0.184 2120. 1.374
90. 0.265 2125. 1.341
95. 0.345 2130. 1.311
100. 0.422 2135. 1.267
105. 0.329 2140. 1.22
110. 0.164 2145. 1.173
115. 0.084 2150. 1.126
120. 0.087 2155. 1.116
125. 0.081 2160. 1.106
130. 0.097 2165. 1.143
135. 0.107 2170. 1.163
140. 0.107 2175. 1.203
145. 0.101 2180. 1.25
150. 0.097 2185. 1.291
155. 0.087 2190. 1.277
160. 0.077 2195. 1.334
165. 0.084 2200. 1.358
170. 0.081 2205. 1.371
175. 0.074 2210. 1.384
180. 0.091 2215. 1.381
185. 0.084 2220. 1.381
190. 0.084 2225. 1.394
195. 0.094 2230. 1.388
200. 0.097 2235. 1.401
205. 0.091 2240. 1.428
210. 0.091 2245. 1.451
215. 0.097 2250. 1.468
220. 0.097 2255. 1.471
225. 0.094 2260. 1.478
230. 0.094 2265. 1.471
235. 0.104 2270. 1.468
240. 0.097 2275. 1.475
245. 0.091 2280. 1.482
250. 0.094 2285. 1.485
255. 0.097 2290. 1.485
260. 0.097 2295. 1.475
265. 0.097 2300. 1.448
270. 0.101 2305. 1.435
275. 0.097 2310. 1.425
280. 0.097 2315. 1.408
285. 0.104 2320. 1.391
290. 0.104 2325. 1.384
295. 0.107 2330. 1.498
300. 0.107 2335. 1.662
305. 0.107 2340. 1.786
310. 0.097 2345. 1.894
315. 0.101 2350. 1.987
320. 0.104 2355. 2.071
325. 0.097 2360. 2.138
330. 0.094 2365. 2.195
335. 0.094 2370. 2.245
340. 0.097 2375. 2.282
345. 0.101 2380. 2.309
350. 0.094 2385. 2.332
11 /21 /22 2 12:54:06

AQTESOLV for Windows
Time (sec) Displacement (ft) Time sec) Displacement (ft)
355. 0.09 / 2390. 2.366
360. 0.091 2395. 2.396
365. 0.094 2400. 2.423
370. 0.094 2405. 2.45
375. 0.091 2410. 2.497
380. 0.101 2415. 2.537
385. 0.097 2420. 2.574
390. 0.101 2425. 2.59
395. 0.09 2430. 2.597
400. 0.08 2435. 2.631
405. 0.09 2440. 2.641
410. 0.08 2445. 2.621
415. 0.084 2450. 2.624
420. 0.094 2455. 2.651
425. 0.1 2460. 2.681
430. 0.097 2465. 2.698
435. 0.087 2470. 2.734
440. 0.084 2475. 2.768
445. 0.087 2480. 2.798
450. 0.094 2485. 2.818
455. 0.094 2490. 2.842
460. 0.1 2495. 2.858
465. 0.1 2500. 2.869
470. 0.114 2505. 2.885
475. 0.097 2510. 2.902
480. 0.1 2515. 2.919
485. 0.087 2520. 2.932
490. 0.087 2525. 2.952
495. 0.097 2530. 2.969
500. 0.087 2535. 2.979
505. 0.094 2540. 2.996
510. 0.087 2545. 3.009
515. 0.067 2550. 3.029
520. 0.07 2555. 3.043
525. 0.033 2560. 3.049
530. 0.084 2565. 3.063
535. 0.094 2570. 3.073
540. 0.1 2575. 3.073
545. 0.094 2580. 3.073
550. 0.087 2585. 3.076
555. 0.09 2590. 3.083
560. 0.087 2595. 3.083
565. 0.067 2600. 3.086
570. 0.07 2605. 3.09
575. 0.064 2610. 3.09
580. 0.07 2615. 3.09
585. 0.07 2620. 3.096
590. 0.07 2625. 3.11
595. 0.08 2630. 3.12
600. 0.097 2635. 3.133
605. 0.117 2640. 3.137
610. 0.124 2645. 3.15
615. 0.147 2650. 3.147
620. 0.352 2655. 3.147
625. 0.456 2660. 3.147
630. 0.502 2665. 3.143
635. 0.533 2670. 3.137
640. 0.509 2675. 3.133
645. 0.476 2680. 3.137
650. 0.422 2685. 3.133
655. 0.399 2690. 3.133
660. 0.369 2695. 3.12
665. 0.335 2700. 3.116
670. 0.318 2705. 3.123
675. 0.302 2710. 3.126
680. 0.271 2715. 3.126
11 /21 /22 3 12:54:06

AQTESOLV for Windows
Time (sec) Displacement (ft) Time sec) Displacement (ft)
E�8 0.241 2 /20. 3.126
690. 0.225 2725. 3.13
695. 0.218 2730. 3.13
700. 0.198 2735. 3.14
705. 0.194 2740. 3.147
710. 0.191 2745. 3.147
715. 0.178 2750. 3.157
720. 0.184 2755. 3.137
725. 0.168 2760. 3.143
730. 0.178 2765. 3.147
735. 0.174 2770. 3.1
740. 0.178 2775. 3.096
745. 0.181 2780. 3.1
750. 0.181 2785. 3.11
755. 0.178 2790. 3.113
760. 0.174 2795. 3.113
765. 0.178 2800. 3.096
770. 0.174 2805. 3.103
775. 0.168 2810. 3.1
780. 0.164 2815. 3.103
785. 0.168 2820. 3.11
790. 0.174 2825. 3.1
795. 0.161 2830. 3.096
800. 0.171 2835. 3.133
805. 0.164 2840. 3.261
810. 0.168 2845. 3.378
815. 0.171 2850. 3.502
820. 0.168 2855. 3.609
825. 0.171 2860. 3.726
830. 0.178 2865. 3.833
835. 0.178 2870. 3.914
840. 0.178 2875. 3.998
845. 0.181 2880. 4.085
850. 0.178 2885. 4.168
855. 0.175 2890. 4.245
860. 0.178 2895. 4.319
865. 0.181 2900. 4.383
870. 0.188 2905. 4.443
875. 0.188 2910. 4.493
880. 0.188 2915. 4.547
885. 0.188 2920. 4.601
890. 0.198 2925. 4.658
895. 0.195 2930. 4.704
900. 0.205 2935. 4.715
905. 0.205 2940. 4.798
910. 0.198 2945. 4.845
915. 0.175 2950. 4.892
920. 0.158 2955. 4.936
925. 0.144 2960. 4.983
930. 0.168 2965. 5.026
935. 0.168 2970. 5.063
940. 0.168 2975. 5.107
945. 0.171 2980. 5.15
950. 0.178 2985. 5.187
955. 0.181 2990. 5.217
960. 0.191 2995. 5.254
965. 0.205 3000. 5.287
970. 0.211 3005. 5.318
975. 0.208 3010. 5.344
980. 0.211 3015. 5.381
985. 0.205 3020. 5.405
990. 0.205 3025. 5.438
995. 0.198 3030. 5.472
1000. 0.198 3035. 5.485
1005. 0.201 3040. 5.485
1010. 0.198 3045. 5.498
11 /21 /22 4 12: 54: 06

AQTESOLV for Windows
Time sec) Displacement (ft) Time (sec) Displacement (ft)
1 U15. 0.198 3U5U. 5.502
1020. 0.195 3055. 5.502
1025. 0.198 3060. 5.512
1030. 0.195 3065. 5.522
1035. 0.201 3070. 5.542
1040. 0.198 3075. 5.559
1045. 0.191 3080. 5.576
1050. 0.195 3085. 5.586
1055. 0.198 3090. 5.592
1060. 0.198 3095. 5.609
1065. 0.198 3100. 5.619
1070. 0.201 3105. 5.619
1075. 0.195 3110. 5.626
1080. 0.201 3115. 5.633
1085. 0.195 3120. 5.643
1090. 0.195 3125. 5.649
1095. 0.198 3130. 5.653
1100. 0.201 3135. 5.666
1105. 0.195 3140. 5.679
1110. 0.201 3145. 5.696
1115. 0.201 3150. 5.713
1120. 0.205 3155. 5.73
1125. 0.208 3160. 5.733
1130. 0.208 3165. 5.733
1135. 0.211 3170. 5.74
1140. 0.205 3175. 5.746
1145. 0.201 3180. 5.733
1150. 0.195 3185. 5.736
1155. 0.198 3190. 5.733
1160. 0.191 3195. 5.74
1165. 0.181 3200. 5.753
1170. 0.175 3205. 5.76
1175. 0.171 3210. 5.77
1180. 0.165 3215. 5.77
1185. 0.222 3220. 5.777
1190. 0.258 3225. 5.78
1195. 0.268 3230. 5.783
1200. 0.275 3235. 5.894
1205. 0.282 3240. 6.038
1210. 0.305 3245. 6.102
1215. 0.329 3250. 6.071
1220. 0.339 3255. 5.974
1225. 0.342 3260. 5.897
1230. 0.332 3265. 5.931
1235. 0.329 3270. 6.001
1240. 0.339 3275. 6.061
1245. 0.346 3280. 6.42
1250. 0.359 3285. 6.745
1255. 0.359 3290. 6.852
1260. 0.362 3295. 6.829
1265. 0.356 3300. 6.832
1270. 0.356 3305. 6.835
1275. 0.346 3310. 6.835
1280. 0.346 3315. 6.895
1285. 0.352 3320. 6.942
1290. 0.352 3325. 6.996
1295. 0.352 3330. 7.043
1300. 0.352 3335. 7.08
1305. 0.359 3340. 7.123
1310. 0.356 3345. 7.177
1315. 0.346 3350. 7.237
1320. 0.346 3355. 7.271
1325. 0.336 3360. 7.298
1330. 0.329 3365. 7.338
1335. 0.325 3370. 7.378
1340. 0.329 3375. 7.418
11 /21 /22 5 12:54:06

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
1345. 0.329 33 0. 7.442
1350. 0.339 3385. 7.472
1355. 0.339 3390. 7.495
1360. 0.336 3395. 7.522
1365. 0.329 3400. 7.542
1370. 0.319 3405. 7.837
1375. 0.315 3410. 7.877
1380. 0.319 3415. 7.917
1385. 0.319 3420. 7.964
1390. 0.319 3425. 8.004
1395. 0.322 3430. 8.051
1400. 0.322 3435. 8.095
1405. 0.319 3440. 8.132
1410. 0.329 3445. 8.175
1415. 0.326 3450. 8.202
1420. 0.329 3455. 8.229
1425. 0.342 3460. 8.266
1430. 0.419 3465. 8.309
1435. 0.453 3470. 8.329
1440. 0.486 3475. 8.366
1445. 0.496 3480. 8.293
1450. 0.54 3485. 8.336
1455. 0.58 3490. 8.319
1460. 0.607 3495. 8.303
1465. 0.634 3500. 8.226
1470. 0.661 3505. 8.246
1475. 0.691 3510. 8.209
1480. 0.724 3515. 8.199
1485. 0.751 3520. 8.202
1490. 0.805 3525. 8.239
1495. 0.865 3530. 8.195
1500. 0.912 3535. 8.185
1505. 0.939 3540. 8.249
1510. 0.969 3545. 8.296
1515. 0.996 3550. 8.313
1520. 1.002 3555. 8.336
1525. 0.999 3560. 8.353
1530. 1.019 3565. 8.363
1535. 1.016 3570. 8.39
1540. 0.996 3575. 8.413
1545. 0.975 3580. 8.433
1550. 0.959 3585. 8.453
1555. 0.925 3590. 8.48
1560. 0.882 3595. 8.504
1565. 0.862 3600. 8.51
1570. 0.835 3605. 8.547
1575. 0.821 3610. 8.564
1580. 0.808 3615. 8.598
1585. 0.831 3620. 8.624
1590. 0.818 3625. 8.591
1595. 0.801 3630. 8.608
1600. 0.815 3635. 8.621
1605. 0.868 3640. 8.634
1610. 0.932 3645. 8.634
1615. 0.992 3650. 8.614
1620. 1.039 3655. 8.554
1625. 1.086 3660. 8.527
1630. 1.073 3665. 8.537
1635. 1.11 3670. 8.531
1640. 1.167 3675. 8.524
1645. 1.183 3680. 8.514
1650. 1.177 3685. 8.507
1655. 1.153 3690. 8.48
1660. 1.133 3695. 8.464
1665. 1.123 3700. 8.45
1670. 1.103 3705. 8.427
11 /21 /22 6 12: 54: 06

AQTESOLV for Windows
Time (sec) Displacement (ft) Time sec) Displacement (ft)
16 5. 1.0 /6 3 / 10. 8.366
1680. 1.136 3715. 8.306
1685. 1.113 3720. 8.289
1690. 1.083 3725. 8.303
1695. 1.056 3730. 8.309
1700. 1.036 3735. 8.356
1705. 0.996 3740. 8.403
1710. 0.935 3745. 8.433
1715. 0.929 3750. 8.467
1720. 0.915 3755. 8.494
1725. 0.976 3760. 8.527
1730. 1.043 3765. 8.557
1735. 1.083 3770. 8.577
1740. 1.12 3775. 8.611
1745. 1.116 3780. 8.644
1750. 1.146 3785. 8.685
1755. 1.19 3790. 8.715
1760. 1.14 3795. 8.738
1765. 1.059 3800. 8.775
1770. 1.113 3805. 8.795
1775. 1.167 3810. 8.825
1780. 1.197 3815. 8.839
1785. 1.22 3820. 8.855
1790. 1.26 3825. 8.882
1795. 1.247 3830. 8.906
1800. 1.304 3835. 8.926
1805. 1.381 3840. 8.949
1810. 1.358 3845. 8.963
1815. 1.331 3850. 8.973
1820. 1.344 3855. 8.953
1825. 1.374 3860. 8.983
1830. 1.364 3865. 9.003
1835. 1.347 3870. 9.013
1840. 1.428 3875. 9.026
1845. 1.451 3880. 9.036
1850. 1.518 3885. 9.057
1855. 1.548 3890. 9.063
1860. 1.555 3895. 9.073
1865. 1.538 3900. 9.083
1870. 1.559 3905. 9.097
1875. 1.612 3910. 9.107
1880. 1.659 3915. 9.113
1885. 1.679 3920. 9.124
1890. 1.703 3925. 9.09
1895. 1.739 3930. 8.963
1900. 1.76 3935. 8.996
1905. 1.78 3940. 8.899
1910. 1.776 3945. 8.842
1915. 1.763 3950. 8.812
1920. 1.796 3955. 8.718
1925. 1.83 3960. 8.604
1930. 1.857 3965. 8.44
1935. 1.84 3970. 8.279
1940. 1.709 3975. 8.115
1945. 1.696 3980. 7.927
1950. 1.669 3985. 7.733
1955. 1.656 3990. 7.572
1960. 1.646 3995. 7.438
1965. 1.609 4000. 7.271
1970. 1.595 4005. 7.11
1975. 1.592 4010. 6.983
1980. 1.582 4015. 6.778
1985. 1.565 4020. 6.014
1990. 1.585 4025. 4.741
1995. 1.622 4030. 3.705
2000. 1.646 4035. 2.888
11 /21 /22 7 12: 54: 06

AQTESOLV for Windows
Time sec) Displacement (ft) Time (sec) Displacement (ft)
2UU5. 1.659 4U40. 2.355
2010. 1.636 4045. 1.946
2015. 1.636 4050. 1.383
2020. 1.639 4055. 0.954
2025. 1.646 4060. 0.582
2030. 1.582 4065. 0.257
2035. 1.532
SOLUTION
Pumping Test
Aquifer Model: Confined
Solution Method: Theis (Step Test)
VISUAL ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate
T 0.009595 ft2/min
S 0.136
Sw 0.
C 1. sec2/ft5
P 1.5
K = T/b = 0.0006617 ft/min (0.0003362 cm/sec)
Ss = S/b = 0.009377 1/ft
AUTOMATIC ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate Std. Error Approx. C.I. t-Ratio
T O.009595 0.000320/ +/- 0.0006295 29.92 ft2/min
S 0.136 0.02533 +/- 0.04972 5.368
Sw 0. not estimated
C 1. 6159.3 +/- 1.209E+4 0.0001624 sec2/ft5
P 1.5 1294.1 +/- 2540.4 0.001159
C.I. is approximate 95% confidence interval for parameter
t-ratio = estimate/std. error
No estimation window
K = T/b = 0.0006617 ft/min (0.0003362 cm/sec)
Ss = S/b = 0.009377 1/ft
Parameter Correlations
T S C P
T 100 -079 042 047
S -0.79 1.00 -0.65 -0.75
C 0.42 -0.65 1.00 0.99
P 0.47 -0.75 0.99 1.00
Residual Statistics
for weighted residuals
Sum of Squares 461.9 ft2
Variance 0 571 ft2
Std. Deviation 0 7556 ft
Mean -0.2356 ft
No. of Residuals 813
No. of Estimates 4
STEP TEST ANALYSIS RESULTS
11 /21 /22 8 12: 54: 06

AQTESOLV for Windows
Jacob-Rorabaugh Step Test Model: s(t) = BQ + CQP
t = 1.sec
Q in cu.ft/sec
B = 1.498E-10
C = 1.
P = 1.5
Eden -Hazel Step Test Model: s(t) = (a + b Iog10(t))Q + CQP
Q in cu.ft/sec
a =-1905.8
b = 1146.
C=1.
P = 1.5
Well Efficiency: 2.285E-7% (Q from last step)
11 /21 /22 9 12:54:06

AQTESOLV for Windows
Data Set: P:\300-000\300-226\-Draft Documents\Task 0017-CSM Refinement\Aquifer Testing\Aqtesolv files\New p�
Date: 11/21/22
Time: 12:50:07
PROJECT INFORMATION
Company: CEC
Client: ALCOA
Project: 300-226
Location: Badin, North Carolina
Test Date: 9/27/22
Test Well: MW-220
AQUIFER DATA
Saturated Thickness: 6. ft
Anisotropy Ratio (Kz/Kr): 1.
PUMPING WELL DATA
No. of pumping wells: 1
Pumping Well No. 1: MW-220
X Location: 0. ft
Y Location: 0. ft
Casing Radius: 0.083 ft
Well Radius: 0.25 ft
Partially Penetrating Well
Depth to Top of Screen: 1. ft
Depth to Bottom of Screen: 6. ft
No. of pumping periods: 3
Pum. ing Period Data
Time (sec) Rate (L/min Time (sec)
U. 0.5 765.
510. 1.2
Rate (L/min)
OBSERVATION WELL DATA
No. of observation wells: 1
Observation Well No. 1: MW-220
X Location: 0. ft
Y Location: 0. ft
Radial distance from MW-220: 0. ft
Partially Penetrating Well
Depth to Top of Screen: 1. ft
Depth to Bottom of Screen: 6. ft
No. of Observations: 854
Observation Data
Time (sec) Displacement (ft) I ime (sec) Displacement (ft)
5. 0.009432 214U. 4.965
10. 0.009843 2145. 4.943
15. 0.02228 2150. 4.91
20. 0.0257 2155. 4.931
25. 0.02578 2160. 4.828
30. 0.02578 2165. 4.807
35. 0.04683 2170. 4.807
11/21/22 1 12:50:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time (sec) Displacement (ft)
4 0.04683 21 5. 4.806
45. 0.0348 2180. 4.806
50. 0.04082 2185. 4.785
55. 0.05219 2190. 4.775
60. 0.06039 2195. 4.766
65. 0.05356 2200. 4.765
70. 0.05274 2205. 4.753
75. 0.05192 2210. 4.743
80. 0.0511 2215. 4.744
85. 0.05996 2220. 4.732
90. 0.08702 2225. 4.732
95. 0.06898 2230. 4.733
100. 0.06898 2235. 4.733
105. 0.078 2240. 4.716
110. 0.08702 2245. 4.704
115. 0.08681 2250. 4.704
120. 0.08653 2255. 4.695
125. 0.09829 2260. 4.695
130. 0.107 2265. 4.683
135. 0.1068 2270. 4.674
140. 0.1576 2275. 4.673
145. 0.4886 2280. 4.663
150. 0.8889 2285. 4.65
155. 1.208 2290. 4.649
160. 1.515 2295. 4.64
165. 1.873 2300. 4.639
170. 2.213 2305. 4.618
175. 2.553 2310. 4.608
180. 2.799 2315. 4.6
185. 3.038 2320. 4.571
190. 3.266 2325. 4.56
195. 3.491 2330. 4.531
200. 3.695 2335. 4.51
205. 3.797 2340. 4.489
210. 3.882 2345. 4.48
215. 3.952 2350. 4.459
220. 4.045 2355. 4.438
225. 4.118 2360. 4.42
230. 4.181 2365. 4.399
235. 4.247 2370. 4.378
240. 4.334 2375. 4.358
245. 4.382 2380. 4.337
250. 4.318 2385. 4.328
255. 4.267 2390. 4.317
260. 4.251 2395. 4.298
265. 4.27 2400. 4.276
270. 4.291 2405. 4.263
275. 4.313 2410. 4.241
280. 4.322 2415. 4.221
285. 4.322 2420. 4.199
290. 4.344 2425. 4.175
295. 4.335 2430. 4.176
300. 4.344 2435. 4.156
305. 4.357 2440. 4.135
310. 4.378 2445. 4.115
315. 4.438 2450. 4.107
320. 4.532 2455. 4.094
325. 4.644 2460. 4.063
330. 4.738 2465. 4.053
335. 4.832 2470. 4.031
340. 4.875 2475. 4.008
345. 4.876 2480. 3.998
350. 4.865 2485. 3.978
355. 4.864 2490. 3.967
360. 4.854 2495. 3.947
365. 4.853 2500. 3.93
11 /21 /22 2 12:50:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
fi 4.84 2505. 3.919
375. 4.85 2510. 3.911
380. 4.849 2515. 3.89
385. 4.838 2520. 3.881
390. 4.85 2525. 3.847
395. 4.851 2530. 3.838
400. 4.852 2535. 3.826
405. 4.852 2540. 3.808
410. 4.853 2545. 3.795
415. 4.863 2550. 3.774
420. 4.854 2555. 3.756
425. 4.842 2560. 3.735
430. 4.843 2565. 3.723
435. 4.843 2570. 3.702
440. 4.856 2575. 3.702
445. 4.855 2580. 3.687
450. 4.863 2585. 3.663
455. 4.841 2590. 3.657
460. 4.862 2595. 3.636
465. 4.861 2600. 3.615
470. 4.923 2605. 3.606
475. 4.974 2610. 3.593
480. 5.026 2615. 3.584
485. 5.078 2620. 3.553
490. 5.171 2625. 3.541
495. 5.232 2630. 3.531
500. 5.304 2635. 3.52
505. 5.346 2640. 3.503
510. 5.385 2645. 3.482
515. 5.427 2650. 3.471
520. 5.435 2655. 3.453
525. 5.447 2660. 3.454
530. 5.446 2665. 3.433
535. 5.54 2670. 3.412
540. 5.6 2675. 3.399
545. 5.663 2680. 3.381
550. 5.714 2685. 3.369
555. 5.765 2690. 3.359
560. 5.816 2695. 3.347
565. 5.868 2700. 3.317
570. 5.919 2705. 3.329
575. 5.971 2710. 3.308
580. 6.034 2715. 3.296
585. 6.095 2720. 3.287
590. 6.146 2725. 3.267
595. 6.21 2730. 3.258
600. 6.27 2735. 3.238
605. 6.312 2740. 3.227
610. 6.384 2745. 3.218
615. 6.435 2750. 3.219
620. 6.495 2755. 3.189
625. 6.549 2760. 3.177
630. 6.569 2765. 3.168
635. 6.632 2770. 3.159
640. 6.712 2775. 3.138
645. 6.784 2780. 3.138
650. 6.834 2785. 3.125
655. 6.876 2790. 3.116
660. 6.924 2795. 3.094
665. 6.966 2800. 3.084
670. 7.005 2805. 3.071
675. 7.036 2810. 3.062
680. 7.09 2815. 3.041
685. 7.131 2820. 3.032
690. 7.191 2825. 3.02
695. 7.25 2830. 3.
11 /21 /22 3 12:50:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
7U 7.292 2�i35. 2.9 /9
705. 7.342 2840. 2.979
710. 7.405 2845. 2.97
715. 7.465 2850. 2.949
720. 7.517 2855. 2.94
725. 7.569 2860. 2.919
730. 7.591 2865. 2.919
735. 7.562 2870. 2.91
740. 7.551 2875. 2.897
745. 7.542 2880. 2.875
750. 7.521 2885. 2.865
755. 7.521 2890. 2.852
760. 7.521 2895. 2.842
765. 7.254 2900. 2.831
770. 6.986 2905. 2.82
775. 6.956 2910. 2.812
780. 6.956 2915. 2.8
785. 6.946 2920. 2.792
790. 6.946 2925. 2.784
795. 6.934 2930. 2.773
800. 6.915 2935. 2.763
805. 6.927 2940. 2.741
810. 6.906 2945. 2.732
815. 6.906 2950. 2.719
820. 6.906 2955. 2.709
825. 6.885 2960. 2.696
830. 6.885 2965. 2.696
835. 6.876 2970. 2.676
840. 6.863 2975. 2.667
845. 6.863 2980. 2.667
850. 6.842 2985. 2.647
855. 6.841 2990. 2.638
860. 6.841 2995. 2.626
865. 6.823 3000. 2.616
870. 6.823 3005. 2.607
875. 6.802 3010. 2.594
880. 6.802 3015. 2.573
885. 6.79 3020. 2.585
890. 6.78 3025. 2.573
895. 6.78 3030. 2.552
900. 6.771 3035. 2.544
905. 6.771 3040. 2.544
910. 6.759 3045. 2.514
915. 6.759 3050. 2.524
920. 6.75 3055. 2.514
925. 6.739 3060. 2.492
930. 6.73 3065. 2.482
935. 6.718 3070. 2.469
940. 6.719 3075. 2.467
945. 6.698 3080. 2.457
950. 6.687 3085. 2.445
955. 6.686 3090. 2.437
960. 6.676 3095. 2.425
965. 6.664 3100. 2.417
970. 6.654 3105. 2.408
975. 6.644 3110. 2.396
980. 6.632 3115. 2.408
985. 6.631 3120. 2.373
990. 6.61 3125. 2.363
995. 6.591 3130. 2.362
1000. 6.579 3135. 2.34
1005. 6.569 3140. 2.339
1010. 6.578 3145. 2.331
1015. 6.557 3150. 2.32
1020. 6.548 3155. 2.312
1025. 6.536 3160. 2.301
11 /21 /22 4 12:50:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time (sec) Displacement (ft)
1 U3U. 6.536 31 b5. 2.302
1035. 6.518 3170. 2.294
1040. 6.518 3175. 2.285
1045. 6.518 3180. 2.273
1050. 6.506 3185. 2.264
1055. 6.498 3190. 2.252
1060. 6.498 3195. 2.243
1065. 6.478 3200. 2.243
1070. 6.478 3205. 2.234
1075. 6.469 3210. 2.223
1080. 6.469 3215. 2.214
1085. 6.448 3220. 2.214
1090. 6.448 3225. 2.202
1095. 6.436 3230. 2.194
1100. 6.427 3235. 2.184
1105. 6.415 3240. 2.172
1110. 6.406 3245. 2.163
1115. 6.398 3250. 2.15
1120. 6.398 3255. 2.141
1125. 6.398 3260. 2.141
1130. 6.377 3265. 2.129
1135. 6.387 3270. 2.12
1140. 6.366 3275. 2.121
1145. 6.358 3280. 2.112
1150. 6.358 3285. 2.112
1155. 6.337 3290. 2.091
1160. 6.35 3295. 2.079
1165. 6.331 3300. 2.079
1170. 6.328 3305. 2.079
1175. 6.327 3310. 2.07
1180. 6.317 3315. 2.061
1185. 6.295 3320. 2.061
1190. 6.295 3325. 2.04
1195. 6.282 3330. 2.028
1200. 6.276 3335. 2.018
1205. 6.275 3340. 2.018
1210. 6.275 3345. 2.018
1215. 6.263 3350. 1.997
1220. 6.241 3355. 1.996
1225. 6.232 3360. 1.996
1230. 6.232 3365. 1.996
1235. 6.232 3370. 1.987
1240. 6.211 3375. 1.987
1245. 6.211 3380. 1.966
1250. 6.202 3385. 1.966
1255. 6.202 3390. 1.954
1260. 6.189 3395. 1.945
1265. 6.18 3400. 1.936
1270. 6.17 3405. 1.936
1275. 6.17 3410. 1.924
1280. 6.157 3415. 1.903
1285. 6.149 3420. 1.915
1290. 6.15 3425. 1.902
1295. 6.139 3430. 1.893
1300. 6.139 3435. 1.892
1305. 6.119 3440. 1.88
1310. 6.12 3445. 1.871
1315. 6.108 3450. 1.862
1320. 6.098 3455. 1.863
1325. 6.086 3460. 1.851
1330. 6.086 3465. 1.852
1335. 6.076 3470. 1.852
1340. 6.064 3475. 1.843
1345. 6.064 3480. 1.83
1350. 6.056 3485. 1.83
1355. 6.044 3490. 1.811
11 /21 /22 5 12:50:07

AQTESOLV for Windows
Time (sec) Displacement (ft) Time sec) Displacement (ft)
1 36U. 6.036 3495. 1.82
1365. 6.037 3500. 1.811
1370. 6.016 3505. 1.811
1375. 6.029 3510. 1.799
1380. 6.017 3515. 1.799
1385. 6.009 3520. 1.79
1390. 5.997 3525. 1.777
1395. 5.988 3530. 1.79
1400. 5.989 3535. 1.769
1405. 5.98 3540. 1.77
1410. 5.979 3545. 1.77
1415. 5.958 3550. 1.762
1420. 5.966 3555. 1.751
1425. 5.957 3560. 1.751
1430. 5.935 3565. 1.742
1435. 5.935 3570. 1.73
1440. 5.929 3575. 1.721
1445. 5.917 3580. 1.72
1450. 5.916 3585. 1.708
1455. 5.916 3590. 1.708
1460. 5.895 3595. 1.699
1465. 5.895 3600. 1.691
1470. 5.895 3605. 1.701
1475. 5.886 3610. 1.692
1480. 5.874 3615. 1.681
1485. 5.874 3620. 1.682
1490. 5.856 3625. 1.682
1495. 5.856 3630. 1.683
1500. 5.856 3635. 1.674
1505. 5.835 3640. 1.674
1510. 5.822 3645. 1.654
1515. 5.822 3650. 1.654
1520. 5.813 3655. 1.653
1525. 5.805 3660. 1.643
1530. 5.805 3665. 1.642
1535. 5.793 3670. 1.629
1540. 5.793 3675. 1.619
1545. 5.785 3680. 1.627
1550. 5.773 3685. 1.618
1555. 5.773 3690. 1.606
1560. 5.763 3695. 1.606
1565. 5.751 3700. 1.596
1570. 5.751 3705. 1.596
1575. 5.742 3710. 1.596
1580. 5.732 3715. 1.576
1585. 5.72 3720. 1.576
1590. 5.732 3725. 1.576
1595. 5.719 3730. 1.582
1600. 5.698 3735. 1.568
1605. 5.697 3740. 1.568
1610. 5.688 3745. 1.571
1615. 5.679 3750. 1.562
1620. 5.673 3755. 1.55
1625. 5.667 3760. 1.55
1630. 5.667 3765. 1.55
1635. 5.658 3770. 1.541
1640. 5.658 3775. 1.54
1645. 5.646 3780. 1.539
1650. 5.636 3785. 1.526
1655. 5.637 3790. 1.525
1660. 5.638 3795. 1.515
1665. 5.627 3800. 1.514
1670. 5.622 3805. 1.515
1675. 5.622 3810. 1.507
1680. 5.612 3815. 1.517
1685. 5.6 3820. 1.509
11 /21 /22 6 12:50:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
1690. 5.599 3825. 1.498
1695. 5.599 3830. 1.511
1700. 5.59 3835. 1.499
1705. 5.577 3840. 1.49
1710. 5.568 3845. 1.49
1715. 5.568 3850. 1.49
1720. 5.558 3855. 1.478
1725. 5.543 3860. 1.469
1730. 5.534 3865. 1.468
1735. 5.533 3870. 1.468
1740. 5.533 3875. 1.467
1745. 5.515 3880. 1.457
1750. 5.514 3885. 1.457
1755. 5.514 3890. 1.456
1760. 5.492 3895. 1.443
1765. 5.484 3900. 1.434
1770. 5.484 3905. 1.434
1775. 5.473 3910. 1.434
1780. 5.465 3915. 1.433
1785. 5.453 3920. 1.421
1790. 5.454 3925. 1.412
1795. 5.454 3930. 1.422
1800. 5.444 3935. 1.414
1805. 5.443 3940. 1.403
1810. 5.434 3945. 1.403
1815. 5.412 3950. 1.395
1820. 5.408 3955. 1.395
1825. 5.397 3960. 1.395
1830. 5.391 3965. 1.396
1835. 5.377 3970. 1.375
1840. 5.368 3975. 1.387
1845. 5.36 3980. 1.376
1850. 5.349 3985. 1.375
1855. 5.349 3990. 1.374
1860. 5.339 3995. 1.374
1865. 5.327 4000. 1.373
1870. 5.327 4005. 1.363
1875. 5.327 4010. 1.351
1880. 5.317 4015. 1.35
1885. 5.305 4020. 1.349
1890. 5.306 4025. 1.339
1895. 5.297 4030. 1.339
1900. 5.276 4035. 1.338
1905. 5.276 4040. 1.337
1910. 5.268 4045. 1.332
1915. 5.267 4050. 1.333
1920. 5.254 4055. 1.325
1925. 5.236 4060. 1.326
1930. 5.244 4065. 1.328
1935. 5.234 4070. 1.329
1940. 5.222 4075. 1.307
1945. 5.222 4080. 1.307
1950. 5.222 4085. 1.306
1955. 5.202 4090. 1.317
1960. 5.193 4095. 1.304
1965. 5.193 4100. 1.295
1970. 5.194 4105. 1.304
1975. 5.182 4110. 1.284
1980. 5.173 4115. 1.285
1985. 5.164 4120. 1.285
1990. 5.164 4125. 1.277
1995. 5.164 4130. 1.278
2000. 5.143 4135. 1.277
2005. 5.143 4140. 1.277
2010. 5.143 4145. 1.277
2015. 5.132 4150. 1.276
11 /21 /22 7 12:50:07

AQTESOLV for Windows
Time sec) Displacement (ft) Time sec) Displacement (ft)
2U2U. 5.123 415b. 1.26 /
2025. 5.123 4160. 1.266
2030. 5.114 4165. 1.267
2035. 5.103 4170. 1.267
2040. 5.094 4175. 1.255
2045. 5.097 4180. 1.268
2050. 5.098 4185. 1.256
2055. 5.077 4190. 1.257
2060. 5.078 4195. 1.256
2065. 5.057 4200. 1.255
2070. 5.069 4205. 1.246
2075. 5.057 4210. 1.245
2080. 5.049 4215. 1.232
2085. 5.037 4220. 1.232
2090. 5.028 4225. 1.223
2095. 5.028 4230. 1.232
2100. 5.019 4235. 1.232
2105. 5.006 4240. 1.224
2110. 4.997 4245. 1.215
2115. 4.985 4250. 1.224
2120. 4.976 4255. 1.215
2125. 4.975 4260. 1.215
2130. 4.966 4265. 1.214
2135. 4.953 4270. 1.223
SOLUTION
Pumping Test
Aquifer Model: Confined
Solution Method: Theis (Step Test)
VISUAL ESTIMATION RESULTS
Estimated Parameters
Parameter Estimate
T 0.0002528 ft2/min
S 0.07002
Sw 0.
C 1. sec2/ft5
P 1.5
K = T/b = 4.213E-5 ft/min (2.14E-5 cm/sec)
Ss = S/b = 0.01167 1/ft
STEP TEST ANALYSIS RESULTS
Jacob-Rorabaugh Step Test Model: s(t) = BQ + CQP
t = 1.sec
Q in cu.ft/sec
B = 0.
C=1.
P = 1.5
Eden -Hazel Step Test Model: s(t) = (a + b Iog10(t))Q + CQP
Q in cu.ft/sec
a = -1.159E+5
b = 4.35E+4
C=1.
P = 1.5
Well Efficiency: 0.% (Q from last step)
11 /21 /22 8 12:50:07

Hydrogeological Conceptual Site Model Update — Badin Business Park
Attachment E 2022 Groundwater Elevation Measurements
EHS Support LLC

Attachment E
2022 Groundwater Elevation Data
Hydrogeological Conceptual Site Model Update
Alcoa Badin Works
Badin, North Carolina
Location
North Carolina State Plane
(NAD83)
Area
Screened
Lithology
Top of Casing
Elevation
(NAVD88 - ft)
Depth of
Well
(ft)
Screen
Depth to
Groundwater
9/8/2022
(ft)
Depth to
Groundwater
10/19/2022
(ft)
Groundwater
Elevation
9/8/2022
(NAVD88 - ft)
Groundwater
Elevation
10/19/2022
(NAVD88 - ft)
Length
(ft)
Depth
Elevation
Top
(ft)
Bottom
(ft)
Top
(NAVD88 - ft)
Bottom
(NAVD88 - ft)
Northing
Easting
ABL-MW-1
604447.26
1665212.55
ABL
PWR/Rock
541.46
45
10
35.00
45.00
506.46
496.46
27.96
28.88
513.50
512.58
ABL-MW-2
604044.58
1664817.44
ABL
Soil/Saprolite
541.04
60
10
37.00
47.00
504.04
494.04
31.52
--
509.52
--
ABL-MW-3
603645.35
1664413.84
ABL
Soil/PWR
478.46
14
10
4.00
14.00
474.46
464.46
1.98
2.10
476.48
476.36
ABL-MW-6
604195.10
1665433.47
ABL
PWR/Rock
538.03
35
10
25.00
35.00
513.03
503.03
31.00
30.02
507.03
508.01
ABL-PZ1D
604339.90
1665208.33
ABL
PWR/Rock
538.96
60
10
46.00
56.00
492.96
482.96
29.25
29.59
509.71
509.37
ABL-PZ1I
604339.90
1665208.33
ABL
PWR/Rock
538.84
60
10
30.00
40.00
508.84
498.84
25.34
26.14
513.50
512.70
ABL-PZ2D
603843.34
1665006.08
ABL
PWR/Rock
542.88
70
10
60.00
70.00
482.88
472.88
57.85
53.80
485.03
489.08
ABL-PZ3D
603147.17
1664782.10
ABL
PWR/Rock
469.82
50
10
40.00
50.00
429.82
419.82
--
4.96
--
464.86
ABL-PZ3I
603147.17
1664782.10
ABL
PWR/Rock
469.81
21
5
16.00
21.00
453.81
448.81
--
5.37
--
464.44
BF-1
605488.59
1666711.88
Main Plant
PWR/Rock
524.43
26
15
11.00
26.00
513.43
498.43
11.70
--
512.73
--
BF-2
605882.38
1666762.39
Main Plant
PWR/Rock
524.35
22
10
12.00
22.00
512.35
502.35
7.45
7.60
516.90
516.75
BF-5
605699.80
1666548.47
Main Plant
PWR
523.03
19
10
9.00
19.00
514.03
504.03
9.98
10.08
513.05
512.95
MW-1
606259.54
1666644.83
Main Plant
PWR
553.83
16
10
6.00
16.00
547.83
537.83
30.41
31.28
523.42
522.55
MW-10
606079.81
1667465.73
Main Plant
PWR
530.11
32
10
21.00
31.00
509.11
499.11
20.92
21.83
509.19
508.28
MW-103
604590.93
1665804.52
Main Plant
PWR
521.05
12
8
4.00
12.00
517.05
509.05
8.00
9.41
513.05
511.64
MW-104
604472.39
1666436.25
Main Plant
Soil/PWR
520.36
18
10
8.00
18.00
512.36
502.36
11.11
12.61
509.25
507.75
MW-105
605349.07
1667456.16
Main Plant
Soil/PWR
524.31
27
20
7.00
27.00
517.31
497.31
16.27
16.77
508.04
507.54
MW-108
606618.59
1667682.80
Main Plant
PWR
516.61
27
20
7.00
27.00
509.61
489.61
8.32
8.81
508.29
507.80
MW-109
607422.52
1667293.03
Main Plant
PWR
529.76
33
25
8.00
33.00
521.76
496.76
19.91
20.17
509.85
509.59
MW-110
607381.17
1667557.80
Main Plant
Soil/Saprolite
511.34
15
10
5.00
15.00
506.34
496.34
2.89
3.35
508.45
507.99
MW-12
607176.82
1667080.19
Main Plant
PWR
534.73
22
10
10.50
20.50
524.23
514.23
21.22
22.28
513.51
512.45
MW-13
606701.85
1666721.09
Main Plant
PWR
548.02
34
10
23.00
33.00
525.02
515.02
26.97
27.14
521.05
520.88
MW-15
606319.01
1667010.68
Main Plant
Saprolite/PWR
525.28
20
10
8.00
18.00
517.28
507.28
13.08
12.44
512.20
512.84
MW-16
607350.77
1667524.73
Main Plant
PWR
519.31
18
10
7.50
17.50
511.81
501.81
10.83
11.35
508.48
507.96
MW-17
607009.17
1667614.88
Main Plant
Saprolite/PWR
514.19
19
10
9.00
19.00
505.19
495.19
--
6.84
--
507.35
MW-18
607269.85
1666836.76
Main Plant
PWR
553.51
43
10
33.00
43.00
520.51
510.51
--
35.14
--
518.37
MW-19
607642.38
1667054.87
Main Plant
PWR
546.39
49
20
29.00
49.00
517.39
497.39
33.11
32.62
513.28
513.77
MW-2
606711.02
1666915.21
Main Plant
Saprolite/PWR
537.75
25
10
15.00
25.00
522.75
512.75
21.52
21.53
516.23
516.22
MW-20A
606909.13
1666865.86
Main Plant
PWR
544.01
40
10
29.00
39.00
515.01
505.01
24.14
24.35
519.87
519.66
MW-25A
606855.74
1667583.47
Main Plant
PWR/Rock
514.07
44
10
34.00
44.00
480.07
470.07
--
6.24
--
507.83
MW-28
605925.15
1666188.54
Main Plant
PWR
563.97
54
10
44.00
54.00
519.97
509.97
31.01
31.49
532.96
532.48
MW-29
606079.91
1666577.46
Main Plant
PWR
557.38
44
10
34.00
44.00
523.38
513.38
28.35
29.58
529.03
527.80
MW-2A
606720.47
1666920.46
Main Plant
PWR/Rock
537.68
47
10
37.00
47.00
500.68
490.68
21.95
21.82
515.73
515.86
MW-3
607091.91
1666868.05
Main Plant
PWR
541.01
28
10
14.00
24.00
527.01
517.01
17.81
18.50
523.20
522.51
MW-32
605933.11
1666645.45
Main Plant
PWR/Rock
528.00
20
10
10.00
20.00
518.00
508.00
9.21
9.07
518.79
518.93
MW-6A
606792.14
1667080.69
Main Plant
PWR/Rock
524.17
53
5
48.00
53.00
476.17
471.17
8.70
8.55
515.47
515.62
MW-7
606354.88
1666409.71
Main Plant
PWR
564.79
38
10
27.50
37.50
537.29
527.29
--
31.91
--
532.88
MW-8
607011.13
1667335.06
Main Plant
PWR
522.08
24
10
13.50
23.50
508.58
498.58
12.62
13.75
509.46
508.33
MW-9
607277.50
1667378.87
Main Plant
PWR
528.39
24
10
14.00
24.00
514.39
504.39
18.72
19.91
509.67
508.48
MW-200
607450.13
1667258.64
Main Plant
Saprolite/PWR
533.11
41.5
10
31.5
41.5
501.61
491.61
22.95
23.01
510.16
510.10
MW-201
607025.48
1667544.53
Main Plant
PWR
521.02
41.0
10
31.0
41.0
490.02
480.02
12.55
13.14
508.47
507.88
MW-202
606606.87
1667742.26
Main Plant
PWR
515.63
42.0
10
32.0
42.0
483.63
473.63
7.10
7.58
508.53
508.05
MW-203
606114.16
1667729.12
Main Plant
PWR
524.42
42.0
10
32.0
42.0
492.42
482.42
15.30
16.16
509.12
508.26
EHS e1,4 Support
Page 1 of 2

Attachment E
2022 Groundwater Elevation Data
Hydrogeological Conceptual Site Model Update
Alcoa Badin Works
Badin, North Carolina
Location
North Carolina State Plane
(NAD83)
Area
Screened
Lithology
Top of Casing
Elevation
(NAVD88 - ft)
Depth of
Well
(ft)
Screen
Depth to
Groundwater
9/8/2022
(ft)
Depth to
Groundwater
10/19/2022
(ft)
Groundwater
Elevation
9/8/2022
(NAVD88 - ft)
Groundwater
Elevation
10/19/2022
(NAVD88 - ft)
Length
(ft)
Depth
Elevation
Top
(ft)
Bottom
(ft)
Top
(NAVD88 - ft)
Bottom
(NAVD88 - ft)
Northing
Easting
MW-204
605752.38
1667637.74
Main Plant
PWR
520.67
41.5
10
31.5
41.5
489.17
479.17
12.28
12.82
508.39
507.85
MW-205
605403.63
1667456.53
Main Plant
PWR
523.85
31.0
10
21.0
31.0
502.85
492.85
15.74
16.29
508.11
507.56
MW-206
604969.97
1667700.33
Off -site
PWR
511.87
35.0
10
25.0
35.0
486.87
476.87
3.75
4.10
508.12
507.77
MW-207
604561.78
1668227.00
Off -site
PWR
512.34
15.0
5
10.0
15.0
502.34
497.34
4.22
4.61
508.12
507.73
MW-208
604588.71
1667230.57
Main Plant
PWR
518.76
27.6
5
22.6
27.6
496.16
491.16
10.76
11.25
508.00
507.51
MW-209
604937.32
1666835.66
Main Plant
PWR
524.74
52.0
10
42.0
52.0
482.74
472.74
12.85
14.70
511.89
510.04
MW-210
604088.89
1666650.73
Main Plant
PWR
524.76
30.0
10
20.0
30.0
504.76
494.76
13.14
16.07
511.62
508.69
MW-211
604113.58
1665700.61
ABL
PWR
525.18
30.0
5
25.0
30.0
500.18
495.18
20.70
20.65
504.48
504.53
MW-212
603626.95
1665868.12
ABL
PWR
520.31
35.0
5
30.0
35.0
490.31
485.31
17.10
18.00
503.21
502.31
MW-213
602992.07
1666448.96
Off -site
PWR
520.46
78.5
20
58.5
78.5
461.96
441.96
22.90
22.76
497.56
497.70
MW-214
602223.77
1667887.88
Off -site
PWR
495.35
35.0
5
30.0
35.0
465.35
460.35
10.12
8.43
485.23
486.92
MW-215
604050.81
1664883.72
ABL
PWR
532.70
40.0
5
35.0
40.0
497.70
492.70
27.60
27.84
505.10
504.86
MW-216
603327.28
1665460.95
ABL
PWR
518.84
59.5
10
50.0
59.5
468.84
459.34
46.60
46.12
472.24
472.72
MW-217
606754.38
1667085.60
Main Plant
PWR
524.82
25.0
5
20.0
25.0
504.82
499.82
10.55
10.45
514.27
514.37
MW-218
606108.94
1666305.64
Main Plant
PWR
563.52
43.0
5
38.0
43.0
525.52
520.52
30.04
30.91
533.48
532.61
MW-219
606275.65
1666375.59
Main Plant
PWR
565.80
40.0
5
35.0
40.0
530.80
525.80
32.19
33.13
533.61
532.67
MW-220
605193.28
1666134.67
Main Plant
PWR
524.59
16.0
5
11.0
16.0
513.59
508.59
8.42
9.37
516.17
515.22
PZ-18RD
603200.77
1665127.62
ABL
PWR
476.94
35.0
5
30.0
35.0
446.94
441.94
10.63
10.44
466.31
466.50
Notes:
= not relevant
ABL = Alcoa Badin Landfill
ft = feet
NAD83 = North American Datum of 1983
NAVD88 = North American Vertical Datum of 1988
PWR = partially weathered rock
EHS 3 Support
Page 2 of 2

Hydrogeological Conceptual Site Model Update — Badin Business Park
Attachment F 2022 Field Parameter and Analytical Data
EHS Support LLC

LOW FLOW SAMPLING DATA SHEET
Site: Badin Business Park
Project No.: 300-226 Date: 8/18/2022
Civil & Environmental Consultants, Inc.
Personnel: M. Worden
Total Depth: 46.4 FT BTOC
Depth to Top of Screen: 38-43 FT BGS
Well Diameter (in.): 2
Date/Time of Pump Installation:
8/1/2022
Pump Type: Bladder
Well #: MW-218
Static Water Level: 28.73 FT
BTOC
Pump Depth: 45 FT BTOC
Water Level after Pump Installation: NR
Time of Purge Initiation: 09:50
TIME
FLOW
RATE
(mL/min(
TURBIDITY
(NTU)
pH
(S.U.)
CI
(mg/L)
ORP
(mV)
Diss.
Oxygen
(mg/L)
SP. COND.
(mS/cm)
Appeara
nce
TEMP.
(°C)
TDS
(PPm)
WATER
LEVEL
(BTOC)
DRAW-
DOWN
(ft)
MAX
ALLOW.
DD
(ft)
Other Field Measurements:
Static water:
28.73' BTOC
26.0' Ground
TD: 46.4' BTOC
9:50
Start
10:20
140
46.1
5.24
NA
214
7.25
0.058
NR
21.7
NA
31.90
NR
NA
10:25
140
50.1
5.23
NA
216
8.31
0.058
NR
21.79
NA
32.14
NR
NA
Notes:
Fill: 6.0
Discharge: 2.0
10:30
140
24.6
5.22
NA
217
8.63
0.058
NR
21.84
NA
32.39
NR
NA
10:35
140
24.3
5.21
NA
218
8.72
0.058
NR
21.78
NA
32.51
NR
NA
10:40
140
21.9
5.21
NA
215
8.81
0.058
NR
21.78
NA
32.70
NR
NA
10:45
140
21.2
5.21
NA
220
8.86
0.058
NR
21.81
NA
32.75
NR
NA
Deviations from SAP:
FIELD MEASUREMENTS AT TIME OF SAMPLE
Date: 8/18/2022
Time: 10:45
Water Level: 32.75 FT BTOC
pH (S.U.): 5.21
CI (mg/L): NA
TDS (ppm): NA
Spec. Cond. (mS/cm): 0.058
ORP (mV): 220
Diss. Oxygen (mg/L): 8.86
Turbidity (NTU): 140
Odor: None
Volume Removed: 4200 mL
Color/Appearance:
Page 1 of 8

LOW FLOW SAMPLING DATA SHEET
Site: Badin Business Park
Project No.: 300-226 Date: 8/18/2022
Civil & Environmental Consultants, Inc.
Personnel: M. Worden
Total Depth: 42.6 FT BTOC
Depth to Top of Screen: 35-40 FT BGS
Well Diameter (in.): 2
Date/Time of Pump Installation:
8/18/2022
Pump Type: Bladder
Well #: MW-219
Static Water Level: 31.85
FT BTOC
Pump Depth: 39 FT BTOC
Water Level after Pump Installation: NR
Time of Purge Initiation: 11:20
TIME
FLOW
RATE
(mL/min)
TURBIDITY
(NTU)
pH
(S.U.)
CI
(mg/L)
ORP
(mV)
Diss.
Oxygen
(mg/L)
SP. COND.
(mS/cm)
Appeara
nce
TEMP.
(°C)
TDS
(PPm)
WATER
LEVEL
(BTOC)
DRAW-
DOWN
(ft)
MAX
ALLOW.
DD
(ft)
Other Field Measurements:
Static water
31.85' BTOC
28.05' Ground
TD: 42.6' BTOC
11:20
Start
11:40
140
53.8
6.29
NA
140
7.25
0.139
NR
21.54
NA
32.80
NR
NA
11:45
140
54.7
6.17
NA
144
6.30
0.141
NR
21.30
NA
33.01
NR
NA
Notes:
Fill: 6.0
Discharge: 2.0
11:50
140
60.5
6.13
NA
146
5.67
0.141
NR
21.06
NA
33.22
NR
NA
11:55
140
56.8
6.10
NA
149
6.05
0.140
NR
20.86
NA
33.35
NR
NA
12:00
140
57.7
6.10
NA
150
5.97
0.138
NR
20.89
NA
33.42
NR
NA
12:05
140
55.9
6.11
NA
151
6.00
0.138
NR
20.80
NA
33.46
NR
NA
Deviations from SAP:
FIELD MEASUREMENTS AT TIME OF SAMPLE
Date: 8/18/2022
Time: 12:05
Water Level: 33.46 FT BTOC
pH (S.U.): 6.11
CI (mg/L): NA
TDS (ppm): NA
Spec. Cond. (mS/cm): 0.138
ORP (mV): 151
Diss. Oxygen (mg/L): 6.00
Turbidity (NTU): 55.9
Odor: None
Volume Removed: 4200 mL
Color/Appearance:
Page 2 of 8

LOW FLOW SAMPLING DATA SHEET
Site: Badin Business Park
Project No.: 300-226 Date: 8/17/2022
Civil & Environmental Consultants, Inc.
Personnel: M. Worden
Total Depth: 77.5 FT BTOC
Depth to Top of Screen: 60-80 FT BGS
Well Diameter (in.): 2
Date/Time of Pump Installation:
8/17/2022
Pump Type: Bladder
Well #: B-300
Static Water Level: 28.85 FT
BTOC
Pump Depth: 65 FT BTOC
Water Level after Pump Installation: NR
Time of Purge Initiation: 18:30
TIME
FLOW
RATE
(mL/min)
TURBIDITY
(NTU)
pH
(S.U.)
CI
(mg/L)
ORP
(mV)
Diss.
Oxygen
(mg/L)
SP. COND.
(mS/cm)
Appeara
nce
TEMP.
(°C)
TDS
(PPm)
WATER
LEVEL
(BTOC)
DRAW-
DOWN
(ft)
MAX
ALLOW.
DD
(ft)
Other Field Measurements:
Static water
28.85' BTOC
27.02' Ground
TD: 77.5' BTOC
18:30
Start
18:40
90
355
5.22
NA
209
1.12
0.073
NR
21.10
NA
29.02
NR
NA
18:45
140
294
5.06
NA
221
0.97
0.072
NR
20.46
NA
29.10
NR
NA
Notes:
Fill: 6.0
Discharge: 2.0
18:50
140
260
5.04
NA
227
0.96
0.072
NR
20.16
NA
29.17
NR
NA
18:55
140
246
5.02
NA
232
0.89
0.073
NR
19.91
NA
29.21
NR
NA
19:00
140
200
5.00
NA
233
0.87
0.073
NR
19.87
NA
29.31
NR
NA
19:05
140
218
5.03
NA
232
0.88
0.073
NR
19.91
NA
29.36
NR
NA
Deviations from SAP:
FIELD MEASUREMENTS AT TIME OF SAMPLE
Date: 8/17/2022
Time:19:10
Water Level: 29.36 FT BTOC
pH (S.U.): 5.03
CI (mg/L): NA
TDS (ppm): NA
Spec. Cond. (mS/cm): 0.073
ORP (mV): 232
Diss. Oxygen (mg/L): 0.88
Turbidity (NTU): 218
Odor: none
Volume Removed: 3950 mL
Color/Appearance:
Page 3 of 8

LOW FLOW SAMPLING DATA SHEET
Site: Badin Business Park
Project No.: 300-226 Date: 8/18/2022
Civil & Environmental Consultants, Inc.
Personnel: M. Worden
Total Depth: 37.25 FT BTOC
Depth to Top of Screen: 30-35 FT BGS
Well Diameter (in.): 1
Date/Time of Pump Installation:
8/18/2022
Pump Type: Bladder
Well #: B-301
Static Water Level: 26.85 FT
BTOC
Pump Depth: 36 FT BTOC
Water Level after Pump Installation: NR
Time of Purge Initiation: 08:10
TIME
FLOW
RATE
(mL/min)
TURBIDITY
(NTU)
pH
(S.U.)
CI
(mg/L)
ORP
(mV)
Diss.
Oxygen
(mg/L)
SP. COND.
(mS/cm)
Appeara
nce
TEMP.
(°C)
TDS
(PPm)
WATER
LEVEL
(BTOC)
DRAW-
DOWN
(ft)
MAX
ALLOW.
DD
(ft)
Other Field Measurements:
Static water
26.83' BTOC
24.50' Ground
TD: 37.25' BTOC
8:10
Sta t-Turbid Discharge
8:30
-
482
6.07
NA
197
3.58
0.123
NR
20.02
NA
27.95
NR
NA
8:35
130
325
5.48
NA
199
3.02
0.117
NR
19.31
NA
28.02
NR
NA
Notes:
Field calibrate U52 water quality meter
Fill: 6.0
Discharge: 2.0
8:40
140
247
5.15
NA
203
2.85
0.113
NR
19.07
NA
28.08
NR
NA
8:45
140
217
5.03
NA
209
2.88
0.111
NR
18.95
NA
28.08
NR
NA
8:50
140
170
4.95
NA
217
3.03
0.110
NR
18.77
NA
28.16
NR
NA
8:55
140
171
4.94
NA
217
3.07
0.109
NR
18.78
NA
28.19
NR
NA
9:00
140
145
4.92
NA
220
3.11
0.109
NR
18.76
NA
28.22
NR
NA
Deviations from SAP:
FIELD MEASUREMENTS AT TIME OF SAMPLE
Date: 8/18/2022
Time: 09:05
Water Level: 28.22 FT BTOC
pH (S.U.): 4.92
CI (mg/L): NA
TDS (ppm): NA
Spec. Cond. (mS/cm): 0.109
ORP (mV): 220
Diss. Oxygen (mg/L): 3.11
Turbidity (NTU): 145
Odor: None
Volume Removed: 4150 mL
Color/Appearance:
Page 4 of 8

Site: Badin Business Park
LOW FLOW SAMPLING DATA SHEET
Project No.: 300-226 Date: 8/17/2022
Civil & Environmental Consultants, Inc.
Personnel: M. Worden/C. Ziegler
Total Depth: 41.0 FT BTOC
Depth to Top of Screen: 35-40 FT BGS
Well Diameter (in.): 1
Date/Time of Pump Installation:
8/17/2022
Pump Type: Bladder
Well #: B-302
Static Water Level: 31.42 FT
BTOC
Pump Depth: 35 FT BTOC
Water Level after Pump Installation: NR
Time of Purge Initiation: 17:11
TIME
FLOW
RATE
(mL/min)
TURBIDITY
(NTU)
pH
(S.U.)
CI
(mg/L)
ORP
(mV)
Diss.
Oxygen
(mg/L)
SP. COND.
(mS/cm)
Appeara
nce
TEMP.
(°C)
TDS
(ppm)
WATER
LEVEL
(BTOC)
DRAW-
DOWN
(ft)
MAX
ALLOW.
DD
(ft)
Other Field Measurements:
Static water
31.42' BTOC
30.3' Ground
TD: 41.0' BTOC
17:11
Start
17:25
120
288
5.11
NA
187
1.81
0.101
NR
21.35
NA
31.50
NR
NA
17:30
80
153
5.04
NA
201
2.48
0.097
NR
21.05
NA
31.50
NR
NA
Notes:
17:35
100
86.7
5.00
NA
214
2.46
0.094
NR
20.60
NA
31.50
NR
NA
17:40
90
53.6
4.98
NA
221
3.35
0.092
NR
20.57
NA
31.50
NR
NA
17:45
100
26.0
4.96
NA
229
3.00
0.091
NR
20.58
NA
31.50
NR
NA
17:50
100
14.3
4.91
NA
237
3.42
0.089
NR
20.35
NA
31.50
NR
NA
17:55
100
7.1
4.91
NA
242
3.85
0.087
NR
20.40
NA
31.50
NR
NA
18:00
100
5.5
4.90
NA
246
4.03
0.087
NR
20.46
NA
31.50
NR
NA
Deviations from SAP:
FIELD MEASUREMENTS AT TIME OF SAMPLE
Date:8/17/2022
Time: 18:00
Water Level: 31.50 FT BTOC
pH (S.U.): 4.90
CI (mg/L): NA
TDS (ppm): NA
Spec. Cond. (mS/cm): 0.087
ORP (mV): 246
Diss. Oxygen (mg/L): 4.03
Turbidity (NTU): 5.5
Odor: None
Volume Removed: 3950 mL
Color/Appearance:
Page 5 of 8

Site: Badin Business Park
LOW FLOW SAMPLING DATA SHEET
Project No.: 300-226 Date: 8/17/2022
Civil & Environmental Consultants, Inc.
Personnel: M. Worden/C. Ziegler
Total Depth: 43.3 FT BTOC
Depth to Top of Screen: 35-40 FT BGS
Well Diameter (in.): 2
Date/Time of Pump Installation:
8/17/2022
Pump Type: Bladder
Well #: B-303
Static Water Level: 30.43 FT
BTOC
Pump Depth: 40' BTOC
Water Level after Pump Installation: NR
Time of Purge Initiation: 15:50
TIME
FLOW
RATE
(mL/min)
TURBIDITY
(NTU)
pH
(S.U.)
CI
(mg/L)
ORP
(mV)
Diss.
Oxygen
(mg/L)
SP. COND.
(mS/cm)
Appeara
nce
TEMP.
(°C)
TDS
(ppm)
WATER
LEVEL
(BTOC)
DRAW-
DOWN
(ft)
MAX
ALLOW.
DD
(ft)
Other Field Measurements:
Static water:
30.43 ' BTOC
27 9' Ground
TD: 43.3' BTOC
15:50
Start
16:05
120
46.8
5.34
NA
178
4.77
0.058
NR
21.73
NA
30.60
NR
NA
16:10
50
27.3
5.26
NA
184
4.64
0.059
NR
20.89
NA
30.86
NR
NA
Notes:
16:15
80
28.2
5.25
NA
191
4.64
0.059
NR
20.38
NA
30.89
NR
NA
16:20
60
2.7
5.25
NA
195
4.30
0.059
NR
20.15
NA
30.89
NR
NA
16:25
60
0.0
5.23
NA
199
4.25
0.059
NR
20.29
NA
30.89
NR
NA
16:30
80
0.0
5.23
NA
204
4.40
0.059
NR
20.21
NA
30.89
NR
NA
16:35
60
0.0
5.23
NA
208
4.50
0.059
NR
20.13
NA
30.91
NR
NA
Deviations from SAP:
FIELD MEASUREMENTS AT TIME OF SAMPLE
Date: 8/17/2022
Time: 16:35
Water Level: 30.90 FT BTOC
pH (S.U.): 5.23
CI (mg/L): NA
TDS (ppm): NA
Spec. Cond. (mS/cm): 0.059
ORP (mV): 208
Diss. Oxygen (mg/L): 4.50
Turbidity (NTU): 0
Odor: None
Volume Removed: 2550 mL
Color/Appearance:
Page 6 of 8

Site: Badin Business Park
LOW FLOW SAMPLING DATA SHEET
Project No.: 300-226 Date: 8/17/2022
Civil & Environmental Consultants, Inc.
Personnel: M. Worden/C. Ziegler
Total Depth: 37.1 FT BTOC
Depth to Top of Screen: 33-38 FT BGS
Well Diameter (in.): 2
Date/Time of Pump Installation:
8/17/2022
Pump Type: Bladder
Well #: B-304
Static Water Level: 24.92
FT BTOC
Pump Depth: 35 FT BTOC
Water Level after Pump Installation: NR
Time of Purge Initiation: 14:00
TIME
FLOW
RATE
(mL/min)
TURBIDITY
(NTU)
pH
(S.U.)
CI
(mg/L)
ORP
(mV)
Diss.
Oxygen
(mg/L)
SP. COND.
(mS/cm)
Appeara
nce
TEMP.
(°C)
TDS
(ppm)
WATER
LEVEL
(BTOC)
DRAW-
DOWN
(ft)
MAX
ALLOW.
DD
(ft)
Other Field Measurements:
Static water
24.92' BTOC
23.6' Ground
TD: 37.1' BTOC
14:00
Start
14:20
100
615
6.68
NA
120
0.35
0.221
NR
22.19
NA
25.25
NR
NA
14:25
90
693
6.58
NA
112
0.37
0.208
NR
21.90
NA
25.26
NR
NA
Notes:
14:30
90
847
6.46
NA
101
0.43
0.201
NR
21.62
NA
25.26
NR
NA
14:35
100
882
6.36
NA
91
0.53
0.197
NR
21.39
NA
25.26
NR
NA
14:40
90
863
6.29
NA
85
1.16
0.195
NR
21.22
NA
25.26
NR
NA
14:45
100
810
6.26
NA
82
2.40
0.198
NR
21.10
NA
25.26
NR
NA
14:50
100
765
6.28
NA
81
3.08
0.199
NR
21.08
NA
25.26
NR
NA
14:55
100
636
6.30
NA
82
3.33
0.197
NR
20.98
NA
25.26
NR
NA H
15:00
100
517
6.30
NA
81
3.19
0.195
NR
21.03
NA
25.26
NR
NA
15:05
110
425
6.29
NA
81
3.00
0.191
NR
21.03
NA
25.26
NR
NA
Deviations from SAP:
FIELD MEASUREMENTS AT TIME OF SAMPLE
Date: 8/17/2022
Time: 15:10
Water Level: 25.26 FT BTOC
pH (S.U.): 6.29
CI (mg/L): NA
TDS (ppm): NA
Spec. Cond. (mS/cm): 0.191
ORP (mV): 81
Diss. Oxygen (mg/L): 3.00
Turbidity (NTU): 425
Odor: None noted
Volume Removed: 4900 mL
Color/Appearance:
Page 7 of 8

LOW FLOW SAMPLING DATA SHEET
Site: Badin Business Park
Project No.: 300-226
Date: 8/17/2022
Civil & Environmental Consultants, Inc.
Personnel: M. Worden/C. Ziegler
Total Depth: 41.85 FT BTOC
Depth to Top of Screen: 35-40 FT BGS
Well Diameter (in.): 1
Date/Time of Pump Installation:
8/17/2022
Pump Type: Bladder
Well #: B-305
Static Water Level: 29.70
FT BTOC
Pump Depth: 40 FT BTOC
Water Level after Pump Installation: NR
Time of Purge Initiation: 11:50
TIME
FLOW
RATE
(mL/min
1
TURBIDITY
(NTU)
pH
(S.U.)
CI
(mg/L)
ORP
(mV)
Diss.
Oxygen
(mg/L)
SP. COND.
(µS/cm)
Appeara
nce
TEMP.
(°C)
TDS
(ppm)
WATER
LEVEL
(BTOC)
DRAW-
DOWN
(ft)
MAX
ALLOW.
DD
(ft)
Other Field Measurements:
Static water:
29.7 BTOC
Ground: N/A
11:50
Start- Turbid
12:10
0
>1000
NR
NA
NR
NR
NR
NR
NR
NA
NR
NR
NA
12:15
60
899
8.30
NA
168
7.60
0.051
NR
23.70
NA
30.38
NR
NA
Notes:
Fill: 10->6.0
Discharge: 5 -> 2.0
12:20
20
778
5.02
NA
182
7.43
0.048
NR
22.90
NA
30.34
NR
NA
12:25
15
763
4.94
NA
190
7.48
0.048
NR
22.61
NA
30.35
NR
NA
12:30
40
641
4.90
NA
200
8.57
0.047
NR
22.06
NA
30.65
NR
NA
12:35
70
685
4.85
NA
210
8.23
0.046
NR
21.54
NA
30.65
NR
NA
12:40
60
605
4.80
NA
219
7.93
0.046
NR
21.36
NA
30.67
NR
NA
12:45
50
468
4.78
NA
223
7.85
0.046
NR
21.42
NA
30.71
NR
NA
12:50
50
428
4.75
NA
229
7.71
0.046
NR
21.41
NA
30.70
NR
NA
12:55
70
341
4.74
NA
234
7.74
0.046
NR
21.37
NA
30.77
NR
NA
Deviations from SAP:
13:00
80
305
4.71
NA
239
7.77
0.046
NR
21.01
NA
30.95
NR
NA
13:05
80
347
4.68
NA
245
7.73
0.046
NR
20.81
NA
30.98
NR
NA
13:10
80
266
4.67
NA
249
7.75
0.045
NR
20.74
NA
30.92
NR
NA
13:15
NM
253
4.67
NA
251
7.71
0.045
NR
20.69
NA
30.94
NR
NA
FIELD MEASUREMENTS AT TIME OF SAMPLE
Date: 8/17/2022
Time: 13:20
Water Level: 30.94 FT BTOC
pH (S.U.): 4.67
CI (mg/L): NA
TDS (ppm): NA
Spec. Cond. (mS/cm): 0.045
ORP (mV): 251
Diss. Oxygen (mg/L): 7.71
Turbidity (NTU): 253
Odor: None noted
Volume Removed: 3775 mL
Color/Appearance:
Page 8 of 8

LINKS
Review your project
results through
A F
•� E O L
Have a Question?
' Ask
/The
Ex ert
LVisit us at:
wwweu rofi nsu s. com/E nv
eurofins
Environment Testing
America
ANALYTICAL REPORT
Eurofins Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Tel: [phone]
Laboratory Job ID: 680-219919-1
Client Project/Site: Alcoa - Badin NC (GW)
For:
Civil & Environmental Consultants Inc
2704 Cherokee Farm Way
Suite 101
Knoxville, Tennessee 37920
Attn: Michael Worden
)6
Authorized for release by:
8/29/2022 3:08:34 PM
Sheila Hoffman, Project Manager II
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI
requirements for accredited parameters, exceptions are noted in this report. This
report may not be reproduced except in full, and with written approval from the
laboratory. For questions please contact the Project Manager at the e-mail address or
telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic
signature is intended to be the legally binding equivalent of a traditionally handwritten
signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Method Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Method Method Description Protocol Laboratory
300.0-1993 R2.1 Anions, Ion Chromatography MCAWW EET SAV
D7511-12 Total Cyanide ASTM ELLE
OIA-1677 Cyanide, Available (Flow Injection) 01 CORP EET PIT
OIA-1677 Cyanide, Free (Flow Injection) 01 CORP EET PIT
Protocol References:
ASTM = ASTM International
MCAWW = "Methods For Chemical Analysis Of Water And Wastes", EPA-600/4-79-020, March 1983 And Subsequent Revisions.
01 CORP = 01 Corporation Instrument Manual.
Laboratory References:
EET PIT = Eurofins Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
EET SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
ELLE = Eurofins Lancaster Laboratories Environment Testing, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
Eurofins Savannah
Page 2 of 23 8/29/2022

Sample Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Lab Sample ID Client Sample ID Matrix Collected Received
680-219919-1 B300 Water 08/17/22 19:10 08/19/22 09:30
680-219919-2 B301 Water 08/18/22 09:05 08/19/22 09:30
680-219919-3 B302 Water 08/17/22 18:00 08/19/22 09:30
680-219919-4 B303 Water 08/17/22 16:35 08/19/22 09:30
680-219919-5 B304 Water 08/17/22 15:10 08/19/22 09:30
680-219919-6 B305 Water 08/17/22 13:20 08/19/22 09:30
680-219919-7 MW 219 Water 08/18/22 12:05 08/19/22 09:30
680-219919-8 MW218 Water 08/18/22 10:45 08/19/22 09:30
Eurofins Savannah
Page 3 of 23 8/29/2022

Definitions/Glossary
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Qualifiers
HPLC/IC
Qualifier
Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
General Chemistry
Qualifier Qualifier Description
F1
J
MS and/or MSD recovery exceeds control limits.
Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins Savannah
Page 4 of 23 8/29/2022

Case Narrative
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Job ID: 680-219919-1
Laboratory: Eurofins Savannah
Narrative
Job Narrative
680-219919-1
Receipt
The samples were received on 8/19/2022 9:30 AM. Unless otherwise noted below, the samples arrived in good condition, and, where
required, properly preserved and on ice. The temperatures of the 2 coolers at receipt time were 2.0°C and 2.9°C
HPLC/IC
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
General Chemistry
Method 1677_Free: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 180-410147 were outside control
limits. Sample matrix interference and/or non -homogeneity are suspected because the associated laboratory control sample (LCS)
recovery was within acceptance limits.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
Eurofins Savannah
Page 5 of 23 8/29/2022

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Client Sample ID: B300
Date Collected: 08/17/22 19:10
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-1
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride <0.040 0.10 0.040 mg/L 08/24/22 18:21 1
General Chemistry
Analyte
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Available
Cyanide, Free
<0.0020
0.0043
<0.00079 F1
0.0060 0.0020 mg/L 08/23/22 07:58 1
0.0020 0.0016 mg/L 08/27/22 10:51 1
0.0020 0.00079 mg/L 08/26/22 12:02 1
Client Sample ID: B301
Date Collected: 08/18/22 09:05
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-2
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride 0.042 J 0.10 0.040 mg/L 08/24/22 18:34 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020 0.0060 0.0020 mg/L 08/23/22 08:05 1
Cyanide, Available <0.0016 0.0020 0.0016 mg/L 08/27/22 11:01 1
Cyanide, Free 0.00080 J 0.0020 0.00079 mg/L 08/26/22 12:07 1
Client Sample ID: B302
Date Collected: 08/17/22 18:00
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-3
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride <0.040 0.10 0.040 mg/L 08/24/22 18:46 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020 0.0060 0.0020 mg/L 08/23/22 08:07 1
Cyanide, Available <0.0016 0.0020 0.0016 mg/L 08/27/22 10:55 1
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 08/26/22 12:14 1
Client Sample ID: B303
Date Collected: 08/17/22 16:35
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-4
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride <0.040 0.10 0.040 mg/L 08/24/22 18:59 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020 0.0060 0.0020 mg/L 08/23/22 08:09 1
Cyanide, Available <0.0016 0.0020 0.0016 mg/L 08/27/22 10:57 1
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 08/26/22 12:16 1
Eurofins Savannah
Page 6 of 23 8/29/2022

Client Sample Results
Client: Civil & Environmental Consultants Inc
Project/Site: Alcoa - Badin NC (GW)
Client Sample ID: B304
Date Collected: 08/17/22 15:10
Date Received: 08/19/22 09:30
Job ID: 680-219919-1
Lab Sample ID: 680-219919-5
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier
RL
MDL Unit
Fluoride
General Chemistry
Analyte
0.17
Result Qualifier
0.10
RL
0.040 mg/L
MDL Unit
D Prepared
Analyzed Dil Fac
D Prepared
Cyanide, Total
Cyanide, Available
Cyanide, Free
<0.0020
<0.0016
<0.00079
0.0060
0.0020
0.0020
0.0020 mg/L
0.0016 mg/L
0.00079 mg/L
08/24/22 19:12 1
Analyzed Dil Fac
08/23/22 08:11 1
08/27/22 10:58 1
08/26/22 12:17 1
Client Sample ID: B305
Date Collected: 08/17/22 13:20
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-6
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier
RL
MDL Unit
D Prepared
Analyzed Dil Fac
Fluoride
General Chemistry
Analyte
<0.040
Result Qualifier
0.10
RL
0.040 mg/L
MDL Unit
D Prepared
Cyanide, Total
Cyanide, Available
Cyanide, Free
<0.0020
<0.0016
<0.00079
0.0060
0.0020
0.0020
0.0020 mg/L
0.0016 mg/L
0.00079 mg/L
08/24/22 20:53 1
Analyzed Dil Fac
08/23/22 08:14 1
08/27/22 11:00 1
08/26/22 12:19 1
Client Sample ID: MW 219
Date Collected: 08/18/22 12:05
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-7
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier
RL
MDL Unit
D Prepared
Analyzed Dil Fac
Fluoride
General Chemistry
Analyte
0.075 J
Result Qualifier
0.10
RL
0.040 mg/L
MDL Unit
Cyanide, Total
Cyanide, Available
Cyanide, Free
<0.0020
<0.0016
<0.00079
0.0060
0.0020
0.0020
0.0020 mg/L
0.0016 mg/L
0.00079 mg/L
D Prepared
08/24/22 21:05 1
Analyzed Dil Fac
08/23/22 08:16 1
08/27/22 11:10 1
08/26/22 12:20 1
Client Sample ID: MW218
Date Collected: 08/18/22 10:45
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-8
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion
Analyte
Chromatography
Result Qualifier
RL
MDL Unit
D Prepared
Analyzed Dil Fac
Fluoride
General Chemistry
Analyte
<0.040
Result Qualifier
0.10
RL
0.040 mg/L
MDL Unit
Cyanide, Total
Cyanide, Available
Cyanide, Free
<0.0020
<0.0016
0.00089 J
0.0060
0.0020
0.0020
0.0020 mg/L
0.0016 mg/L
0.00079 mg/L
D Prepared
08/24/22 21:18 1
Analyzed Dil Fac
08/23/22 08:18 1
08/27/22 11:12 1
08/26/22 12:22 1
Eurofins Savannah
Page 7 of 23 8/29/2022

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Lab Sample ID: MB 680-737344/2
Matrix: Water
Analysis Batch: 737344
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride <0.040 0.10 0.040 mg/L 08/24/22 10:33 1
Lab Sample ID: LCS 680-737344/3
Matrix: Water
Analysis Batch: 737344
Analyte
Client Sample ID: Lab Control Sample E
Prep Type: Total/NA
Spike LCS LCS %Rec
Added Result Qualifier Unit D %Rec Limits
Fluoride
Lab Sample ID: LCSD 680-737344/4
Matrix: Water
Analysis Batch: 737344
Analyte
2.00 1.94 mg/L 97 90 - 110
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
Fluoride 2.00 1.95 mg/L 97 90 - 110 0 15
Lab Sample ID: MB 680-737345/41
Matrix: Water
Analysis Batch: 737345
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride <0.040 0.10 0.040 mg/L 08/24/22 19:37 1
Lab Sample ID: LCS 680-737345/72
Matrix: Water
Analysis Batch: 737345
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec
Added Result Qualifier Unit D %Rec Limits
Fluoride
Lab Sample ID: LCSD 680-737345/73
Matrix: Water
Analysis Batch: 737345
Analyte
2.00 1.97 mg/L 99 90 _ 110
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
Fluoride 2.00 1.97 mg/L 98 90 _ 110 0 15
Method: D7511-12 - Total Cyanide
Lab Sample ID: MB 410-288713/18
Matrix: Water
Analysis Batch: 288713
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020
0.0060 0.0020 mg/L
08/23/22 07:52 1
Eurofins Savannah
Page 8 of 23 8/29/2022

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Method: D7511-12 - Total Cyanide (Continued)
Lab Sample ID: LCS 410-288713/16
Matrix: Water
Analysis Batch: 288713
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec
Added Result Qualifier Unit D %Rec Limits
Cyanide, Total
Lab Sample ID: 680-219919-1 MS
Matrix: Water
Analysis Batch: 288713
Analyte
0.0500 0.0550 mg/L 110 84 _ 116
Client Sample ID: B300 E
Prep Type: Total/NA
Sample Sample Spike MS MS %Rec
Result Qualifier Added Result Qualifier Unit D %Rec Limits
Cyanide, Total <0.0020 0.0500 0.0429 mg/L 86 84 _ 116
Lab Sample ID: 680-219919-1 DU
Matrix: Water
Analysis Batch: 288713
Analyte
Client Sample ID: B300
Prep Type: Total/NA
Sample Sample DU DU RPD
Result Qualifier Result Qualifier Unit D RPD Limit
Cyanide, Total <0.0020
<0.0020 mg/L NC 20
Method: OIA-1677 - Cyanide, Free (Flow Injection)
Lab Sample ID: MB 180-410147/42
Matrix: Water
Analysis Batch: 410147
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 08/26/22 11:59 1
Lab Sample ID: LCS 180-410147/43
Matrix: Water
Analysis Batch: 410147
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec
Added Result Qualifier Unit D %Rec Limits
Cyanide, Free
Lab Sample ID: 680-219919-1 MS
Matrix: Water
Analysis Batch: 410147
Analyte
0.0500 0.0535 mg/L 107 82 - 132
Client Sample ID: B300
Prep Type: Total/NA
Sample Sample Spike MS MS %Rec
Result Qualifier Added Result Qualifier Unit D %Rec Limits
Cyanide, Free <0.00079 F1
Lab Sample ID: 680-219919-1 MSD
Matrix: Water
Analysis Batch: 410147
Analyte
0.0500 0.0688 F1 mg/L 138 82 - 130
Client Sample ID: B300
Prep Type: Total/NA
Sample Sample Spike MSD MSD %Rec RPD
Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit
Cyanide, Free <0.00079 F1
0.0500 0.0697 F1 mg/L 139 82 _ 130 1 11
Eurofins Savannah
Page 9 of 23 8/29/2022

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Method: OIA-1677 - Cyanide, Available (Flow Injection)
Lab Sample ID: MB 180-410229/22
Matrix: Water
Analysis Batch: 410229
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Available <0.0016
Lab Sample ID: LCS 180-410229/23
Matrix: Water
Analysis Batch: 410229
Analyte
0.0020 0.0016 mg/L
08/27/22 10:48 1
Client Sample ID: Lab Control Sample E
Prep Type: Total/NA
Spike LCS LCS %Rec
Added Result Qualifier Unit D %Rec Limits
Cyanide, Available
Lab Sample ID: 680-219919-1 MS
Matrix: Water
Analysis Batch: 410229
Analyte
0.0501 0.0529 mg/L 106 82 _ 132
Client Sample ID: B300
Prep Type: Total/NA
Sample Sample Spike MS MS %Rec
Result Qualifier Added Result Qualifier Unit D %Rec Limits
Cyanide, Available 0.0043
Lab Sample ID: 680-219919-1 MSD
Matrix: Water
Analysis Batch: 410229
Analyte
0.0501 0.0606 mg/L 113 82 - 130
Client Sample ID: B300
Prep Type: Total/NA
Sample Sample Spike MSD MSD %Rec RPD
Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit
Cyanide, Available 0.0043 0.0501 0.0616 mg/L 115 82 - 130 2 11
Eurofins Savannah
Page 10 of 23 8/29/2022

QC Association Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
HPLC/IC
Analysis Batch: 737344
Lab Sample ID Client Sample ID
Prep Type Matrix Method Prep Batch
680-219919-1 B300
680-219919-2 B301
680-219919-3 B302
680-219919-4 B303
680-219919-5 B304
MB 680-737344/2 Method Blank
LCS 680-737344/3 Lab Control Sample
LCSD 680-737344/4 Lab Control Sample Dup
Analysis Batch: 737345
Lab Sample ID Client Sample ID
Total/NA Water 300.0-1993 R2.1
Total/NA Water 300.0-1993 R2.1
Total/NA Water 300.0-1993 R2.1
Total/NA Water 300.0-1993 R2.1
Total/NA Water 300.0-1993 R2.1
Total/NA Water 300.0-1993 R2.1
Total/NA Water 300.0-1993 R2.1
Total/NA Water 300.0-1993 R2.1
Prep Type Matrix
Method
Prep Batch
680-219919-6 B305
680-219919-7 MW 219
680-219919-8 MW218
MB 680-737345/41 Method Blank
LCS 680-737345/72 Lab Control Sample
LCSD 680-737345/73 Lab Control Sample Dup
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Water
Water
Water
Water
Water
Water
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
General Chemistry
Analysis Batch: 288713
Lab Sample ID Client Sample ID
Prep Type Matrix Method Prep Batch
680-219919-1 B300 Total/NA Water D7511-12
680-219919-2 B301 Total/NA Water D7511-12
680-219919-3 B302 Total/NA Water D7511-12
680-219919-4 B303 Total/NA Water D7511-12
680-219919-5 B304 Total/NA Water D7511-12
680-219919-6 B305 Total/NA Water D7511-12
680-219919-7 MW 219 Total/NA Water D7511-12
680-219919-8 MW218 Total/NA Water D7511-12
MB 410-288713/18 Method Blank Total/NA Water D7511-12
LCS 410-288713/16 Lab Control Sample Total/NA Water D7511-12
680-219919-1 MS B300 Total/NA Water D7511-12
680-219919-1 DU B300 Total/NA Water D7511-12
Analysis Batch: 410147
Lab Sample ID Client Sample ID
Prep Type Matrix Method Prep Batch
680-219919-1 B300 Total/NA Water OIA-1677
680-219919-2 B301 Total/NA Water OIA-1677
680-219919-3 B302 Total/NA Water OIA-1677
680-219919-4 B303 Total/NA Water OIA-1677
680-219919-5 B304 Total/NA Water OIA-1677
680-219919-6 B305 Total/NA Water OIA-1677
680-219919-7 MW 219 Total/NA Water OIA-1677
680-219919-8 MW218 Total/NA Water OIA-1677
MB 180-410147/42 Method Blank Total/NA Water OIA-1677
LCS 180-410147/43 Lab Control Sample Total/NA Water OIA-1677
680-219919-1 MS B300 Total/NA Water OIA-1677
680-219919-1 MSD B300 Total/NA Water OIA-1677
Eurofins Savannah
Page 11 of 23 8/29/2022

QC Association Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
General Chemistry
Analysis Batch: 410229
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
680-219919-1 B300 Total/NA Water OIA-1677
680-219919-2 B301 Total/NA Water OIA-1677
680-219919-3 B302 Total/NA Water OIA-1677
680-219919-4 B303 Total/NA Water OIA-1677
680-219919-5 B304 Total/NA Water OIA-1677
680-219919-6 B305 Total/NA Water OIA-1677
680-219919-7 MW 219 Total/NA Water OIA-1677
680-219919-8 MW218 Total/NA Water OIA-1677
MB 180-410229/22 Method Blank Total/NA Water OIA-1677
LCS 180-410229/23 Lab Control Sample Total/NA Water OIA-1677
680-219919-1 MS B300 Total/NA Water OIA-1677
680-219919-1 MSD B300 Total/NA Water OIA-1677
Eurofins Savannah
Page 12 of 23 8/29/2022

Lab Chronicle
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Client Sample ID: B300
Date Collected: 08/17/22 19:10
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-1
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 737344 08/24/22 18:21 AF EET SAV
Instrument ID: CICK
Analysis D7511-12 1 288713 08/23/22 07:58 CBM8 ELLE
Instrument ID: 19369
Analysis OIA-1677 1 410147 08/26/22 12:02 SNR EET PIT
Instrument ID: ALPKEM3
Analysis OIA-1677 1 410229 08/27/22 10:51 SNR EET PIT
Instrument ID: ALPKEM3
Client Sample ID: B301
Date Collected: 08/18/22 09:05
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-2
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 737344 08/24/22 18:34 AF EET SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 1 288713 08/23/22 08:05 CBM8 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 410147 08/26/22 12:07 SNR EET PIT
Instrument ID: ALPKEM3
Total/NA Analysis OIA-1677 1 410229 08/27/22 11:01 SNR EET PIT
Instrument ID: ALPKEM3
Client Sample ID: B302
Date Collected: 08/17/22 18:00
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-3
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 737344 08/24/22 18:46 AF EET SAV
Instrument ID: LICK
Total/NA Analysis D7511-12 1 288713 08/23/22 08:07 CBM8 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 410147 08/26/22 12:14 SNR EET PIT
Instrument ID: ALPKEM3
Total/NA Analysis OIA-1677 1 410229 08/27/22 10:55 SNR EET PIT
Instrument ID: ALPKEM3
Client Sample ID: B303
Date Collected: 08/17/22 16:35
Date Received: 08/19/22 09:30
Prep Type
Lab Sample ID: 680-219919-4
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 737344 08/24/22 18:59 AF EET SAV
Instrument ID: CICK
Eurofins Savannah
Page 13 of 23 8/29/2022

Lab Chronicle
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Client Sample ID: B303
Date Collected: 08/17/22 16:35
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-4
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis D7511-12 1 288713 08/23/22 08:09 CBM8 ELLE
Total/NA Analysis OIA-1677 1 410147 08/26/22 12:16 SNR EET PIT
Instrument ID: ALPKEM3
Total/NA
Analysis OIA-1677
Instrument ID: ALPKEM3
1
410229 08/27/22 10:57 SNR EET PIT
Client Sample ID: B304
Date Collected: 08/17/22 15:10
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-5
Matrix: Water
Prep Type
Batch Batch Dil Initial Final Batch Prepared
Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 737344 08/24/22 19:12 AF EET SAV
Instrument ID: LICK
Analysis D7511-12 1 288713 08/23/22 08:11 CBM8 ELLE
Instrument ID: 19369
Analysis OIA-1677
Instrument ID: ALPKEM3
Analysis OIA-1677
Instrument ID: ALPKEM3
1
1
410147 08/26/22 12:17 SNR EET PIT
410229 08/27/22 10:58 SNR EET PIT
Client Sample ID: B305
Date Collected: 08/17/22 13:20
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-6
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 737345 08/24/22 20:53 UI EET SAV
Instrument ID: CICK
Analysis D7511-12 1 288713 08/23/22 08:14 CBM8 ELLE
Instrument ID: 19369
Analysis OIA-1677 1 410147 08/26/22 12:19 SNR EET PIT
Instrument ID: ALPKEM3
Analysis OIA-1677 1 410229 08/27/22 11:00 SNR EET PIT
Instrument ID: ALPKEM3
Client Sample ID: MW 219
Date Collected: 08/18/22 12:05
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-7
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 737345 08/24/22 21:05 UI EET SAV
Instrument ID: LICK
Total/NA Analysis D7511-12 1 288713 08/23/22 08:16 CBM8 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 410147 08/26/22 12:20 SNR EET PIT
Instrument ID: ALPKEM3
Eurofins Savannah
Page 14 of 23 8/29/2022

Lab Chronicle
Client: Civil & Environmental Consultants Inc Job ID: 680-219919-1
Project/Site: Alcoa - Badin NC (GW)
Client Sample ID: MW 219
Date Collected: 08/18/22 12:05
Date Received: 08/19/22 09:30
Lab Sample ID: 680-219919-7
Matrix: Water
Prep Type
Batch Batch Dil Initial Final Batch Prepared
Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Analysis OIA-1677 1
Client Sample ID: MW218
Date Collected: 08/18/22 10:45
Date Received: 08/19/22 09:30
410229 08/27/22 11:10 SNR EET PIT
Lab Sample ID: 680-219919-8
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 737345 08/24/22 21:18 Ul EET SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 1 288713 08/23/22 08:18 CBM8 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 410147 08/26/22 12:22 SNR EET PIT
Instrument ID: ALPKEM3
Total/NA Analysis OIA-1677 1 410229 08/27/22 11:12 SNR EET PIT
Instrument ID: ALPKEM3
Laboratory References:
EET PIT = Eurofins Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
EET SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
ELLE = Eurofins Lancaster Laboratories Environment Testing, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
Eurofins Savannah
Page 15 of 23 8/29/2022

Eurofins Savannah
Chain of Custody Record
5102 LaRoche Avenue
COC No:
680-138151-50348 1
Page.
Page 1 of 1
Preservation Codes
A -HCL M - Hexane
8-NaOH N - None
C-Zn Acetate O-AaNa02
D - Nitric Acid P - Na204S
E - NaHSO4 O - Na2S20
F -MeOH R-Na2S3
G- Amchlor S-H2SO4
H - Ascorbic Acid T - TSP Dodecahydrate
l -Ice U -Acetone
J -Dl Water W-pH
-
K-EDTA -pH 4-5
L - EDA Y Trizma
Z other (specify)
Other-
S ecial Instructions/Note:
1
1(A fee may . e -ssessed if samples are retained longer than 1 month)
Client L Disposal By Lab Archive For Months
ns/QC Requirements,
'Method of Shipment '
k‘
U
Company --1
Company
ure(s) °C and Other Remarks.
2 r l �Z. O .� /� .
E
E
Carrier Tracking No(s).
State of Originfjc
Analysis Requested
sJau(e;uoo;o LegwWi nN I
`;
nsus com
apponld (WOW) - oeZ Wd9210 OOC
z
s
\
2.�
`�
!,�
�,,
Lab PM
Hoffman Sheila 8
E-Mail:
Sheila [e-mail]
(uol;oe(ul mold) eau'apluedo - said LL9I
\
a
Nwa
\
Sample Disposal
0 Retum To
Special Instructio'
(Empty Kit Relinquished by 'Date (Time.
a
o
Received by.
Cooler Temperat
(uosoa(u(mold) algellemy'aplue6o-LL9L'z.
\N
,\
>
ay
aplueAo lelol- Z L Ll9Lo
.,'.m;
a
NN,
N.
N.
•Compaq
L `(......
Company
t
a
N
E
U
Custody Seal No
'-
(op -o sa
j a(dwe5 Penllid Pleld
..
IPrasible Hazard Identification
Non -Hazard 0 Flammable Skin Irritant Poison B Unknown = Radiological
Deliverable Requested I, II, III, IV, Other (specify) 1
e)
Ili
s)
to'
s)
to'
Water
e)
Iii
e)TO
tri
Water L"
L
Due Date Requested.
TAT Requested (days)
Compliance Project 4 Yes <No
PO #:
Purchase Order Requested
Project #:
68025248
Matrix
(w.rwenr
sesald,
ow�,.won,
BT.Tissue, A.Air)
Preservation Code-
e)
Z.La
co
Ph—
V
a
IFii0
`J��
���
®3
a
la
!Company -
Civil & Environmental Consultants Inc
ram,
to H
,
�'
(YN
.. `sue`
.
--
\
-
'—
Sample Date
c
c
(Relinquished by
Address.
2704 Cherokee Farm Way Suite 101
.. C
State, Zip:
TN 37920
Phone:
Email
[e-mail]
Project Name:
Alcoa - Badin NC (GW)
Site:
Sample Identification
e
k . , , A .
7 . )
,
0,
V)V1‘
c Ak 0
--__
0- )
c'e%
\
v e )
CNr''
qT—
‘ „- - - c
--.1.-1.
_
0
'Client Information
Client Contact
Michael Worden
Custody Seals Intact:
A Yes A No
toW
O
b
O
Page 16 of 23
8/29/2022

Preservation Codes:
A-HCL M - Hexane
B - NaOH N - None
C - Zn Acetate O - AaNa02
D - Nitric Acid P - Na204S
E - NaHSO4
R - Na2S03
F - McOH - Na2s203
G- Amchlor S-H2SO4
H -Ascorbic Acid T - TSP Dodecahydrate
I -Ice U - Acetone
J - DI Water V-MCAA
K - EDTA W - pH 4-5
L-EDA Y - Trizma
Z - other (specify)
Other:
Special Instructions/Note:
subjectchangeTesting placesownership analytecomplianceupon t p shipment is forwarded under chain -of -custody If the laboratory
Note Since laboratoryaccreditations are to Eurofins Environment Southeast, LLC the of method, & accreditation u on out subcontract laboratone This sample
does not currently maintain accreditation in the State of Origin listed above for analysis/tests/matrix being analyzed, the samples must be shipped back to the Eurofins Environment Testing Southeast, LLC laboratory or other instructions will be provided Any changes to accreditation
status should be brought to Eurofins Environment Testing Southeast, LLC attention immediately If all requested accreditation are current to date return the signed Chain of Custody attesting to said complicahce to Eurofins Environment Testing Southeast, LLC
Sample Disposal (A fee may be assessed if samples are retained longer than 1 month)
I I Return To Client O Disposal By Lab 0 Archive For Months
Special Instructions/QC Requirements
Empty Klt Relinquished by' Date 'Time. / 'Method of Shipment:
E
0
U
E
0
U
Company
Cooler Temperature(s) °C and Other Remarks
r f
�y
E
C
m
3
E
E
@
8
E
w
m
0
Due Date Requested:
9/1/2022 Analysis Requested
sSaufe}uoa-{o a WfN leloi
c
_ ro
oo -,
ro
qs..
_ oo
w
a3
Received • 201-2,z
Received by v
Received by
LUI V1111J CIV01111Q11
5102LaRocheAvenue Chain of Custody Record
Savannah, GA 31404'''N �
Phone [phone] Fax: [phone]
Sampler Lab PM
Client Information (Sub Contract Lab) Hoffman, Sheila B
Client Contact: Phone E-Mail 6F
Shipping/Receiving Sheila Hoffman@et eurofinsus
(uoi;oaful moIj) aa)j'epIueA3 laa)j LL96
X
X
X
X
X
X
X
X
(uonoafulmold) °Kgepew'apluedp1119L
X
X
X
X
X
X
X
X
Company
Company I
Company
Custody Seal No 1
li l I
(aFla??'a7C) aS01Sbni!!l+a14T4�
Possible Hazard Identification
Unconfirmed
'Deliverable Requested I, II, III, IV, Other (specify) Primary Deliverable Rank 2
-(oN 46sa J doves pale)lld-plalf
. .
TAT Requested (days):
Project*
68025248
Matrix
(w=water,
S=solid,
0=wastetoil,
BT=Tissue, A=Air)
Preservation Code: 1
m
m
Water
Water
Water
Water
m
m
V
jQ�`
d
E
Date/Time `
E
ca ~ U
0
a)
0. a)
u) F
c
,— Yo
20)
W
c
Nip
2u,
W
c
N�
a3°
W
c
N�
a)�
W
c
NN
a)�
W
c
�p
a
W
c
N,
1 a5°
W
c
aa)a))
@
W
#
o
O
U
Sample Date
8/17/22
8/18/22
N
N
W
I,-
o
NN
I-
a
N
I,-
a
8/18/22
8/18/22
Relinquished by
Relinquished by
Relinquished by
Address
301 Alpha Drive, RIDC Park,
Er?
9
U E.
State Zip
PA, 15238
Phone
412-963-7058(Tel) 412-963-2468(Fax)
W
'Project Name
Alcoa - Badin NC (GW)
Sample Identification - Client ID (Lab ID)
B300 (680-219919-1)
F--
6301 (680-219919-2)
16302 (680-219919-3)
B303 (680-219919-4)
B304 (680-219919-5)
6305(680-219919-6)
MW 219 (680-219919-7)
1MW218 (680-219919-8)
Custody Seals Intact:
Yes 4 No
S
V
u
Page 17 of 23
8/29/2022

Eurofins Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Phone: [phone] Fax [phone]
Chain of Custody Record
II
II
111
eurofins
-nvlronment Testing
t>nerica
Client Information (Sub Contract Lab)
Sampler
Lab PM
Hoffman, Sheila B
Gamer Tracking Not')
COC No
680-705518 1
Client Contact
Shipping/Receiving
Phone:
E-Mail
Sheila Hoffman@et eurofinsus com
State o1 Origin
North Carolina
Page
Page 1 of 1
Company
Eurofins Lancaster Laboratories Environm
Accreditations Required (See note)
State - North Carolina (WW/SW)
Job a
680-219919-1
Address
2425 New Holland Pike
Due Date Requested:
9/1/2022
Analysis Requested
Preservation Codes:
A HCL kg -Hexane
N - None
e- 0- ASNaO2
zo Acetate
C - Zn Acetate P - Na204S
D Nitric Acid
E - NaH504 0 - Na2S03
R - Na2S203
F -MeOH S-H2SO4
H - Ascorbic Acid T - TSP Dodecahydrate
i - Ice U-Arrtone
J - DI Water V - MCAA
K -EDTA W-p114.5
Y - Trzme
L MA z - other (specify)
Other:
City
Lancaster
TAT Requested (days)'
'Field Filtered Sample (Yes or No)
Perform MSIMSD (Yes or No)
1
01511 12/ Total Cyanide
Total Number of containers
State. Zip:
PA, 17601
Phone
717-656-2300(Tel)
PO
Email
WO #
Project Name:
Alcoa - Badin NC (GW)
Protect a:
68025248
S.le
SSOW#
Sample Identification - Client ID (Lab ID)
Sample
Sample
Time
Sample
Type
(C=comp,
G=grab)
Matrix
(w...a..
s..om.
D....00.
oT.rn.......;,)
Special Instructions/Note:
I
XPreservation
Code
B300 (680-219919-1)
8/17/22
19 10
Eastern
Water
X
1
Price from Lancaster is 536 per sample
B301 (680-219919-2)
8/18/22
09 05
Eastern
Water
X
1
Price from Lancaster is 536 per sample
8302 (680-219919-3)
8/17/22
18.00
Eastern
Water
X
1
Price from Lancaster is 536 per sample
8303 (680-219919-4)
8/17/22
16 35
Eastern
Water
X
5 •
Pnce from Lancaster is 536 per sample
8304 (680-219919-5)
8/17/22
15 10
Eastern
Water
X
1
Price from Lancaster is 536 per sample
B305 (680-219919-6)
8/17/22
1320
Eastem
Water
X
Price from Lancaster is 536 per sample
MW 219 (680-219919-7)
8118/22
12.05
Eastem
Water
X
1
Pnce from Lancaster is 536 per sample
MW218 (680-219919-8)
8/18/22
10 45
Eastern
Water
X
Price from Lancaster is 536 per sample
Note: Since laboratory acereditations are subject to change. Eurofins Environment Testing Southeast. LLC places the ownership of method. analyze 6 accreditation compliance upon out subcontract aboratories. Tha sample shipment is forwarded under chain -of -custody. If the laboratory
does not currently maintain accreditation in the State of Ongm listed above for analysis/tests/matrix being analyzed, the samples must be shipped back to the Eurofins Environment Testing Southeast, LLC laboratory or other instructions will be provided. Any charges to accreditation
status should be brought to Eurofins Environment Testing Southeast. LLC attention immediately If all requested acuednabons are current to dale, retu n the signed Chain of Custody attesting to said complicance to Eurofins Environment Testing Southeast, LLC
Possible Hazard identification
Unconfirmed
Sample Disposal ( A fee may be assessed if samples are retained longer than 1 month)
CRetum To Client C, Disposal By Lab Archive For Months
Deliverable Requested I, II, 111, IV, Other (specify) Primary Deliverable Rank 2
Special Instructions/QC Requirements
Empty Kit Relinquished by Date
Time ,Method or Shipment
VV
Relinquished by
Date/Time (Company
Received by jOate/Time
—�
(Company
a
Relinquished by Date/Time n
Received by
I Date/Time
ir
l�
RehppWSlled be -Date/Thme.
Received
D ime: _ CI:—Coi]h
any
Custody Seals Intact
A Yes A No
Custody Seal No
Cooler Temperature(s) °C and Omer Remarks rj
oti
Page 18 of 23
Vet-- 06/OS'2021
8/29/2022

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-219919-1
Login Number: 219919
List Number: 1
Creator: Bissonnette, lan
Question
Answer Comment
List Source: Eurofins Savannah
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. N/A
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is N/A
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins Savannah
Page 19 of 23 8/29/2022

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-219919-1
Login Number: 219919
List Number: 2
Creator: Ballard, Megan
Question
List Source: Eurofins Lancaster Laboratories Environment Testing, LLC
List Creation: 08/20/22 10:03 AM
Answer Comment
The cooler's custody seal is intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable (</=6C, not frozen). True
Cooler Temperature is recorded. True
WV: Container Temperature is acceptable (</=6C, not frozen). N/A
WV: Container Temperature is recorded. N/A
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
There are no discrepancies between the containers received and the COC. True
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
There is sufficient vol. for all requested analyses. True
Is the Field Sampler's name present on COC? False
Sample custody seals are intact. N/A
VOA sample vials do not have headspace >6mm in diameter (none, if from
WV)?
N/A
Received project as a subcontract.
Eurofins Savannah
Page 20 of 23 8/29/2022

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-219919-1
Login Number: 219919
List Number: 3
Creator: Watson, Debbie
Question
Answer Comment
List Source: Eurofins Pittsburgh
List Creation: 08/20/22 12:34 PM
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? N/A
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. True
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins Savannah
Page 21 of 23 8/29/2022

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Project/Site: Alcoa - Badin NC (GW)
Laboratory: Eurofins Savannah
The accreditations/certifications listed below are applicable to this report.
Job ID: 680-219919-1
Authority
Program
Identification Number Expiration Date
North Carolina (WW/SW) State
269 12-31-22
Laboratory: Eurofins Lancaster Laboratories Environment Testing, LLC
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority
Program
Identification Number Expiration Date
A2LA
A2LA
Alaska
Alaska (UST)
Arizona
Arkansas DEQ
California
Colorado
Connecticut
DE Haz. Subst. Cleanup Act (HSCA)
Delaware (DW)
Florida
Georgia (DW)
Hawaii
Illinois
Iowa
Kansas
Kentucky (DW)
Kentucky (UST)
Kentucky (WW)
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Missouri
Montana (DW)
Montana (UST)
Nebraska
New Hampshire
New Jersey
New York
North Carolina (DW)
North Carolina (WW/SW)
North Dakota
Oklahoma
Oregon
PALA
Pennsylvania
Rhode Island
South Carolina
Tennessee
Texas
Dept. of Defense ELAP
ISO/IEC 17025
State
State
State
State
State
State
State
State
State
NELAP
State
State
NELAP
State
NELAP
State
State
State
NELAP
State
State
State
State
NELAP
State
State
State
State
NELAP
NELAP
NELAP
State
State
State
NELAP
NELAP
Canada
NELAP
State
State
State
NELAP
* Accreditation/Certification renewal pending - accreditation/certification considered valid.
0001.01 11-30-22
0001.01 11-30-22
PA00009 07-01-23
17-027 02-28-23
AZ0780 03-12-23
88-0660 08-10-22 *
2792 11-30-22
PA00009 06-30-23
PH-0746 06-30-23
019-006(PA cert) 01-31-23
N/A 01-31-23
E87997 06-30-23
C048 01-31-23
N/A 01-31-23
200027 01-31-23
361 03-02-22*
E-10151 10-31-22
KY90088 12-31-22
1.01 11-30-22
KY90088 01-01-23
02055 06-30-23
2019012 03-12-23
100 06-30-23
M-PA009 06-30-23
9930 01-31-23
042-999-487 12-31-22
450 01-31-25
0098 01-01-23
<cert No.> 02-01-23
NE-OS-32-17 01-31-23
2730 01-10-23
PA011 06-30-23
10670 04-01-23
42705 07-31-23
521 12-31-22
R-205 01-31-23
R-205 08-31-22
PA200001 09-11-22
1978 09-16-24
36-00037 01-31-23
LA000338 12-30-22
89002 01-31-23
02838 01-31-23
T104704194-21-40 08-31-22
Eurofins Savannah
Page 22 of 23 8/29/2022

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Project/Site: Alcoa - Badin NC (GW)
Laboratory: Eurofins Lancaster Laboratories Environment Testing, LLC (Continued)
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Job ID: 680-219919-1
Authority Program Identification Number Expiration Date
USDA US Federal Programs P330-19-00197 08-09-23
Vermont State VT - 36037 10-28-22
Virginia NELAP 460182 06-15-23
Washington State C457 04-11-23
West Virginia (DW) State 9906 C 12-31-22
West Virginia DEP State 055 10-31-22
Wyoming State BTMS-L 01-31-23
Wyoming (UST) A2LA 1.01 11-30-22
Laboratory: Eurofins Pittsburgh
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 434 12-31-22
Eurofins Savannah
Page 23 of 23 8/29/2022

Hydrogeological Conceptual Site Model Update — Badin Business Park
Attachment G 2019 to 2021 Fluoride and Cyanide Track Down
Analytical Results
EHS Support LLC

Draft — Hydrogeological Conceptual Site Model Update — Badin Business Park
680-196438-1; 2.050
EHS Support LLC

LINKS
Review your project
results through
�TotaAccesss
Visit us at:
www. eurofinsus.comfEnv
eurofins
ti
Environment Testing
America
ANALYTICAL REPORT
Eurofins TestAmerica, Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Tel: [phone]
Laboratory Job ID: 680-196438-1
For:
Civil & Environmental Consultants Inc
2704 Cherokee Farm Way
Suite 101
Knoxville, Tennessee 37920
Attn: Michael Worden
Authorized for release by:
3/26/2021 12:47:38 PM
Sheila Hoffman, Project Manager II
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for
accredited parameters, exceptions are noted in this report. This report may not be reproduced
except in full, and with written approval from the laboratory. For questions please contact the
Project Manager at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Method Summary
Client: Civil & Environmental Consultants Inc
Job ID: 680-196438-1
Method
Method Description
Protocol
Laboratory
300.0-1993 R2.1
200.7 Rev 4.4
1664B
2540 D-2011
4500 NH3 G-2011
D7511-12
OIA-1677
SM 5210B
1664E
200.7-1994 R4.4
4500 NH3 B-2011
Anions, Ion Chromatography
Metals (ICP)
HEM and SGT-HEM
Total Suspended Solids (Dried at 103-105°C)
Ammonia
Total Cyanide
Cyanide, Free (Flow Injection)
BOD, 5-Day
HEM and SGT-HEM (Aqueous)
Preparation, Total Metals
Ammonia, Distillation
MCAWW TAL SAV
40CFR136A TAL SAV
1664B TAL SAV
SM TAL SAV
SM TAL SAV
ASTM ELLE
01 CORP TAL PIT
SM TAL SAV
1664B TAL SAV
EPA TAL SAV
SM TAL SAV
Protocol References:
1664B = EPA-821-98-002
40CFR136A = "Methods for Organic Chemical Analysis of Municipal Industrial Wastewater", 40CFR, Part 136, Appendix A, October 26, 1984 and
subsequent revisions.
ASTM = ASTM International
EPA = US Environmental Protection Agency
MCAWW = "Methods For Chemical Analysis Of Water And Wastes", EPA-600/4-79-020, March 1983 And Subsequent Revisions.
01 CORP = 01 Corporation Instrument Manual.
SM = "Standard Methods For The Examination Of Water And Wastewater"
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Env, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
TAL SAV = Eurofins TestAmerica, Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins TestAmerica, Savannah
Page 2 of 23 3/26/2021

Sample Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-1
Lab Sample ID Client Sample ID
Matrix
Collected Received Asset ID
680-196438-1 0ut005-13-2-050 Water 03/17/21 11:30 03/18/21 15:31
Eurofins TestAmerica, Savannah
Page 3 of 23 3/26/2021

Definitions/Glossary
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-1
Qualifiers
Metals
Qualifier
Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
General Chemistry
Qualifier Qualifier Description
LCS and/or LCSD is outside acceptance limits, low biased.
*1 LCS/LCSD RPD exceeds control limits.
F1 MS and/or MSD recovery exceeds control limits.
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins TestAmerica, Savannah
Page 4 of 23 3/26/2021

Case Narrative
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-1
Job ID: 680-196438-1
Laboratory: Eurofins TestAmerica, Savannah
Narrative
CASE NARRATIVE
Client: Civil & Environmental Consultants Inc
Project: Alcoa - Groundwater & Waste Characteriza
Report Number: 680-196438-1
With the exceptions noted as flags or footnotes, standard analytical protocols were followed in the analysis of the samples and no
problems were encountered or anomalies observed. In addition all laboratory quality control samples were within established control
limits, with any exceptions noted below. Each sample was analyzed to achieve the lowest possible reporting limit within the constraints of
the method. In the event of interference or analytes present at high concentrations, samples may be diluted. For diluted samples, the
reporting limits are adjusted relative to the dilution required.
RECEIPT
The samples were received on 03/18/2021; the samples arrived in good condition, properly preserved and on ice. The temperature of the
coolers at receipt was 1.1 C.
METALS (ICP)
Sample Out005-13-2-050 (680-196438-1) was analyzed for Metals (ICP) in accordance with EPA Method 200.7. The samples were
prepared on 03/19/2021 and analyzed on 03/23/2021.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
HEM AND SGT-HEM
Sample Out005-13-2-050 (680-196438-1) was analyzed for HEM and SGT-HEM in accordance with EPA Method 1664B. The samples
were prepared and analyzed on 03/24/2021.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
FREE CYANIDE
Sample Out005-13-2-050 (680-196438-1) was analyzed for free cyanide in accordance with 1677. The samples were analyzed on
03/24/2021.
Cyanide, Free failed the recovery criteria low for the MS of sample Out005-13-2-050MS (680-196438-1) in batch 180-350778. Cyanide,
Free failed the recovery criteria low for the MSD of sample Out005-13-2-050MSD (680-196438-1) in batch 180-350778. Sample matrix
interference and/or non -homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within
acceptance limits.
Refer to the QC report for details.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
TOTAL SUSPENDED SOLIDS
Sample Out005-13-2-050 (680-196438-1) was analyzed for total suspended solids in accordance with SM 2540D. The samples were
analyzed on 03/22/2021.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
ANIONS BY ION CHROMATOGRAPHY (28 DAY)
Sample Out005-13-2-050 (680-196438-1) was analyzed for Anions by Ion Chromatography (28 Day) in accordance with EPA Method 300.0.
The samples were analyzed on 03/22/2021.
Eurofins TestAmerica, Savannah
Page 5 of 23 3/26/2021

Case Narrative
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-1
Job ID: 680-196438-1 (Continued)
Laboratory: Eurofins TestAmerica, Savannah (Continued)
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
BIOCHEMICAL OXYGEN DEMAND
Sample Out005-13-2-050 (680-196438-1) was analyzed for Biochemical Oxygen Demand in accordance with SM 5210B. The samples
were analyzed on 03/18/2021.
Biochemical Oxygen Demand failed the recovery criteria low for LCSD 680-660304/3. Biochemical Oxygen Demand exceeded the RPD
limit. The method holding time had expired, therefore the analysis was not repeated. The data was qualified and reported.
Refer to the QC report for details.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
CYANIDE
Sample Out005-13-2-050 (680-196438-1) was analyzed for cyanide in accordance with D7511-12. The samples were analyzed on
03/23/2021.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
AMMONIA
Sample Out005-13-2-050 (680-196438-1) was analyzed for ammonia in accordance with SM 4500 NH3 G. The samples were prepared
and analyzed on 03/19/2021.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Eurofins TestAmerica, Savannah
Page 6 of 23 3/26/2021

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-1
Client Sample ID: Out005-13-2-050
Date Collected: 03/17/21 11:30
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-1
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 37 1.0 0.40 mg/L 03/22/21 19:56 1
Fluoride 2.1 0.10 0.040 mg/L 03/22/21 19:56 1
Chloride 3.3 0.50 0.20 mg/L 03/22/21 19:56 1
Bromide <0.20 0.50 0.20 mg/L 03/22/21 19:56 1
Method: 200.7 Rev 4.4 - Metals (ICP)
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Aluminum 35 J 200 24 ug/L 03/19/21 14:01 03/23/21 16:20 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
HEM (Oil & Grease) 1.4 J 5.1 1.4 mg/L 03/24/21 08:04 03/24/21 10:17 1
Ammonia <0.10 0.25 0.10 mg/L 03/19/21 10:00 03/19/21 11:00 1
Cyanide, Total 0.028 0.0060 0.0020 mg/L 03/23/21 17:27 1
Cyanide, Free <0.00079 F1 0.0020 0.00079 mg/L 03/24/21 21:27 1
Analyte Result Qualifier RL RL Unit D Prepared Analyzed Dil Fac
Total Suspended Solids <2.5 2.5 2.5 mg/L 03/22/21 10:36 1
Biochemical Oxygen Demand <2.0 *-*1 2.0 2.0 mg/L 03/18/21 19:44 1
Eurofins TestAmerica, Savannah
Page 7 of 23 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-1
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Lab Sample ID: MB 680-660756/33
Matrix: Water
Analysis Batch: 660756
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate <0.40 1.0 0.40 mg/L 03/22/21 19:18 1
Fluoride <0.040 0.10 0.040 mg/L 03/22/21 19:18 1
Chloride <0.20 0.50 0.20 mg/L 03/22/21 19:18 1
Bromide <0.20 0.50 0.20 mg/L 03/22/21 19:18 1
Lab Sample ID: LCS 680-660756/34
Matrix: Water
Analysis Batch: 660756
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Sulfate 10.0 9.75 mg/L 98 90 - 110
Fluoride 2.00 2.04 mg/L 102 90 - 110
Chloride 10.0 10.0 mg/L 100 90 - 110
Bromide 10.0 9.89 mg/L 99 90. 110
Lab Sample ID: LCSD 680-660756/35
Matrix: Water
Analysis Batch: 660756
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 10.0 9.75 mg/L 98 90 _ 110 0 15
Fluoride 2.00 2.05 mg/L 102 90 _ 110 0 15
Chloride 10.0 10.0 mg/L 100 90 _ 110 0 15
Bromide 10.0 9.87 mg/L 99 90 _ 110 0 15
Lab Sample ID: 680-196438-1 MS
Matrix: Water
Analysis Batch: 660756
Analyte
Client Sample ID: Out005-13-2-050
Prep Type: Total/NA
Sample Sample Spike MS MS %Rec.
Result Qualifier Added Result Qualifier Unit D %Rec Limits
Sulfate 37 10.0 46.6 mg/L 99 80 _ 120
Fluoride 2.1 2.00 4.14 mg/L 101 80 _ 120
Chloride 3.3 10.0 13.6 mg/L 103 80 _ 120
Bromide <0.20 10.0 10.1 mg/L 101 80 - 120
Lab Sample ID: 680-196438-1 MSD
Matrix: Water
Analysis Batch: 660756
Client Sample ID: out005-13-2-050
Prep Type: Total/NA
Sample Sample Spike MSD MSD %Rec. RPD
Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 37 10.0 46.4 mg/L 97 80 - 120 0 15
Fluoride 2.1 2.00 4.10 mg/L 99 80. 120 1 15
Chloride 3.3 10.0 13.3 mg/L 100 80. 120 2 15
Bromide <0.20 10.0 9.81 mg/L 98 80 _ 120 2 15
Eurofins TestAmerica, Savannah
Page 8 of 23 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-1
Method: 200.7 Rev 4.4 - Metals (ICP)
pLab Sample ID: MB 680-660466/1-A
Matrix: Water
Analysis Batch: 661019
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
Prep Batch: 660466
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Aluminum <24 200 24 ug/L 03/19/21 14:01 03/23/21 15:39 1
pLab Sample ID: LCS 680-660466/2-A
Matrix: Water
Analysis Batch: 661019
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA a
Prep Batch: 660466
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Aluminum
5000 4730 ug/L 95 85.115
Method: 1664B - HEM and SGT-HEM
rLab Sample ID: MB 680-661023/1-A
Matrix: Water
Analysis Batch: 661083
LAnalyte
Client Sample ID: Method Blank
Prep Type: Total/NA
Prep Batch: 661023
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
HEM (Oil & Grease) <1.4
Lab Sample ID: LCS 680-661023/2-A
Matrix: Water
Analysis Batch: 661083
Analyte
5.0 1.4 mg/L
03/24/21 08:04 03/24/21 10:17 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Prep Batch: 661023
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
HEM (Oil & Grease)
[Lab Sample ID: LCSD 680-661023/3-A
Matrix: Water
Analysis Batch: 661083
Analyte
40.0 35.40 mg/L 88 78. 114
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Prep Batch: 661023
Spike LCSD LCSD %Rec. RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
HEM (Oil & Grease)
40.0 36.00 mg/L 90 78 - 114 2 18
Method: 2540 D-2011 - Total Suspended Solids (Dried at 103-105°C)
Lab Sample ID: MB 680-660730/1
Matrix: Water
Analysis Batch: 660730
Analyte
MB MB
Result Qualifier
RL
Client Sample ID: Method Blank
Prep Type: Total/NA
RL Unit D Prepared Analyzed Dil Fac
Total Suspended Solids <2.5 2.5 2.5 mg/L 03/22/21 10:36 1
Lab Sample ID: LCS 680-660730/2
Matrix: Water
Analysis Batch: 660730
Analyte
Total Suspended Solids
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
951 840 mg/L 88 80 -120
Eurofins TestAmerica, Savannah
Page 9 of 23 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-1
Method: 2540 D-2011 - Total Suspended Solids (Dried at 103-105°C) (Continued)
pLab Sample ID: LCSD 680-660730/3
Matrix: Water
Analysis Batch: 660730
Analyte
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
Total Suspended Solids 951 886 mg/L 93 80 - 120 5 25
Method: 4500 NH3 G-2011 - Ammonia
Lab Sample ID: MB 680-660390/1-A
Matrix: Water
Analysis Batch: 660415
Analyte
MB MB
Client Sample ID: Method Blank a
Prep Type: Total/NA
Prep Batch: 660390
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Ammonia <0.10 0.25 0.10 mg/L 03/19/21 10:00 03/19/21 10:55 1
rLab Sample ID: LCS 680-660390/3-A Client Sample ID: Lab Control Sample
Matrix: Water Prep Type: Total/NA
Analysis Batch: 660415 Prep Batch: 660390
Spike LCS LCS %Rec.
Analyte Added Result Qualifier Unit D %Rec Limits
Ammonia 1.00 0.924 mg/L 92 90 _ 110
Method: D7511-12 - Total Cyanide
Lab Sample ID: MB 410-107202/17
Matrix: Water
Analysis Batch: 107202
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020 0.0060 0.0020 mg/L 03/23/21 16:07 1
[—Lab Sample ID: MB 410-107202/47
Matrix: Water
Analysis Batch: 107202
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020 0.0060 0.0020 mg/L 03/23/21 17:07 1
Lab Sample ID: LCS 410-107202/16
Matrix: Water
Analysis Batch: 107202
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Total
Lab Sample ID: LCS 410-107202/46
Matrix: Water
Analysis Batch: 107202
Analyte
Cyanide, Total
0.0400 0.0381 mg/L 95 84. 116
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
0.0300 0.0307 mg/L 102 84 -116
Eurofins TestAmerica, Savannah
Page 10 of 23 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-1
Method: OIA-1677 - Cyanide, Free (Flow Injection)
Lab Sample ID: MB 180-350778/21
Matrix: Water
Analysis Batch: 350778
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079
Lab Sample ID: LCS 180-350778/20
Matrix: Water
Analysis Batch: 350778
Analyte
0.0020 0.00079 mg/L
03/24/21 21:26 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA El
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Free
Lab Sample ID: 680-196438-1 MS
Matrix: Water
Analysis Batch: 350778
Analyte
0.0500 0.0528 mg/L 106 82 _ 132
Client Sample ID: Out005-13-2-050
Prep Type: Total/NA
Sample Sample Spike MS MS %Rec.
Result Qualifier Added Result Qualifier Unit D %Rec Limits
Cyanide, Free <0.00079 F1 0.0500 0.00419 F1 mg/L 8 82 - 130
Lab Sample ID: 680-196438-1 MSD
Matrix: Water
Analysis Batch: 350778
Analyte
Client Sample ID: Out005-13-2-050
Prep Type: Total/NA
Sample Sample Spike MSD MSD %Rec. RPD
Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit
Cyanide, Free <0.00079 F1 0.0500 0.00433 F1 mg/L 9 82 - 130 3 11
Method: SM 5210B - BOD, 5-Day
Lab Sample ID: USB 680-660304/1
Matrix: Water
Analysis Batch: 660304
Analyte
USB USB
Result Qualifier
RL
Client Sample ID: Method Blank
Prep Type: Total/NA
RL Unit D Prepared Analyzed Dil Fac
Biochemical Oxygen Demand <2.0
Lab Sample ID: LCS 680-660304/2
Matrix: Water
Analysis Batch: 660304
Analyte
2.0 2.0 mg/L
03/18/21 19:10 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Biochemical Oxygen Demand
Lab Sample ID: LCSD 680-660304/3
Matrix: Water
Analysis Batch: 660304
Analyte
198 185 mg/L 93 85 - 115
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
Biochemical Oxygen Demand 198 131 *- *1 mg/L 66 85. 115 34 30
Eurofins TestAmerica, Savannah
Page 11 of 23 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-1
Method: SM 5210B - BOD, 5-Day (Continued)
rLab Sample ID: 680-196438-1 DU
Matrix: Water
Analysis Batch: 660304
LAnalyte
Client Sample ID: Out005-13-2-050
Prep Type: Total/NA
Sample Sample DU DU RPD
Result Qualifier Result Qualifier Unit D RPD Limit
Biochemical Oxygen Demand <2.0 *- *1
<2.0 *- *1 mg/L NC 30
Eurofins TestAmerica, Savannah
Page 12 of 23 3/26/2021

Client: Civil & Environmental Consultants Inc
QC Association Summary
Job ID: 680-196438-1
HPLC/IC
Analysis Batch: 660756
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-196438-1
MB 680-660756/33
LCS 680-660756/34
LCSD 680-660756/35
680-196438-1 MS
680-196438-1 MSD
Out005-13-2-050
Method Blank
Lab Control Sample
Lab Control Sample Dup
Out005-13-2-050
Out005-13-2-050
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Water
Water
Water
Water
Water
Water
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
Metals
Prep Batch: 660466
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-196438-1
MB 680-660466/1-A
LCS 680-660466/2-A
Analysis Batch: 661019
Lab Sample ID
Out005-13-2-050
Method Blank
Lab Control Sample
Client Sample ID
Total/NA
Total/NA
Total/NA
Prep Type
Water
Water
Water
Matrix
200.7-1994 R4.4
200.7-1994 R4.4
200.7-1994 R4.4
Method
Prep Batch
680-196438-1
MB 680-660466/1-A
LCS 680-660466/2-A
Out005-13-2-050
Method Blank
Lab Control Sample
Total/NA
Total/NA
Total/NA
Water
Water
Water
200.7 Rev 4.4
200.7 Rev 4.4
200.7 Rev 4.4
660466
660466
660466
General Chemistry
Analysis Batch: 107202
Lab Sample ID
Client Sample ID
Prep Type Matrix
Method
Prep Batch
680-196438-1
MB 410-107202/17
MB 410-107202/47
LCS 410-107202/16
LCS 410-107202/46
Analysis Batch: 350778
Lab Sample ID
Out005-13-2-050
Method Blank
Method Blank
Lab Control Sample
Lab Control Sample
Client Sample ID
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Prep Type Matrix
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
Method
Prep Batch
680-196438-1
MB 180-350778/21
LCS 180-350778/20
680-196438-1 MS
680-196438-1 MSD
Analysis Batch: 660304
Lab Sample ID
Out005-13-2-050
Method Blank
Lab Control Sample
Out005-13-2-050
Out005-13-2-050
Client Sample ID
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Prep Type Matrix
OIA-1677
OIA-1677
OIA-1677
OIA-1677
OIA-1677
Method
Prep Batch
680-196438-1
USB 680-660304/1
LCS 680-660304/2
LCSD 680-660304/3
680-196438-1 DU
Prep Batch: 660390
Lab Sample ID
Out005-13-2-050
Method Blank
Lab Control Sample
Lab Control Sample Dup
Out005-13-2-050
Client Sample ID
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Prep Type Matrix
SM 5210B
SM 5210B
SM 5210B
SM 5210B
SM 5210B
Method
Prep Batch
680-196438-1
MB 680-660390/1-A
Out005-13-2-050
Method Blank
Total/NA Water
Total/NA Water
4500 NH3
B-2011
4500 NH3
B-2011
Eurofins TestAmerica, Savannah
Page 13 of 23 3/26/2021

Client: Civil & Environmental Consultants Inc
QC Association Summary
Job ID: 680-196438-1
General Chemistry (Continued)
Prep Batch: 660390 (Continued)
Lab Sample ID Client Sample ID
Prep Type
Matrix
Method
Prep Batch
LCS 680-660390/3-A Lab Control Sample
Analysis Batch: 660415
Lab Sample ID Client Sample ID
Total/NA
Prep Type
Water
Matrix
4500 NH3
B-2011
Method
Prep Batch
680-196438-1 0ut005-13-2-050
MB 680-660390/1-A
LCS 680-660390/3-A
Analysis Batch: 660730
Lab Sample ID
Method Blank
Lab Control Sample
Client Sample ID
Total/NA
Total/NA
Total/NA
Prep Type
Water
Water
Water
Matrix
4500 NH3
G-2011
4500 NH3
G-2011
4500 NH3
G-2011
Method
660390
660390
660390
Prep Batch
680-196438-1
MB 680-660730/1
LCS 680-660730/2
LCSD 680-660730/3
Prep Batch: 661023
Lab Sample ID
Out005-13-2-050
Method Blank
Lab Control Sample
Lab Control Sample Dup
Client Sample ID
Total/NA
Total/NA
Total/NA
Total/NA
Prep Type
Water
Water
Water
Water
Matrix
2540 D-2011
2540 D-2011
2540 D-2011
2540 D-2011
Method
Prep Batch
680-196438-1
MB 680-661023/1-A
LCS 680-661023/2-A
LCSD 680-661023/3-A
Analysis Batch: 661083
Lab Sample ID
Out005-13-2-050
Method Blank
Lab Control Sample
Lab Control Sample Dup
Client Sample ID
Total/NA
Total/NA
Total/NA
Total/NA
Prep Type
Water
Water
Water
Water
Matrix
1664B
1664B
1664B
1664B
Method
Prep Batch
680-196438-1
MB 680-661023/1-A
LCS 680-661023/2-A
LCSD 680-661023/3-A
Out005-13-2-050
Method Blank
Lab Control Sample
Lab Control Sample Dup
Total/NA
Total/NA
Total/NA
Total/NA
Water
Water
Water
Water
1664B
1664B
1664B
1664B
661023
661023
661023
661023
Eurofins TestAmerica, Savannah
Page 14 of 23 3/26/2021

Lab Chronicle
Client Sample ID: Out005-13-2-050
Date Collected: 03/17/21 11:30
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-1
Matrix: Water
Prep Type
Batch Batch Dil Initial Final Batch Prepared
Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660756 03/22/21 19:56 UI TAL SAV
Instrument ID: CICK
Total/NA Prep 200.7-1994 R4.4 50 mL 50 mL 660466 03/19/21 14:01 BCB TAL SAV
Total/NA Analysis 200.7 Rev 4.4 1 661019 03/23/21 16:20 BCB TAL SAV
Instrument ID: ICPE
Total/NA Prep 1664B 493 mL 500 mL 661023 03/24/21 08:04 JAS TAL SAV
Total/NA Analysis 1664B 1 661083 03/24/21 10:17 JAS TAL SAV
Instrument ID: NoEquip
Total/NA Analysis 2540 D-2011 1 1000 mL 1000 mL 660730 03/22/21 10:36 MS TAL SAV
Instrument ID: NOEQUIP
Total/NA Prep 4500 NH3 B-2011 6 mL 6 mL 660390 03/19/21 10:00 DR TAL SAV
Total/NA Analysis 4500 NH3 G-2011 1 2 mL 2 mL 660415 03/19/21 11:00 DR TAL SAV
Instrument ID: KONELAB1
Total/NA Analysis D7511-12 1 107202 03/23/21 17:27 UJE2 ELLE
Instrument ID: 19369
Total/NA
Total/NA
Analysis OIA-1677 1 350778 03/24/21 21:27 GRB TAL PIT
Instrument ID: ALPKEM3
Analysis SM 5210B 1 300 mL 300 mL 660304 03/18/21 19:44 CMR TAL SAV
Instrument ID: BODAssay+
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Env, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
TAL SAV = Eurofins TestAmerica, Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins TestAmerica, Savannah
Page 15 of 23 3/26/2021

0)
N
Chain of Custody Record
0
1)
Csi
5102 LaRoche Avenue
cp
(0
o N
O co
U
Page
Page 1 ofa
o
Preservation Codes:
A - HCL M - Hexane
B -NaOH N - None
C - Zn Acetate 0 - AsNa02
D - Nitnc Aod P - Na2O4S
E - NaHSO4 0 - Na2S03
F - Me0H R - Na2S2O3
G - Amchlor S - H2SO4
H - Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J - DI Water V - MCAA
K - EDTA W • pH 4-5
L - EDA Z - other (specify)
Other:
i.6
z
c
o
«�
R111111111111
,,,E),11
\
i
Sample Disposal (A fee may be assessed if samples are retained longer than 1 month)
Return To Client Disposal By Lab Archive For Months
Special Instructions/CC Requirements
'Empty Kit Relinquished by. IDate lime 'Method of Shipment
a
U_
SP
A
4
0
a
0
Coder Temperatures) °C and Other Remarks 1 '� ' f •�
Apo
sn3
ao
wey3
8EV961-089
' T ^
r
%
1
—(0
to
, '
c
0
Lamer Tracking Nolsl
a
2
Analysis Requested
tioulRuoa ►o ...gwnN IRol
CoVi• S7221 y0LhL%d0109 d12i,
jl
&QIQ/
14d1-)ohob
Received y 13) rt
hFOb
>C
k2n L 1ia)
kX
x
X
X
7L,7*-
Lab PM
Hoffman, Sheila B
E-Mail
Sheila Hoffman@Eurofinset com
ITT 1:'?''° '' r'O-1-3.--6 I i 5 L 0
?(
x)(
)l-.
X..
`.
X
ssi - ao99z
z
9.009-9OLz9
z
-.)1
,0
9 110. arm
u,X.�
WnuIWnlV - VM0 L'OOZ
t]
X
quoWWV-0-CHNO099WS
h
' 7
.., . ... , . _..r
HpdR'9f�A)
o
U
Company
0
U
Custody Seals Intact 'Custody Seal No
n Yes A No
O a: aldwsg
(ON .1046
MINN PIMA
Possible Hazard Identification `
I Non -Hazard I 1 Flammable Skin Irritant I Poison B I Unknown Radiological
Deliverable Requested' I, II, III, IV, Other (specify)
a
Due Date Requested:
TAT Requested (days):
[Compliance Project: T Yes t No
PO — I
Purchase Order Requested
Project
#
68025248
Matrixte (w-war.
s•.oia.
o•wa.riou
Y.
eT•T•ue, A•AH)
i,
Water
i/ /
Sampler Ali .
O
0
�
a
O
ACO
a
a a o A
E a3
h~��
Q
1
o
CAS
0
0
a
Company
Civil & Environmental Consultants Inc
1d
E
�
—
CC]C'b�
���
O
)
p
3
Wrs&I—
E
y
'
_
i
i
C2
C�
Ct�
_
,
C�
i`�
1
Ch
A
t'�
c�'
S
Client Information•
Client Contact
Matt Ginther
Address
3701 Arco Corporate Drive Suite 400
City
Charlotte
Stale. Zip
NC, 28273
a
Email
[e-mail]
Protect Name
boo-a(g.00l3
n�
Sample Identification
Out005-13-2.050
v
§\1-.'
9
LI,1i
4
i
�U.
cia
�.�
a
�
CI
Q
i
co2
t
t'\
�)
Relinquished by / { /, -
r.
r -
s
Page 16 of 23
3/26/2021

Charlotte 229
Chain of Custody Record
COC No
680-123943-46437.1
Page
Page of 2
Da
Preservation Codes:
A - I-ICL M Hexane
B -NaOH N - None
C Zn Acetate 0 - AsNa02
D - Ndnc Acid P - Na204S
E - NaHSO4 Q - Na2S03
F - Me0H R - Na2S203
G • Amchlor S • H2SO4
H • Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J DI Water V - MCAA
K -EDTA W-pH4-5
L - EDA Z - otter (specify)
Other
�
zs
VfU'
u)
I
Sample Disposal (A fee may b9 assessed if samples are retained longer than 1 month)
Return To Client Disposal By Lab Archive For Months
Special Instructions/QC Requirements
..r
I
TICompany
Custody Seals Intact 'Custody Seal No Cooer Temperatures) `C and Other Remarks \ `�
AYes ANo 11 li
r
Career Tracking No(s)
State of Ongin
Analysis Requested
sJeulquoo jo JiQwnN IRol
;
yII1
l
I
—
III
(nlikv)Nv viv l;"^t/ 4L9 l 4Y-1-0
'Empty Kit Relinquished by (Date ITlme (Method of
$
•,
'' `
ill
Company ./`_„T
L f
111115
k) %-,w- u c)z. c
>,
III
4(r4 LA Q•QQc
k
AI
—
Lab PM
(Hoffman, Sheila B
CB
w
? L
w �
Auuawual-.«oo
z
ue-as
m
oPW�06
opi
m
U
aen-dr3T-vON
z
111111111111
(ON JO $.A) OSW/SW 1d
c
E_
(ON JO SOA) sldweS P.'.w PIMA
Preservation Code:
Possible Hazard Identification
Non -Hazard I I Flammable Skin lrrrtant 1 Poison 8 U Unknown I I Radiological
Deliverable Requested I, II, III. IV, Other (specify)
Due Date Requested:
TAT Requested (days):
(Compliance Project: ' Yes A No
PO#
Purchase Order Requested
Project #
68025248
Matrix
(W-water,
s•.aa.
o•wswra.
BT•T Sue. MAtr)
_
da
60
QI
a n c �
rn~UC7
Company
Civil & Environmental Consultants Inc
to H`
'
`
•
+EIRE
Sample Date
r
III
Address
2704 Cherokee Farm Way Suite 101
City
Knoxville
State. Zip.
TN, 37920
s
( Email
[e-mail]
Project Name
300-226.0013
��
d
d
cn
Sample Identification
;
O
mo
.
it
•
(
•o
1
lbab0°
Ct
1�
1
ow
.
1
cp
1
c)
ik
I
Z
°NI
Client Information
Client Contact
Michael Worden
-1
.'
•
71
Y
=
Page 17 of 23
3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-1
Login Number: 196438
List Number: 1
Creator: Daughtry, Beth A
Question
List Source: Eurofins TestAmerica, Savannah
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. True
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins TestAmerica, Savannah
Page 18 of 23 3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-1
Login Number: 196438
List Number: 2
Creator: Phillips, Ann -Marie E
Question
List Source: Eurofins Lancaster Laboratories Env
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal is intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable (</=6C, not frozen). True
Cooler Temperature is recorded. True
WV: Container Temperature is acceptable (</=6C, not frozen). N/A
WV: Container Temperature is recorded. N/A
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
There is sufficient vol. for all requested analyses. True
Multiphasic samples are not present. True
Samples do not require splitting or compositing. N/A
Is the Field Sampler's name present on COC? True
Sample Preservation Verified. N/A
Residual Chlorine Checked. N/A
Sample custody seals are intact. N/A
Eurofins TestAmerica, Savannah
Page 19 of 23 3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-1
Login Number: 196438
List Number: 4
Creator: Miller, Wesley R
Question
List Source: Eurofins Lancaster Laboratories Env
List Creation: 03/20/21 03:04 PM
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal is intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable (</=6C, not frozen). True
Cooler Temperature is recorded. True
WV: Container Temperature is acceptable (</=6C, not frozen). N/A
WV: Container Temperature is recorded. N/A
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
There is sufficient vol. for all requested analyses. True
Multiphasic samples are not present. True
Samples do not require splitting or compositing. N/A
Is the Field Sampler's name present on COC? False
Sample Preservation Verified. N/A
Residual Chlorine Checked. N/A
Sample custody seals are intact. N/A
Received project as a subcontract.
Eurofins TestAmerica, Savannah
Page 20 of 23 3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-1
Login Number: 196438
List Number: 3
Creator: Kovitch, Christina M
Question
List Source: Eurofins TestAmerica, Pittsburgh
List Creation: 03/18/21 07:31 PM
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. True
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins TestAmerica, Savannah
Page 21 of 23 3/26/2021

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Job ID: 680-196438-1
Laboratory: Eurofins TestAmerica, Savannah
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 269 12-31-21
Laboratory: Eurofins Lancaster Laboratories Env, LLC
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority Program Identification Number Expiration Date
A2LA Dept. of Defense ELAP 1.01 11-30-22
Alaska State PA00009 06-30-21
Alaska (UST) State 17-027 01-31-21 *
Arizona State AZ0780 03-12-22
Arkansas DEQ State 19-053-0 08-09-21
California State 2792 01-31-22
Colorado State PA00009 06-30-21
Connecticut State PH-0746 06-30-21
DE Haz. Subst. Cleanup Act (HSCA) State 019-006 (PA cert) 01-31-22
Delaware (DW) State N/A 02-01-22
Florida NELAP E87997 07-01-21
Hawaii State N/A 01-31-22
Illinois NELAP 004559 01-31-22
Iowa State 361 03-02-22
Kansas NELAP E-10151 10-31-21
Kentucky (DW) State KY90088 01-01-22
Kentucky (UST) State 1.01 11-30-22
Kentucky (WW) State KY90088 12-31-21
Louisiana NELAP 02055 06-30-21
Maine State 2019012 03-12-22
Maryland State 100 06-30-21
Massachusetts State M-PA009 06-30-21
Michigan State 9930 01-31-22
Minnesota NELAP 042-999-487 12-31-21
Missouri State 450 01-31-22
Montana (DW) State 0098 01-01-22
Montana (UST) State 0098 01-01-22
Nebraska State NE-OS-32-17 01-31-20 *
Nevada State PA000092019-3 07-31-21
New Hampshire NELAP 273019 01-10-22
New Jersey NELAP PA011 06-30-21
New York NELAP 10670 04-01-21
North Carolina (DW) State 42705 07-31-21
North Carolina (WW/SW) State 521 12-31-21
North Dakota State R-205 01-31-22
Oklahoma NELAP R-205 08-31-21
Oregon NELAP PA200001-018 09-12-21
PALA Canada 1978 05-08-21
Pennsylvania NELAP 36-00037 01-31-22
Rhode Island State LA000338 01-31-22
South Carolina State 89002002 01-31-22
Tennessee State 02838 01-31-22
Texas NELAP T104704194-20-38 08-31-21
Utah NELAP PA000092019-16 03-01-22
Vermont State VT - 36037 10-29-21
* Accreditation/Certification renewal pending - accreditation/certification considered valid.
Eurofins TestAmerica, Savannah
Page 22 of 23 3/26/2021

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Job ID: 680-196438-1
Laboratory: Eurofins Lancaster Laboratories Env, LLC (Continued)
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority Program Identification Number Expiration Date
Virginia NELAP 10561 06-14-21
Washington State C457 04-11-21
West Virginia (DW) State 9906 C 12-31-21
West Virginia DEP State 055 06-30-21
Wyoming State 8TMS-L 01-31-22
Wyoming (UST) A2LA 1.01 11-30-22
Laboratory: Eurofins TestAmerica, Pittsburgh
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 434 12-31-21
Eurofins TestAmerica, Savannah
Page 23 of 23 3/26/2021

Draft — Hydrogeological Conceptual Site Model Update — Badin Business Park
680-196438-2; Monitoring Wells
EHS Support LLC

LINKS
Review your project
results through
�TotaAccesss
Visit us at:
www. eurofinsus.comfEnv
eurofins
ti
Environment Testing
America
ANALYTICAL REPORT
Eurofins TestAmerica, Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Tel: [phone]
Laboratory Job ID: 680-196438-2
For:
Civil & Environmental Consultants Inc
2704 Cherokee Farm Way
Suite 101
Knoxville, Tennessee 37920
Attn: Michael Worden
Authorized for release by:
3/26/2021 1:17:58 PM
Sheila Hoffman, Project Manager II
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for
accredited parameters, exceptions are noted in this report. This report may not be reproduced
except in full, and with written approval from the laboratory. For questions please contact the
Project Manager at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Method Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Method Method Description Protocol Laboratory
300.0-1993 R2.1 Anions, Ion Chromatography MCAWW TAL SAV
D7511-12 Total Cyanide ASTM ELLE
OIA-1677 Cyanide, Free (Flow Injection) 01 CORP TAL PIT
Protocol References:
ASTM = ASTM International
MCAWW = "Methods For Chemical Analysis Of Water And Wastes", EPA-600/4-79-020, March 1983 And Subsequent Revisions.
01 CORP = 01 Corporation Instrument Manual.
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Env, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
TAL SAV = Eurofins TestAmerica, Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins TestAmerica, Savannah
Page 2 of 25 3/26/2021

Sample Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Lab Sample ID Client Sample ID Matrix Collected Received Asset ID
680-196438-2 ABF-BF005-F006 Water 03/15/21 10:30 03/18/21 15:31
680-196438-3 ABF-MW029-F006 Water 03/15/21 12:25 03/18/21 15:31
680-196438-4 ABF-MW033-F006 Water 03/15/21 13:15 03/18/21 15:31
680-196438-5 ABF-MW035-F006 Water 03/15/21 14:20 03/18/21 15:31
680-196438-6 ABF-MW037-F006 Water 03/15/21 15:40 03/18/21 15:31
680-196438-7 ABF-MW039-F006 Water 03/15/21 16:30 03/18/21 15:31
680-196438-8 ABF-MW046-F006 Water 03/16/21 16:45 03/18/21 15:31
Eurofins TestAmerica, Savannah
Page 3 of 25 3/26/2021

Definitions/Glossary
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Qualifiers
HPLC/IC
Qualifier
Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
G Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins TestAmerica, Savannah
Page 4 of 25 3/26/2021

Case Narrative
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Job ID: 680-196438-2
Laboratory: Eurofins TestAmerica, Savannah
Narrative
CASE NARRATIVE
Client: Civil & Environmental Consultants Inc
Project: Alcoa - Groundwater & Waste Characteriza
Report Number: 680-196438-2
With the exceptions noted as flags or footnotes, standard analytical protocols were followed in the analysis of the samples and no
problems were encountered or anomalies observed. In addition all laboratory quality control samples were within established control
limits, with any exceptions noted below. Each sample was analyzed to achieve the lowest possible reporting limit within the constraints of
the method. In the event of interference or analytes present at high concentrations, samples may be diluted. For diluted samples, the
reporting limits are adjusted relative to the dilution required.
RECEIPT
The samples were received on 03/18/2021; the samples arrived in good condition, properly preserved and on ice. The temperature of the
coolers at receipt was 1.1 C.
FREE CYANIDE
Samples ABF-BF005-F006 (680-196438-2), ABF-MW029-F006 (680-196438-3), ABF-MW033-F006 (680-196438-4), ABF-MW035-F006
(680-196438-5), ABF-MW037-F006 (680-196438-6), ABF-MW039-F006 (680-196438-7) and ABF-MW046-F006 (680-196438-8) were
analyzed for free cyanide in accordance with 1677. The samples were analyzed on 03/24/2021.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
ANIONS BY ION CHROMATOGRAPHY (28 DAY)
Samples ABF-BF005-F006 (680-196438-2), ABF-MW029-F006 (680-196438-3), ABF-MW033-F006 (680-196438-4), ABF-MW035-F006
(680-196438-5), ABF-MW037-F006 (680-196438-6), ABF-MW039-F006 (680-196438-7) and ABF-MW046-F006 (680-196438-8) were
analyzed for Anions by Ion Chromatography (28 Day) in accordance with EPA Method 300.0. The samples were analyzed on 03/22/2021,
03/23/2021 and 03/25/2021.
Samples ABF-MW029-F006 (680-196438-3)[5X], ABF-MW033-F006 (680-196438-4)[5X], ABF-MW037-F006 (680-196438-6)[5X],
ABF-MW046-F006 (680-196438-8)[10X] and ABF-MW046-F006 (680-196438-8)[5X] required dilution prior to analysis. The reporting limits
have been adjusted accordingly.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
CYANIDE
Samples ABF-BF005-F006 (680-196438-2), ABF-MW029-F006 (680-196438-3), ABF-MW033-F006 (680-196438-4), ABF-MW035-F006
(680-196438-5), ABF-MW037-F006 (680-196438-6), ABF-MW039-F006 (680-196438-7) and ABF-MW046-F006 (680-196438-8) were
analyzed for cyanide in accordance with D7511-12. The samples were analyzed on 03/23/2021.
Samples ABF-MW029-F006 (680-196438-3)[100X], ABF-MW033-F006 (680-196438-4)[5X], ABF-MW037-F006 (680-196438-6)[5X] and
ABF-MW046-F006 (680-196438-8)[100X] required dilution prior to analysis. The reporting limits have been adjusted accordingly.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Eurofins TestAmerica, Savannah
Page 5 of 25 3/26/2021

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Client Sample ID: ABF-BF005-F006
Date Collected: 03/15/21 10:30
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-2
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 17 1.0 0.40 mg/L 03/22/21 18:53 1
Fluoride 1.1 0.10 0.040 mg/L 03/22/21 18:53 1
Chloride 3.1 0.50 0.20 mg/L 03/22/21 18:53 1
Bromide <0.20 0.50 0.20 mg/L 03/22/21 18:53 1
General Chemistry
Analyte
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.017 0.0060 0.0020 mg/L 03/23/21 16:35 1
<0.00079 0.0020 0.00079 mg/L 03/24/21 21:32 1
Client Sample ID: ABF-MW029-F006
Date Collected: 03/15/21 12:25
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-3
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 680 5.0 2.0 mg/L 03/22/21 22:02 5
Fluoride 13 0.50 0.20 mg/L 03/22/21 22:02 5
Chloride 26 2.5 1.0 mg/L 03/22/21 22:02 5
Bromide 1.2 J 2.5 1.0 mg/L 03/22/21 22:02 5
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
12 0.60 0.20 mg/L 03/23/21 18:01 100
0.012 0.0020 0.00079 mg/L 03/24/21 21:33 1
Client Sample ID: ABF-MW033-F006
Date Collected: 03/15/21 13:15
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-4
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit
Sulfate 28 1.0 0.40 mg/L
Chloride 3.3 0.50 0.20 mg/L
Bromide <0.20 0.50 0.20 mg/L
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography - DL
Analyte Result Qualifier RL MDL Unit
Fluoride 44 0.50 0.20 mg/L
General Chemistry
Analyte Result Qualifier RL MDL Unit
Cyanide, Total 0.42 0.030 0.010 mg/L
Cyanide, Free <0.00079 0.0020 0.00079 mg/L
D Prepared
D Prepared
Analyzed Dil Fac
03/22/21 20:34 1
03/22/21 20:34 1
03/22/21 20:34 1
Analyzed Dil Fac
D Prepared
03/23/21 20:41 5
Analyzed Dil Fac
03/23/21 17:49 5
03/24/21 21:35 1
Client Sample ID: ABF-MW035-F006 Lab Sample ID: 680-196438-5
Date Collected: 03/15/21 14:20 Matrix: Water
Date Received: 03/18/21 15:31
r
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 16 1.0 0.40 mg/L 03/22/21 20:46 1
Fluoride 6.3 0.10 0.040 mg/L 03/22/21 20:46 1
Eurofins TestAmerica, Savannah
Page 6 of 25 3/26/2021

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Client Sample ID: ABF-MW035-F006
Date Collected: 03/15/21 14:20
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-5
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography (Continued)
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 0
3.0 0.50 0.20 mg/L 03/22/21 20:46 1
0.21 J 0.50 0.20 mg/L 03/22/21 20:46 1
Chloride
Bromide
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total 0.065 0.0060 0.0020 mg/L 03/23/21 17:23 1
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 03/24/21 21:36 1
Client Sample ID: ABF-MW037-F006
Date Collected: 03/15/21 15:40
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-6
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit
D Prepared
Sulfate 100 1.0 0.40 mg/L
Chloride 4.5 0.50 0.20 mg/L
Bromide 0.20 J 0.50 0.20 mg/L
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography - DL
Analyte Result Qualifier RL MDL Unit
D Prepared
Analyzed Dil Fac
03/22/21 20:59 1
03/22/21 20:59 1
03/22/21 20:59 1
Analyzed Dil Fac
Fluoride 28 0.50 0.20 mg/L
General Chemistry
Analyte Result Qualifier RL MDL Unit
Cyanide, Total 0.21 0.030 0.010 mg/L
Cyanide, Free <0.00079 0.0020 0.00079 mg/L
D Prepared
03/23/21 20:54 5
Analyzed Dil Fac
03/23/21 17:51 5
03/24/21 21:38 1
Client Sample ID: ABF-MW039-F006
Date Collected: 03/15/21 16:30
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-7
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 24 1.0 0.40 mg/L 03/22/21 21:12 1
Fluoride <0.040 0.10 0.040 mg/L 03/22/21 21:12 1
Chloride 2.6 0.50 0.20 mg/L 03/22/21 21:12 1
Bromide <0.20 0.50 0.20 mg/L 03/22/21 21:12 1
General Chemistry
Analyte
Cyanide, Total
Cyanide, Free
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
<0.0020 0.0060 0.0020 mg/L
<0.00079 0.0020 0.00079 mg/L
Client Sample ID: ABF-MW046-F006
Date Collected: 03/16/21 16:45
Date Received: 03/18/21 15:31
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit
Sulfate 59 5.0 2.0 mg/L
Chloride 5.9 2.5 1.0 mg/L
Bromide 1.0 J 2.5 1.0 mg/L
03/23/21 17:03 1
03/24/21 21:45 1
Lab Sample ID: 680-196438-8
Matrix: Water
D Prepared
Analyzed Dil Fac
03/22/21 22:15 5
03/22/21 22:15 5
03/22/21 22:15 5
6
Eurofins TestAmerica, Savannah
Page 7 of 25 3/26/2021

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Client Sample ID: ABF-MW046-F006
Date Collected: 03/16/21 16:45
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-8
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography - DL
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride 88 1.0 0.40 mg/L 03/25/21 00:09 10
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total 2.9 0.60 0.20 mg/L 03/23/21 17:59 100 r
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 03/24/21 21:47 1
6
Eurofins TestAmerica, Savannah
Page 8 of 25 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Lab Sample ID: MB 680-660755/2
Matrix: Water
Analysis Batch: 660755
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate <0.40 1.0 0.40 mg/L 03/22/21 12:29 1
Fluoride <0.040 0.10 0.040 mg/L 03/22/21 12:29 1
Chloride <0.20 0.50 0.20 mg/L 03/22/21 12:29 1
Bromide <0.20 0.50 0.20 mg/L 03/22/21 12:29 1
Lab Sample ID: LCS 680-660755/3
Matrix: Water
Analysis Batch: 660755
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Sulfate 10.0 9.98 mg/L 100 90 - 110
Fluoride 2.00 2.05 mg/L 103 90 - 110
Chloride 10.0 9.99 mg/L 100 90 - 110
Bromide 10.0 9.87 mg/L 99 90. 110
Lab Sample ID: LCSD 680-660755/4
Matrix: Water
Analysis Batch: 660755
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 10.0 10.0 mg/L 100 90 _ 110 0 15
Fluoride 2.00 2.06 mg/L 103 90 _ 110 0 15
Chloride 10.0 9.99 mg/L 100 90 _ 110 0 15
Bromide 10.0 9.89 mg/L 99 90 _ 110 0 15
Lab Sample ID: MB 680-660756/33
Matrix: Water
Analysis Batch: 660756
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate <0.40 1.0 0.40 mg/L 03/22/21 19:18 1
Fluoride <0.040 0.10 0.040 mg/L 03/22/21 19:18 1
Chloride <0.20 0.50 0.20 mg/L 03/22/21 19:18 1
Bromide <0.20 0.50 0.20 mg/L 03/22/21 19:18 1
Lab Sample ID: LCS 680-660756/34
Matrix: Water
Analysis Batch: 660756
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Sulfate 10.0 9.75 mg/L 98 90 - 110
Fluoride 2.00 2.04 mg/L 102 90. 110
Chloride 10.0 10.0 mg/L 100 90. 110
Bromide 10.0 9.89 mg/L 99 90 _ 110
Lab Sample ID: LCSD 680-660756/35
Matrix: Water
Analysis Batch: 660756
Analyte
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 10.0 9.75 mg/L 98 90 _ 110 0 15
Eurofins TestAmerica, Savannah
Page 9 of 25 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography (Continued)
Lab Sample ID: LCSD 680-660756/35
Matrix: Water
Analysis Batch: 660756
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Fluoride 2.00 2.05 mg/L 102 90 - 110 0 15
Chloride 10.0 10.0 mg/L 100 90 - 110 0 15
Bromide 10.0 9.87 mg/L 99 90 - 110 0 15
Lab Sample ID: MB 680-660928/2
Matrix: Water
Analysis Batch: 660928
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate <0.40 1.0 0.40 mg/L 03/23/21 11:30 1
Fluoride <0.040 0.10 0.040 mg/L 03/23/21 11:30 1
Chloride <0.20 0.50 0.20 mg/L 03/23/21 11:30 1
Bromide <0.20 0.50 0.20 mg/L 03/23/21 11:30 1
Lab Sample ID: LCS 680-660928/3
Matrix: Water
Analysis Batch: 660928
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Sulfate 10.0 10.0 mg/L 100 90 - 110
Fluoride 2.00 2.03 mg/L 102 90 - 110
Chloride 10.0 9.98 mg/L 100 90 - 110
Bromide 10.0 9.85 mg/L 99 90 - 110
Lab Sample ID: LCSD 680-660928/4
Matrix: Water
Analysis Batch: 660928
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 10.0 10.1 mg/L 101 90 - 110 1 15
Fluoride 2.00 2.05 mg/L 103 90 _ 110 1 15
Chloride 10.0 10.0 mg/L 100 90 _ 110 0 15
Bromide 10.0 9.86 mg/L 99 90 _ 110 0 15
Lab Sample ID: MB 680-661199/33
Matrix: Water
Analysis Batch: 661199
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate <0.40 1.0 0.40 mg/L 03/24/21 21:37 1
Fluoride <0.040 0.10 0.040 mg/L 03/24/21 21:37 1
Chloride <0.20 0.50 0.20 mg/L 03/24/21 21:37 1
Bromide <0.20 0.50 0.20 mg/L 03/24/21 21:37 1
Lab Sample ID: LCS 680-661199/34
Matrix: Water
Analysis Batch: 661199
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Sulfate 10.0 10.0 mg/L
100 90 - 110
Fluoride 2.00 2.05 mg/L 103 90 - 110
Eurofins TestAmerica, Savannah
Page 10 of 25 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography (Continued)
Lab Sample ID: LCS 680-661199/34
Matrix: Water
Analysis Batch: 661199
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Analyte Added Result Qualifier Unit D %Rec Limits
Chloride 10.0 10.0 mg/L 100 90 - 110
Bromide 10.0 9.88 mg/L 99 90_ 110
Lab Sample ID: LCSD 680-661199/35
Matrix: Water
Analysis Batch: 661199
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 10.0 10.1 mg/L 101 90_ 110 0 15
Fluoride 2.00 2.06 mg/L 103 90 _ 110 0 15
Chloride 10.0 10.0 mg/L 100 90 _ 110 0 15
Bromide 10.0 9.89 mg/L 99 90_ 110 0 15
Method: D7511-12 - Total Cyanide
Lab Sample ID: MB 410-107202/17
Matrix: Water
Analysis Batch: 107202
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020 0.0060 0.0020 mg/L 03/23/21 16:07 1
Lab Sample ID: MB 410-107202/47
Matrix: Water
Analysis Batch: 107202
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020
Lab Sample ID: LCS 410-107202/16
Matrix: Water
Analysis Batch: 107202
Analyte
0.0060 0.0020 mg/L
03/23/21 17:07 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Total
Lab Sample ID: LCS 410-107202/46
Matrix: Water
Analysis Batch: 107202
Analyte
0.0400 0.0381 mg/L 95 84 - 116
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Total
0.0300 0.0307 mg/L 102 84 - 116
Method: OIA-1677 - Cyanide, Free (Flow Injection)
Lab Sample ID: MB 180-350778/21
Matrix: Water
Analysis Batch: 350778
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 03/24/21 21:26 1
Eurofins TestAmerica, Savannah
Page 11 of 25 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
Method: OIA-1677 - Cyanide, Free (Flow Injection) (Continued)
pLab Sample ID: LCS 180-350778/20
Matrix: Water
Analysis Batch: 350778
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Free
0.0500 0.0528 mg/L 106 82. 132
Eurofins TestAmerica, Savannah
Page 12 of 25 3/26/2021

Client: Civil & Environmental Consultants Inc
QC Association Summary
Job ID: 680-196438-2
HPLC/IC
Analysis Batch: 660755
Lab Sample ID
Client Sample ID
Prep Type Matrix
Method
Prep Batch
680-196438-2
MB 680-660755/2
LCS 680-660755/3
LCSD 680-660755/4
Analysis Batch: 660756
Lab Sample ID
ABF-BF005-F006
Method Blank
Lab Control Sample
Lab Control Sample Dup
Client Sample ID
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Prep Type Matrix
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
Method
Prep Batch
680-196438-3
680-196438-4
680-196438-5
680-196438-6
680-196438-7
680-196438-8
MB 680-660756/33
LCS 680-660756/34
LCSD 680-660756/35
Analysis Batch: 660928
Lab Sample ID
ABF-MW029-F006
ABF-MW033-F006
ABF-MW035-F006
ABF-MW037-F006
ABF-MW039-F006
ABF-MW046-F006
Method Blank
Lab Control Sample
Lab Control Sample Dup
Client Sample ID
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Prep Type Matrix
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
Method
Prep Batch
680-196438-4 - DL
680-196438-6 - DL
MB 680-660928/2
LCS 680-660928/3
LCSD 680-660928/4
Analysis Batch: 661199
Lab Sample ID
ABF-MW033-F006
ABF-MW037-F006
Method Blank
Lab Control Sample
Lab Control Sample Dup
Client Sample ID
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Prep Type Matrix
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
Method
Prep Batch
680-196438-8 - DL
MB 680-661199/33
LCS 680-661199/34
LCSD 680-661199/35
ABF-MW046-F006
Method Blank
Lab Control Sample
Lab Control Sample Dup
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
General Chemistry
Analysis Batch: 107202
Lab Sample ID
680-196438-2
680-196438-3
680-196438-4
680-196438-5
680-196438-6
680-196438-7
680-196438-8
MB 410-107202/17
MB 410-107202/47
LCS 410-107202/16
LCS 410-107202/46
Client Sample ID
Prep Type
Matrix
Method
Analysis Batch: 350778
Lab Sample ID
ABF-BF005-F006
ABF-MW029-F006
ABF-MW033-F006
ABF-MW035-F006
ABF-MW037-F006
ABF-MW039-F006
ABF-MW046-F006
Method Blank
Method Blank
Lab Control Sample
Lab Control Sample
Client Sample ID
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Prep Type
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Matrix
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
Method
Prep Batch
Prep Batch
680-196438-2
680-196438-3
ABF-BF005-F006
ABF-MW029-F006
Total/NA Water OIA-1677
Total/NA Water OIA-1677
Eurofins TestAmerica, Savannah
Page 13 of 25 3/26/2021

QC Association Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-2
General Chemistry (Continued)
Analysis Batch: 350778 (Continued)
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
680-196438-4 ABF-MW033-F006 Total/NA Water OIA-1677
680-196438-5 ABF-MW035-F006 Total/NA Water OIA-1677
680-196438-6 ABF-MW037-F006 Total/NA Water OIA-1677
680-196438-7 ABF-MW039-F006 Total/NA Water OIA-1677
680-196438-8 ABF-MW046-F006 Total/NA Water OIA-1677
MB 180-350778/21 Method Blank Total/NA Water OIA-1677
LCS 180-350778/20 Lab Control Sample Total/NA Water OIA-1677
Eurofins TestAmerica, Savannah
Page 14 of 25 3/26/2021

Lab Chronicle
Client Sample ID: ABF-BF005-F006
Date Collected: 03/15/21 10:30
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-2
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660755 03/22/21 18:53 UI TAL SAV
Instrument ID: CICK
Analysis D7511-12 1 107202 03/23/21 16:35 UJE2 ELLE
Instrument ID: 19369
Analysis OIA-1677 1 350778 03/24/21 21:32 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: ABF-MW029-F006
Date Collected: 03/15/21 12:25
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-3
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 5 5 mL 5 mL 660756 03/22/21 22:02 Ul TAL SAV
Instrument ID: CICK
Analysis D7511-12 100 107202 03/23/21 18:01 UJE2 ELLE
Instrument ID: 19369
Analysis OIA-1677 1 350778 03/24/21 21:33 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: ABF-MW033-F006
Date Collected: 03/15/21 13:15
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-4
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660756 03/22/21 20:34 Ul TAL SAV
Instrument ID: CICK
Total/NA Analysis 300.0-1993 R2.1 DL 5 5 mL 5 mL 660928 03/23/21 20:41 T1C TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 5 107202 03/23/21 17:49 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 21:35 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: ABF-MW035-F006
Date Collected: 03/15/21 14:20
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-5
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660756 03/22/21 20:46 UI TAL SAV
Instrument ID: LICK
Total/NA Analysis D7511-12 1 107202 03/23/21 17:23 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 21:36 GRB TAL PIT
Instrument ID: ALPKEM3
Eurofins TestAmerica, Savannah
Page 15 of 25 3/26/2021

Lab Chronicle
Client Sample ID: ABF-MW037-F006
Date Collected: 03/15/21 15:40
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-6
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660756 03/22/21 20:59 UI TAL SAV
Instrument ID: CICK
Total/NA Analysis 300.0-1993 R2.1 DL 5 5 mL 5 mL 660928 03/23/21 20:54 T1C TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 5 107202 03/23/21 17:51 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 21:38 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: ABF-MW039-F006
Date Collected: 03/15/21 16:30
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-7
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1
Instrument ID: CICK
Analysis D7511-12
Instrument ID: 19369
Analysis OIA-1677
Instrument ID: ALPKEM3
1 5 mL
1
1
5 mL 660756 03/22/21 21:12 Ul TAL SAV
107202 03/23/21 17:03 UJE2 ELLE
350778 03/24/21 21:45 GRB TAL PIT
Client Sample ID: ABF-MW046-F006
Date Collected: 03/16/21 16:45
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-8
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 5 5 mL 5 mL 660756 03/22/21 22:15 Ul TAL SAV
Instrument ID: CICK
Total/NA Analysis 300.0-1993 R2.1 DL 10 5 mL 5 mL 661199 03/25/21 00:09 UI TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 100 107202 03/23/21 17:59 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 21:47 GRB TAL PIT
Instrument ID: ALPKEM3
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Env, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
TAL SAV = Eurofins TestAmerica, Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins TestAmerica, Savannah
Page 16 of 25 3/26/2021

0)
N
r
r
Chain of Custody Record
0
Ln
1)
5102 LaRoche Avenue
I.
o N
O (0
U
Page
Page 1 ofa
o
Preservation Codes:
A - HCL M - Hexane
B -NaOH N - None
C - Zn Acetate 0 - AsNa02
D - Nitnc Aod P - Na2O4S
E - NaHSO4 0 - Na2S03
F - Me0H R - Na2S2O3
G - Amchlor S - H2SO4
H - Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J - DI Water V - MCAA
K - EDTA W • pH 4-5
L - EDA Z - other (specify)
Other:
la
o
V
«�
yup
R111111111
rH
Sample Disposal (A fee may be assessed if samples are retained longer than 1 month)
Return To Client Disposal By Lab Archive For Months
Special Instructions/CC Requirements
'Empty Kit Relinquished by. IDate lime 'Method of Shipment
o
U_
SP
A
E
0
n
E
U
Coder Temperatures) °C and Other Remarks 1 '� ' f •�
Apo
sn3
ao
wey3
8CP961-089
11
^
'T
T--
r
%
f —,
0\
'
z
Lamer Tracking Nolsl
a
2
N
Analysis Requested
tioulRuoa ►o ...gwnN IRol
Co,e/ S1'2 l yOLhL f d0100 8- j 1.
x
&QI0/
14d1-)ohob
Received y 13) rt
rr
vho 7 if LLB 1 60
1\r•TDA
kX
*�
7G
X
71,
4-.
x
Lab PM
Hoffman, Sheila B
E-Mail
Sheila Hoffman@Eurofinset com
43 Ii5L.0
"riit13
r°ia-1. 0 '00c
)(
)(
7"
X1-,
X
x
k
ssi-aonz
z
9-00e - 8OI.z9
z
•aea0 V 110 • arm
N
x
WnuIWnlV - VMO L'OOZ
t]
X
wuowwV-'J-CHNOO9WdS
h
' 7
_ .., . ... R, . ,_0
Hpd�i)
,-
,it
o
U
Company
0
U
Custody Seals Intact 'Custody Seal No
L Yes A No
(ON aO Njj aldw'S
MINN PIMA
Possible Hazard Identification `
I Non -Hazard I 1 Flammable Skin Irritant I Poison B I Unknown Radiological
Deliverable Requested' I, II, III, IV, Other (specify)
a
Due Date Requested:
TAT Requested (days):
[Compliance Project: T Yes t No
PO — I
Purchase Order Requested
Project
#
68025248
Matrix
(w•warar.
s•aoiw.
o•waariou.
BT•Tbaua, A•AH)
Water
'-')
Sampler
O
0
!-'
2
a
0�
0
.
a
E a u"
h~i;�
E
Q
_
o
r
0
0
a
�-
Company
Civil & Environmental Consultants Inc
id
—
0
_
__Z,
u
3
E
toC2
i
C.
Cn
,
C�
�'�
1
Ch
t'n
M
Client Information•
Client Contact
Matt Ginther
Address
3701 Arco Corporate Drive Suite 400
City
Charlotte
Stale. Zip
NC, 28273
a
Email
[e-mail]
Protect Name
boo- (9.00l3
Sample Identification
Out005-13-2.050
SI
0
O�Q
§N1-.1
0
0
.
O41`
0
St•.�
,a`
'3
—a
t
,
Relinquished by / { /, -
at
r
m
Page 17 of 25
3/26/2021

Charlotte 229
Chain of Custody Record
COC No
680-123943-46437.1
Page
Page of 2
Da
Preservation Codes:
A - I-ICL M Hexane
B -NaOH N - None
C Zn Acetate 0 - AsNa02
D - Ndnc Acid P - Na204S
E - NaHSO4 Q - Na2S03
F - Me0H R - Na2S203
G • Amchlor S • H2SO4
H • Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J DI Water V - MCAA
K -EDTA W-pH4-5
L - EDA Z - otter (specify)
Other
�
zs
VfU'
u)
I
Sample Disposal (A fee may b9 assessed if samples are retained longer than 1 month)
Return To Client Disposal By Lab Archive For Months
Special Instructions/QC Requirements
..r
I
TICompany
Custody Seals Intact 'Custody Seal No Cooer Temperatures) `C and Other Remarks \ `�
AYes ANo 11 li
r
Career Tracking No(s)
State of Ongin
Analysis Requested
sJeulquoo jo JiQwnN IRol
;
yII1
l
I
—
III
(nlikv)Nv viv l;"^t/ 4L9 l 4Y-1-0
'Empty Kit Relinquished by (Date ITlme (Method of
$
•,
'' `
ill
Company ./`_„T
L f
111115
k) %-,w- u c)z. c
>,
III
4(r4 LA Q•QQc
k
AI
—
Lab PM
(Hoffman, Sheila B
CB
w
? L
w �
Auuawual-.«oo
z
ue-as
m
oPW�06
opi
m
U
aen-dr3T-vON
z
111111111111
(ON JO $.A) OSW/SW 1d
c
E_
(ON JO SOA) sldweS P.'.w PIMA
Preservation Code:
Possible Hazard Identification
Non -Hazard I I Flammable Skin lrrrtant 1 Poison 8 U Unknown I I Radiological
Deliverable Requested I, II, III. IV, Other (specify)
Due Date Requested:
TAT Requested (days):
(Compliance Project: ' Yes A No
PO#
Purchase Order Requested
Project #
68025248
Matrix
(W-water,
s•.aa.
o•wswra.
BT•T Sue. MAtr)
_
da
60
QI
a n c �
rn~UC7
Company
Civil & Environmental Consultants Inc
to H`
'
`
•
+EIRE
Sample Date
r
III
Address
2704 Cherokee Farm Way Suite 101
City
Knoxville
State. Zip.
TN, 37920
s
( Email
[e-mail]
Project Name
300-226.0013
��
d
d
cn
Sample Identification
;
O
mo
.
it
•
(
•o
1
%
Ct
1�
1
0
ow
.
1
0
cp
1
°
c)
ik
I
Z
°NI
Client Information
Client Contact
Michael Worden
-1
.'
•
Y
=
Page 18 of 25
3/26/2021

0
QJ
Chain of Custody Record
COC No j
680-647348 1
N
& al
N
a' d
!Job a
680-196438-1
Preservation Codes:
A - HCL M - Hexane
B - NaOH N - None
C - Zn Acetate 0 - AsNaO2
D - Nitric Acid P - Na2O4S
E - NaHSO4 0 - Na2S03
F -MeOH R-Na2S203
G • Amchlor S - H2SO4
H • Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J • DI Water V - MCAA
K • EDTA W - pH 4.5
L - EDA Z • other (specuh.
Other:
Special Instructions/Note:
Note Since laboratory accreddahons are subject to change. Eurofins TestAmenca places the ownership of method analyle 8 accreditation compliance upon out subcontract laboratories This sample shipment is forwarded under chain -of -custody If the laboratory does not currently
maintain accreditation in the State of Origin listed above for analysis/tests/matrix being analyzed. the samples must be shipped back to the Eurofins TestAmenca laboratory or other instructions wdl be provided Any changes to accreditation status should be brought to Eurofins
TestAmenca attention immediately If alt requested accreditation are current to date. return the signed Chain of Custody attesting to said comphcance to Eurofins TestAmenca
Sample Disposal ( A fee may be assessed if samples are retained longer than 1 month)
Return To Client 0 Disposal By Lab Archive For Mon.
Special Instructions/QC Requirements
'Empty Kit Relinquished by. IDate. ITlme 'Method of Shipment
E
E
0
U
E
E
0
U
n
E
0
U
Cooler Temperalurels) °C and Other Remarks
v
E
o
t
m
O
%m
m
o
Career Tracking NO(S)
Stale of Ong°
North Carolina
Accreditations Required (See note)
State - North Carolina (WW/SW)
Analysis Requested
wewquoa;o JeqwnN L5 of
Received by
a
m
d
d
CC
Received by 1
Lab PM
Hoffman. Sheila B
E-Mail
Sheila Hoffman@Eurofinset com
dno-pasolo suai .A suad'Apimepu61 mow
X
(ON Jo SSA) OSW/SW uuoYedx
n
0
0
o
0
U
T
u
0
0
(Custody Seal No
(ON Jo SSA) eldw,S pueUld PIMA
Possible Hazard Identification
Unconfirmed
Deliverable Requested 1, 11. III, IV. Other (specify) Primary Deliverable Rank 2
Company
Eurofins Lancaster Laboratories Env LLC
TAT Requested (days):
6rotect u
68025248
?Lc si_ a 2 3
a; y T• _
0
m
LPreservation Code:
4.53
u0
3
Z.ogm
E ]4.. u o
co F- u u
h V0
m
dmE.'D
0
m
CtQ
0
m
0
c
ia ?
la E
o r
a
M v
" a
o
w
w
v
m
K N
y
O N
N
aO
U
w
Sample Date
N
(O
zM
Client Information (Sub Contract Lab)
Client Contact
Shipping/Receiving
Address
2425 New Holland Pike. .
03
l0
u
U J
Slate Zup
PA, 17601
Phone
717-656-2300(Tel)
W
Project Name
Alcoa - Groundwater 8 Waste Characterize
mN
Sample Identification - Client ID (Lab ID)
ABF-WC001-F006 (680-196438-9)
Relinquished by
Relinquished by
Relinquished by
Custody Seals Intact.
A Yes n No
1I/01/2020
Page 19 of 25
3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-2
Login Number: 196438
List Number: 1
Creator: Daughtry, Beth A
Question
List Source: Eurofins TestAmerica, Savannah
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. True
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins TestAmerica, Savannah
Page 20 of 25 3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-2
Login Number: 196438
List Number: 2
Creator: Phillips, Ann -Marie E
Question
List Source: Eurofins Lancaster Laboratories Env
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal is intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable (</=6C, not frozen). True
Cooler Temperature is recorded. True
WV: Container Temperature is acceptable (</=6C, not frozen). N/A
WV: Container Temperature is recorded. N/A
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
There is sufficient vol. for all requested analyses. True
Multiphasic samples are not present. True
Samples do not require splitting or compositing. N/A
Is the Field Sampler's name present on COC? True
Sample Preservation Verified. N/A
Residual Chlorine Checked. N/A
Sample custody seals are intact. N/A
Eurofins TestAmerica, Savannah
Page 21 of 25 3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-2
Login Number: 196438
List Number: 4
Creator: Miller, Wesley R
Question
List Source: Eurofins Lancaster Laboratories Env
List Creation: 03/20/21 03:04 PM
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal is intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable (</=6C, not frozen). True
Cooler Temperature is recorded. True
WV: Container Temperature is acceptable (</=6C, not frozen). N/A
WV: Container Temperature is recorded. N/A
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
There is sufficient vol. for all requested analyses. True
Multiphasic samples are not present. True
Samples do not require splitting or compositing. N/A
Is the Field Sampler's name present on COC? False
Sample Preservation Verified. N/A
Residual Chlorine Checked. N/A
Sample custody seals are intact. N/A
Received project as a subcontract.
Eurofins TestAmerica, Savannah
Page 22 of 25 3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-2
Login Number: 196438
List Number: 3
Creator: Kovitch, Christina M
Question
List Source: Eurofins TestAmerica, Pittsburgh
List Creation: 03/18/21 07:31 PM
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. True
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins TestAmerica, Savannah
Page 23 of 25 3/26/2021

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Job ID: 680-196438-2
Laboratory: Eurofins TestAmerica, Savannah
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 269 12-31-21
Laboratory: Eurofins Lancaster Laboratories Env, LLC
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority Program Identification Number Expiration Date
A2LA Dept. of Defense ELAP 1.01 11-30-22
Alaska State PA00009 06-30-21
Alaska (UST) State 17-027 01-31-21 *
Arizona State AZ0780 03-12-22
Arkansas DEQ State 19-053-0 08-09-21
California State 2792 01-31-22
Colorado State PA00009 06-30-21
Connecticut State PH-0746 06-30-21
DE Haz. Subst. Cleanup Act (HSCA) State 019-006 (PA cert) 01-31-22
Delaware (DW) State N/A 02-01-22
Florida NELAP E87997 07-01-21
Hawaii State N/A 01-31-22
Illinois NELAP 004559 01-31-22
Iowa State 361 03-02-22
Kansas NELAP E-10151 10-31-21
Kentucky (DW) State KY90088 01-01-22
Kentucky (UST) State 1.01 11-30-22
Kentucky (WW) State KY90088 12-31-21
Louisiana NELAP 02055 06-30-21
Maine State 2019012 03-12-22
Maryland State 100 06-30-21
Massachusetts State M-PA009 06-30-21
Michigan State 9930 01-31-22
Minnesota NELAP 042-999-487 12-31-21
Missouri State 450 01-31-22
Montana (DW) State 0098 01-01-22
Montana (UST) State 0098 01-01-22
Nebraska State NE-OS-32-17 01-31-20 *
Nevada State PA000092019-3 07-31-21
New Hampshire NELAP 273019 01-10-22
New Jersey NELAP PA011 06-30-21
New York NELAP 10670 04-01-21
North Carolina (DW) State 42705 07-31-21
North Carolina (WW/SW) State 521 12-31-21
North Dakota State R-205 01-31-22
Oklahoma NELAP R-205 08-31-21
Oregon NELAP PA200001-018 09-12-21
PALA Canada 1978 05-08-21
Pennsylvania NELAP 36-00037 01-31-22
Rhode Island State LA000338 01-31-22
South Carolina State 89002002 01-31-22
Tennessee State 02838 01-31-22
Texas NELAP T104704194-20-38 08-31-21
Utah NELAP PA000092019-16 03-01-22
Vermont State VT - 36037 10-29-21
* Accreditation/Certification renewal pending - accreditation/certification considered valid.
Eurofins TestAmerica, Savannah
Page 24 of 25 3/26/2021

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Job ID: 680-196438-2
Laboratory: Eurofins Lancaster Laboratories Env, LLC (Continued)
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority Program Identification Number Expiration Date
Virginia NELAP 10561 06-14-21
Washington State C457 04-11-21
West Virginia (DW) State 9906 C 12-31-21
West Virginia DEP State 055 06-30-21
Wyoming State 8TMS-L 01-31-22
Wyoming (UST) A2LA 1.01 11-30-22
Laboratory: Eurofins TestAmerica, Pittsburgh
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 434 12-31-21
Eurofins TestAmerica, Savannah
Page 25 of 25 3/26/2021

Draft — Hydrogeological Conceptual Site Model Update — Badin Business Park
680-196438-4; Outfall 005 System Samples
EHS Support LLC

LINKS
Review your project
results through
�TotaAccesss
Have a Question?
j Ask
,jThe
kw Ex ert
Visit us at:
www. eurofinsus.comfEnv
eurofins
ti
Environment Testing
America
ANALYTICAL REPORT
Eurofins TestAmerica, Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Tel: [phone]
Laboratory Job ID: 680-196438-4
For:
Civil & Environmental Consultants Inc
2704 Cherokee Farm Way
Suite 101
Knoxville, Tennessee 37920
Attn: Michael Worden
Authorized for release by:
3/26/2021 1:24:50 PM
Sheila Hoffman, Project Manager II
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for
accredited parameters, exceptions are noted in this report. This report may not be reproduced
except in full, and with written approval from the laboratory. For questions please contact the
Project Manager at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Method Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Method Method Description Protocol Laboratory
300.0-1993 R2.1 Anions, Ion Chromatography MCAWW TAL SAV
D7511-12 Total Cyanide ASTM ELLE
OIA-1677 Cyanide, Free (Flow Injection) 01 CORP TAL PIT
Protocol References:
ASTM = ASTM International
MCAWW = "Methods For Chemical Analysis Of Water And Wastes", EPA-600/4-79-020, March 1983 And Subsequent Revisions.
01 CORP = 01 Corporation Instrument Manual.
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Env, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
TAL SAV = Eurofins TestAmerica, Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins TestAmerica, Savannah
Page 2 of 28 3/26/2021

Sample Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Lab Sample ID Client Sample ID
Matrix
Collected Received Asset ID
680-196438-10
680-196438-11
680-196438-12
680-196438-13
680-196438-14
680-196438-15
680-196438-16
680-196438-17
680-196438-18
680-196438-19
680-196438-20
WSPL-SEEP
Out005-North Sump
Out005-South Sump
Out005-01-2.510
Out005-06-2.400
Out005-07-2.210
Out005-08-2.200
Out005-09-2.100
Out005-12-2.000
Out005-10-6.100
Out005-11-6.000
Water 03/16/21 14:40 03/18/21 15:31
Water 03/16/21 15:48 03/18/21 15:31
Water 03/16/21 16:35 03/18/21 15:31
Water 03/16/21 14:00 03/18/21 15:31
Water 03/17/21 09:45 03/18/21 15:31
Water 03/17/21 10:00 03/18/21 15:31
Water 03/17/21 10:20 03/18/21 15:31
Water 03/17/21 10:45 03/18/21 15:31
Water 03/17/21 11:00 03/18/21 15:31
Water 03/17/21 12:20 03/18/21 15:31
Water 03/17/21 12:40 03/18/21 15:31
Eurofins TestAmerica, Savannah
Page 3 of 28 3/26/2021

Definitions/Glossary
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Qualifiers
HPLC/IC
Qualifier
Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
General Chemistry
Qualifier Qualifier Description
F1 MS and/or MSD recovery exceeds control limits.
F2 MS/MSD RPD exceeds control limits
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins TestAmerica, Savannah
Page 4 of 28 3/26/2021

Case Narrative
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Job ID: 680-196438-4
Laboratory: Eurofins TestAmerica, Savannah
Narrative
CASE NARRATIVE
Client: Civil & Environmental Consultants Inc
Project: Alcoa - Groundwater & Waste Characteriza
Report Number: 680-196438-4
With the exceptions noted as flags or footnotes, standard analytical protocols were followed in the analysis of the samples and no
problems were encountered or anomalies observed. In addition all laboratory quality control samples were within established control
limits, with any exceptions noted below. Each sample was analyzed to achieve the lowest possible reporting limit within the constraints of
the method. In the event of interference or analytes present at high concentrations, samples may be diluted. For diluted samples, the
reporting limits are adjusted relative to the dilution required.
RECEIPT
The samples were received on 03/18/2021; the samples arrived in good condition, properly preserved and on ice. The temperature of the
coolers at receipt was 1.1 C.
FREE CYANIDE
Samples WSPL-SEEP (680-196438-10), Out005-North Sump (680-196438-11), Out005-South Sump (680-196438-12), Out005-01-2.510
(680-196438-13), Out005-06-2.400 (680-196438-14), Out005-07-2.210 (680-196438-15), Out005-08-2.200 (680-196438-16),
Out005-09-2.100 (680-196438-17), Out005-12-2.000 (680-196438-18), Out005-10-6.100 (680-196438-19) and Out005-11-6.000
(680-196438-20) were analyzed for free cyanide in accordance with 1677. The samples were analyzed on 03/24/2021.
Cyanide, Free failed the recovery criteria low for the MS of sample Out005-North SumpMS (680-196438-11) in batch 180-350778. Cyanide,
Free failed the recovery criteria low for the MSD of sample Out005-North SumpMSD (680-196438-11) in batch 180-350778. Cyanide, Free
exceeded the RPD limit. Sample matrix interference and/or non -homogeneity are suspected because the associated laboratory control
sample (LCS) recovery was within acceptance limits.
Refer to the QC report for details.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
ANIONS BY ION CHROMATOGRAPHY (28 DAY)
Samples WSPL-SEEP (680-196438-10), Out005-North Sump (680-196438-11), Out005-South Sump (680-196438-12), Out005-01-2.510
(680-196438-13), Out005-06-2.400 (680-196438-14), Out005-07-2.210 (680-196438-15), Out005-08-2.200 (680-196438-16),
Out005-09-2.100 (680-196438-17), Out005-12-2.000 (680-196438-18), Out005-10-6.100 (680-196438-19) and Out005-11-6.000
(680-196438-20) were analyzed for Anions by Ion Chromatography (28 Day) in accordance with EPA Method 300.0. The samples were
analyzed on 03/22/2021 and 03/24/2021.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
CYANIDE
Samples WSPL-SEEP (680-196438-10), Out005-North Sump (680-196438-11), Out005-South Sump (680-196438-12), Out005-01-2.510
(680-196438-13), Out005-06-2.400 (680-196438-14), Out005-07-2.210 (680-196438-15), Out005-08-2.200 (680-196438-16),
Out005-09-2.100 (680-196438-17), Out005-12-2.000 (680-196438-18), Out005-10-6.100 (680-196438-19) and Out005-11-6.000
(680-196438-20) were analyzed for cyanide in accordance with D7511-12. The samples were analyzed on 03/23/2021.
Samples Out005-01-2.510 (680-196438-13)[5X] and Out005-12-2.000 (680-196438-18)[5X] required dilution prior to analysis. The
reporting limits have been adjusted accordingly.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Eurofins TestAmerica, Savannah
Page 5 of 28 3/26/2021

Case Narrative
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Job ID: 680-196438-4 (Continued)
Laboratory: Eurofins TestAmerica, Savannah (Continued)
Eurofins TestAmerica, Savannah
Page 6 of 28 3/26/2021

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Client Sample ID: WSPL-SEEP
Date Collected: 03/16/21 14:40
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-10
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 14 1.0 0.40 mg/L 03/22/21 21:37 1
Fluoride 11 0.10 0.040 mg/L 03/22/21 21:37 1
Chloride 1.7 0.50 0.20 mg/L 03/22/21 21:37 1
Bromide <0.20 0.50 0.20 mg/L 03/22/21 21:37 1
General Chemistry
Analyte
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.047 0.0060 0.0020 mg/L
<0.00079 0.0020 0.00079 mg/L
03/23/21 16:37 1
03/24/21 21:48 1
Client Sample ID: Out005-North Sump
Date Collected: 03/16/21 15:48
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-11
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 18 1.0 0.40 mg/L 03/22/21 21:50 1
Fluoride 6.0 0.10 0.040 mg/L 03/22/21 21:50 1
Chloride 2.4 0.50 0.20 mg/L 03/22/21 21:50 1
L Bromide <0.20 0.50 0.20 mg/L 03/22/21 21:50 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.032
<0.00079 F1 F2
0.0060
0.0020
0.0020 mg/L
0.00079 mg/L
03/23/21 16:55 1
03/24/21 21:54 1
Client Sample ID: Out005-South Sump
Date Collected: 03/16/21 16:35
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-12
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 15 1.0 0.40 mg/L 03/22/21 22:53 1
Fluoride 4.3 0.10 0.040 mg/L 03/22/21 22:53 1
Chloride 2.1 0.50 0.20 mg/L 03/22/21 22:53 1
Bromide 0.20 J 0.50 0.20 mg/L 03/22/21 22:53 1
General Chemistry
Analyte
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.070 0.0060
<0.00079 0.0020
Client Sample ID: Out005-01-2.510
Date Collected: 03/16/21 14:00
Date Received: 03/18/21 15:31
0.0020 mg/L
0.00079 mg/L
03/23/21 16:43 1
03/24/21 21:59 1
Lab Sample ID: 680-196438-13
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 7.7 1.0 0.40 mg/L
Fluoride 1.1 0.10 0.040 mg/L
Chloride 0.92 0.50 0.20 mg/L
Bromide <0.20 0.50 0.20 mg/L
03/22/21 23:31 1
03/22/21 23:31 1
03/22/21 23:31 1
03/22/21 23:31 1
Eurofins TestAmerica, Savannah
Page 7 of 28 3/26/2021

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Client Sample ID: Out005-01-2.510
Date Collected: 03/16/21 14:00
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-13
Matrix: Water
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 0
Cyanide, Total 0.046 0.030 0.010 mg/L 03/23/21 16:31 5
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 03/24/21 22:06 1
Client Sample ID: Out005-06-2.400
Date Collected: 03/17/21 09:45
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-14
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 19 1.0 0.40 mg/L 03/22/21 23:44 1
Fluoride 2.3 0.10 0.040 mg/L 03/22/21 23:44 1
Chloride 2.1 0.50 0.20 mg/L 03/22/21 23:44 1
LBromide <0.20 0.50 0.20 mg/L 03/22/21 23:44 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total 0.0057 J 0.0060 0.0020 mg/L 03/23/21 17:19 1
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 03/24/21 22:08 1
Client Sample ID: Out005-07-2.210
Date Collected: 03/17/21 10:00
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-15
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate
Fluoride
Chloride
Bromide
17 1.0 0.40 mg/L 03/24/21 02:23 1
2.6 0.10 0.040 mg/L 03/24/21 02:23 1
1.9 0.50 0.20 mg/L 03/24/21 02:23 1
<0.20 0.50 0.20 mg/L 03/24/21 02:23 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.0050 J
<0.00079
0.0060
0.0020
0.0020 mg/L
0.00079 mg/L
03/23/21 17:01 1
03/24/21 22:09 1
Client Sample ID: Out005-08-2.200
Date Collected: 03/17/21 10:20
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-16
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 18 1.0 0.40 mg/L 03/24/21 02:36 1
Fluoride 2.7 0.10 0.040 mg/L 03/24/21 02:36 1
Chloride 1.9 0.50 0.20 mg/L 03/24/21 02:36 1
Bromide <0.20 0.50 0.20 mg/L 03/24/21 02:36 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.010 0.0060 0.0020 mg/L
<0.00079 0.0020 0.00079 mg/L
03/23/21 16:47 1
03/24/21 22:11 1
6
Eurofins TestAmerica, Savannah
Page 8 of 28 3/26/2021

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Client Sample ID: Out005-09-2.100
Date Collected: 03/17/21 10:45
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-17
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 22 1.0 0.40 mg/L 03/24/21 02:48 1
Fluoride 2.7 0.10 0.040 mg/L 03/24/21 02:48 1
Chloride 2.0 0.50 0.20 mg/L 03/24/21 02:48 1
Bromide <0.20 0.50 0.20 mg/L 03/24/21 02:48 1
General Chemistry
Analyte
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.0092 0.0060 0.0020 mg/L 03/23/21 16:57 1
<0.00079 0.0020 0.00079 mg/L 03/24/21 22:12 1
Client Sample ID: Out005-12-2.000
Date Collected: 03/17/21 11:00
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-18
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 24 1.0 0.40 mg/L 03/24/21 03:01 1
Fluoride 2.6 0.10 0.040 mg/L 03/24/21 03:01 1
Chloride 2.2 0.50 0.20 mg/L 03/24/21 03:01 1
L Bromide <0.20 0.50 0.20 mg/L 03/24/21 03:01 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.046 0.030 0.010 mg/L 03/23/21 16:53 5
<0.00079 0.0020 0.00079 mg/L 03/24/21 22:14 1
Client Sample ID: Out005-10-6.100
Date Collected: 03/17/21 12:20
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-19
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 24 1.0 0.40 mg/L 03/24/21 03:14 1
Fluoride 0.38 0.10 0.040 mg/L 03/24/21 03:14 1
Chloride 3.9 0.50 0.20 mg/L 03/24/21 03:14 1
Bromide <0.20 0.50 0.20 mg/L 03/24/21 03:14 1
General Chemistry
Analyte
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
<0.0020 0.0060 0.0020 mg/L
<0.00079 0.0020 0.00079 mg/L
Client Sample ID: Out005-11-6.000
Date Collected: 03/17/21 12:40
Date Received: 03/18/21 15:31
03/23/21 16:45 1
03/24/21 22:15 1
Lab Sample ID: 680-196438-20
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 24 1.0 0.40 mg/L 03/24/21 03:26 1
Fluoride 0.37 0.10 0.040 mg/L 03/24/21 03:26 1
Chloride 3.9 0.50 0.20 mg/L 03/24/21 03:26 1
Bromide <0.20 0.50 0.20 mg/L 03/24/21 03:26 1
Eurofins TestAmerica, Savannah
Page 9 of 28 3/26/2021

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Client Sample ID: Out005-11-6.000
Date Collected: 03/17/21 12:40
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-20
Matrix: Water
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac 0
Cyanide, Total 0.0027 J 0.0060 0.0020 mg/L 03/23/21 16:33 1
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 03/24/21 22:17 1
6
Eurofins TestAmerica, Savannah
Page 10 of 28 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Lab Sample ID: MB 680-660756/33
Matrix: Water
Analysis Batch: 660756
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate <0.40 1.0 0.40 mg/L 03/22/21 19:18 1
Fluoride <0.040 0.10 0.040 mg/L 03/22/21 19:18 1
Chloride <0.20 0.50 0.20 mg/L 03/22/21 19:18 1
Bromide <0.20 0.50 0.20 mg/L 03/22/21 19:18 1
Lab Sample ID: LCS 680-660756/34
Matrix: Water
Analysis Batch: 660756
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Sulfate 10.0 9.75 mg/L 98 90 - 110
Fluoride 2.00 2.04 mg/L 102 90 - 110
Chloride 10.0 10.0 mg/L 100 90 - 110
Bromide 10.0 9.89 mg/L 99 90. 110
Lab Sample ID: LCSD 680-660756/35
Matrix: Water
Analysis Batch: 660756
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 10.0 9.75 mg/L 98 90 _ 110 0 15
Fluoride 2.00 2.05 mg/L 102 90 _ 110 0 15
Chloride 10.0 10.0 mg/L 100 90 _ 110 0 15
Bromide 10.0 9.87 mg/L 99 90 _ 110 0 15
Lab Sample ID: 680-196438-12 MS
Matrix: Water
Analysis Batch: 660756
Analyte
Client Sample ID: Out005-South Sump
Prep Type: Total/NA
Sample Sample Spike MS MS %Rec.
Result Qualifier Added Result Qualifier Unit D %Rec Limits
Sulfate 15 10.0 25.2 mg/L 101 80 _ 120
Fluoride 4.3 2.00 6.24 mg/L 97 80 _ 120
Chloride 2.1 10.0 12.4 mg/L 103 80 _ 120
Bromide 0.20 J 10.0 10.2 mg/L 102 80 - 120
Lab Sample ID: 680-196438-12 MSD
Matrix: Water
Analysis Batch: 660756
Client Sample ID: Out005-South Sump
Prep Type: Total/NA
Sample Sample Spike MSD MSD %Rec. RPD
Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 15 10.0 24.9 mg/L 99 80 - 120 1 15
Fluoride 4.3 2.00 6.20 mg/L 94 80. 120 1 15
Chloride 2.1 10.0 12.1 mg/L 101 80. 120 2 15
Bromide 0.20 J 10.0 9.93 mg/L 99 80 _ 120 2 15
Lab Sample ID: MB 680-660929/33
Matrix: Water
Analysis Batch: 660929
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate <0.40 1.0 0.40 mg/L 03/23/21 21:57 1
Eurofins TestAmerica, Savannah
Page 11 of 28 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography (Continued)
Lab Sample ID: MB 680-660929/33
Matrix: Water
Analysis Batch: 660929
MB MB
Analyte Result Qualifier RL MDL Unit
Fluoride <0.040 0.10 0.040 mg/L
Chloride <0.20 0.50 0.20 mg/L
Bromide <0.20 0.50 0.20 mg/L
Lab Sample ID: LCS 680-660929/34
Matrix: Water
Analysis Batch: 660929
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
D Prepared
Analyzed Dil Fac
03/23/21 21:57 1
03/23/21 21:57 1
03/23/21 21:57 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Sulfate 10.0 9.61 mg/L 96 90 _ 110
Fluoride 2.00 2.03 mg/L 102 90 _ 110
Chloride 10.0 9.99 mg/L 100 90 _ 110
Bromide 10.0 9.84 mg/L 98 90 _ 110
Lab Sample ID: LCSD 680-660929/35
Matrix: Water
Analysis Batch: 660929
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 10.0 9.63 mg/L 96 90 - 110 0 15
Fluoride 2.00 2.03 mg/L 102 90 - 110 0 15
Chloride 10.0 9.99 mg/L 100 90 - 110 0 15
Bromide 10.0 9.83 mg/L 98 90 - 110 0 15
Method: D7511-12 - Total Cyanide
Lab Sample ID: MB 410-107202/17
Matrix: Water
Analysis Batch: 107202
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020 0.0060 0.0020 mg/L 03/23/21 16:07 1
Lab Sample ID: MB 410-107202/47
Matrix: Water
Analysis Batch: 107202
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020 0.0060 0.0020 mg/L 03/23/21 17:07 1
Lab Sample ID: LCS 410-107202/16
Matrix: Water
Analysis Batch: 107202
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Total
0.0400 0.0381 mg/L 95 84 _ 116
Eurofins TestAmerica, Savannah
Page 12 of 28 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Method: D7511-12 - Total Cyanide (Continued)
pLab Sample ID: LCS 410-107202/46
Matrix: Water
Analysis Batch: 107202
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Total
pLab Sample ID: 680-196438-10 MS
Matrix: Water
Analysis Batch: 107202
Analyte
0.0300 0.0307 mg/L 102 84. 116
Client Sample ID: WSPL-SEEP
Prep Type: Total/NA a
Sample Sample Spike MS MS %Rec.
Result Qualifier Added Result Qualifier Unit D %Rec Limits
Cyanide, Total 0.047
Lab Sample ID: 680-196438-10 DU
Matrix: Water
Analysis Batch: 107202
Analyte
0.0200 0.0653 mg/L 92 84 _ 116
Client Sample ID: WSPL-SEEP
Prep Type: Total/NA
Sample Sample DU DU RPD
Result Qualifier Result Qualifier Unit D RPD Limit
Cyanide, Total 0.047 0.0469 mg/L 0 20
Method: OIA-1677 - Cyanide, Free (Flow Injection)
Lab Sample ID: MB 180-350778/21
Matrix: Water
Analysis Batch: 350778
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
LAnalyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 03/24/21 21:26 1
[Lab Sample ID: MB 180-350778/39
Matrix: Water
Analysis Batch: 350778
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 03/24/21 21:53 1
Lab Sample ID: LCS 180-350778/20
Matrix: Water
Analysis Batch: 350778
Analyte
Cyanide, Free
Lab Sample ID: LCS 180-350778/38
Matrix: Water
Analysis Batch: 350778
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
0.0500 0.0528 mg/L 106 82 - 132
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Free
0.0500 0.0608 mg/L 122 82. 132
Eurofins TestAmerica, Savannah
Page 13 of 28 3/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
Method: OIA-1677 - Cyanide, Free (Flow Injection) (Continued)
rLab Sample ID: 680-196438-11 MS
Matrix: Water
Analysis Batch: 350778
Client Sample ID: Out005-North Sump
Prep Type: Total/NA
Sample Sample Spike MS MS %Rec.
Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits
Cyanide, Free <0.00079 F1 F2 0.0500 0.00360 F1 mg/L 7 82 _ 130
rLab Sample ID: 680-196438-11 MSD
Matrix: Water
Analysis Batch: 350778
Analyte
Client Sample ID: Out005-North Sump
Prep Type: Total/NA a
Sample Sample Spike MSD MSD %Rec. RPD
Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit
Cyanide, Free <0.00079 F1 F2
0.0500 0.00432 F1 F2 mg/L 9 82 _130 18 11
Eurofins TestAmerica, Savannah
Page 14 of 28 3/26/2021

Client: Civil & Environmental Consultants Inc
QC Association Summary
Job ID: 680-196438-4
HPLC/IC
Analysis Batch: 660756
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-196438-10
680-196438-11
680-196438-12
680-196438-13
680-196438-14
MB 680-660756/33
LCS 680-660756/34
LCSD 680-660756/35
680-196438-12 MS
680-196438-12 MSD
Analysis Batch: 660929
Lab Sample ID
680-196438-15
680-196438-16
680-196438-17
680-196438-18
680-196438-19
680-196438-20
MB 680-660929/33
LCS 680-660929/34
LCSD 680-660929/35
WSPL-SEEP
Out005-North Sump
Out005-South Sump
Out005-01-2.510
Out005-06-2.400
Method Blank
Lab Control Sample
Lab Control Sample Dup
Out005-South Sump
Out005-South Sump
Client Sample ID
out005-07-2.210
Out005-08-2.200
Out005-09-2.100
Out005-12-2.000
Out005-10-6.100
Out005-11-6.000
Method Blank
Lab Control Sample
Lab Control Sample Dup
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Prep Type
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Matrix
Water
Water
Water
Water
Water
Water
Water
Water
Water
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
Method
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
8
Prep Batch 1
1
General Chemistry
Analysis Batch: 107202
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-196438-10
680-196438-11
680-196438-12
680-196438-13
680-196438-14
680-196438-15
680-196438-16
680-196438-17
680-196438-18
680-196438-19
680-196438-20
MB 410-107202/17
MB 410-107202/47
LCS 410-107202/16
LCS 410-107202/46
680-196438-10 MS
680-196438-10 DU
Analysis Batch: 350778
Lab Sample ID
WSPL-SEEP
Out005-North Sump
Out005-South Sump
Out005-01-2.510
Out005-06-2.400
Out005-07-2.210
Out005-08-2.200
Out005-09-2.100
Out005-12-2.000
Out005-10-6.100
Out005-11-6.000
Method Blank
Method Blank
Lab Control Sample
Lab Control Sample
WSPL-SEEP
WSPL-SEEP
Client Sample ID
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Prep Type
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Water
Matrix
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
Method
Prep Batch
680-196438-10
680-196438-11
680-196438-12
680-196438-13
680-196438-14
WSPL-SEEP
Out005-North Sump
Out005-South Sump
Out005-01-2.510
Out005-06-2.400
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Water
Water
Water
Water
Water
OIA-1677
OIA-1677
OIA-1677
OIA-1677
OIA-1677
Eurofins TestAmerica, Savannah
Page 15 of 28 3/26/2021

QC Association Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-196438-4
General Chemistry (Continued)
Analysis Batch: 350778 (Continued)
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
680-196438-15 Out005-07-2.210 Total/NA Water OIA-1677
680-196438-16 Out005-08-2.200 Total/NA Water OIA-1677
680-196438-17 Out005-09-2.100 Total/NA Water OIA-1677
680-196438-18 Out005-12-2.000 Total/NA Water OIA-1677
680-196438-19 Out005-10-6.100 Total/NA Water OIA-1677
680-196438-20 Out005-11-6.000 Total/NA Water OIA-1677
MB 180-350778/21 Method Blank Total/NA Water OIA-1677
MB 180-350778/39 Method Blank Total/NA Water OIA-1677
LCS 180-350778/20 Lab Control Sample Total/NA Water OIA-1677
LCS 180-350778/38 Lab Control Sample Total/NA Water OIA-1677
680-196438-11 MS Out005-North Sump Total/NA Water OIA-1677
680-196438-11 MSD Out005-North Sump Total/NA Water OIA-1677
Eurofins TestAmerica, Savannah
Page 16 of 28 3/26/2021

Lab Chronicle
Client Sample ID: WSPL-SEEP
Date Collected: 03/16/21 14:40
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-10
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660756 03/22/21 21:37 UI TAL SAV
Instrument ID: CICK
Analysis D7511-12 1 107202 03/23/21 16:37 UJE2 ELLE
Instrument ID: 19369
Analysis OIA-1677 1 350778 03/24/21 21:48 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-North Sump
Date Collected: 03/16/21 15:48
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-11
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660756 03/22/21 21:50 Ul TAL SAV
Instrument ID: CICK
Analysis D7511-12 1 107202 03/23/21 16:55 UJE2 ELLE
Instrument ID: 19369
Analysis OIA-1677 1 350778 03/24/21 21:54 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-South Sump
Date Collected: 03/16/21 16:35
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-12
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660756 03/22/21 22:53 Ul TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 1 107202 03/23/21 16:43 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 21:59 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-01-2.510
Date Collected: 03/16/21 14:00
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-13
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660756 03/22/21 23:31 UI TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 5 107202 03/23/21 16:31 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 22:06 GRB TAL PIT
Instrument ID: ALPKEM3
Eurofins TestAmerica, Savannah
Page 17 of 28 3/26/2021

Lab Chronicle
Client Sample ID: Out005-06-2.400
Date Collected: 03/17/21 09:45
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-14
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660756 03/22/21 23:44 UI TAL SAV
Instrument ID: CICK
Analysis D7511-12 1 107202 03/23/21 17:19 UJE2 ELLE
Instrument ID: 19369
Analysis OIA-1677 1 350778 03/24/21 22:08 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-07-2.210
Date Collected: 03/17/21 10:00
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-15
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660929 03/24/21 02:23 T1C TAL SAV
Instrument ID: CICK
Analysis D7511-12 1 107202 03/23/21 17:01 UJE2 ELLE
Instrument ID: 19369
Analysis OIA-1677 1 350778 03/24/21 22:09 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-08-2.200
Date Collected: 03/17/21 10:20
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-16
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660929 03/24/21 02:36 T1C TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 1 107202 03/23/21 16:47 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 22:11 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-09-2.100
Date Collected: 03/17/21 10:45
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-17
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660929 03/24/21 02:48 T1C TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 1 107202 03/23/21 16:57 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 22:12 GRB TAL PIT
Instrument ID: ALPKEM3
Eurofins TestAmerica, Savannah
Page 18 of 28 3/26/2021

Lab Chronicle
Client Sample ID: Out005-12-2.000
Date Collected: 03/17/21 11:00
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-18
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660929 03/24/21 03:01 TIC TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 5 107202 03/23/21 16:53 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 22:14 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-10-6.100
Date Collected: 03/17/21 12:20
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-19
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660929 03/24/21 03:14 T1C TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 1 107202 03/23/21 16:45 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 22:15 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-11-6.000
Date Collected: 03/17/21 12:40
Date Received: 03/18/21 15:31
Lab Sample ID: 680-196438-20
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 660929 03/24/21 03:26 T1C TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 1 107202 03/23/21 16:33 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 350778 03/24/21 22:17 GRB TAL PIT
Instrument ID: ALPKEM3
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Env, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
TAL SAV = Eurofins TestAmerica, Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins TestAmerica, Savannah
Page 19 of 28 3/26/2021

c
�
c
W
H
W
0
N
•r
0)
N
r
r
Chain of Custody Record
0
Ln
Csi
5102 LaRoche Avenue
to
V
CT
o N
2
U O
0
Page
Page 1 ofa
Preservation Codes:
A - HCL M - Hexane
B -NaOH N - None
C - Zn Acetate 0 - AsNa02
D - Nitnc Aod P - Na2O4S
E - NaHSO4 0 - Na2S03
F - Me0H R - Na2S2O3
G - Amchlor S - H2SO4
H - Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J - DI Water V - MCAA
K - EDTA W • pH 4-5
L - EDA Z - other (specify)
Other:
;?:\
Z
c
o
R
A.
i
Sample Disposal (A fee may be assessed if samples are retained longer than 1 month)
Return To Client Disposal By Lab Archive For Months
Special Instructions/CC Requirements
'Empty Kit Relinquished by. IDate ITlme 'Method of Shipment
a
*til
A
Coder Temperature(s)°C and Other Remarks 1 'n ' f •c
—
Apo
sn3
ao
wey3
8CP961-089
T
„z-is
7
1
-V7
VU
'
Lamer Tracking kicks)
a
Analysis Requested
tisuImuoa ►o .mgwnN Iu of
r
o
Q
(MaSM/WhL%d014c tyro),
x
&Q10/
1d��o�ob
y
Received y 13) rt
hrob
X
�2 n L. &faO
kX
.>>
X
7L,7*-
Lab PM
Hoffman, Sheila B
E-Mail
Sheila Hoffman@Eurofinset com
1111-7v ''° " r.%1-Q� 1 i 5 L. 0
X,
x.,
)(
)1.,
�C
)4-
X
�'-)'11Q 1.3 1 }'-e-L O IQQ i
i�,
x'
?(?'--
7�
X
�l.
�Y/.,
/(
x
�(
ssi.• aor9z
9.009 •8OIz9
Z
'
•aea0 V Ilo • arm
y
��!1.
WnupWnIV' VMO L'OOz
X
■IuoW W V- O-¢HN009WdS
7
�,(� 4/04191)
o
U
Company
§.
0
U
Custody Seals Intact: 'Custody Seal No
n Yes A No
(oN Jo SIA) wdwsg Pvgu Plsld
Possible Hazard Identification `
I Non -Hazard I 1 Flammable Skin Irritant I Poison B I Unknown Radiological
Deliverable Requested' I, II, III, IV, Other (specify)
Due Date Requested:
TAT Requested (days):
[Compliance Project: T Yes t No
PO — I
Purchase Order Requested
Project
#
68025248
Matrixte (w-war.
s•.oia.
o•wa.riou
Y.
eT•T•ue, A•AH)
0
Water
i/ /
Sampler Ali .
OA�
0
v�
O
a
a a o A
E aY
h~��
o
CAS
0
0
a
Company
Civil & Environmental Consultants Inc
3
y
M
_
1%
C4
Ci
Ch
�_
i4'-•
c't�
Ch
v
Cc)
c
S"
Client Information•
Client Contact
Matt Ginther
Address
3701 Arco Corporate Drive Suite 400
City
Charlotte
Stale. Zip
NC, 28273
Email
[e-mail]
Protect Name
boo-a(g.00l3
Sample Identification
Out005-13-2.050
oo0
aa
9
0,—,0
4
ciD
a
'3
Q
,
t%L
Relinquished by / { /, -
Page 20 of 28
3/26/2021

Charlotte 229
Chain of Custody Record
COC No
680-123943-46437.1
Page
Page of 2
Da
Preservation Codes:
A - I-ICL M Hexane
B -NaOH N - None
C Zn Acetate 0 - AsNa02
D - Ndnc Acid P - Na204S
E - NaHSO4 Q - Na2S03
F - Me0H R - Na2S203
G • Amchlor S • H2SO4
H • Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J DI Water V - MCAA
K -EDTA W-pH4-5
L - EDA Z - otter (specify)
Other
�
zs
VfU'
u)
I
Sample Disposal (A fee may b9 assessed if samples are retained longer than 1 month)
Return To Client Disposal By Lab Archive For Months
Special Instructions/QC Requirements
..r
I
TICompany
Custody Seals Intact 'Custody Seal No Cooer Temperatures) `C and Other Remarks \ `�
AYes ANo 11 li
r
Career Tracking No(s)
State of Ongin
Analysis Requested
sJeulquoo jo JiQwnN IRol
;
yII1
l
I
—
III
(nlikv)Nv viv l;"^t/ 4L9 l 4Y-1-0
'Empty Kit Relinquished by (Date ITlme (Method of
$
•,
'' `
ill
Company ./`_„T
L f
111115
k) %-,w- u c)z. c
>,
III
4(r4 LA Q•QQc
k
AI
—
Lab PM
(Hoffman, Sheila B
CB
w
? L
w �
Auuawual-.«oo
z
ue-as
m
oPW�06
opi
m
U
aen-dr3T-vON
z
111111111111
(ON JO $.A) OSW/SW 1d
c
E_
(ON JO SOA) sldweS P.'.w PIMA
Preservation Code:
Possible Hazard Identification
Non -Hazard I I Flammable Skin lrrrtant 1 Poison 8 U Unknown I I Radiological
Deliverable Requested I, II, III. IV, Other (specify)
Due Date Requested:
TAT Requested (days):
(Compliance Project: ' Yes A No
PO#
Purchase Order Requested
Project #
68025248
Matrix
(W-water,
s•.aa.
o•wswra.
BT•T Sue. MAtr)
_
da
60
QI
a n c �
rn~UC7
Company
Civil & Environmental Consultants Inc
to H`
'
`
•
+EIRE
Sample Date
r
III
Address
2704 Cherokee Farm Way Suite 101
City
Knoxville
State. Zip.
TN, 37920
s
( Email
[e-mail]
Project Name
300-226.0013
��
d
d
cn
Sample Identification
;
O
mo
.
it
•
(
•o
1
lbab0°
Ct
1�
1
ow
.
1
cp
1
c)
ik
I
Z
°NI
Client Information
Client Contact
Michael Worden
-1
.'
•
71
Y
=
Page 21 of 28
3/26/2021

0
QJ
Chain of Custody Record
COC No j
680-647348 1
N
& al
N
a' d
!Job a
680-196438-1
Preservation Codes:
A - HCL M - Hexane
B - NaOH N - None
C - Zn Acetate 0 - AsNaO2
D - Nitric Acid P - Na2O4S
E - NaHSO4 0 - Na2S03
F -MeOH R-Na2S203
G • Amchlor S - H2SO4
H • Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J • DI Water V - MCAA
K • EDTA W - pH 4.5
L - EDA Z • other (specuh.
Other:
Special Instructions/Note:
Note Since laboratory accreddahons are subject to change. Eurofins TestAmenca places the ownership of method analyle 8 accreditation compliance upon out subcontract laboratories This sample shipment is forwarded under chain -of -custody If the laboratory does not currently
maintain accreditation in the State of Origin listed above for analysis/tests/matrix being analyzed. the samples must be shipped back to the Eurofins TestAmenca laboratory or other instructions wdl be provided Any changes to accreditation status should be brought to Eurofins
TestAmenca attention immediately If alt requested accreditation are current to date. return the signed Chain of Custody attesting to said comphcance to Eurofins TestAmenca
Sample Disposal ( A fee may be assessed if samples are retained longer than 1 month)
Return To Client 0 Disposal By Lab Archive For Mon.
Special Instructions/QC Requirements
'Empty Kit Relinquished by. IDate. ITlme 'Method of Shipment
E
E
0
U
E
E
0
U
n
E
0
U
Cooler Temperalurels) °C and Other Remarks
v
E
o
t
m
O
%m
m
o
Career Tracking NO(S)
Stale of Ong°
North Carolina
Accreditations Required (See note)
State - North Carolina (WW/SW)
Analysis Requested
wewquoa;o JeqwnN L5 of
Received by
a
m
d
d
CC
Received by 1
Lab PM
Hoffman. Sheila B
E-Mail
Sheila Hoffman@Eurofinset com
dno-pasolo suai .A suad'Apimepu61 mow
X
(ON Jo SSA) OSW/SW uuoYedx
n
0
0
o
0
U
T
u
0
0
(Custody Seal No
(ON Jo SSA) eldw,S pueUld PIMA
Possible Hazard Identification
Unconfirmed
Deliverable Requested 1, 11. III, IV. Other (specify) Primary Deliverable Rank 2
Company
Eurofins Lancaster Laboratories Env LLC
TAT Requested (days):
6rotect u
68025248
?Lc si_ a 2 3
a; y T• _
0
m
LPreservation Code:
4.53
u0
3
Z.ogm
E ]4.. u o
co F- u u
h V0
m
22mE.'D
0
m
CtQ
0
m
0
c
ia ?
la E
o r
a
M v
" a
o
w
w
v
m
K N
y
O N
N
aO
U
w
Sample Date
N
(O
zM
Client Information (Sub Contract Lab)
Client Contact
Shipping/Receiving
Address
2425 New Holland Pike. .
03
l0
u
U J
Slate Zup
PA, 17601
Phone
717-656-2300(Tel)
W
Project Name
Alcoa - Groundwater 8 Waste Characterize
m
CO
Sample Identification - Client ID (Lab ID)
ABF-WC001-F006 (680-196438-9)
Relinquished by
Relinquished by
Relinquished by
Custody Seals Intact.
A Yes n No
1I/01/2020
Page 22 of 28
3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-4
Login Number: 196438
List Number: 1
Creator: Daughtry, Beth A
Question
List Source: Eurofins TestAmerica, Savannah
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. True
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins TestAmerica, Savannah
Page 23 of 28 3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-4
Login Number: 196438
List Number: 2
Creator: Phillips, Ann -Marie E
Question
List Source: Eurofins Lancaster Laboratories Env
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal is intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable (</=6C, not frozen). True
Cooler Temperature is recorded. True
WV: Container Temperature is acceptable (</=6C, not frozen). N/A
WV: Container Temperature is recorded. N/A
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
There is sufficient vol. for all requested analyses. True
Multiphasic samples are not present. True
Samples do not require splitting or compositing. N/A
Is the Field Sampler's name present on COC? True
Sample Preservation Verified. N/A
Residual Chlorine Checked. N/A
Sample custody seals are intact. N/A
Eurofins TestAmerica, Savannah
Page 24 of 28 3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-4
Login Number: 196438
List Number: 4
Creator: Miller, Wesley R
Question
List Source: Eurofins Lancaster Laboratories Env
List Creation: 03/20/21 03:04 PM
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal is intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable (</=6C, not frozen). True
Cooler Temperature is recorded. True
WV: Container Temperature is acceptable (</=6C, not frozen). N/A
WV: Container Temperature is recorded. N/A
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
There is sufficient vol. for all requested analyses. True
Multiphasic samples are not present. True
Samples do not require splitting or compositing. N/A
Is the Field Sampler's name present on COC? False
Sample Preservation Verified. N/A
Residual Chlorine Checked. N/A
Sample custody seals are intact. N/A
Received project as a subcontract.
Eurofins TestAmerica, Savannah
Page 25 of 28 3/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-196438-4
Login Number: 196438
List Number: 3
Creator: Kovitch, Christina M
Question
List Source: Eurofins TestAmerica, Pittsburgh
List Creation: 03/18/21 07:31 PM
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. True
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins TestAmerica, Savannah
Page 26 of 28 3/26/2021

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Job ID: 680-196438-4
Laboratory: Eurofins TestAmerica, Savannah
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 269 12-31-21
Laboratory: Eurofins Lancaster Laboratories Env, LLC
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority Program Identification Number Expiration Date
A2LA Dept. of Defense ELAP 1.01 11-30-22
Alaska State PA00009 06-30-21
Alaska (UST) State 17-027 01-31-21 *
Arizona State AZ0780 03-12-22
Arkansas DEQ State 19-053-0 08-09-21
California State 2792 01-31-22
Colorado State PA00009 06-30-21
Connecticut State PH-0746 06-30-21
DE Haz. Subst. Cleanup Act (HSCA) State 019-006 (PA cert) 01-31-22
Delaware (DW) State N/A 02-01-22
Florida NELAP E87997 07-01-21
Hawaii State N/A 01-31-22
Illinois NELAP 004559 01-31-22
Iowa State 361 03-02-22
Kansas NELAP E-10151 10-31-21
Kentucky (DW) State KY90088 01-01-22
Kentucky (UST) State 1.01 11-30-22
Kentucky (WW) State KY90088 12-31-21
Louisiana NELAP 02055 06-30-21
Maine State 2019012 03-12-22
Maryland State 100 06-30-21
Massachusetts State M-PA009 06-30-21
Michigan State 9930 01-31-22
Minnesota NELAP 042-999-487 12-31-21
Missouri State 450 01-31-22
Montana (DW) State 0098 01-01-22
Montana (UST) State 0098 01-01-22
Nebraska State NE-OS-32-17 01-31-20 *
Nevada State PA000092019-3 07-31-21
New Hampshire NELAP 273019 01-10-22
New Jersey NELAP PA011 06-30-21
New York NELAP 10670 04-01-21
North Carolina (DW) State 42705 07-31-21
North Carolina (WW/SW) State 521 12-31-21
North Dakota State R-205 01-31-22
Oklahoma NELAP R-205 08-31-21
Oregon NELAP PA200001-018 09-12-21
PALA Canada 1978 05-08-21
Pennsylvania NELAP 36-00037 01-31-22
Rhode Island State LA000338 01-31-22
South Carolina State 89002002 01-31-22
Tennessee State 02838 01-31-22
Texas NELAP T104704194-20-38 08-31-21
Utah NELAP PA000092019-16 03-01-22
Vermont State VT - 36037 10-29-21
* Accreditation/Certification renewal pending - accreditation/certification considered valid.
Eurofins TestAmerica, Savannah
Page 27 of 28 3/26/2021

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Job ID: 680-196438-4
Laboratory: Eurofins Lancaster Laboratories Env, LLC (Continued)
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority Program Identification Number Expiration Date
Virginia NELAP 10561 06-14-21
Washington State C457 04-11-21
West Virginia (DW) State 9906 C 12-31-21
West Virginia DEP State 055 06-30-21
Wyoming State 8TMS-L 01-31-22
Wyoming (UST) A2LA 1.01 11-30-22
Laboratory: Eurofins TestAmerica, Pittsburgh
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 434 12-31-21
Eurofins TestAmerica, Savannah
Page 28 of 28 3/26/2021

Draft — Hydrogeological Conceptual Site Model Update — Badin Business Park
680-197627-1; BBP Temporary Wells
EHS Support LLC

Review your project
results through
�TotaAccesss
Visit us at:
wwweurofinsus.comfEnv
titieurofins
Environment Testing
America
ANALYTICAL REPORT
Eurofins TestAmerica, Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Tel: [phone]
Laboratory Job ID: 680-197627-1
Client Project/Site: BBP Temporary Wells
r:
Civil & Environmental Consultants Inc
2704 Cherokee Farm Way
Suite 101
Knoxville, Tennessee 37920
Attn: Michael Worden
Authorized for release by:
4/26/2021 3:21:42 PM
Sheila Hoffman, Project Manager II
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for
accredited parameters, exceptions are noted in this report. This report may not be reproduced
except in full, and with written approval from the laboratory. For questions please contact the
Project Manager at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Method Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Method Method Description Protocol Laboratory
300.0-1993 R2.1 Anions, Ion Chromatography MCAWW TAL SAV
D7511-12 Total Cyanide ASTM ELLE
OIA-1677 Cyanide, Free (Flow Injection) 01 CORP TAL PIT
Protocol References:
ASTM = ASTM International
MCAWW = "Methods For Chemical Analysis Of Water And Wastes", EPA-600/4-79-020, March 1983 And Subsequent Revisions.
01 CORP = 01 Corporation Instrument Manual.
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Env, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
TAL SAV = Eurofins TestAmerica, Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins TestAmerica, Savannah
Page 2 of 23 4/26/2021

Sample Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Lab Sample ID Client Sample ID Matrix Collected Received Asset ID
680-197627-1 0ut005-TW001 Water 04/13/21 09:50 04/14/21 10:30
680-197627-2 0ut005-TW002 Water 04/13/21 10:35 04/14/21 10:30
680-197627-3 0ut005-TW003 Water 04/13/21 11:15 04/14/21 10:30
680-197627-4 0ut005-TW004 Water 04/13/21 12:00 04/14/21 10:30
680-197627-5 0ut005-TW005 Water 04/13/21 12:40 04/14/21 10:30
Eurofins TestAmerica, Savannah
Page 3 of 23 4/26/2021

Definitions/Glossary
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Qualifiers
HPLC/IC
Qualifier
Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins TestAmerica, Savannah
Page 4 of 23 4/26/2021

Case Narrative
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Job ID: 680-197627-1
Laboratory: Eurofins TestAmerica, Savannah
Narrative
CASE NARRATIVE
Client: Civil & Environmental Consultants Inc
Project: BBP Temporary Wells
Report Number: 680-197627-1
With the exceptions noted as flags or footnotes, standard analytical protocols were followed in the analysis of the samples and no
problems were encountered or anomalies observed. In addition all laboratory quality control samples were within established control
limits, with any exceptions noted below. Each sample was analyzed to achieve the lowest possible reporting limit within the constraints of
the method. In the event of interference or analytes present at high concentrations, samples may be diluted. For diluted samples, the
reporting limits are adjusted relative to the dilution required.
RECEIPT
The samples were received on 04/14/2021; the samples arrived in good condition, properly preserved and on ice. The temperature of the
coolers at receipt was 3.0 C.
FREE CYANIDE
Samples Out005-TW001 (680-197627-1), Out005-TW002 (680-197627-2), Out005-TW003 (680-197627-3), Out005-TW004
(680-197627-4) and Out005-TW005 (680-197627-5) were analyzed for free cyanide in accordance with 1677. The samples were analyzed
on 04/16/2021.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
ANIONS BY ION CHROMATOGRAPHY (28 DAY)
Samples Out005-TW001 (680-197627-1), Out005-TW002 (680-197627-2), Out005-TW003 (680-197627-3), Out005-TW004
(680-197627-4) and Out005-TW005 (680-197627-5) were analyzed for Anions by Ion Chromatography (28 Day) in accordance with EPA
Method 300.0. The samples were analyzed on 04/22/2021 and 04/23/2021.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
CYANIDE
Samples Out005-TW001 (680-197627-1), Out005-TW002 (680-197627-2), Out005-TW003 (680-197627-3), Out005-TW004
(680-197627-4) and Out005-TW005 (680-197627-5) were analyzed for cyanide in accordance with D7511-12. The samples were analyzed
on 04/19/2021.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Eurofins TestAmerica, Savannah
Page 5 of 23 4/26/2021

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Client Sample ID: Out005-TW001
Date Collected: 04/13/21 09:50
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-1
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 27 1.0 0.40 mg/L
Fluoride 3.4 0.10 0.040 mg/L
Chloride 3.2 0.50 0.20 mg/L
Bromide 0.20 J 0.50 0.20 mg/L
04/23/21 18:59 1
04/23/21 18:59 1
04/22/21 18:50 1
04/22/21 18:50 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.057 0.0060 0.0020 mg/L
<0.00079 0.0020 0.00079 mg/L
04/19/21 12:47 1
04/16/21 20:10 1
Client Sample ID: Out005-TW002
Date Collected: 04/13/21 10:35
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-2
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 31 1.0 0.40 mg/L 04/23/21 19:11 1
Fluoride 5.5 0.10 0.040 mg/L 04/23/21 19:11 1
Chloride 3.3 0.50 0.20 mg/L 04/22/21 19:03 1
LBromide 0.22 J 0.50 0.20 mg/L 04/22/21 19:03 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.088 0.0060 0.0020 mg/L
<0.00079 0.0020 0.00079 mg/L
04/19/21 12:57 1
04/16/21 20:12 1
Client Sample ID: Out005-TW003
Date Collected: 04/13/21 11:15
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-3
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 27 1.0 0.40 mg/L 04/23/21 19:24 1
Fluoride 4.8 0.10 0.040 mg/L 04/23/21 19:24 1
Chloride 3.4 0.50 0.20 mg/L 04/22/21 19:15 1
Bromide 0.21 J 0.50 0.20 mg/L 04/22/21 19:15 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.076 0.0060 0.0020 mg/L
<0.00079 0.0020 0.00079 mg/L
04/19/21 12:55 1
04/16/21 20:13 1
Client Sample ID: Out005-TW004
Date Collected: 04/13/21 12:00
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-4
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 27 1.0 0.40 mg/L
Fluoride 6.8 0.10 0.040 mg/L
Chloride 3.4 0.50 0.20 mg/L
Bromide 0.22 J 0.50 0.20 mg/L
04/23/21 20:27 1
04/23/21 20:27 1
04/22/21 19:28 1
04/22/21 19:28 1
Eurofins TestAmerica, Savannah
Page 6 of 23 4/26/2021

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Client Sample ID: Out005-TW004
Date Collected: 04/13/21 12:00
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-4
Matrix: Water
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
0.092 0.0060
<0.00079 0.0020
0.0020 mg/L
0.00079 mg/L
04/19/21 12:27 1
04/16/21 20:28 1
Client Sample ID: Out005-TW005
Date Collected: 04/13/21 12:40
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-5
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate 25 1.0 0.40 mg/L
Fluoride 1.2 0.10 0.040 mg/L
Chloride 3.1 0.50 0.20 mg/L
Bromide <0.20 0.50 0.20 mg/L
General Chemistry
Analyte
Result Qualifier
04/23/21 21:05 1
04/23/21 21:05 1
04/22/21 19:41 1
04/22/21 19:41 1
RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total
Cyanide, Free
<0.0020 0.0060 0.0020 mg/L 04/19/21 12:29 1
<0.00079 0.0020 0.00079 mg/L 04/16/21 20:30 1
Eurofins TestAmerica, Savannah
Page 7 of 23 4/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Lab Sample ID: MB 680-665346/2
Matrix: Water
Analysis Batch: 665346
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Chloride <0.20 0.50 0.20 mg/L 04/22/21 12:48 1
Bromide <0.20 0.50 0.20 mg/L 04/22/21 12:48 1
Lab Sample ID: LCS 680-665346/3
Matrix: Water
Analysis Batch: 665346
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Chloride 10.0 10.1 mg/L
Bromide 10.0 10.0 mg/L
Lab Sample ID: LCSD 680-665346/4
Matrix: Water
Analysis Batch: 665346
Analyte
101 90-110
100 90-110
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
Chloride
Bromide
Lab Sample ID: MB 680-665554/2
Matrix: Water
Analysis Batch: 665554
Analyte
10.0 10.1 mg/L 101 90-110 0 15
10.0 10.0 mg/L 100 90-110 0 15
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate <0.40 1.0 0.40 mg/L
Fluoride <0.040 0.10 0.040 mg/L
Chloride <0.20 0.50 0.20 mg/L
Bromide <0.20 0.50 0.20 mg/L
Lab Sample ID: LCS 680-665554/3
Matrix: Water
Analysis Batch: 665554
Analyte
04/23/21 12:26 1
04/23/21 12:26 1
04/23/21 12:26 1
04/23/21 12:26 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Sulfate 10.0 9.76 mg/L 98 90_ 110
Fluoride 2.00 1.84 mg/L 92 90_ 110
Chloride 10.0 10.1 mg/L 101 90 _ 110
Bromide 10.0 9.99 mg/L 100 90_ 110
Lab Sample ID: LCSD 680-665554/4
Matrix: Water
Analysis Batch: 665554
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 10.0 9.97 mg/L 100 90 - 110 2 15
Fluoride 2.00 1.88 mg/L 94 90 - 110 2 15
Chloride 10.0 10.1 mg/L 101 90-110 0 15
Bromide 10.0 9.98 mg/L 100 90 - 110 0 15
Eurofins TestAmerica, Savannah
Page 8 of 23 4/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography (Continued)
Lab Sample ID: MB 680-665555/33
Matrix: Water
Analysis Batch: 665555
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Sulfate <0.40 1.0 0.40 mg/L 04/23/21 19:49 1
Fluoride <0.040 0.10 0.040 mg/L 04/23/21 19:49 1
Chloride <0.20 0.50 0.20 mg/L 04/23/21 19:49 1
Bromide <0.20 0.50 0.20 mg/L 04/23/21 19:49 1
Lab Sample ID: LCS 680-665555/34
Matrix: Water
Analysis Batch: 665555
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Sulfate 10.0 9.71 mg/L 97 90 - 110
Fluoride 2.00 1.96 mg/L 98 90 - 110
Chloride 10.0 10.0 mg/L 100 90 - 110
Bromide 10.0 9.96 mg/L 100 90. 110
Lab Sample ID: LCSD 680-665555/35
Matrix: Water
Analysis Batch: 665555
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 10.0 9.81 mg/L 98 90 _ 110 1 15
Fluoride 2.00 1.98 mg/L 99 90 _ 110 1 15
Chloride 10.0 10.1 mg/L 101 90 _ 110 0 15
Bromide 10.0 9.98 mg/L 100 90 _ 110 0 15
Lab Sample ID: 680-197627-4 MS
Matrix: Water
Analysis Batch: 665555
Analyte
Client Sample ID: Out005-TW004
Prep Type: Total/NA
Sample Sample Spike MS MS %Rec.
Result Qualifier Added Result Qualifier Unit D %Rec Limits
Sulfate 27 10.0 37.0 mg/L 101 80 _ 120
Fluoride 6.8 2.00 8.56 mg/L 90 80 _ 120
Chloride 3.4 10.0 13.9 mg/L 104 80 _ 120
Bromide 0.22 J 10.0 10.4 mg/L 102 80 - 120
Lab Sample ID: 680-197627-4 MSD
Matrix: Water
Analysis Batch: 665555
Client Sample ID: Out005-TW004
Prep Type: Total/NA
Sample Sample Spike MSD MSD %Rec. RPD
Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit
Sulfate 27 10.0 37.0 mg/L 101 80 - 120 0 15
Fluoride 6.8 2.00 8.60 mg/L 92 80. 120 0 15
Chloride 3.4 10.0 13.9 mg/L 105 80. 120 1 15
Bromide 0.22 J 10.0 10.5 mg/L 102 80 _ 120 0 15
Eurofins TestAmerica, Savannah
Page 9 of 23 4/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Method: D7511-12 - Total Cyanide
Lab Sample ID: MB 410-116346/17
Matrix: Water
Analysis Batch: 116346
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Total <0.0020
Lab Sample ID: LCS 410-116346/16
Matrix: Water
Analysis Batch: 116346
Analyte
0.0060 0.0020 mg/L
04/19/21 12:19 1
Client Sample ID: Lab Control Sample El
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Total
0.0400 0.0399 mg/L 100 84 _ 116
Method: OIA-1677 - Cyanide, Free (Flow Injection)
Lab Sample ID: MB 180-353688/41
Matrix: Water
Analysis Batch: 353688
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 04/16/21 19:26 1
Lab Sample ID: MB 180-353688/59
Matrix: Water
Analysis Batch: 353688
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 04/16/21 19:53 1
Lab Sample ID: MB 180-353688/81
Matrix: Water
Analysis Batch: 353688
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 04/16/21 20:27 1
Lab Sample ID: LCS 180-353688/40
Matrix: Water
Analysis Batch: 353688
Analyte
Cyanide, Free
Lab Sample ID: LCS 180-353688/58
Matrix: Water
Analysis Batch: 353688
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
0.0500 0.0554 mg/L 111 82 - 132
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Free
0.0500 0.0583 mg/L 117 82 _ 132
Eurofins TestAmerica, Savannah
Page 10 of 23 4/26/2021

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Method: OIA-1677 - Cyanide, Free (Flow Injection) (Continued)
FLab Sample ID: LCS 180-353688/80
Matrix: Water
Analysis Batch: 353688
LAnalyte
Cyanide, Free
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
0.0500 0.0555 mg/L 111 82 - 132
Eurofins TestAmerica, Savannah
Page 11 of 23 4/26/2021

QC Association Summary
Client: Civil & Environmental Consultants Inc
Project/Site: BBP Temporary Wells
HPLC/IC
Job ID: 680-197627-1
Analysis Batch: 665346
Lab Sample ID
Client Sample ID
Prep Type Matrix
Method
Prep Batch
680-197627-1
680-197627-2
680-197627-3
680-197627-4
680-197627-5
MB 680-665346/2
LCS 680-665346/3
LCSD 680-665346/4
Analysis Batch: 665554
Lab Sample ID
Out005-TW001
Out005-TW002
Out005-TW003
Out005-TW004
Out005-TW005
Method Blank
Lab Control Sample
Lab Control Sample Dup
Client Sample ID
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Prep Type Matrix
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
Method
Prep Batch
680-197627-1
680-197627-2
680-197627-3
MB 680-665554/2
LCS 680-665554/3
LCSD 680-665554/4
Analysis Batch: 665555
Lab Sample ID
Out005-TW001
Out005-TW002
Out005-TW003
Method Blank
Lab Control Sample
Lab Control Sample Dup
Client Sample ID
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Prep Type Matrix
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
Method
Prep Batch
680-197627-4
680-197627-5
MB 680-665555/33
LCS 680-665555/34
LCSD 680-665555/35
680-197627-4 MS
680-197627-4 MSD
Out005-TW004
Out005-TW005
Method Blank
Lab Control Sample
Lab Control Sample Dup
Out005-TW004
Out005-TW004
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
General Chemistry
Analysis Batch: 116346
Lab Sample ID
Client Sample ID
Prep Type Matrix
Method
Prep Batch
680-197627-1
680-197627-2
680-197627-3
680-197627-4
680-197627-5
MB 410-116346/17
LCS 410-116346/16
Analysis Batch: 353688
Lab Sample ID
Out005-TW001
Out005-TW002
Out005-TW003
Out005-TW004
Out005-TW005
Method Blank
Lab Control Sample
Client Sample ID
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Prep Type Matrix
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
D7511-12
Method
Prep Batch
680-197627-1
680-197627-2
680-197627-3
680-197627-4
680-197627-5
MB 180-353688/41
MB 180-353688/59
MB 180-353688/81
LCS 180-353688/40
Out005-TW001
Out005-TW002
Out005-TW003
Out005-TW004
Out005-TW005
Method Blank
Method Blank
Method Blank
Lab Control Sample
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
Total/NA Water
OIA-1677
OIA-1677
OIA-1677
OIA-1677
OIA-1677
OIA-1677
OIA-1677
OIA-1677
OIA-1677
Eurofins TestAmerica, Savannah
Page 12 of 23 4/26/2021

QC Association Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
General Chemistry (Continued)
Analysis Batch: 353688 (Continued)
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch
LCS 180-353688/58
LCS 180-353688/80
Lab Control Sample
Lab Control Sample
Total/NA Water
Total/NA Water
OIA-1677
OIA-1677
Eurofins TestAmerica, Savannah
Page 13 of 23 4/26/2021

Lab Chronicle
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Client Sample ID: Out005-TW001
Date Collected: 04/13/21 09:50
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-1
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 665346 04/22/21 18:50 UI TAL SAV
Instrument ID: CICK
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 665554 04/23/21 18:59 RKJ TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 1 116346 04/19/21 12:47 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 353688 04/16/21 20:10 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-TW002
Date Collected: 04/13/21 10:35
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-2
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 665346 04/22/21 19:03 UI TAL SAV
Instrument ID: CICK
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 665554 04/23/21 19:11 RKJ TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 1 116346 04/19/21 12:57 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 353688 04/16/21 20:12 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-TW003
Date Collected: 04/13/21 11:15
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-3
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 665346 04/22/21 19:15 UI TAL SAV
Instrument ID: LICK
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 665554 04/23/21 19:24 RKJ TAL SAV
Instrument ID: CICK
Total/NA Analysis D7511-12 1 116346 04/19/21 12:55 UJE2 ELLE
Instrument ID: 19369
Total/NA Analysis OIA-1677 1 353688 04/16/21 20:13 GRB TAL PIT
Instrument ID: ALPKEM3
Client Sample ID: Out005-TW004
Date Collected: 04/13/21 12:00
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-4
Matrix: Water
Prep Type
Batch Batch Dil Initial Final Batch Prepared
Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 665346 04/22/21 19:28 UI TAL SAV
Instrument ID: CICK
Eurofins TestAmerica, Savannah
Page 14 of 23 4/26/2021

Lab Chronicle
Client: Civil & Environmental Consultants Inc Job ID: 680-197627-1
Project/Site: BBP Temporary Wells
Client Sample ID: Out005-TW004
Date Collected: 04/13/21 12:00
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-4
Matrix: Water
Batch Batch Dil Initial Final Batch Prepared
Prep Type Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA Analysis 300.0-1993 R2.1 1 5 mL 5 mL 665555 04/23/21 20:27 UI TAL SAV
Total/NA Analysis D7511-12 1 116346 04/19/21 12:27 UJE2 ELLE
Instrument ID: 19369
Total/NA
Analysis OIA-1677
Instrument ID: ALPKEM3
1
353688 04/16/21 20:28 GRB TAL PIT
Client Sample ID: Out005-TW005
Date Collected: 04/13/21 12:40
Date Received: 04/14/21 10:30
Lab Sample ID: 680-197627-5
Matrix: Water
Prep Type
Batch Batch Dil Initial Final Batch Prepared
Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 665346 04/22/21 19:41 UI TAL SAV
Instrument ID: CICK
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 665555 04/23/21 21:05 UI TAL SAV
Instrument ID: CICK
Analysis D7511-12 1 116346 04/19/21 12:29 UJE2 ELLE
Instrument ID: 19369
Analysis OIA-1677 1 353688 04/16/21 20:30 GRB TAL PIT
Instrument ID: ALPKEM3
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Env, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
TAL SAV = Eurofins TestAmerica, Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins TestAmerica, Savannah
Page 15 of 23 4/26/2021

E£
1$
O
v
0)
CJ
oJ
a)
0
.c
0
Chain of Custody Record
(uc43011+ou) NQ,IFAV'.CN.RD- tt91.
• - a:z naoao 09¢
.plu..(DFWl-ZL Rsca
Page 16 of 23
Deliverable Requested: I, II, Ill, IV, Other (specify)
4/26/2021

Chain of Custody Record
COC No:
680-124854-46697.1
a gOad
Preservation Codes:
A - HCL M - Hexane
B-NaOH N - None
C - Zn Acetate 0 • AsNa02
D - Nitric Acid P - Na204S
E - NaHSO4 O - Na2S03
F - Me0H R - Na2S203
G • Amchlor S - H2SO4
H - Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J - DI Water V - MCAA
K - EDTA W - pH 4-5
L - EDA Z - other (specify)
Other:
0
0
z
o
c
C
llhI/IIII//IIIIIIIIIIllIiIllhIIII
Sample Disposal (A fee may e a sed if samples are retained longer than 1 month)
Return To Client Disposal By Lab I= Archive For Months
Special Instructions/QC Requirements:
'Empty Kit Relinquished by: (Date: (Time: !Method of Shipment:
c
n
0
U
Company
c
n
V
Cooler Temperatures) °C and Other Remarks
ll
,..,J
r7
-:b--'
-)
0
'J
?
E •l••
m-...
0
CDE—
E
0
+Carrier Tracking No(s):
0
a
sd
cn
Analysis Requested
sieuleluoo 4o agwnN lelol
.—
tY
n _,J
v
Received
Received by:
Lab PM:
Hoffman, Sheila B
E
o
7
W
..
U)ai
W to
rr
(uoµ3alulmold) algelieny 'ap!ueAD - LL91
..$`
x
�--?
�-'•IfIC\Ci
1
i
�
apuonld - ad210 00£
82 W
apiueAJlelol- ZL SL LLO.
`X,�
X
11
.]
`C•
�J,,��?
,
Ev
0
FF
Company
Custody Seal Nc
ION Jo set eidwes palallli pie
P1sibbrgazard Identification
Non -Hazard U Flammable Skin Irritant = Poison 8 = Unknown =Radiological
Deliverable Requested: I, II, III, IV, Other (specify)
a
Due Date Requested:
TAT Requested (days ]
(Compliance Project: n Yes ,1 No
PO #:
300-226.0012
Matrix
(Wmeeler.
5=wIN.
owesteloll,
BT.TIssue. MNr)
Phone: 9 1 o - V6 -060 /
J
a N E A..
w~Utz
o
Date/Ti e: `
P i l 3i a t
0
(Company:
Civil & Environmental Consultants Inc
2
In
11)
0
10----
V4(I.
0
3
0
a p
0
y
Sample Date
1-E
1
Client Information
Client Contact:
Michael Worden
Address:
2704 Cherokee Farm Way Suite 101
y
c
y Y
O
N
m Z
C. F
a
Email:
[e-mail]
Project Name:
BBP Temporary Wells
in
Sam le Identification
to
©
Q
0
f
14
O
01
►
0
V
0
23
1
r^
II.J
Ln©
O
a
Relinquished by // r Ic k / JI
Relinquished by,� 1 /.
(i )l�-k:�lLi1J1
Relinquished by:
Custody Seals Intact:
A Yes -1 No
0
0
0
Page 17 of 23
4/26/2021

u
N
II
Chain of Custody Record Charlotte 229
tiff eurofins
Environment Testing
America
ociu-lututr unain or L:US ody
Sampler. ��^i ��
� t t WI kVA
Lab PM:
Hoffman, Sheila B
Cartier Tracking No(s):
COC No:
680-124854-46697.1
Client Contact
Michael Worden
Pt ona
CHO, g7 0
(
Et ta :
[e-mail]
Stab of Origin:
Page:
Page 1 of 1
Company
Civil & Environmental Consultants Inc
PWSID:
Analysis Requested
Job #:
Address:
2704 Cherokee Farm Way Suite 101
Due Date Requested:
+
o
_
o $
m 8t5
D7511_12 - Total Cyanide __-
300 ORGFM 28D-Fluoride
1677 - Cyanide, Available (Flow Injection)
Total Number of containers
Preservation Codes:
A-HCL M- Hexane
- NaOH N -Nona
C-Zn Acetate O-AsNa02
D - Nitric Add P - Na204S
E - NaHSO4 O - Na2SO3
F - McOH R - Na2S2O3
G - Amebic( S - H2SO4
H- Ascorbic Add T - TSP Dodecahydrate
I - Ice U - Acetone
J - DI Water V-MCAA
K - EDTA W - pH 4-5
L-EDA Z- other (spedry)
Other:
City8
Knoxville
TAT Requested (days):
.C±
CJ �''���""''������-WittJJJ``�"
Stale, Zip:
TN. 37920
Compliance Project A Yes A No
Phone:
#;
3O0-226.0012
Email:
[e-mail]
WO #:
Project Name:
BBPTemporaryWells
Project #:
68025248
Site: r
�. 1/ c,�
:
l
SSOW#:
tthh
Sample Identification
Sample Date
Sample
Time
Sample
Type
(C=comp,
G grab)
Matrix
(..—..+.
o-..
er-T....w+
i
B
a
S dal Instructions/Note:
Preeervaton
Code:
N
D 1A-t000 - "rtAan 0 1
`-{-13-2/
Co 960
Cyr
Lk)
IC
:C
x
D t,-oo g - -7rA) 0eN .
16 3S
--
t<<6
(
I
f
©t�-cos--�
_12CX)
.
L
10u6—Oo S cc gi
nud---bos- 7-woos
19.1-tc
—
........-
...e..
.....J
s�,
r
v
/
V
-1
X
'--1
_
G
Posslbla Hazard identification
Da-pe
Non -Hazard Flammable Skin Irritant 0 Poison B = Unknown Radiological
Sample Disposal (A fee may
�Retum To Client
arse
Disposal
sed if samples are retained longer than 1 month)
By Lab Archive For Months
Deliverable Requested: I, II, III, IV, Other (specify)
Special Instructions/QC Requirements:
Empty Kit Relinquished by:
,Date:
Time:
'Method of Shipment
r
Relinquished by. r
Ai a 1
Date/Time:
tr3-2) 1 sod
Company
('-eG
Received by t 1'.
,'�,: ( o-utol I
Datemme..
'atl 121 15ac.
Company
Relinquished 1 /
l J I L1 vt ! t
1
Dat e
�,4'`'i v
Company
Received by
Date/Time,
Company
(
Relinquished by.
Dateffirbe:
Company
P Y
Received b y
gi/�J 1 / `' _ C/
C��R�� l
4,
Custody Seals Intact
A Yes A No
Custody Seal No.:
Gaoler Temperature(s)°C and then Romance:
O +
Ver 11/01
Page 18 of 23
4/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-197627-1
Login Number: 197627
List Number: 1
Creator: Sims, Robert D
Question
List Source: Eurofins TestAmerica, Savannah
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. N/A
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins TestAmerica, Savannah
Page 19 of 23 4/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-197627-1
Login Number: 197627
List Number: 2
Creator: Foreman, Leah M
Question
List Source: Eurofins Lancaster Laboratories Env
List Creation: 04/15/21 01:13 PM
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal is intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable (</=6C, not frozen). True
Cooler Temperature is recorded. True
WV: Container Temperature is acceptable (</=6C, not frozen). N/A
WV: Container Temperature is recorded. N/A
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
There is sufficient vol. for all requested analyses. True
Multiphasic samples are not present. True
Samples do not require splitting or compositing. N/A
Is the Field Sampler's name present on COC? True
Sample Preservation Verified. N/A
Residual Chlorine Checked. N/A
Sample custody seals are intact. N/A
Eurofins TestAmerica, Savannah
Page 20 of 23 4/26/2021

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-197627-1
Login Number: 197627
List Number: 3
Creator: Watson, Debbie
Question
List Source: Eurofins TestAmerica, Pittsburgh
List Creation: 04/15/21 02:13 PM
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? N/A
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. True
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins TestAmerica, Savannah
Page 21 of 23 4/26/2021

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Project/Site: BBP Temporary Wells
Laboratory: Eurofins TestAmerica, Savannah
The accreditations/certifications listed below are applicable to this report.
Job ID: 680-197627-1
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 269 12-31-21
Laboratory: Eurofins Lancaster Laboratories Env, LLC
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority Program Identification Number Expiration Date
A2LA Dept. of Defense ELAP 1.01 11-30-22
Alaska State PA00009 06-30-22
Alaska (UST) State 17-027 01-31-21 *
Arizona State AZ0780 03-12-22
Arkansas DEQ State 19-053-0 08-09-21
California State 2792 01-31-22
Colorado State PA00009 06-30-21
Connecticut State PH-0746 06-30-21
DE Haz. Subst. Cleanup Act (HSCA) State 019-006 (PA cert) 01-31-22
Delaware (DW) State N/A 02-01-22
Florida NELAP E87997 06-30-21
Hawaii State N/A 01-31-22
Illinois NELAP 004559 01-31-22
Iowa State 361 03-02-22
Kansas NELAP E-10151 10-31-21
Kentucky (DW) State KY90088 01-01-22
Kentucky (UST) State 1.01 11-30-22
Kentucky (WW) State KY90088 12-31-21
Louisiana NELAP 02055 06-30-21
Maine State 2019012 03-12-22
Maryland State 100 06-30-22
Massachusetts State M-PA009 06-30-21
Michigan State 9930 01-31-22
Minnesota NELAP 042-999-487 12-31-21
Missouri State 450 01-31-22
Montana (DW) State 0098 01-01-22
Montana (UST) State 0098 01-01-22
Nebraska State NE-OS-32-17 01-31-22
Nevada State PA000092019-3 07-31-21
New Hampshire NELAP 273019 01-10-22
New Jersey NELAP PA011 06-30-21
New York NELAP 10670 04-01-22
North Carolina (DW) State 42705 07-31-21
North Carolina (WW/SW) State 521 12-31-21
North Dakota State R-205 01-31-22
Oklahoma NELAP R-205 08-31-21
Oregon NELAP PA200001-018 09-12-21
PALA Canada 1978 05-08-21
Pennsylvania NELAP 36-00037 01-31-22
Rhode Island State LA000338 01-31-22
South Carolina State 89002002 01-31-22
Tennessee State 02838 01-31-22
Texas NELAP T104704194-20-38 08-31-21
Utah NELAP PA000092019-16 03-01-22
* Accreditation/Certification renewal pending - accreditation/certification considered valid.
Eurofins TestAmerica, Savannah
Page 22 of 23 4/26/2021

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Project/Site: BBP Temporary Wells
Laboratory: Eurofins Lancaster Laboratories Env, LLC (Continued)
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Job ID: 680-197627-1
Authority Program Identification Number Expiration Date
Vermont State VT - 36037 10-29-21
Virginia NELAP 10561 06-14-21
Washington State C457 04-12-22
West Virginia (DW) State 9906 C 12-31-21
West Virginia DEP State 055 06-30-21
Wyoming State BTMS-L 01-31-22
Wyoming (UST) A2LA 1.01 11-30-22
Laboratory: Eurofins TestAmerica, Pittsburgh
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 434 12-31-21
Eurofins TestAmerica, Savannah
Page 23 of 23 4/26/2021

Draft — Hydrogeological Conceptual Site Model Update — Badin Business Park
2019-02-07
EHS Support LLC

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
February 21, 2019
Michael W. Worden
Environeering, Inc.
16100 Cairnway
Suite 320
Houston, TX 77084
RE: Project: Outfal 1005-SW
Pace Project No.: 92416983
Dear Michael Worden:
Enclosed are the analytical results for sample(s) received by the laboratory on February 08, 2019.
The results relate only to the samples included in this report. Results reported herein conform to the
most current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual,
where applicable, unless otherwise noted in the body of the report.
A revised report is being submitted on 2/21/19 to revise a sample ID, per client request.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
/ritec,
Nicole Gasiorowski
[e-mail]
[phone]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 1 of 22

CERTIFICATIONS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Asheville Certification Ds
2225 Riverside Drive, Asheville, NC 28804
Florida/NELAP Certification #: E87648
Massachusetts Certification #: M-NC030
North Carolina Drinking Water Certification #: 37712
North Carolina Wastewater Certification #: 40
South Carolina Certification #: 99030001
VirginiaNELAP Certification #: 460222
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 2 of 22

SAMPLE SUMMARY
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID Matrix Date Collected Date Received
92416983001 0ut005-01-2.510 Water 02/07/19 09:30 02/08/19 08:50
92416983002 0ut005-02-NEW S138KV Water 02/07/19 09:45 02/08/19 08:50
92416983003 0ut005-03-6.900 Water 02/07/19 10:00 02/08/19 08:50
92416983004 0ut005-04-6.500 Water 02/07/19 10:20 02/08/19 08:50
92416983005 0ut005-05-NEW E65 Water 02/07/19 10:45 02/08/19 08:50
92416983006 0ut005-06-2.400 Water 02/07/19 11:15 02/08/19 08:50
92416983007 0ut005-07-2.210 Water 02/07/19 11:30 02/08/19 08:50
92416983008 0ut005-08-2.200 Water 02/07/19 11:50 02/08/19 08:50
92416983009 0ut005-09-2.100 Water 02/07/19 12:05 02/08/19 08:50
92416983010 0ut005-10-6.100 Water 02/07/19 12:50 02/08/19 08:50
92416983011 0ut005-11-6.000 Water 02/07/19 13:20 02/08/19 08:50
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 3 of 22

SAMPLE ANALYTE COUNT
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID
Analytes
Method Analysts Reported Laboratory
92416983001 0ut005-01-2.510
92416983002 0ut005-02-NEW S138KV
92416983003 0ut005-03-6.900
92416983004 0ut005-04-6.500
92416983005 0ut005-05-NEW E65
92416983006 0ut005-06-2.400
92416983007 0ut005-07-2.210
92416983008 0ut005-08-2.200
92416983009 0ut005-09-2.100
92416983010 0ut005-10-6.100
92416983011 0ut005-11-6.000
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E DMN 1 PASI-A
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 4 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-01-2.510 Lab ID: 92416983001 Collected: 02/07/19 09:30 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 5.7 mg/L 0.40 0.20 4 02/10/19 10:06 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.28 mg/L 0.024 0.012 3 02/12/19 11:17 02/12/19 18:35 57-12-5 M1
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 5 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-02-NEW S138KV Lab ID: 92416983002 Collected: 02/07/19 09:45 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 0.35 mg/L 0.10 0.050 1 02/10/19 02:05 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide ND mg/L 0.0080 0.0040 1 02/12/19 11:17 02/12/19 18:15 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 6 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-03-6.900 Lab ID: 92416983003 Collected: 02/07/19 10:00 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 0.076J mg/L 0.10 0.050 1 02/10/19 02:21 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide ND mg/L 0.0080 0.0040 1 02/12/19 11:17 02/12/19 18:20 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 7 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-04-6.500 Lab ID: 92416983004 Collected: 02/07/19 10:20 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 0.080J mg/L 0.10 0.050 1 02/10/19 03:23 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide ND mg/L 0.0080 0.0040 1 02/12/19 11:17 02/12/19 18:20 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 8 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-05-NEW E65 Lab ID: 92416983005 Collected: 02/07/19 10:45 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.9 mg/L 0.10 0.050 1 02/10/19 03:38 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.0073J mg/L 0.0080 0.0040 1 02/12/19 11:17 02/12/19 18:21 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 9 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-06-2.400 Lab ID: 92416983006 Collected: 02/07/19 11:15 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 4.5 mg/L 0.10 0.050 1 02/10/19 03:54 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.21 mg/L 0.016 0.0080 2 02/12/19 11:17 02/12/19 18:37 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 10 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-07-2.210 Lab ID: 92416983007 Collected: 02/07/19 11:30 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 4.6 mg/L 0.10 0.050 1 02/10/19 04:09 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.16 mg/L 0.016 0.0080 2 02/12/19 11:17 02/12/19 18:40 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 11 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-08-2.200 Lab ID: 92416983008 Collected: 02/07/19 11:50 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 4.5 mg/L 0.10 0.050 1 02/10/19 04:25 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.18 mg/L 0.016 0.0080 2 02/12/19 11:17 02/12/19 18:41 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 12 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-09-2.100 Lab ID: 92416983009 Collected: 02/07/19 12:05 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 4.5 mg/L 0.10 0.050 1 02/10/19 04:40 16984-48-8 M1
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.19 mg/L 0.0080 0.0040 1 02/12/19 11:17 02/12/19 18:25 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 13 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-10-6.100 Lab ID: 92416983010 Collected: 02/07/19 12:50 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 0.36 mg/L 0.10 0.050 1 02/10/19 05:27 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide ND mg/L 0.0080 0.0040 1 02/12/19 11:17 02/12/19 18:26 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 14 of 22

ANALYTICAL RESULTS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-11-6.000 Lab ID: 92416983011 Collected: 02/07/19 13:20 Received: 02/08/19 08:50 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 2.7 mg/L 0.10 0.050 1 02/10/19 05:42 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.11 mg/L 0.0080 0.0040 1 02/12/19 11:17 02/12/19 18:27 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 15 of 22

QUALITY CONTROL DATA
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 457299 Analysis Method: EPA 300.0 Rev 2.1 1993
QC Batch Method: EPA 300.0 Rev 2.1 1993 Analysis Description: 300.0 IC Anions
Associated Lab Samples: 92416983001, 92416983002, 92416983003, 92416983004, 92416983005, 92416983006, 92416983007,
92416983008, 92416983009, 92416983010, 92416983011
METHOD BLANK: 2494448 Matrix: Water
Associated Lab Samples:
Parameter
92416983001, 92416983002, 92416983003, 92416983004, 92416983005, 92416983006, 92416983007,
92416983008, 92416983009, 92416983010, 92416983011
Blank Reporting
Units Result Limit MDL Analyzed Qualifiers
Fluoride
mg/L ND 0.10 0.050 02/10/19 00:01
LABORATORY CONTROL SAMPLE: 2494449
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits
Qualifiers
Fluoride mg/L 2.5 2.6 103 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2494450 2494451
MS MSD
92416922005 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L ND 2.5 2.5 2.3 2.4 92 95 90-110 3 10
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2494452 2494453
MS MSD
92416983009 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L 4.5 2.5 2.5 5.0 4.5 22 3 90-110 10 10 M1
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 16 of 22

QUALITY CONTROL DATA
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 457402
QC Batch Method: EPA 9012E
Analysis Method: EPA 9012B
Analysis Description: EPA 9012B Cyanide
Associated Lab Samples: 92416983001, 92416983002, 92416983003, 92416983004, 92416983005, 92416983006, 92416983007,
92416983008, 92416983009, 92416983010, 92416983011
METHOD BLANK: 2494751 Matrix: Water
Associated Lab Samples:
Parameter
92416983001, 92416983002, 92416983003, 92416983004, 92416983005, 92416983006, 92416983007,
92416983008, 92416983009, 92416983010, 92416983011
Blank Reporting
Units Result Limit MDL Analyzed Qualifiers
Cyanide mg/L ND 0.0080 0.0040 02/12/19 18:11
LABORATORY CONTROL SAMPLE: 2494752
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits
Qualifiers
Cyanide mg/L 0.1 0.092 92 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2494753 2494754
MS MSD
92416983001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Cyanide mg/L 0.28 0.1 0.1 0.29 0.35 11 70 75-125 18 20 M1
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2494755 2494756
MS MSD
92416983002 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Cyanide mg/L ND 0.1 0.1 0.095 0.086 95 86 75-125 9 20
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 17 of 22

QUALIFIERS
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean -Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
PASI-A Pace Analytical Services - Asheville
ANALYTE QUALIFIERS
M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 18 of 22

QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: O u tfa l l 005-SW
Pace Project No.: 92416983
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID
Analytical
QC Batch Method QC Batch Analytical Method Batch
92416983001 0ut005-01-2.510 EPA 300.0 Rev 2.1 1993 457299
92416983002 0ut005-02-NEW S138KV EPA 300.0 Rev 2.1 1993 457299
92416983003 0ut005-03-6.900 EPA 300.0 Rev 2.1 1993 457299
92416983004 0ut005-04-6.500 EPA 300.0 Rev 2.1 1993 457299
92416983005 0ut005-05-NEW E65 EPA 300.0 Rev 2.1 1993 457299
92416983006 0ut005-06-2.400 EPA 300.0 Rev 2.1 1993 457299
92416983007 0ut005-07-2.210 EPA 300.0 Rev 2.1 1993 457299
92416983008 0ut005-08-2.200 EPA 300.0 Rev 2.1 1993 457299
92416983009 0ut005-09-2.100 EPA 300.0 Rev 2.1 1993 457299
92416983010 0ut005-10-6.100 EPA 300.0 Rev 2.1 1993 457299
92416983011 0ut005-11-6.000 EPA 300.0 Rev 2.1 1993 457299
92416983001 0ut005-01-2.510 EPA 9012B 457402 EPA 9012B 457635
92416983002 0ut005-02-NEW S138KV EPA 9012B 457402 EPA 9012B 457635
92416983003 0ut005-03-6.900 EPA 9012B 457402 EPA 9012B 457635
92416983004 0ut005-04-6.500 EPA 9012B 457402 EPA 9012B 457635
92416983005 0ut005-05-NEW E65 EPA 9012B 457402 EPA 9012B 457635
92416983006 0ut005-06-2.400 EPA 9012B 457402 EPA 9012B 457635
92416983007 0ut005-07-2.210 EPA 9012B 457402 EPA 9012B 457635
92416983008 0ut005-08-2.200 EPA 9012B 457402 EPA 9012B 457635
92416983009 0ut005-09-2.100 EPA 9012B 457402 EPA 9012B 457635
92416983010 0ut005-10-6.100 EPA 9012B 457402 EPA 9012B 457635
92416983011 0ut005-11-6.000 EPA 9012B 457402 EPA 9012B 457635
REPORT OF LABORATORY ANALYSIS
Date: 02/21/2019 11:32 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 19 of 22

+
• ZaIaI
Document Name:
Sample Condition Upon Receipt{SOUR}
Document Revised: February 7, 2018
Page 1 of 2
Document No,:
F-CAR-CS-033-Rev.06
Issuing Authority:
Pace Carolinas Quailty Office
Laboratory receiving samples:
Asheville ❑ Eden❑
Spies( lntj kion'
UenReci!t <�
Courier:
❑ Commercial
Custody Scul Prucnt?
Client Name:
Greenwood ❑
+N P4 { rotAzr1>JC,
❑
Fed Ex OURS DIMS
❑Pace ❑Other;
❑YC]lu
Huntersville ❑ Raleigh Mechanicsville❑
Project
Client
Seals illtdl.t7 ❑fe5 ONO
Packing Material:
Thermometer:
Gun ID•
[]Bubble Wrap
❑Bubble Bagse
Type of ice:
e
❑ Other
❑Blue
Cooler Temp (°C): , S {{ Correction Factor: Add/Subtract (°C) Ott
Cooler Temp Corrected (°C): 1 .'
USDA Regulated Soil (❑ N/A, water sample)
Did samples origi a In a quarantine zone within the United States: CA, NY, or 5C (check maps)?
❑Yes o
W©# : 9241.6983
Date/InItiais Person Examining Contents:._,
Er None
Biological Tissue Fro n?2
❑Yes ❑NoJ/A
Tempshould be above freezing to 6°C
Panicles out of temp criteria. Samples on Ice, cooiing process
has begun
Did samples originate from a foreign source {intern tally,
including Hawailand Puerto Rito}7 []Yes No
Comments/Discrepancy:
Chain of Custody Present?
C
IDNo
❑N/A
1.
Samples Arrived within Hold Time?
Yes
❑No
❑N/A
2.
Short Hold Time Analysis (472 hr.)?
QYas
10sr'o
❑N/A
3.
Rush Turn Around Time Requested?
❑Yes
„C1No
❑N/A
4.
Sufficient Volume? ` '
-egs
❑No
❑N/A
S.
Correct Containers Used?
-Pace Containers Used?
e l'es
5
❑No
DNS
❑N/A
❑N/A
6.
Containers Intact?
,.218s
ONO
©N/A
7.
Dissolved analysis: Samples Field Filtered?
Des
ON
/A
8.
Sample Labels Match COC?
-Includes Date/Time/ID/Analysis Matrix:
es
v ar
❑No
❑N/A
9.
Headspace in VOA Vials (>5-6mm)7
[Eves
❑No
N/A
10.
Trip Blank Present?
Trip Blank Custody Seals Present?
Des
fYes
No
❑No
N/
41 N/A
11.
COMMENTS/SAMPLE DISCREPANCY
Field Data Required? ❑Yes ❑No
,Lot ID of sp!it contaIner:
CLIENT NOTIFICATION/RESOLUTION
Person contacted!
Project Manager SCURF Review:
Project Manager SRF Review:
Date/Time:
Date:
Date:
Page 20 of 22

/2eAnalyl(ca/ s
Document Name:
Sample Condition Upon Receipt(SCUR)
Document No,:
F-CAR•CS-033•Rev.08
*Check mark top half of box if pH and/or dechlorination is
verified and within the acceptance range for preservation
samples.
Exceptions: VOA, Coliform, TOC, Oil and Grease, DRO/8015 (water) DOC, LLHg
**Bottom half of box is to list number of bottle
Projt
Document Revised: February 7, 2018
Page 1 of 2
Issuing Authority:
Pace Carolinas Quality Office
W4# : 9241• 6983
PM: Nf10 Due Date: 02/22/19
CLIENT: 92-Alcoa
item#
BP4U-125 mL Plastic Unpreserved (N/A) (CI-)
BP3U-250 mL Plastic Unpreserved (N/A)
BP2U-500 mL Plastic Unpreserved (N/A)
BP1U-1 liter Plastic Unpreserved (N/A)
BP45-125 mL Plastic H2SO4 (pH < 2) (CI-)
BP3N-250 mL plastic HNO3 (pH < 2)
m
A
0
ro
Z
61
w
w
d
Z
N
u
N
1.6
E
N
a
CO
•
BP4C-125 mL Plast'sc NaOH [pH > 12) (CI-)
1
1
1
'N'i\\\\
\„\\\:\::
(
,
3
4
1111
5
6
7
8
l
9
10
\
i
l
i
11
12
\
— —
—
" '
AG1U-1 liter Amber Unpreserved (N/A) (CI-)
AG1H-1liter Amber HCI (pH < 2)
AG3U-250 mL Amber Unpreserved (N/A) (CI-)
AG3A(DG3A)-250 mL Amber NH4C1(N/A)(CI-)
DG9H-40 mL VGA HCI (N/A)
VG9T-40 mL VOA Na252O3 (N/A)
VOOU-4O ml VOA Unp (N/A)
DG9P-40 mL VOA 1-13PO4 (N/A)
VOAK (6 vials per kit)-5035 kit (N/A}
V/GK (3 vials per kit)-VPI-I/Gas kit (N/A)
SP5T-125 mL Sterile Plate (N/A — lab)
SP2T-250 mL Sterile Plastic (N/A— tab)
BP3A-250 mL Plastic (NH2)25O4 (9.3-9.7)
AGOU-100 mL Amber Unpreserved vials (N/A)
VSGU-20 mLSesntlilatlon vials (N/A)
DG9U-40 mL Amber Unpreserved vials (N/A)
Sample ID
Type of Preservative
pH Adjustment Log for Preserved Samples
pH upon receipt
Date preservation adjusted
Time preservation
adjusted
Amount of Preservative
added
Lot p
Note: Wheneve there Is a discrepancy affecting North Carolina compliance samples, a copy of his Form will be sent to the North Carolina DEHNR Certification Offfice liee21 of 22
Out of hold, incorrect preservative, out o temp, Incorrect containers. y

.,: ...:
INV:::
:_,:.,..,..:in
i-!Li.r..
p:,5 f
,.4.,.
i i.
1 „,
1616-'•-1'.Uii.:7
r.to •
:4,,,..•'.
• .
i
, -1: '
-,4`q
, .1i
; '17'
C.
-1.; e
'1. .!
4:)'-'i
^,
• - '...
.T..,.1;
Phone. ''r7 3•4,,Vrt.r.0—i ax: J
Requested Due Date. P
TFIX
Drinking Wakw
Wafer
Wasle Wader
Product
SAMPLE ID snwsco
One Character per box. woe
(AZ, 0-9 /, Aie
oiner
Sample Ids must be unique
...
8,.
" k•A
c.
'' -q ...,
k
i r.
..
R
_.
I
.
m<
6
i
C)
rera2VAIMMIGai.
Section A Si
Required Client Information: Ri
iff
:61
-..
ik::::i
:
0
L
0
.,..„
_.
0
.,-.
b
iiiii)i
0
•
0
-
0
g
o
g
?.,
a
o
R
'
,
o
8
g
n..
—_
Ou1005-02 p6kisisgai
o
59
o
\
Ci''
1:1
1;i,,.
-
_
.1-1
11\ik5.
\:,!!•,,,1
,.,....L,L
clEit.gr
E&
j,
(r.`2
s.ie Order #:
1 To. Michael Wordon
To:
CHAIN -OF -CUSTODY / Analytical Request Documen
The Chain -of -Custody is a LEGAL DOCUMENT. AD relevant fields must be comple
e section C
red Project Information: Invoice Information:
t!Et
k,3"4.
c'•••,
F*.s.
4--s
c's
t•-••••
q•-.1
cs,
c•-s,
G--,
ch,
MATRIX CODE (s5e yard odes 10 let)
SAMPLE TYPE IG.,,S FLAB C COM.P)
:
y,
i
\
\
(
t
...,
.-.
o
o
1—
m
SIGNATURE of SAMPLER: „;!:::t.
DATE Signed: 7/PT
POINT Name OfSAMPLER: f_ER:
V
ilt
-4k.*:
4t
—
a
>
—I
rri
m
o
—1
m
.
•
_
,
i,.,4
SAMPLE TEMP AT COL L ECDON
Pape Project Manager nioole,[e-mail],
Pace Profile #: 7478
2 5,1
0 ce,3
Ei —
:k
"N..
Attention: krvirot....)
Company Name: .__7d11:Aaria27E-A,
-...4
# OF CONTAINERS
(0
e'7<%,—Tc-"K"7"-"?<"--><"
Unpreserved
[0
H2SO4
I'
-.4
,,,
--11
....,
.
•
..„,
"
).
0 3
-@tf2woa4
9
NaOH
Na2S203
co
co
.'Ai.
Methanol
Other
YIN . CI
x
x
x
x
x
x
x
x
x
x
x
X
9012 Cyanide
x
x
x
X
x
x
x
x
>i< 1
X
X
x
300.0 FTuoride
r
--,--,,
--.1
3
!
;,i
i.:,
P
17:'.
•
1
Page : Of
t''.'•Y:
al14',L
V
pg..
,
4'; ;$'
c
t1:4
TEMP in C.
tde.)
)
4iii
1. 7,
74
Residual Chlorine (YRil)
Received an
Ica
(Y44)
,
,41.
;4117
—
,
,,
,' ••,,
r
•Q.,
\,,,:i
-. 01
-- ,.2
- • .44-,
Cuslody
Sealed
Ccoler
(YIN)
Z
'' f
aBt
-„,
' .
(
.i
iniact
(YiN)
-"‹
...,..-,,
Ili
-T I
....
'
\
.
Page 22 of 22

Draft — Hydrogeological Conceptual Site Model Update — Badin Business Park
2019-03-13
EHS Support LLC

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
March 17, 2019
Michael W. Worden
Environeering, Inc.
16100 Cairnway
Suite 320
Houston, TX 77084
RE: Project: Outfall 005 (NEW) 137-266
Pace Project No.: 92421169
Dear Michael Worden:
Enclosed are the analytical results for sample(s) received by the laboratory on March 13, 2019. The
results relate only to the samples included in this report. Results reported herein conform to the most
current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where
applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Ncylit
Angela Baioni
[e-mail]
[phone]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 1 of 12

CERTIFICATIONS
Project: Outfall 005 (NEW) 137-266
Pace Project No.: 92421169
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Asheville Certification Ds
2225 Riverside Drive, Asheville, NC 28804
Florida/NELAP Certification #: E87648
Massachusetts Certification #: M-NC030
North Carolina Drinking Water Certification #: 37712
North Carolina Wastewater Certification #: 40
South Carolina Certification #: 99030001
VirginiaNELAP Certification #: 460222
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 2 of 12

SAMPLE SUMMARY
Project: Outfall 005 (NEW) 137-266
Pace Project No.: 92421169
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID Matrix Date Collected Date Received
92421169001 0ut005-05-NEW E65
Water 03/13/19 11:05 03/13/19 15:34
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 3 of 12

SAMPLE ANALYTE COUNT
Project: Outfall 005 (NEW) 137-266
Pace Project No.: 92421169
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID
Method
Analytes
Analysts Reported Laboratory
92421169001 Out005-05-NEW E65 EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA9012B CJH1 1 PASI-A
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 4 of 12

ANALYTICAL RESULTS
Project: Outfall 005 (NEW) 137-266
Pace Project No.: 92421169
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-05-NEW E65 Lab ID: 92421169001 Collected: 03/13/19 11:05 Received: 03/13/19 15:34 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 4.2 mg/L 0.20 0.10 2 03/15/19 00:04 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide ND mg/L 0.0080 0.0040 1 03/16/19 13:00 03/17/19 14:34 57-12-5 M1,R1
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 5 of 12

QUALITY CONTROL DATA
Project: Outfall 005 (NEW) 137-266
Pace Project No.: 92421169
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 463269 Analysis Method: EPA 300.0 Rev 2.1 1993
QC Batch Method: EPA 300.0 Rev 2.1 1993 Analysis Description: 300.0 IC Anions
Associated Lab Samples: 92421169001
METHOD BLANK: 2520607 Matrix: Water
Associated Lab Samples: 92421169001
Blank Reporting
Parameter Units Result Limit
MDL
Analyzed Qualifiers
Fluoride
mg/L ND 0.10 0.050 03/14/19 15:48
LABORATORY CONTROL SAMPLE: 2520608
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Fluoride mg/L 2.5 2.5 99 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2520609 2520610
MS MSD
92421097007 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L ND 2.5 2.5 1.8 1.8 71 72 90-110 2 10 M1
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2520611 2520612
MS MSD
92421154004 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L ND 2.5 2.5 2.5 2.5 98 99 90-110 1 10
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 6 of 12

QUALITY CONTROL DATA
Project: Outfall 005 (NEW) 137-266
Pace Project No.: 92421169
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 463728 Analysis Method: EPA 9012B
QC Batch Method: EPA 9012E Analysis Description: EPA 9012B Cyanide
Associated Lab Samples: 92421169001
METHOD BLANK: 2522582 Matrix: Water
Associated Lab Samples: 92421169001
Blank Reporting
Parameter Units Result Limit
MDL
Analyzed Qualifiers
Cyanide mg/L ND 0.0080 0.0040 03/17/19 14:32
LABORATORY CONTROL SAMPLE: 2522583
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Cyanide mg/L 0.1 0.11 105 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2522584 2522585
MS MSD
92421169001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Cyanide mg/L ND 0.1 0.1 0.061 0.091 58 87 75-125 39 20 M1,R1
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 7 of 12

QUALIFIERS
Project: Outfall 005 (NEW) 137-266
Pace Project No.: 92421169
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean -Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
PASI-A Pace Analytical Services - Asheville
ANALYTE QUALIFIERS
M1
R1
Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
RPD value was outside control limits.
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 8 of 12

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: Outfall 005 (NEW) 137-266
Pace Project No.: 92421169
Lab ID
Sample ID QC Batch Method
Analytical
QC Batch Analytical Method Batch
92421169001 0ut005-05-NEW E65 EPA 300.0 Rev 2.1 1993 463269
92421169001 0ut005-05-NEW E65 EPA 9012B 463728 EPA 9012B 463766
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 9 of 12

///!,26vAnalytical
Laboratory receiving samples:
Asheville ❑ Eden❑
Courier:
0 Commercial
i
Client Name:
]Fed Ex PS
0Pace
Document Name:
Sample Condition Upon Receipt(SCUR)
Document No.:
P-CAR•CS-033-Rev,O6
Greenwood f] Huntersville ❑
Project
Client
Custody. Seal Present? Dyes
SeafsIntact? °Yes ❑N
Packing Material: ❑Bubble Wrap 09ubble Bags
❑IR Gun ID ./_,5 Type of ice;
Cooler Temp {'C): 3 II Correction Factor: Add/Subtract CC) — (s 1
Cooler Temp Corrected ('G):. '31 3
Thermometer:
None
USDA Regulated Soil (❑ N/A, water sample)
Dld samples originate in a quarantine zone within the United States: CA, NY, or SC (check maps)?
[]Yes ONo
El Other
['Blue ❑None
Document Revised: February 7, 2018
Page 1 of 2
Issuing Authority:
Pace Carolinas Cluafity Office
Raleigh f �° Mechanicsville❑
WD#:92421169
liu11II l l 11 l 1 UII11
92421169
Date/Initials Person Examining Contenh:,1-1
3-s.3Rt5
Blofogical Tissu�.e, F%°zen?
[Yes ❑No 7/A
Temp should be above freezing to 6'C
['Samples out of temp criteria. Samples on ice, cooling process
haslfegu0
Dld samples originate From a foreign source (intsegationally,
Inducting Hawaii and Puerto Rico)? ❑Yes No
Chain of Custody Present?
Samples Arrived within Hold Time?
ONo ON/A
ONo ❑N/A
Comments/Discrepancy:
Short Hold Time Analysis (<72 hr.)?
Rush Turn Around Time Requested?
Sufficient Volume?
Correct Containers Used?
-Pace Containers Used?
Containers intact?
Yes No [)N/A
DES
fliNo ❑N/A
❑Na ON/A
Yes ONo ,CINIA
fifes ONo ❑N/A
ONo ON/A
Dissolved analysis: Samples Field Filtered?
Sample Labels Match COC?
Yes ONo K/A
Yes ONo ON/A
-includes Date/Time/ID/Analysis Matrix:
Headspace in VOA Vials (>5-6mm)?
Trip Blank Present?
Trip 'Blank Custody Seals Present?
OYes EjNo A
:Yes ❑No /A
DYes OND [/)'N/A
10.
RLPAIYCY rie
CLIENT NOTIFICATION/RESOLUTION
Lot 10 of split containers:
Person contacted:
Date/Time:
Project Manager SCURF Review;
Proiect Manager SRF Review:
OM
Date:
Date:
Page 10 of 12

Document Name:
Sample Conditfon Upon Receipt(SCUR
Document No.:
F-CAR-CS-033-Rev_06
Document Revised: February 7, 2018
Pagelof2
lssuingAuthority:
Pace Carolinas Qual' Ofn
*Check mark top half of box If pH and/or dechlor€nation is
verified and within the acceptance range for preservation
samples.
Exceptions: VOA, Coliform, TOC, Olt and Grease, DRD/805 (water} DOC, U.I{g
"Bottom half of box is to list number of bottle
Project W4# 92421169
1
12
E
0
•
z
2 d U
i v Fr
Iv
x y
o Z. a a
m
p`. 2 0 0
u a uu
T uu .L2 N
d J. E
J d J J
E W t= o
0 0 8
N cr
3 v, 2
a a. 3- a
m m m m
Y
2
2
v
E
0
m
t?
a
DG9H-40 ml VOA HC1 (N/A)
VG9T-40 mL VOA Na2S2O3 OVA)
PM: AMB Due Date: 03/27/19
CLIENT: 92-Alcoa
DGEP-40 all VOA H3PO4 (WA}
z
N
te
0
7
0
7
Sample ID
Type of Preservative
p11 Adjustment Log for Preserved Samples
pH upon receipt
Date preservation adjusted
Time preservation
adjusted
Amount of Preservative
added
Lot if
Page 11 of 12

rm,
-p
o
72 On
—
49
r•f.
'
",:,
c,P,'
/5
).i';15
'1o&
t•V'iti
ite,t-,
''t'k''."
9::1.
''';''':!`
al`.:'5
.2' 4
#'1
• .,
4,
r, !
,
'
`i,itl-V
,s("e,''
rill
-41
ITE M #
tequested Due Date: .5.—rie2 /Projec-I #: i
Paco Proftie #: 7478-5
1".:aerari'..:ReiiiiestediAnalirais
:ompany: Alcoa-Badin Works (Entrironeering)
action A Section B
'equired Client Information: Required Project Information:
.
....4
1:;:2•••
.
I
• ' •
• ..
''''i;
it
:43
OutO05-05-NEW E65
MATRIX CODE
brInkIng Water OW
Wnter WT
Waste Water
Product
SAMPLE ID SoiVSolld
Oil SL
OL
One Character per box. Wipe WP
Mr Alt
(A-2, 0-9 I • -) other OT
Sample Ids must be unique Tome TS
1.4
IN ,1,
-Qits.)
••D t
t, c
1
q i
••.1
.
.....
a
Z-,
...,?,..•
Purchase Order #: r4gt""
Project Name: Parfait 005 (NEW). Scope 2: Surface Waler. 1;
'Copy To:.
Report To: Warden, Michael
1--....-----.
,
MATRIX CODE (see valid codes lo ioR)
C's1
SAMPLE TYPE (0.GRAB C=COMP)
L
....54
.
_.>
rri
ISIGNATURE of SAMPLER h I DATE Signed: 5i/f
-CP
72
ct
1 • ,
4 • ,
;-i
,
,
..g:
'il 1
I
i
M
COLLECTED
E
A
• a
ci
''"••••-...
,...._..
r:,
1).
m
a
I,
.. _...,
-4
[
SAMPLE TEMP AT COLLECTION
.
':ti•
'......^
;Mi
''''..%
# OPCONTAINERS
Pace Quote:
Pace Project Manager. angela.ttaioneacelabs.corn.
2
0.,.02.
4
T g)
.---
Unpreserved
Fill
Preservatives
-‹
•
0
‘.r4
.,';'•
/..V•
H2504
....
a
„..,.,..
HNO3
6
„
e
g.
."
".
HCI
ir;ittr
t.
..
, .
NaOH
•,..,
. ,
Ne28203
Melhanol
As 12
,irr
Other
..\:g
ggfi
'''*,k,ria19,0:10ri.St..41,.
qiIN:;:
',...1
:,...;
it
x
Total Cyanide by 9312
•-.
E‘'
*
x
:::::1;
•
It
VII,
kz.
....1
...t..
J
.
p.,
e
i'..,
,
14-N
1/4'.......
f .1
;,:•!,•
:: 7
•-1
.,•••-':'
4-,)
e• - •
-
,r•I
r'
,r4r
4eit
--)',
'-dt
'
,
•:.
liSt
.1%
I
_
,
• :.
'•:
•••
'•
, •
Page : a Of
TEMP In C
7,....
. ,.. :
Re5'dual Chlorine (WM
',,
•
Received on
Ice
.-.‹..
0
Cooler
"
Samples
Intact
ON
„........4
3.'0
il
,...
Page 12 of 12

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
March 17, 2019
Michael W. Worden
Environeering, Inc.
16100 Cairnway
Suite 320
Houston, TX 77084
RE: Project: Outfal 1005 137-266
Pace Project No.: 92421170
Dear Michael Worden:
Enclosed are the analytical results for sample(s) received by the laboratory on March 13, 2019. The
results relate only to the samples included in this report. Results reported herein conform to the most
current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where
applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Ncylit
Angela Baioni
[e-mail]
[phone]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 1 of 19

CERTIFICATIONS
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Asheville Certification Ds
2225 Riverside Drive, Asheville, NC 28804
Florida/NELAP Certification #: E87648
Massachusetts Certification #: M-NC030
North Carolina Drinking Water Certification #: 37712
North Carolina Wastewater Certification #: 40
South Carolina Certification #: 99030001
VirginiaNELAP Certification #: 460222
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 2 of 19

SAMPLE SUMMARY
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID
Sample ID
Matrix
Date Collected Date Received
92421170001
92421170002
92421170003
92421170004
92421170005
92421170006
92421170007
Out005-01-2.510
Out005-06-2.400
Out005-07-2.210
Out005-08-2.200
Out005-09-2.100
Out005-10-6.100
Out005-11.6.000
Water
Water
Water
Water
Water
Water
Water
03/13/19 11:30
03/13/19 11:55
03/13/19 12:10
03/13/19 12:20
03/13/19 12:35
03/13/19 13:05
03/13/19 13:20
03/13/19 15:34
03/13/19 15:34
03/13/19 15:34
03/13/19 15:34
03/13/19 15:34
03/13/19 15:34
03/13/19 15:34
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 3 of 19

SAMPLE ANALYTE COUNT
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID
Method
Analytes
Analysts Reported Laboratory
92421170001 0ut005-01-2.510
92421170002 0ut005-06-2.400
92421170003 0ut005-07-2.210
92421170004 0ut005-08-2.200
92421170005 0ut005-09-2.100
92421170006 0ut005-10-6.100
92421170007 0ut005-11.6.000
EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA9012B CJH1 1 PASI-A
EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA9012B CJH1 1 PASI-A
EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA9012B CJH1 1 PASI-A
EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA9012B CJH1 1 PASI-A
EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA9012B CJH1 1 PASI-A
EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA9012B CJH1 1 PASI-A
EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA9012B CJH1 1 PASI-A
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 4 of 19

ANALYTICAL RESULTS
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-01-2.510 Lab ID: 92421170001 Collected: 03/13/19 11:30 Received: 03/13/19 15:34 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 4.8 mg/L 0.20 0.10 2 03/15/19 00:20 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.13 mg/L 0.0080 0.0040 1 03/16/19 13:00 03/17/19 14:36 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 5 of 19

ANALYTICAL RESULTS
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-06-2.400 Lab ID: 92421170002 Collected: 03/13/19 11:55 Received: 03/13/19 15:34 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.3 mg/L 0.10 0.050 1 03/14/19 23:00 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.16 mg/L 0.0080 0.0040 1 03/16/19 13:00 03/17/19 14:37 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 6 of 19

ANALYTICAL RESULTS
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-07-2.210 Lab ID: 92421170003 Collected: 03/13/19 12:10 Received: 03/13/19 15:34 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.6 mg/L 0.10 0.050 1 03/14/19 23:16 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.14 mg/L 0.0080 0.0040 1 03/16/19 13:00 03/17/19 14:38 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 7 of 19

ANALYTICAL RESULTS
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-08-2.200 Lab ID: 92421170004 Collected: 03/13/19 12:20 Received: 03/13/19 15:34 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.6 mg/L 0.10 0.050 1 03/14/19 23:32 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.14 mg/L 0.0080 0.0040 1 03/16/19 13:00 03/17/19 14:41 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 8 of 19

ANALYTICAL RESULTS
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-09-2.100 Lab ID: 92421170005 Collected: 03/13/19 12:35 Received: 03/13/19 15:34 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.6 mg/L 0.10 0.050 1 03/14/19 23:48 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.13 mg/L 0.0080 0.0040 1 03/16/19 13:00 03/17/19 14:42 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 9 of 19

ANALYTICAL RESULTS
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-10-6.100 Lab ID: 92421170006 Collected: 03/13/19 13:05 Received: 03/13/19 15:34 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 0.28 mg/L 0.10 0.050 1 03/15/19 14:31 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide ND mg/L 0.0080 0.0040 1 03/16/19 13:00 03/17/19 14:42 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 10 of 19

ANALYTICAL RESULTS
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-11.6.000 Lab ID: 92421170007 Collected: 03/13/19 13:20 Received: 03/13/19 15:34 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 1.8 mg/L 0.10 0.050 1 03/15/19 14:46 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.049 mg/L 0.0080 0.0040 1 03/16/19 13:00 03/17/19 14:43 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 11 of 19

QUALITY CONTROL DATA
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 463269 Analysis Method: EPA 300.0 Rev 2.1 1993
QC Batch Method: EPA 300.0 Rev 2.1 1993 Analysis Description: 300.0 IC Anions
Associated Lab Samples: 92421170001, 92421170002, 92421170003, 92421170004, 92421170005
METHOD BLANK: 2520607 Matrix: Water
Associated Lab Samples: 92421170001, 92421170002, 92421170003, 92421170004, 92421170005
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Fluoride
mg/L ND 0.10 0.050 03/14/19 15:48
LABORATORY CONTROL SAMPLE: 2520608
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Fluoride mg/L 2.5 2.5 99 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2520609 2520610
MS MSD
92421097007 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L ND 2.5 2.5 1.8 1.8 71 72 90-110 2 10 M1
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2520611 2520612
MS MSD
92421154004 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L ND 2.5 2.5 2.5 2.5 98 99 90-110 1 10
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 12 of 19

QUALITY CONTROL DATA
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 463475 Analysis Method: EPA 300.0 Rev 2.1 1993
QC Batch Method: EPA 300.0 Rev 2.1 1993 Analysis Description: 300.0 IC Anions
Associated Lab Samples: 92421170006, 92421170007
METHOD BLANK: 2521481 Matrix: Water
Associated Lab Samples: 92421170006, 92421170007
Blank Reporting
Parameter Units Result Limit
MDL
Analyzed Qualifiers
Fluoride
mg/L ND 0.10 0.050 03/15/19 11:31
LABORATORY CONTROL SAMPLE: 2521482
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Fluoride mg/L 2.5 2.6 102 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2521483 2521484
MS MSD
92421391001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L ND 2.5 2.5 3.1 3.1 122 122 90-110 0 10 M1
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2521485 2521486
MS MSD
92421283001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride
mg/L 0.077J 2.5 2.5 2.5 2.5 97 98 90-110 1 10
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 13 of 19

QUALITY CONTROL DATA
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 463728 Analysis Method: EPA 9012B
QC Batch Method: EPA 9012E Analysis Description: EPA 9012B Cyanide
Associated Lab Samples: 92421170001, 92421170002, 92421170003, 92421170004, 92421170005, 92421170006, 92421170007
METHOD BLANK: 2522582 Matrix: Water
Associated Lab Samples: 92421170001, 92421170002, 92421170003, 92421170004, 92421170005, 92421170006, 92421170007
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Cyanide mg/L ND 0.0080 0.0040 03/17/19 14:32
LABORATORY CONTROL SAMPLE: 2522583
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Cyanide mg/L 0.1 0.11 105 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2522584 2522585
MS MSD
92421169001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Cyanide mg/L ND 0.1 0.1 0.061 0.091 58 87 75-125 39 20 M1,R1
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 14 of 19

QUALIFIERS
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean -Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
PASI-A Pace Analytical Services - Asheville
ANALYTE QUALIFIERS
M1
R1
Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
RPD value was outside control limits.
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 15 of 19

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: O u tfa 11005 137-266
Pace Project No.: 92421170
Lab ID Sample ID
QC Batch Method
Analytical
QC Batch Analytical Method Batch
92421170001 0ut005-01-2.510 EPA 300.0 Rev 2.1 1993 463269
92421170002 0ut005-06-2.400 EPA 300.0 Rev 2.1 1993 463269
92421170003 0ut005-07-2.210 EPA 300.0 Rev 2.1 1993 463269
92421170004 0ut005-08-2.200 EPA 300.0 Rev 2.1 1993 463269
92421170005 0ut005-09-2.100 EPA 300.0 Rev 2.1 1993 463269
92421170006 0ut005-10-6.100 EPA 300.0 Rev 2.1 1993 463475
92421170007 0ut005-11.6.000 EPA 300.0 Rev 2.1 1993 463475
92421170001 0ut005-01-2.510 EPA 9012B 463728 EPA 9012B 463766
92421170002 0ut005-06-2.400 EPA 9012B 463728 EPA 9012B 463766
92421170003 0ut005-07-2.210 EPA 9012B 463728 EPA 9012B 463766
92421170004 0ut005-08-2.200 EPA 9012B 463728 EPA 9012B 463766
92421170005 0ut005-09-2.100 EPA 9012B 463728 EPA 9012B 463766
92421170006 0ut005-10-6.100 EPA 9012B 463728 EPA 9012B 463766
92421170007 0ut005-11.6.000 EPA 9012B 463728 EPA 9012B 463766
REPORT OF LABORATORY ANALYSIS
Date: 03/17/2019 05:27 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 16 of 19

i
�r�G,p AAnn,�,11 x
jr .J �VV,4al�
i
Document Name:
Sample Condition Upon Receipt(SCUR)
Document No,:
FCAR•CS•033•Aev.O6
Document Revised: February 7, 2018
Page 1 of 2
issuing Authority:
Pace Carolinas Quality Office
Laboratory receiving samples:
Asheville ❑ Eden❑
54mple Condition
Upon Receipt_
Courf er:
0 Commercial
Custody. Seal Present?
Client Name:
Greenwood Ej
0Yes ❑No Seals Intact? ❑Yes
Packing Material; ❑Bubble Wrap ❑Bubble Bags
Thermometer;
❑1R Gun I0
Oe
Cooler Temp CO: r ? Correction Factor: Add/Subtract CC) -- .1
Cooler Temp Corrected ('C)•�, 3
funtersvMlie Raleigh Mechanicsville❑
Proleci
!lent
❑No
Type of Ice:
one ❑ Other
]Wet ❑81ue
USDA Regulated Soil CO N/A, water sample)
Did samples ar to in a quarantine zone within the United states: CA, NY, orSC (check maps)?
Yes
No
[None
WO#:92421170
MEHME111
92421170
Hate/lnitfa(sPerson Examining Contents:
Biological Tissue rozen?
Des ❑No N/A
Temp sh oui(d be above freezing to b'C
❑samples out of temp criteria. Samples on ice, cooling process
fras begun
bid samples originate from a foreign source (Inter ationally,
Including Hawaii and Puerto Rica)? Dies No
Comm ents/Discrepancy:
Chain of Custody Present?
Samples Arrived within Hold Time?
Short Hold Time Analysis (<72 hr.)? •
fes Do ❑N/A
gs ono ❑N/A
Yes No ❑N/A
Rush 'Turn Around Time Requested? ❑Yes
Sufficient Volume?
Correct Containers Used?
-Pace Containers Used?
Containers Intact?
Dissolved analysis: Samples Field Fftered?
Sample Labels Match COG?
-Includes Date/Time/JD/Analysis Matrix:N., , l
Headspace in VOA Vials i>5-6mm)?
Trip Blank Present?
Trip Blank Custody Sea Is Present?
No
❑Nn
ONo
❑No
❑No
❑No
❑No
EN/A
❑N/A
{lN/A
❑N/A
❑N/A
3,
gNN/A +:'
/A
❑Yes ❑No
❑Yas ❑No `22N/A
❑Yes No N/A
10.
11.
rieI D 1 Seguired? Ores ❑No
CLIENT NOTIFICATION/RESOLUTION
Lot ID of split conta in ors:
Person contacted;
Date/Tim e:
Project Manager SCURF Review:
Prninrt Mm, In ui•
bate:
12-1-167
Page 17 of 19

N
f.11c?C1)Vaf1Cc
Document Name:
Sample Conditron Upon Recei . t SCUR)
Document No.:
F-CAR-CS-033-Rev.06
Document Revised: February 7, 2018
Page 1of2
Issuing Authority:
Pace Carolinas Quar Office
*Check mark top half of box If pH and/or dechlIorination 1s
verified and within the acceptance range for preservation
samples.
Exceptions: VOA, Coliform, TOC, NI and Grease, DRO/8015 {water) DOC, Wig
"Bottom half of box is to list number of bottle
Project WO# 92421170
PM: AMB Due Date: 03/27/19
CLIENT: 92—Alcoa
O v
• U
z�' ° Zzz z E m
Z N ▪ 0
7 g • 2—
d
2 2' W Z S S b N y
N gW d a 0. N 4 n V m
0. d`i 0 O 4 O a 4 ca.
n n d M. N i7 • S. C7
• O x
_ u _u cr •{ a v u u u a u
m 0.( d
J J W. J n a E 4
E E. E a` •
i E E E E g � o
1- K
It
, a 3 3 a • N z pi U S 7
a0. n a 0 n
If a ,0- ▪ c ¢ d d al al m ,,a 0 co4l P3
S
4
0
co
0.
E
4
J
0
t9
a
pG9}1.40 mL VOA HCl (N/A)
-Z..
a
0
J
E
a
0 cn
}
4
z
4
0
E
0
DG9P-40 mL VOA H3PO4 tN/A)
4
z
0
1
4-
a
F
m
0
F-
men.
cri
N
1
BP3A-250 mL PS
0
1
13
N
C
0
d
E
E
0
0
4
i
10
0
0000
k°
1 I 1
-\\
pH Adjustment Log for Preserved Samples
Sample 1D
Type of Preservative
pH upon receipt
Date preservation adjusted
Time preservation
adiustad
Amount of Preservative
added
(mg
Page 18 of 19
o--. ,eeF....-..qr rher.' is .-nrrrnnanr' ffartina Nnrrh Carolina rromntUnrw samnlas. a cam, of this Form will ha tent to the North Carolina IEHNR Certification alike (Le.

C
0
0
u
e
o �
—
b
, t,c.,
o
1
F5
.r
4 ,L
''I.)
•4.as..:5
: R
S
.N
ma:
i.yyi'
'
�t ray:
r;=%..
0 Y } �- 4
..;�
z i•,'
ilA
r(
"
(%sa'
(N/A)
0
O
Cd
> 37
�"
4
pekes
Apoisna
pa'
-
enI
ua penleaoJ
N U{ dV131
'Sk ,Ya
No.) gUPclu0lmpISB21
SIGNATURE of SAMPLER: DATE Signed: ,)/ 5/ J q
PRINT Name of SAMPLER: itt
I A
1
Fll a
....
q
R
U
d
a
0
O'
a
Pace Project Manager: anoda.inaiani(a?pacelahs.coT,,
kZti
is
0'00£ AO epponld Ie101
x
x
X
x
X
X
X
tiF¢
' {'
L406 hq ep{ue,S3 IQIo1
x
X
X
X
x
X
X
�]yi
•
Jay1D
{oue4leVd
a
EOZSZeN
ca
HORN
�—
tiCJ
IaH
p0
❑
eoNH
''S
d
bOSZH
� .�
�1�f
c
penresaJduf
—
—
---
--
—
1 _
a
St1BHIV1N00 d0
(�
F.OIi031103LYeFtI3L31dV '
��-�
IRcpNRTo: Warden. Michael
Cnpy To: I
'Purchase Order*: 1
co
G
0
E
49
zr,
U
N
O
'€0
al
zLLI
III
.177,
Qn
w
U
y.
'ta
I
.
`--
(d Vi00.0 fl,d80.9) 3dA13ldl'IVS
C...3
�9
"
..
U
F:• �.
5 t
5
r S
S
5
5
5
a-
"V
ilia{ of capon Rim essl 3000 XIkILVW
U
v
O
VATRIX CODE
Drinking WienWienr DW
wacr wr
W.-re Wallis WW
Prod.: P
SAMPLE ID Sod/Solid SL
Oil OL
One Character per boy_ wipc WP
(A-Z,0-9l,-) Air AR
OCxr OT
Sample Ids must be unique nxsue rS
k=t
G
0
CND�
g
O
Q
hj
0
5
Q
N
N
5
O
Pi
R
5
O
Q
0
S
O
O
5
O
o
g
5
O
JUG#
il
v
W
c
o ca
3
a
cp
a
o
`N'
..•c
❑
o
_
E
aTA'
o
d
# Wail
'{
w ,,
lit
°�
; '1
}>?
5...
V
s..:.
} I
?fi
d;,s.
',i,',u-
Sj
.c3
t !
I
, .,
"a
Y'1
y- d
:
�, : ry
�CrerN,
`3Y'
�M1it ,7. ,
Page 1
of 19

Draft — Hydrogeological Conceptual Site Model Update — Badin Business Park
2019-03-27
EHS Support LLC

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
April 02, 2019
Michael W. Worden
Environeering, Inc.
16100 Cairnway
Suite 320
Houston, TX 77084
RE: Project: 137-266 Outfal 1005
Pace Project No.: 92423083
Dear Michael Worden:
Enclosed are the analytical results for sample(s) received by the laboratory on March 28, 2019. The
results relate only to the samples included in this report. Results reported herein conform to the most
current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where
applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Ncylit
Angela Baioni
[e-mail]
[phone]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 1 of 18

CERTIFICATIONS
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Asheville Certification Ds
2225 Riverside Drive, Asheville, NC 28804
Florida/NELAP Certification #: E87648
Massachusetts Certification #: M-NC030
North Carolina Drinking Water Certification #: 37712
North Carolina Wastewater Certification #: 40
South Carolina Certification #: 99030001
VirginiaNELAP Certification #: 460222
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 2 of 18

SAMPLE SUMMARY
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID Matrix Date Collected Date Received
92423083001 0ut005-01-2.510 Water 03/27/19 12:45 03/28/19 09:09
92423083002 0ut005-06-2.400 Water 03/27/19 13:20 03/28/19 09:09
92423083003 0ut005-07-2.210 Water 03/27/19 13:30 03/28/19 09:09
92423083004 0ut005-08-2.200 Water 03/27/19 13:40 03/28/19 09:09
92423083005 0ut005-09-2.100 Water 03/27/19 13:50 03/28/19 09:09
92423083006 0ut005-10-6.100 Water 03/27/19 14:05 03/28/19 09:09
92423083007 0ut005-11-6.000 Water 03/27/19 14:20 03/28/19 09:09
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 3 of 18

SAMPLE ANALYTE COUNT
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID
Method
Analytes
Analysts Reported Laboratory
92423083001 0ut005-01-2.510
92423083002 0ut005-06-2.400
92423083003 0ut005-07-2.210
92423083004 0ut005-08-2.200
92423083005 0ut005-09-2.100
92423083006 0ut005-10-6.100
92423083007 0ut005-11-6.000
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E NAL 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E NAL 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E NAL 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E NAL 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E NAL 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E NAL 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E NAL 1 PASI-A
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 4 of 18

ANALYTICAL RESULTS
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-01-2.510 Lab ID: 92423083001 Collected: 03/27/19 12:45 Received: 03/28/19 09:09 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 6.2 mg/L 0.30 0.15 3 03/31/19 02:10 16984-48-8 M1
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.44 mg/L 0.040 0.020 5 03/31/19 15:43 04/01/19 11:56 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 5 of 18

ANALYTICAL RESULTS
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-06-2.400 Lab ID: 92423083002 Collected: 03/27/19 13:20 Received: 03/28/19 09:09 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.6 mg/L 0.10 0.050 1 03/30/19 10:25 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.19 mg/L 0.0080 0.0040 1 03/31/19 15:43 04/01/19 11:47 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 6 of 18

ANALYTICAL RESULTS
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-07-2.210 Lab ID: 92423083003 Collected: 03/27/19 13:30 Received: 03/28/19 09:09 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.9 mg/L 0.10 0.050 1 03/30/19 10:40 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.15 mg/L 0.0080 0.0040 1 03/31/19 15:43 04/01/19 11:48 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 7 of 18

ANALYTICAL RESULTS
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-08-2.200 Lab ID: 92423083004 Collected: 03/27/19 13:40 Received: 03/28/19 09:09 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.7 mg/L 0.10 0.050 1 03/30/19 10:55 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.16 mg/L 0.0080 0.0040 1 03/31/19 15:43 04/01/19 11:49 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 8 of 18

ANALYTICAL RESULTS
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-09-2.100 Lab ID: 92423083005 Collected: 03/27/19 13:50 Received: 03/28/19 09:09 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.8 mg/L 0.10 0.050 1 03/30/19 11:10 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.15 mg/L 0.0080 0.0040 1 03/31/19 15:43 04/01/19 11:49 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 9 of 18

ANALYTICAL RESULTS
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-10-6.100 Lab ID: 92423083006 Collected: 03/27/19 14:05 Received: 03/28/19 09:09 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 0.22 mg/L 0.10 0.050 1 03/30/19 12:10 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide ND mg/L 0.0080 0.0040 1 03/31/19 15:43 04/01/19 11:50 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 10 of 18

ANALYTICAL RESULTS
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-11-6.000 Lab ID: 92423083007 Collected: 03/27/19 14:20 Received: 03/28/19 09:09 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 2.1 mg/L 0.10 0.050 1 03/30/19 12:25 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.077 mg/L 0.0080 0.0040 1 03/31/19 15:43 04/01/19 11:53 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 11 of 18

QUALITY CONTROL DATA
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 466419 Analysis Method: EPA 300.0 Rev 2.1 1993
QC Batch Method: EPA 300.0 Rev 2.1 1993 Analysis Description: 300.0 IC Anions
Associated Lab Samples: 92423083001, 92423083002, 92423083003, 92423083004, 92423083005, 92423083006, 92423083007
METHOD BLANK: 2535267 Matrix: Water
Associated Lab Samples: 92423083001, 92423083002, 92423083003, 92423083004, 92423083005, 92423083006, 92423083007
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Fluoride
mg/L ND 0.10 0.050 03/30/19 09:10
LABORATORY CONTROL SAMPLE: 2535268
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Fluoride mg/L 2.5 2.3 94 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2535269 2535270
MS MSD
92423083001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L 6.2 2.5 2.5 7.8 7.8 64 63 90-110 0 10 M1
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2535271 2535272
MS MSD
92423313001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L ND 2.5 2.5 3.9 3.9 157 154 90-110 2 10 M1
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 12 of 18

QUALITY CONTROL DATA
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 466486 Analysis Method: EPA 9012B
QC Batch Method: EPA 9012E Analysis Description: EPA 9012B Cyanide
Associated Lab Samples: 92423083001, 92423083002, 92423083003, 92423083004, 92423083005, 92423083006, 92423083007
METHOD BLANK: 2535563 Matrix: Water
Associated Lab Samples: 92423083001, 92423083002, 92423083003, 92423083004, 92423083005, 92423083006, 92423083007
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Cyanide mg/L ND 0.0080 0.0040 04/01/19 11:42
LABORATORY CONTROL SAMPLE: 2535564
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Cyanide mg/L 0.1 0.10 102 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2535565 2535566
MS MSD
92423083001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Cyanide mg/L 0.44 0.1 0.1 0.53 0.53 96 89 75-125 1 20
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 13 of 18

QUALIFIERS
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean -Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
PASI-A Pace Analytical Services - Asheville
ANALYTE QUALIFIERS
M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 14 of 18

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: 137-266 Outfall 005
Pace Project No.: 92423083
Lab ID Sample ID
QC Batch Method
Analytical
QC Batch Analytical Method Batch
92423083001 0ut005-01-2.510 EPA 300.0 Rev 2.1 1993 466419
92423083002 0ut005-06-2.400 EPA 300.0 Rev 2.1 1993 466419
92423083003 0ut005-07-2.210 EPA 300.0 Rev 2.1 1993 466419
92423083004 0ut005-08-2.200 EPA 300.0 Rev 2.1 1993 466419
92423083005 0ut005-09-2.100 EPA 300.0 Rev 2.1 1993 466419
92423083006 0ut005-10-6.100 EPA 300.0 Rev 2.1 1993 466419
92423083007 0ut005-11-6.000 EPA 300.0 Rev 2.1 1993 466419
92423083001 0ut005-01-2.510 EPA 9012B 466486 EPA 9012B 466574
92423083002 0ut005-06-2.400 EPA 9012B 466486 EPA 9012B 466574
92423083003 0ut005-07-2.210 EPA 9012B 466486 EPA 9012B 466574
92423083004 0ut005-08-2.200 EPA 9012B 466486 EPA 9012B 466574
92423083005 0ut005-09-2.100 EPA 9012B 466486 EPA 9012B 466574
92423083006 0ut005-10-6.100 EPA 9012B 466486 EPA 9012B 466574
92423083007 0ut005-11-6.000 EPA 9012B 466486 EPA 9012B 466574
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 15 of 18

Laboratory receiving samples:
Asheville ❑ Eden❑
Sample (onciitinn..
Upon Receipt
Courier.
0 Commercial
Document Name:
Sample Condition Upon Receipt(SCUR)
Document No.;
F-CAR-CS-033-Rev.06
Document Revised: February 7, 2013
Page 1 of 2
Issuing Authority:
Face Carolinas quality Office
Greenwood 0 Huntersville❑ Raleigh Mechanicsvil)e❑
dio.otoniedg.ic oa adin _ . 1)(4 , WO# 6. 92423083
Project it
[Client I 1011111111111111111
83
92423©
DFed Ex CUPS
[]Pate,
❑US PS
°Other:,,,T
Cusfody, Seal Present?
De
VNo
Packing Material: ❑Bubble Wrap
Thermometer: Goo ID: i1 Too,
❑1Rf
Cooler Temp [°C):.S S. g- Correction Factor: Add/Subtract ('C)
Cooler Temp Corrected {'C)• $ '
Seals Intact? QYes ❑No
❑Bubble Bags None O' Other
Type of' Wet DBiue
d,1
USDA Regulated Soil (❑ N/A, watersempre)
Did samples ort inate in a quarantine zone within the United Slates: CA, NY, or Sc (check maps)?
■ Yes No
(((
Date/initials Person Examining Contents: V
6 1
DNone
Biological Tissue Frozen?
[]Yes ❑No f2N/A
Temp should be above freezing to 6°C
QSarnples out of temp crfterla, Samples on Ice, cooling process
has begun
Did samples originate from a Foreign source (Inte tonally,
Including Hawaii and Puerto Aka)? ❑Yes No
Comments/Discrepancy;
Chain of Custody Present?
g es
Dtro DN/A
5arnpies Arrived within Hold Time? .
/DNo DNA 2.
Short Hold Time Analysis (<72 hr.)? • DYes irNo DNA 3.
Rush [] TumAroundTime Requested? Yes 1[(/7No ON/A 4.
Sufficient Volume?
Correct Containers Used?
-Pace Containers Used?
Containers Intact?
Dissolved analysis: Samples Field Filtered?
tplYes ❑No DN/A
!-'.es
t'
ElNn .DN/A
DNo ❑N/A
2Yes DNo DN/A
Dyes DNa /A j S.
Sample Labels Match COC? ©Yes ❑No ❑N/A
-Includes Date/Time/ID/Analysis Matrix;`
Headspace in VOA Vials (>5-6mm)?
Trip Blank Present?
Trip Blank Custody Seals Present?
Dyes ❑No N/A 10.
Yes DNo /A 17..
ass ONO V&A
/SAAiPLC a15CftCPANCY r +a uata xegwredr Des GINo
Lot ID of spit containers:
CLIENT NOTIFICATION/RESOLI}TION
Person contacted:
Date/Time:
Project Manager SCURF Review;
Project Manager 5RF Review;
ilfflfb
1g1cl 6
Date:
!late:
Page 16 of 18

i itCl'1o4Itfif A
Document Name:
Sample Condition Upon Receipt(SCUR)
Document No.:
F-CAR-CS-033-Rev.06
*Check mark top half of box if pH and/or dechlorination is
verified and within the acceptance range for preservation
samples.
Exceptions: VOA, Conform, TOC, oil and Grease, ORO/BOiS (water) DOC, Li.Hg
**Bottom half of box is to list number of bottle
Document Revised: February 7, 2018
Pagel of 2
Issuing Authority:
Pace Carolinas Quality Office
Projects WO# 92423083
PM: AMB Due Date: 04/02/19
CLIENT: 92—Alcoa
V
z
9?]
1
u
..'6
7
u
a
J
E
6
w 359
u m
i i —
Z
N N V
m @ Z
`� m
.' c g
7 7 '
u u
g y"
a n. ad
J .J 0.
E E
ruf ri
3 3
co m m
O
ry
V
v
O
r
„
Y
a
E
of
m
9
2
M os
V
a ro
m u
O sC
2
_u
Yn
o. a
-1
E E
rvf
i N
m m
rygN
ra
h
a
x
0
n
z
a
J
E
i
cO
m
V
2
C
:�
ro
2
0,
y
E
v
3
u7.
V
>
f
.
Z
N
u
2
a.
C
.a
¢
;
3
¢
N
v
x
U
L.
it
E
°
,-
a
u
'
'v
u
a
C..
u
E
<
o
3
¢
rV
V
V
O
N
.c
w
�
a
_
N
v
a
o
N
2
`m
E
‹
`^
tit
m
a
z
0
z
E
E
4
E
a
q
m
g
a
4
2
z
¢
o
E•
q
S
rn
o
4
Z
m
Pt
in
Z
¢
a
pEp
Y
l-
4
2
Q
a
d
o
E
a
n
F.,(,-
Z
a
Q
`�_
>
E
q
o.
a
o
\..\\.,
y
2
\
it,L-
.
4
0„
\\ \\,
S
I
,.....
,
Ok
\
1
10k
\
\
g
IN
9111011
lijklik&
\
......._
---
ta,—...
...,
....,.,--.w
i
e �_
_
mo—
--
pH Adjustment Log for Preserved Samples
Sample. ID
Type of Preservative
pH upon receipt
bate presentation adfusted
The preservation
adfusted
Amount of Preservative
added
Lot it
l
Note: Wheneve there is a discrepancy affecting North Carolina compliance vamp es, a copy of this
Out of hold, incorrect preservative, out od temp. Ineerr act containers.
Page 17 of 18

7J -0
mca4miu-1 I 1441§1,,,4 71c- paci
Email: ILI iji..114.,
ComPooY: Pk.s-Sedin Works (Envimneerirra)
Address: 138 rui ..hitawuri DOa5 itsca. CA-1,2,4o424
1'4.
•" '
i71.v:.7iL
r1, •;•
C. --, •
L.-. `',L=
..2.,.6k
,
'i-lie11
1-''''.
.5.,,I.,,,..,,,.:.
f4.-L!,'
m
"-
ITEm #
i 1
-*
p,„...,,,j..
.,4-1,-.4fE
lich'i
.:S
':
rr, '
,i- •
ire
'kr)
°
b
8
°
g.,
-.
8
°
.
A;
8,
0
E
2
N
6
2
._..
i4
12
2
.._.
1.
0
.t•
L.:
MATRIX CODE
Drhtling Water OW
weter WT
Waste Weder
Product
SAMPLE ID 54i/Sad 5L
Ono Character per box. vAP• WP
AirAI
1A-2, 0-9 I .-)
sarnOe 1455 MUST be ...Igoe T.
.2.0,..
0
s A-Y
F 4.--
rl
....1
Report To: Worcien. Michael
Copy To:
0
.,...
MATRIX CODE (see valid codes to leii.)
4*
.
q..,
CsN
Z'N
CL%
V".
6—e.51.
SAMPLETYPE (a -GRAB C=COMP)
_i.
c)
--,
o
PRINT Name of SAMPLER: fl Cjidtpry...)
T.M;;
aii,
\
\
1
C
r........
—I
COLLECTED
§
i)°•.''
4C..
:74!"
V.,..
0
...;
C.
'
.—......—..
.....,,
-3?
,
rn
rn
Ith
'rch:
it
.kt
5.5'i
‘.......
X.
e
'.......
..0
F-N
1......,
1"
........ ...........0.
•,,-
Cr'''''4
77,...:„.
r.4.6\
....
rrl
0
SAMPLE7EMR AT OOLLECTM
:4-
.-
(-1
(
1--)
r-3
ra
iNi
# OF CONTAINERS
Cth
'),
hmh+.
h-...
h.
.....
-...
-•
••••••••
Unproterved
Preservatives
7 3
izi •ii.
2 0
.
1
.7,si h
''hikr
:k '''
H2804
w a
5
E
''ed.,Zhh
HNO3
R
h:h""e'•:'.
'7•4::
IA
NCI
in
5,
g
g
;441
NI einem!
Mar
g-
'Lvli
't TN
..,
•-.'..;
412-
........
(filA,,,P—!ilY--0-0•3.:2-eie''''F'':
Y.,,f6t.',....
.....,
)(
X
x
X
X
X
9012 OVA Cyanide)
...:
13
X
X
X
X
X
X
X
300 DiTela1 Fluoride)
iv . ' •
*
• .
1.;'..:.'l
tgt-::
,.,a,
\A
!,•...C‘
,,,,17,!"'..
-14
4,
....,...
."Cl
0
;-:'
...-C:
;s:
r,•:.
Sj
P:
TEMP In O
to.
lie.
y
',./.
R eskluel Chlorine MN)
a
Received n
i Gil
raw
.......c
,i-Erl•-,."
?Jtg
-.., .i. k
,-...(--,
,
2
GL.L5tp,-.ty
Sealed
Cooler
(Y.IN)
..._
<
Y.8,
,:z4
' •N
46
,'-i.i:
&
\ j
(i
C'
J
\
3'
0
C''
,_,
i
k\-)
C '
6‘jc)
,
.
Berlekta
Intact
(YiN)
......e..
,1\ ..
...
j j
s,..,
___
.
N.L../`.1
• .L.'
IQ
F
g,
a
2
7 g
g
1
0
9
g o
2
b
,„
2- C
0
a) —I
m
§ >
C
8
6- X
g
sl
c
.
U)
!I/
0
cr
c
8 a
3
0.
Page 18 of 18

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
April 02, 2019
Michael W. Worden
Environeering, Inc.
16100 Cairnway
Suite 320
Houston, TX 77084
RE: Project: 137-266 Outfall 005 (New)
Pace Project No.: 92423087
Dear Michael Worden:
Enclosed are the analytical results for sample(s) received by the laboratory on March 28, 2019. The
results relate only to the samples included in this report. Results reported herein conform to the most
current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where
applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Ncylit
Angela Baioni
[e-mail]
[phone]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 1 of 12

CERTIFICATIONS
Project: 137-266 Outfall 005 (New)
Pace Project No.: 92423087
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Asheville Certification Ds
2225 Riverside Drive, Asheville, NC 28804
Florida/NELAP Certification #: E87648
Massachusetts Certification #: M-NC030
North Carolina Drinking Water Certification #: 37712
North Carolina Wastewater Certification #: 40
South Carolina Certification #: 99030001
VirginiaNELAP Certification #: 460222
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 2 of 12

SAMPLE SUMMARY
Project: 137-266 Outfall 005 (New)
Pace Project No.: 92423087
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID Matrix Date Collected Date Received
92423087001 0ut005-05-NEW E65
Water 03/27/19 13:05 03/28/19 09:09
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 3 of 12

SAMPLE ANALYTE COUNT
Project: 137-266 Outfall 005 (New)
Pace Project No.: 92423087
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID
Method
Analytes
Analysts Reported Laboratory
92423087001 Out005-05-NEW E65 EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA 9012E NAL 1 PASI-A
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 4 of 12

ANALYTICAL RESULTS
Project: 137-266 Outfall 005 (New)
Pace Project No.: 92423087
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-05-NEW E65 Lab ID: 92423087001 Collected: 03/27/19 13:05 Received: 03/28/19 09:09 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 4.0 mg/L 0.10 0.050 1 03/30/19 12:55 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide ND mg/L 0.0080 0.0040 1 03/31/19 15:43 04/01/19 11:55 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 5 of 12

QUALITY CONTROL DATA
Project: 137-266 Outfall 005 (New)
Pace Project No.: 92423087
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 466419 Analysis Method: EPA 300.0 Rev 2.1 1993
QC Batch Method: EPA 300.0 Rev 2.1 1993 Analysis Description: 300.0 IC Anions
Associated Lab Samples: 92423087001
METHOD BLANK: 2535267 Matrix: Water
Associated Lab Samples: 92423087001
Blank Reporting
Parameter Units Result Limit
MDL
Analyzed Qualifiers
Fluoride
mg/L ND 0.10 0.050 03/30/19 09:10
LABORATORY CONTROL SAMPLE: 2535268
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Fluoride mg/L 2.5 2.3 94 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2535269 2535270
MS MSD
92423083001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L 6.2 2.5 2.5 7.8 7.8 64 63 90-110 0 10 M1
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2535271 2535272
MS MSD
92423313001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L ND 2.5 2.5 3.9 3.9 157 154 90-110 2 10 M1
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 6 of 12

QUALITY CONTROL DATA
Project: 137-266 Outfall 005 (New)
Pace Project No.: 92423087
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 466486 Analysis Method: EPA 9012B
QC Batch Method: EPA 9012E Analysis Description: EPA 9012B Cyanide
Associated Lab Samples: 92423087001
METHOD BLANK: 2535563 Matrix: Water
Associated Lab Samples: 92423087001
Blank Reporting
Parameter Units Result Limit
MDL
Analyzed Qualifiers
Cyanide mg/L ND 0.0080 0.0040 04/01/19 11:42
LABORATORY CONTROL SAMPLE: 2535564
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Cyanide mg/L 0.1 0.10 102 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2535565 2535566
MS MSD
92423083001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Cyanide mg/L 0.44 0.1 0.1 0.53 0.53 96 89 75-125 1 20
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 7 of 12

QUALIFIERS
Project: 137-266 Outfall 005 (New)
Pace Project No.: 92423087
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean -Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
PASI-A Pace Analytical Services - Asheville
ANALYTE QUALIFIERS
M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 8 of 12

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: 137-266 Outfall 005 (New)
Pace Project No.: 92423087
Lab ID
Sample ID QC Batch Method
Analytical
QC Batch Analytical Method Batch
92423087001 0ut005-05-NEW E65 EPA 300.0 Rev 2.1 1993 466419
92423087001 0ut005-05-NEW E65 EPA 9012B 466486 EPA 9012B 466574
REPORT OF LABORATORY ANALYSIS
Date: 04/02/2019 10:22 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 9 of 12

1 /HceAi ca/
Document Name:
Sam le Condition Upon Recelpt(SCURJ
Document No.:
F-CAR-CS-033-Rev.06
Document Revised: February 7, 2018
Pagel of2
• issuing Authority:
Pace Carolinas Quality Office
Laboratory receiving samples:
Asheville ❑ Eden❑
Courier:
0 Commercial
art UM;
;
Greenwood ❑ Huntersviiie ❑ Raleigh[7] Mechanicsville❑
rks......
Project #:
❑Fed Ex ['UPS ❑USPS
[Pace
❑other:_
❑Client
Custody Seal Present? ['Yes •
Packing Material: ❑Bubble Wrap
IR Gun ID
Dof (Too s'
JR
Thermometer
Seals Intact? ❑Yes ❑Na
WOft:92423067
II I III III I II I II IIII III
pate/Inirais Person Examining Contents: VL•
ItA
['Bubble Bags 4Nane ❑' Other
Type of Ice: ['Wet ❑Blue ❑None
Cooler Temp (4C): Comedian Factor, Add/Subtract ('C) 0 `
Cooler Temp Corrected NJ:, 1/4/' 7
USDA Regulated Soil (0 N/A, water sampie)
Dld sarnpies origi .te Ina quarantine zone within the United States: CA, NY, or SC (check maps)?
Yes 1 o
Biological Tisst�e rozen?
❑Yes ❑No N/A
Temp should he above freezing to 6°C
QSamples out of temp criteria. Samples an ice, coating process
has begun
Did samples originate from a roreIgn source (in tionally,
including Hawaii arc! Puerto Rico)? j]Yes o
Comments/Discrepancy: (((
Chain of Custody Present?
Samples Arrived within Hold Time?
VYes ❑No ON/A
No ©N/A
Short Hold Time Analysis (<72 hr.)7 -
©Y
No ❑N/A
3.
Rush Turn Around Time Requested?
Sufficient Volume?
Correct Containers Used?
-Pace Containers Used?
Containers Intact?
Dissolved analysis: Samples Field Filtered?
Sample labels Match CDC?
❑Yes No ON/A
Yes ❑Na DN/A
Yes
❑Yes
'Yrs
-Includes Date/Tlme/iD/Analysis Matrix
Headspace in VOAViais (>5-5mm)?
Trip Blank Present?
Trip blank Custody Seals Present?
DYes
❑Yes
❑Yes
DNo •❑N/A
❑N❑ ❑N/A
ONO ❑N/A
❑No N/A
❑No N/A
Oslo m /A
❑No !/A
❑No /N/A
5.
8.
10.
11.
Fie
Lot ID of split containers:
CLIENT NOTIFICATION/RESOLUTION
Person contacted:
Project Manager SCURF Review:
Project IVEsnager SRF Review:
Datefilme:
Date:
Date:
- a� 1c1
Page 10 of 12

i
/Ir2P,A1 ytfair
Dacumerrt Name:
Sample Condition Upon Recetpt(5CUR)
Document No.:
F-CAR-CS-033-Rev.05
*Check mark top half of box If pH and/or dechlorinatfon is Protect #
verified and within the acceptance range for preservation
samples.
Exceptions: VOA, Coliform, 7OC Oil and Grease, ORO/6015 (water) DOC, LLHg
**Bottom half of box is to list number of bottle
Document Revised: February 7, 2018
Page l of 2
Issuing Authority:
Pace Carolinas Quality Office
WV#:92423087
PM: AMB Due Date: 04/02/19
CLIENT: 92—Alcoa
L
1
2
3
4
5 \
b \
7
4
Sample ID
Z
a
a.
CEP
N
\\N
Type of Preservative
N
er Unpreserved (N/A) {CI-)
AG115-1 liter
AG1H-1 liter Amber HCI (pri a 2)
AG3U-2s0 mL Amber Unpreserved (N/A) (CI-}
DG4H-40 mL VOA FiC( (N/A)
z
G
0
E
t4
DG9P-40 mL VOA H3PD4 (N/A)
pH Adjustment Log for Preserved Samples
pH upon receipt
\\\,
Date preservation adf usted
The praservatlon
adjusted
VOA( (6 vials per ktt}-5035 kit (N/A)
t7
a
M
to
SP57.I25 mt. Sterile Plastic (N/A — lab)
SPIT--250 mL Sterile Plastic (N/A — Sab)
BP3A-250 mLPIastic MI-12)25O4 t3.3-9.7)
AG3U100 mLAmber Uppreserved vials (N/A)
VS13U-20 mLSdntll3atlan vials {N/A)
DGSU-a0 mLAmber LInpreservcd vials {N/A)
\\
Amount of Preservative
added
Loaf
Note: Whenever there is a discrepancy affecting North Carolina compliance samples, a copy of this form writ be sent to the North Caroline DEHNR Cortiflcatfon Orrice (Le.
Out of Acid, Incorrect preservative, nut of temp, incorrect containers.
Page 11 of 12

r}
�
,
,Y
'k
�
��V
fi.15w51
lu
l}'Y
,
ITEM
.A
F 11i.
g•
8r
4 n
.s: C
Z
immix cow
Many Wahl CW
Water WT
wtedrwner w.v
Promrd
SAMPLE ID 60i "a
Oil a
One Character per box. Wipe WP
(A-Z. 11-9 f r) 1 nR
cnn. oc
Sample Ids mull be unique T. >•s
♦
74
T.
t
t ,
R
Purchase Order 4C:
Project Name: _ 137-266 Outfer! C05 (hit
O
q
1Report To: Women, Michact
sx
-.
MATRIX CODE (see valid codas to left)
f
III
■�■�.■■
(%
SAMPLETYPE
(6=ORA9 C.COMP)
og
ISIGNATURE of SAMPLER: e 1 DATE Signed: e3
PRINT Nome of SAMPLER- -M ,
tIUIHllh11I
COLLECTED
m
z
•
��
.=Sr
IIIIliIRUnPressrved
m
(s,,,
CTI
SAMPLE TEMP AT GOLiEON
--
p• n
#OF CONTAINERS
S
J,
>
Mom■
2 0
q
a
z
4IIUII1IUUIU4
,
:: ;.
.
MN
NI
©
NeOH
(1)VI ,
tir�
.■..■.■.■.
III
■
�
MBlhnnol
aver
g.
Maiyses T6st -g?
WN�4
e:
,�
9012 (Total Cyanide)
i
g
'
' J
300,0 (Total Fluoride)
"Ell
11
II
IIII
WV
tg
NNE
iiIFJpIUU1uuuIIU
y,
f
A,
TEMP in C
_
Residua! Chlorine (YM}
Received on
Ica
(YIN)
�)
��
-.>•_.
,>F.�
i
0 �sg.:
ox
�
ei
custody
CooleSealer
Cooler
PM
t
o ?
�t J -
r
_ �,'-'
. , :
!- , •;sty
•.'
Samples
Intact
(YM)
=: t�
: a1:
c G
,
4 %'F
2
a
Page 12 of 12

Draft — Hydrogeological Conceptual Site Model Update — Badin Business Park
2019-05-06
EHS Support LLC

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
May 09, 2019
Michael W. Worden
Environeering, Inc.
16100 Cairnway
Suite 320
Houston, TX 77084
RE: Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Dear Michael Worden:
Enclosed are the analytical results for sample(s) received by the laboratory on May 07, 2019. The
results relate only to the samples included in this report. Results reported herein conform to the most
current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual, where
applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Ncylit
Angela Baioni
[e-mail]
[phone]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 1 of 18

CERTIFICATIONS
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Asheville Certification Ds
2225 Riverside Drive, Asheville, NC 28804
Florida/NELAP Certification #: E87648
Massachusetts Certification #: M-NC030
North Carolina Drinking Water Certification #: 37712
North Carolina Wastewater Certification #: 40
South Carolina Certification #: 99030001
VirginiaNELAP Certification #: 460222
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 2 of 18

SAMPLE SUMMARY
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID Matrix Date Collected Date Received
92428053001 OUT005-01-2.510 Water 05/06/19 11:45 05/07/19 09:53
92428053002 OUT005-06-2.400 Water 05/06/19 13:00 05/07/19 09:53
92428053003 OUT005-07-2.210 Water 05/06/19 13:10 05/07/19 09:53
92428053004 OUT005-08-2.200 Water 05/06/19 13:20 05/07/19 09:53
92428053005 OUT005-09-2.100 Water 05/06/19 13:50 05/07/19 09:53
92428053006 OUT005-10-6.100 Water 05/06/19 14:00 05/07/19 09:53
92428053007 OUT005-11-6.000 Water 05/06/19 14:30 05/07/19 09:53
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 3 of 18

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
SAMPLE ANALYTE COUNT
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Lab ID Sample ID
Method
Analytes
Analysts Reported Laboratory
92428053001 OUT005-01-2.510 EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA 9012E KDF1 1 PASI-A
92428053002 OUT005-06-2.400 EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA 9012E KDF1 1 PASI-A
92428053003 OUT005-07-2.210 EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA 9012E KDF1 1 PASI-A
92428053004 OUT005-08-2.200 EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA 9012E KDF1 1 PASI-A
92428053005 OUT005-09-2.100 EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA 9012E KDF1 1 PASI-A
92428053006 OUT005-10-6.100 EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA 9012E KDF1 1 PASI-A
92428053007 OUT005-11-6.000 EPA 300.0 Rev 2.1 1993 CDC 1 PASI-A
EPA 9012E KDF1 1 PASI-A
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 4 of 18

ANALYTICAL RESULTS
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: OUT005-01-2.510 Lab ID: 92428053001 Collected: 05/06/19 11:45 Received: 05/07/19 09:53 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 5.5 mg/L 0.20 0.10 2 05/09/19 03:19 16984-48-8 M1
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.28 mg/L 0.040 0.020 5 05/09/19 10:45 05/09/19 16:33 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 5 of 18

ANALYTICAL RESULTS
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: OUT005-06-2.400 Lab ID: 92428053002 Collected: 05/06/19 13:00 Received: 05/07/19 09:53 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.7 mg/L 0.10 0.050 1 05/08/19 20:16 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.11 mg/L 0.0080 0.0040 1 05/09/19 10:45 05/09/19 16:21 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 6 of 18

ANALYTICAL RESULTS
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: OUT005-07-2.210 Lab ID: 92428053003 Collected: 05/06/19 13:10 Received: 05/07/19 09:53 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 4.1 mg/L 0.10 0.050 1 05/08/19 20:31 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.044 mg/L 0.0080 0.0040 1 05/09/19 10:45 05/09/19 16:24 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 7 of 18

ANALYTICAL RESULTS
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: OUT005-08-2.200 Lab ID: 92428053004 Collected: 05/06/19 13:20 Received: 05/07/19 09:53 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 4.7 mg/L 0.20 0.10 2 05/09/19 04:07 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.038 mg/L 0.0080 0.0040 1 05/09/19 10:45 05/09/19 16:25 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 8 of 18

ANALYTICAL RESULTS
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: OUT005-09-2.100 Lab ID: 92428053005 Collected: 05/06/19 13:50 Received: 05/07/19 09:53 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 4.4 mg/L 0.10 0.050 1 05/08/19 21:01 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.042 mg/L 0.0080 0.0040 1 05/09/19 10:45 05/09/19 16:27 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 9 of 18

ANALYTICAL RESULTS
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: OUT005-10-6.100 Lab ID: 92428053006 Collected: 05/06/19 14:00 Received: 05/07/19 09:53 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 0.50 mg/L 0.10 0.050 1 05/08/19 21:16 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide ND mg/L 0.0080 0.0040 1 05/09/19 10:45 05/09/19 16:28 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 10 of 18

ANALYTICAL RESULTS
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: OUT005-11-6.000 Lab ID: 92428053007 Collected: 05/06/19 14:30 Received: 05/07/19 09:53 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 2.7 mg/L 0.10 0.050 1 05/08/19 21:31 16984-48-8
9012B Cyanide, Total Analytical Method: EPA 9012E Preparation Method: EPA 9012E
Cyanide 0.041 mg/L 0.0080 0.0040 1 05/09/19 10:45 05/09/19 16:29 57-12-5
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 11 of 18

QUALITY CONTROL DATA
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 473978 Analysis Method: EPA 300.0 Rev 2.1 1993
QC Batch Method: EPA 300.0 Rev 2.1 1993 Analysis Description: 300.0 IC Anions
Associated Lab Samples: 92428053001, 92428053002, 92428053003, 92428053004, 92428053005, 92428053006, 92428053007
METHOD BLANK: 2569872 Matrix: Water
Associated Lab Samples: 92428053001, 92428053002, 92428053003, 92428053004, 92428053005, 92428053006, 92428053007
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Fluoride
mg/L ND 0.10 0.050 05/08/19 18:31
LABORATORY CONTROL SAMPLE: 2569873
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Fluoride mg/L 2.5 2.5 101 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2569874 2569875
MS MSD
92428053001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L 5.5 2.5 2.5 7.6 7.6 85 86 90-110 1 10 M1
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2569876 2569877
MS MSD
92428054004 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L 8.3 2.5 2.5 10.3 10.5 79 86 90-110 2 10 M1
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 12 of 18

QUALITY CONTROL DATA
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 473935 Analysis Method: EPA 9012B
QC Batch Method: EPA 9012E Analysis Description: EPA 9012B Cyanide
Associated Lab Samples: 92428053001, 92428053002, 92428053003, 92428053004, 92428053005, 92428053006, 92428053007
METHOD BLANK: 2569635 Matrix: Water
Associated Lab Samples: 92428053001, 92428053002, 92428053003, 92428053004, 92428053005, 92428053006, 92428053007
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Cyanide mg/L ND 0.0080 0.0040 05/09/19 16:17
LABORATORY CONTROL SAMPLE: 2569636
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Cyanide mg/L 0.1 0.099 99 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2569637 2569638
MS MSD
92428053001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Cyanide mg/L 0.28 0.1 0.1 0.37 0.37 95 90 75-125 1 20
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2569639 2569640
MS MSD
92428053002 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Cyanide mg/L 0.11 0.1 0.1 0.19 0.19 81 84 75-125 1 20
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 13 of 18

QUALIFIERS
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean -Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
PASI-A Pace Analytical Services - Asheville
ANALYTE QUALIFIERS
M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 14 of 18

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: 137-265 OUTFALL 005/SURFACE WT
Pace Project No.: 92428053
Lab ID Sample ID
Analytical
QC Batch Method QC Batch Analytical Method Batch
92428053001 OUT005-01-2.510 EPA 300.0 Rev 2.1 1993 473978
92428053002 OUT005-06-2.400 EPA 300.0 Rev 2.1 1993 473978
92428053003 OUT005-07-2.210 EPA 300.0 Rev 2.1 1993 473978
92428053004 OUT005-08-2.200 EPA 300.0 Rev 2.1 1993 473978
92428053005 OUT005-09-2.100 EPA 300.0 Rev 2.1 1993 473978
92428053006 OUT005-10-6.100 EPA 300.0 Rev 2.1 1993 473978
92428053007 OUT005-11-6.000 EPA 300.0 Rev 2.1 1993 473978
92428053001 OUT005-01-2.510 EPA 9012B 473935 EPA 9012B 474272
92428053002 OUT005-06-2.400 EPA 9012B 473935 EPA 9012B 474272
92428053003 OUT005-07-2.210 EPA 9012B 473935 EPA 9012B 474272
92428053004 OUT005-08-2.200 EPA 9012B 473935 EPA 9012B 474272
92428053005 OUT005-09-2.100 EPA 9012B 473935 EPA 9012B 474272
92428053006 OUT005-10-6.100 EPA 9012B 473935 EPA 9012B 474272
92428053007 OUT005-11-6.000 EPA 9012B 473935 EPA 9012B 474272
REPORT OF LABORATORY ANALYSIS
Date: 05/09/2019 05:45 PM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 15 of 18

./.1::#12aceAnalye1car4
1 °
Document Name:
Sample Condition Upon Receipt{SCUR)
Document Revised: February 7, 2018
Page 1 of
Document No.:
F-CAR-CS-O33-Rev.06
Issuing Authority:
Pace Carolinas Quality Office
Laboratory receiving samples:
Asheville ❑ Eden❑ Greenwood ❑ Huntersville ❑ Raleigh Mechanicsville❑
Sample Condition
Upon Receipt
Courier.
❑ Commercial
Client Name:
GiUCG
❑Fed Ex
['Pace
\NHS
❑UPS ❑LISPS
❑Other:
Project; W0# • 92428053
Client
Custody Seaf Present? ❑Yes No Seals Intact? ❑Yes ❑No
Packing Material: :Bubble Wrap ❑Bubble Bags None ❑ Other
Thermometer: T��
❑IRGun ID•� ` Cooler Temp CC): 3 •'5 Correction Factor: Add/Subtract (°C) — 0 } 1
Cooler Ternp Corrected (°C)• '
USDA Regulated Soil (Q'N/A, water sample)
Did samples originate In a quarantine zone within the United States: CA, NY, or SC Echeck maps)?
nYes I-1No
Date/Initials Person t:xamining Contents:0 J J°
Type of Ice: let ❑Blue ❑None
Biological Tissue F en?
Des No /A
Temp should be above freezing to 6'C
❑Samples out of temp criteria. Samples on Ice, cooling process
has begun
Did samples originate from a foreign source {Internationally,
including Hawaii and Puerto Rico)? ❑Yes No
Comments/0iscrepa ncy:
Chain of Custody Present?
Is ONa ❑N/A
1.
Samples Arrived within Wald Time?
�es ❑N ❑N/A
2.
Short Hold Time Analysis (472 hr.)?
Des (ril ❑NIA
3.
Rush Tum Around Time Requested?
❑Yes No DN/A
4.
Sufficient Volume?
�s [No DNJA
5.
Correct Containers Used?
-Pace Containers Used?
iris
❑No DN/A
DNo ❑N/A
6.
Containers Intact?
eves ❑No ❑r.
7,
Dissolved analysis: Samples Field Filtered?
DiYes No N/A
8.
Sample Labels Match COC?
-Includes Date/time/ID/Analysis Matrix: \!
Yes DNo DN/A
9.
NI Y
Headspace in VOA Vials (>S-6mm)?
pees ❑No �/ N
10.
Trip ?lank Present?
Trip Blank Custody Seals Present?
❑Yes ❑No
Dyes ❑No LE/N/A
11.
COMMENTS/SAMPLE DISCREPANCY
Field Data Required? ['Yes ❑No
Lot ID of split containers:
CLIENT NOTIFICATION/RESOLUTION
Person contacted:
Date/Time:
Project Manager SCURF Review:
Project Manager SRF Review:
i ) ►1
)�711))
Date:
Date:
1'%
Page 16 of 16

2eA VICal^
Document Name:
Sample Condition Upon Receipt(SCUA)
Document Revised: February 7, 2018
Page 1 of 2
Document No.:
FCAR-CS-033-Rev.06
Issuing Authority:
Pace Carolinas Quality Office
*Check mark top half of box if pH and/or dechiorination is
verified and within the acceptance range for preservation
samples.
Exceptions: VOA, Coliform, TOC, Oil and Grease, DR0/8015 (water) DOC, LLHg
**Bottom half of box is to list number of bottle
Project 1p# : 92428053
PM: AMB Due Date: 05/10/19
CLIENT: 92-Alcoa
AG15-I liter Amber 112504 (pH <2)
AG3S-250 mL Amber Fl2SO4 (pH < 2)
AG3A(D63A)-250 mL Amber NH4CI (N/A)(CI-)
DG9H-40 mL VOA HCI (N/A)
VG9T-40 mL VOA Na7S203 (N/A)
VGSU-40 mL VOA Unp (N/A)
DG9P-40 mL VOA H3PO4 (N/A)
VOAI( (e vials per kit)-so3s kit (N/A)
V/GK (3 vials per kit) VPH/Gas kit (N/A)
SP5T-125 mL Sterile Plastic (N/A —lab)
SP2T-250 mL Sterile Plastic (N/A — lab)
BP3A-250 mt. Plastic (N1-12)2SO1 (9.3-9.7)
'
6
a
G
,-
E
_,
E
`5
'
6
0
Q
a
a
's
0
-G
4
E
o
N
6
w
rDG9U-40 mL Amber Unpreserved vials (N/A)
A'
!'
Sr
a
.
a
w ill
cma
u
v�
N
F.
E
trl
M
3
O.
z
d
cu
C
=
m
T.
E
0
yN7
N
j
CO
z
w
8
F.
C
t=.r
m
a
E
0
7
P.
,
Z
y
2
a
I.
m
F.
`v
�
1.i
J
Lao
U
—
v
a
0
m
V
8
i
E
N
H
Y1
P.
v ry
9,
m
0
=
tf,N
a
E
oo
N
N
Z
P.
O
z
°�
m cu
a
Q
N
u
o.
E
to
N
r�
N
0
V
F.
n
a
G
Z
V
ro
a
E
of
4
rui
•
00
w
a.
C
7
rd
-
v
y
as
E
v
$in
W
l�
Q
u
C
t
w
,-
Z
E
Q
,
_
(�
Q
v
2
.-.
Z
e
Q
8
_
,-1
Q
Z
-
8,
n
c
,-
n
E
-J
of
N
m
S
1
t-\\\N>
j:
\
-
\\\\\‘'
2
1
3\\I
\
4
,
11�
\\
5
\
4
_
6
\.11
\\
\
_
_
7
l
1
\
8
�
9
10\
11 \
\\
12 \
\ \
..
\\
pH Adjustment Log for Preserved Samples
Sample ID
Type -of -Preservative—
—pH-upon-recelpt
D
Date -preservation -adjusted—
Tme.preseo ation
Amount of Preservative
Lot #
adjusted
added
l
Note: Wheneve there is a discrepancy affecting North Carolina compliance samp es, a copy of this form will be se
Out of hold, Incorrect preservative, out of temp, incorrect containers.
Page 17 of 18

47
,i4
cf)
TEMP in C
Re etved
Ice
NM)
Custody
Sealed
Cooler
IY)N)
Samples
intact
.�4
z
}
r
0
ITEM #
MATRIX CODE (see yard codes to la)
SAMPLE TYPE (0.0RA9 GCOM°)
m
SAMPLE TEMP
0 OF CONTAIN
Unpreserved
H2504
HNO3
HC1
NaOH
Na2S203
Methanol
en
d31a31100.
z
0
T COLLECTION
25
Other
'.::Analyses,"FTest
sanneAJOS@Jd
:YIN_`
x
x
x
x
x
x
x
9012 (Total Cyanide)
300,0 (Total Fivaride)
72,
—1.441
ro
m
L•
m
3
a
c
2
Page 18 of 18

Draft — Hydrogeological Conceptual Site Model Update — Badin Business Park
2019-09-19
EHS Support LLC

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
October 02, 2019
Michael W. Worden
Environeering, Inc.
16100 Cairnway
Suite 320
Houston, TX 77084
RE: Project: Upstream 005, 137-266
Pace Project No.: 92446441
Dear Michael Worden:
Enclosed are the analytical results for sample(s) received by the laboratory on September 20, 2019.
The results relate only to the samples included in this report. Results reported herein conform to the
most current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual,
where applicable, unless otherwise noted in the body of the report.
Some analyses have been subcontracted outside of the Pace Network. The subcontracted
laboratory report has been attached.
A revised report is being submitted on 10/2/19 to include an updated subcontract lab report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
any .aL 4'1,
Angela Baioni
[e-mail]
[phone]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 1 of 35

CERTIFICATIONS
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Atlanta Certification IDs
110 Technology Parkway Peachtree Corners, GA 30092
Florida DOH Certification #: E87315
Georgia DW Inorganics Certification #: 812
Georgia DW Microbiology Certification #: 812
Ormond Beach Certification IDs
8 East Tower Circle, Ormond Beach, FL 32174
Alaska DEC- CS/UST/LUST
Alabama Certification #: 41320
Arizona Certification# AZ0819
Colorado Certification: FL NELAC Reciprocity
Connecticut Certification #: PH-0216
Delaware Certification: FL NELAC Reciprocity
Florida Certification #: E83079
Georgia Certification #: 955
Guam Certification: FL NELAC Reciprocity
Hawaii Certification: FL NELAC Reciprocity
Illinois Certification #: 200068
Indiana Certification: FL NELAC Reciprocity
Kansas Certification #: E-10383
Kentucky Certification #: 90050
Louisiana Certification #: FL NELAC Reciprocity
Louisiana Environmental Certificate #: 05007
Maryland Certification: #346
Michigan Certification #: 9911
Mississippi Certification: FL NELAC Reciprocity
Asheville Certification IDs
2225 Riverside Drive, Asheville, NC 28804
Florida/NELAP Certification #: E87648
Massachusetts Certification #: M-NC030
North Carolina Drinking Water Certification #: 37712
North Carolina Certification #: 381
South Carolina Certification #: 98011001
Virginia Certification #: 460204
Missouri Certification #: 236
Montana Certification #: Cert 0074
Nebraska Certification: NE-OS-28-14
New Hampshire Certification #: 2958
New Jersey Certification #: FL022
New York Certification #: 11608
North Carolina Environmental Certificate #: 667
North Carolina Certification #: 12710
North Dakota Certification #: R-216
Oklahoma Certification #: D9947
Pennsylvania Certification #: 68-00547
Puerto Rico Certification #: FL01264
South Carolina Certification: #96042001
Tennessee Certification #: TN02974
Texas Certification: FL NELAC Reciprocity
US Virgin Islands Certification: FL NELAC Reciprocity
Virginia Environmental Certification #: 460165
West Virginia Certification #: 9962C
Wisconsin Certification #: 399079670
Wyoming (EPA Region 8): FL NELAC Reciprocity
North Carolina Wastewater Certification #: 40
South Carolina Certification #: 99030001
Virginia/VELAP Certification #: 460222
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 2 of 35

SAMPLE SUMMARY
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID
Sample ID
Matrix
Date Collected Date Received
92446441001
92446441002
92446441003
92446441004
92446441005
92446441006
Out005-05-NEW E65
Out005-06-2.400
Out005-07-2.210
Out005-08-2.200
Out005-11-6.000
Out005-13-2.050
Water
Water
Water
Water
Water
Water
09/19/19 10:30
09/19/19 11:10
09/19/19 11:50
09/19/19 12:15
09/19/19 13:45
09/19/19 13:20
09/20/19 10:23
09/20/19 10:23
09/20/19 10:23
09/20/19 10:23
09/20/19 10:23
09/20/19 10:23
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 3 of 35

SAMPLE ANALYTE COUNT
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID
Analytes
Method Analysts Reported Laboratory
92446441001 0ut005-05-NEW E65
92446441002 0ut005-06-2.400
92446441003 0ut005-07-2.210
92446441004 0ut005-08-2.200
92446441005 0ut005-11-6.000
92446441006 0ut005-13-2.050
SM 2320B-2011 ECH 1 PASI-A
SM 2540C-2011 NAL 1 PASI-A
EPA 9034 JAD 1 PASI-GA
EPA 9040C ECH 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA335.4 MH1 1 PASI-O
EPA 350.1 Rev 2.0 1993 GC 1 PASI-A
SM 2320B-2011 ECH 1 PASI-A
SM 2540C-2011 NAL 1 PASI-A
EPA 9034 JAD 1 PASI-GA
EPA 9040C ECH 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA335.4 MH1 1 PASI-O
EPA 350.1 Rev 2.0 1993 GC 1 PASI-A
SM 2320B-2011 ECH 1 PASI-A
SM 2540C-2011 NAL 1 PASI-A
EPA 9034 JAD 1 PASI-GA
EPA 9040C ECH 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA335.4 MH1 1 PASI-O
EPA 350.1 Rev 2.0 1993 GC 1 PASI-A
SM 2320B-2011 ECH 1 PASI-A
SM 2540C-2011 NAL 1 PASI-A
EPA 9034 JAD 1 PASI-GA
EPA 9040C ECH 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA335.4 MH1 1 PASI-O
EPA 350.1 Rev 2.0 1993 GC 1 PASI-A
SM 2320B-2011 ECH 1 PASI-A
SM 2540C-2011 NAL 1 PASI-A
EPA 9034 JAD 1 PASI-GA
EPA 9040C ECH 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA335.4 MH1 1 PASI-O
EPA 350.1 Rev 2.0 1993 GC 1 PASI-A
SM 2320B-2011 ECH 1 PASI-A
SM 2540C-2011 NAL 1 PASI-A
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 4 of 35

SAMPLE ANALYTE COUNT
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Lab ID Sample ID
Method
Analytes
Analysts Reported Laboratory
EPA 9034 JAD 1 PASI-GA
EPA 9040C ECH 1 PASI-A
EPA 300.0 Rev 2.1 1993 BRJ 1 PASI-A
EPA335.4 MH1 1 PASI-O
EPA 350.1 Rev 2.0 1993 GC 1 PASI-A
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 5 of 35

ANALYTICAL RESULTS
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-05-NEW E65 Lab ID: 92446441001 Collected: 09/19/19 10:30 Received: 09/20/19 10:23 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
2320B Alkalinity Analytical Method: SM 2320B-2011
Alkalinity, Total as CaCO3 129 mg/L 5.0 5.0 1 09/23/19 15:33
2540C Total Dissolved Solids Analytical Method: SM 2540C-2011
Total Dissolved Solids 164 mg/L 25.0 25.0 1 09/23/19 15:23
9034 Sulfide, Titration Analytical Method: EPA 9034 Preparation Method: EPA 9030A
Sulfide 1.3 mg/L 1.0 1.0 1 09/24/19 11:40 09/24/19 18:05 18496-25-8
9040 pH Analytical Method: EPA 9040C
pH at 25 Degrees C 7.8 Std. Units 0.10 0.10 1 09/25/19 15:50 H3
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 8.2 mg/L 0.30 0.15 3 09/22/19 06:29 16984-48-8 M1
335.4 Cyanide, Total Analytical Method: EPA 335.4 Preparation Method: EPA 335.4
Cyanide 0.0098J mg/L 0.010 0.0050 1 09/28/19 17:30 09/28/19 21:16 57-12-5
350.1 Ammonia Analytical Method: EPA 350.1 Rev 2.0 1993
Nitrogen, Ammonia 0.30 mg/L 0.10 0.070 1 09/26/19 19:06 7664-41-7
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 6 of 35

ANALYTICAL RESULTS
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-06-2.400 Lab ID: 92446441002 Collected: 09/19/19 11:10 Received: 09/20/19 10:23 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
2320B Alkalinity Analytical Method: SM 2320B-2011
Alkalinity, Total as CaCO3 53.6 mg/L 5.0 5.0 1 09/23/19 15:43
2540C Total Dissolved Solids Analytical Method: SM 2540C-2011
Total Dissolved Solids 157 mg/L 25.0 25.0 1 09/23/19 15:23
9034 Sulfide, Titration Analytical Method: EPA 9034 Preparation Method: EPA 9030A
Sulfide ND mg/L 1.0 1.0 1 09/24/19 11:40 09/24/19 18:14 18496-25-8
9040 pH Analytical Method: EPA 9040C
pH at 25 Degrees C 7.8 Std. Units 0.10 0.10 1 09/25/19 15:53 H3
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 2.6 mg/L 0.10 0.050 1 09/21/19 23:59 16984-48-8
335.4 Cyanide, Total Analytical Method: EPA 335.4 Preparation Method: EPA 335.4
Cyanide 0.013 mg/L 0.010 0.0050 1 09/28/19 17:30 09/28/19 21:17 57-12-5
350.1 Ammonia Analytical Method: EPA 350.1 Rev 2.0 1993
Nitrogen, Ammonia ND mg/L 0.10 0.070 1 09/26/19 19:08 7664-41-7
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 7 of 35

ANALYTICAL RESULTS
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-07-2.210 Lab ID: 92446441003 Collected: 09/19/19 11:50 Received: 09/20/19 10:23 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
2320B Alkalinity Analytical Method: SM 2320B-2011
Alkalinity, Total as CaCO3 58.4 mg/L 5.0 5.0 1 09/23/19 16:00
2540C Total Dissolved Solids Analytical Method: SM 2540C-2011
Total Dissolved Solids 199 mg/L 25.0 25.0 1 09/23/19 15:24
9034 Sulfide, Titration Analytical Method: EPA 9034 Preparation Method: EPA 9030A
Sulfide ND mg/L 1.0 1.0 1 09/24/19 11:40 09/24/19 18:19 18496-25-8
9040 pH Analytical Method: EPA 9040C
pH at 25 Degrees C 7.9 Std. Units 0.10 0.10 1 09/25/19 15:56 H3
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 3.5 mg/L 0.10 0.050 1 09/22/19 00:14 16984-48-8
335.4 Cyanide, Total Analytical Method: EPA 335.4 Preparation Method: EPA 335.4
Cyanide 0.0096J mg/L 0.010 0.0050 1 09/28/19 17:30 09/28/19 21:18 57-12-5
350.1 Ammonia Analytical Method: EPA 350.1 Rev 2.0 1993
Nitrogen, Ammonia ND mg/L 0.10 0.070 1 09/26/19 19:09 7664-41-7
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 8 of 35

ANALYTICAL RESULTS
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-08-2.200 Lab ID: 92446441004 Collected: 09/19/19 12:15 Received: 09/20/19 10:23 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
2320B Alkalinity Analytical Method: SM 2320B-2011
Alkalinity, Total as CaCO3 83.8 mg/L 5.0 5.0 1 09/23/19 16:07
2540C Total Dissolved Solids Analytical Method: SM 2540C-2011
Total Dissolved Solids 185 mg/L 25.0 25.0 1 09/23/19 15:24
9034 Sulfide, Titration Analytical Method: EPA 9034 Preparation Method: EPA 9030A
Sulfide ND mg/L 1.0 1.0 1 09/24/19 14:20 09/24/19 18:24 18496-25-8
9040 pH Analytical Method: EPA 9040C
pH at 25 Degrees C 8.5 Std. Units 0.10 0.10 1 09/25/19 15:58 H3
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 20.9 mg/L 0.80 0.40 8 09/22/19 07:11 16984-48-8
335.4 Cyanide, Total Analytical Method: EPA 335.4 Preparation Method: EPA 335.4
Cyanide 0.0052J mg/L 0.010 0.0050 1 09/28/19 17:30 09/28/19 21:19 57-12-5
350.1 Ammonia Analytical Method: EPA 350.1 Rev 2.0 1993
Nitrogen, Ammonia 0.38 mg/L 0.10 0.070 1 09/26/19 19:11 7664-41-7
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 9 of 35

ANALYTICAL RESULTS
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-11-6.000 Lab ID: 92446441005 Collected: 09/19/19 13:45 Received: 09/20/19 10:23 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
2320B Alkalinity Analytical Method: SM 2320B-2011
Alkalinity, Total as CaCO3 38.3 mg/L 5.0 5.0 1 09/23/19 16:14
2540C Total Dissolved Solids Analytical Method: SM 2540C-2011
Total Dissolved Solids 183 mg/L 25.0 25.0 1 09/23/19 15:24
9034 Sulfide, Titration Analytical Method: EPA 9034 Preparation Method: EPA 9030A
Sulfide ND mg/L 1.0 1.0 1 09/24/19 14:20 09/24/19 18:28 18496-25-8
9040 pH Analytical Method: EPA 9040C
pH at 25 Degrees C 7.5 Std. Units 0.10 0.10 1 09/25/19 16:12 H3
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 2.4 mg/L 0.10 0.050 1 09/22/19 00:42 16984-48-8
335.4 Cyanide, Total Analytical Method: EPA 335.4 Preparation Method: EPA 335.4
Cyanide 0.019 mg/L 0.010 0.0050 1 09/28/19 17:30 09/28/19 21:33 57-12-5
350.1 Ammonia Analytical Method: EPA 350.1 Rev 2.0 1993
Nitrogen, Ammonia ND mg/L 0.10 0.070 1 09/26/19 19:15 7664-41-7
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 10 of 35

ANALYTICAL RESULTS
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: Out005-13-2.050 Lab ID: 92446441006 Collected: 09/19/19 13:20 Received: 09/20/19 10:23 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
2320B Alkalinity Analytical Method: SM 2320B-2011
Alkalinity, Total as CaCO3 38.1 mg/L 5.0 5.0 1 09/23/19 16:20
2540C Total Dissolved Solids Analytical Method: SM 2540C-2011
Total Dissolved Solids 185 mg/L 25.0 25.0 1 09/23/19 15:24
9034 Sulfide, Titration Analytical Method: EPA 9034 Preparation Method: EPA 9030A
Sulfide ND mg/L 1.0 1.0 1 09/24/19 14:20 09/24/19 18:33 18496-25-8
9040 pH Analytical Method: EPA 9040C
pH at 25 Degrees C 7.1 Std. Units 0.10 0.10 1 09/27/19 10:53 D6,H3
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Fluoride 2.4 mg/L 0.10 0.050 1 09/22/19 00:57 16984-48-8
335.4 Cyanide, Total Analytical Method: EPA 335.4 Preparation Method: EPA 335.4
Cyanide 0.017 mg/L 0.010 0.0050 1 09/28/19 17:30 09/28/19 21:34 57-12-5
350.1 Ammonia Analytical Method: EPA 350.1 Rev 2.0 1993
Nitrogen, Ammonia ND mg/L 0.10 0.070 1 09/26/19 19:16 7664-41-7
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 11 of 35

QUALITY CONTROL DATA
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 499282 Analysis Method: SM 2320B-2011
QC Batch Method: SM 2320B-2011 Analysis Description: 2320E Alkalinity
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
METHOD BLANK: 2686934 Matrix: Water
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Alkalinity, Total as CaCO3
mg/L ND 5.0 5.0 09/23/19 13:18
LABORATORY CONTROL SAMPLE: 2686935
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Alkalinity, Total as CaCO3 mg/L 50 52.3 105 80-120
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2686936 2686937
MS MSD
92446246011 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Alkalinity, Total as CaCO3 mg/L 174 50 50 224 227 100 105 80-120 1 25
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2686938 2686939
MS MSD
92446379003 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Alkalinity, Total as CaCO3 mg/L 34.5 50 50 76.5 76.8 84 84 80-120 0 25
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 12 of 35

QUALITY CONTROL DATA
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 499323 Analysis Method: SM 2540C-2011
QC Batch Method: SM 2540C-2011 Analysis Description: 2540C Total Dissolved Solids
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
METHOD BLANK: 2687206 Matrix: Water
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Total Dissolved Solids
mg/L ND 25.0 25.0 09/23/19 15:22
LABORATORY CONTROL SAMPLE: 2687207
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Total Dissolved Solids mg/L 250 264 106 90-110
SAMPLE DUPLICATE: 2687208
92446490012 Dup
Parameter Units Result Result
RPD
Max
RPD
Qualifiers
Total Dissolved Solids mg/L 75800 70400 7 5 D6
SAMPLE DUPLICATE: 2687209
92446441005 Dup
Parameter Units Result Result
RPD
Max
RPD Qualifiers
Total Dissolved Solids mg/L 183 186 2 5
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 13 of 35

QUALITY CONTROL DATA
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 35855 Analysis Method: EPA 9034
QC Batch Method: EPA 9030A Analysis Description: 9034 Sulfide Waste Water
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
METHOD BLANK: 161424 Matrix: Water
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Sulfide
mg/L ND 1.0 1.0 09/24/19 17:55
LABORATORY CONTROL SAMPLE: 161425
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Sulfide mg/L 4 3.2 80 40-104
MATRIX SPIKE SAMPLE: 161426
92446441001 Spike MS MS % Rec
Parameter Units Result Conc. Result % Rec Limits
Qualifiers
Sulfide mg/L 1.3 8 5.1 48 10-143
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 14 of 35

QUALITY CONTROL DATA
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 499302 Analysis Method: EPA 9040C
QC Batch Method: EPA 9040C Analysis Description: 9040 pH
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005
SAMPLE DUPLICATE: 2687118
92445713001 Dup
Parameter Units Result Result
RPD
Max
RPD
Qualifiers
pH at 25 Degrees C Std. Units
8.5 8.6 0 9 H3
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 15 of 35

QUALITY CONTROL DATA
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 500302 Analysis Method: EPA 9040C
QC Batch Method: EPA 9040C Analysis Description: 9040 pH
Associated Lab Samples: 92446441006
SAMPLE DUPLICATE: 2691711
92446441006 Dup
Parameter Units Result Result
RPD
Max
RPD
Qualifiers
pH at 25 Degrees C Std. Units
7.1 6.9 3 9 D6,H3
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 16 of 35

QUALITY CONTROL DATA
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 499161 Analysis Method: EPA 300.0 Rev 2.1 1993
QC Batch Method: EPA 300.0 Rev 2.1 1993 Analysis Description: 300.0 IC Anions
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
METHOD BLANK: 2686594 Matrix: Water
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Fluoride
mg/L ND 0.10 0.050 09/21/19 22:03
LABORATORY CONTROL SAMPLE: 2686595
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Fluoride mg/L 2.5 2.4 98 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2686596 2686597
MS MSD
92446441001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L 8.2 2.5 2.5 9.6 9.7 56 57 90-110 0 10 M1
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2686598 2686599
MS MSD
92446336001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Fluoride mg/L 458 2.5 2.5 472 470 564 496 90-110 0 10 M6
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 17 of 35

QUALITY CONTROL DATA
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 574255 Analysis Method: EPA 335.4
QC Batch Method: EPA 335.4 Analysis Description: 335.4 Cyanide, Total
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
METHOD BLANK: 3121028 Matrix: Water
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Cyanide mg/L ND 0.010 0.0050 09/28/19 20:53
LABORATORY CONTROL SAMPLE: 3121029
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Cyanide mg/L 0.05 0.052 105 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 3121030 3121031
MS MSD
20121976001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Cyanide mg/L ND 0.025 0.025 0.025 0.028 98 109 90-110 10 20
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 3121032 3121033
MS MSD
35499390001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Cyanide
mg/L 0.0050U 0.025 0.025 0.027 0.027 105 106 90-110 0 20
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 18 of 35

QUALITY CONTROL DATA
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QC Batch: 500173 Analysis Method: EPA 350.1 Rev 2.0 1993
QC Batch Method: EPA 350.1 Rev 2.0 1993 Analysis Description: 350.1 Ammonia
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
METHOD BLANK: 2691177 Matrix: Water
Associated Lab Samples: 92446441001, 92446441002, 92446441003, 92446441004, 92446441005, 92446441006
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Nitrogen, Ammonia
mg/L ND 0.10 0.070 09/26/19 18:58
LABORATORY CONTROL SAMPLE: 2691178
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Nitrogen, Ammonia mg/L 5 5.0 99 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2691179 2691180
MS MSD
92446300001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Nitrogen, Ammonia mg/L 9.4 5 5 14.1 14.1 93 93 90-110 0 10
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2691181 2691182
MS MSD
92445366001 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Nitrogen, Ammonia mg/L ND 5 5 4.9 4.9 98 97 90-110 0 10
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 19 of 35

QUALIFIERS
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean -Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
LABORATORIES
PASI-A
PASI-GA
PASI-O
Pace Analytical Services - Asheville
Pace Analytical Services - Atlanta, GA
Pace Analytical Services - Ormond Beach
ANALYTE QUALIFIERS
D6 The precision between the sample and sample duplicate exceeded laboratory control limits.
H3 Sample was received or analysis requested beyond the recognized method holding time.
M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.
M6 Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution.
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 20 of 35

Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: Upstream 005, 137-266
Pace Project No.: 92446441
Lab ID
Sample ID QC Batch Method
Analytical
QC Batch Analytical Method Batch
92446441001 0ut005-05-NEW E65 SM 2320B-2011 499282
92446441002 0ut005-06-2.400 SM 2320B-2011 499282
92446441003 0ut005-07-2.210 SM 2320B-2011 499282
92446441004 0ut005-08-2.200 SM 2320B-2011 499282
92446441005 0ut005-11-6.000 SM 2320B-2011 499282
92446441006 0ut005-13-2.050 SM 2320B-2011 499282
92446441001 0ut005-05-NEW E65 SM 25400-2011 499323
92446441002 0ut005-06-2.400 SM 25400-2011 499323
92446441003 0ut005-07-2.210 SM 25400-2011 499323
92446441004 0ut005-08-2.200 SM 25400-2011 499323
92446441005 0ut005-11-6.000 SM 25400-2011 499323
92446441006 0ut005-13-2.050 SM 25400-2011 499323
92446441001 0ut005-05-NEW E65 EPA 9030A 35855 EPA 9034 35898
92446441002 0ut005-06-2.400 EPA 9030A 35855 EPA 9034 35898
92446441003 0ut005-07-2.210 EPA 9030A 35855 EPA 9034 35898
92446441004 0ut005-08-2.200 EPA 9030A 35855 EPA 9034 35898
92446441005 0ut005-11-6.000 EPA 9030A 35855 EPA 9034 35898
92446441006 0ut005-13-2.050 EPA 9030A 35855 EPA 9034 35898
92446441001 0ut005-05-NEW E65 EPA 9040C 499302
92446441002 0ut005-06-2.400 EPA 9040C 499302
92446441003 0ut005-07-2.210 EPA 9040C 499302
92446441004 0ut005-08-2.200 EPA 9040C 499302
92446441005 0ut005-11-6.000 EPA 9040C 499302
92446441006 0ut005-13-2.050 EPA 9040C 500302
92446441001 0ut005-05-NEW E65 EPA 300.0 Rev 2.1 1993 499161
92446441002 0ut005-06-2.400 EPA 300.0 Rev 2.1 1993 499161
92446441003 0ut005-07-2.210 EPA 300.0 Rev 2.1 1993 499161
92446441004 0ut005-08-2.200 EPA 300.0 Rev 2.1 1993 499161
92446441005 0ut005-11-6.000 EPA 300.0 Rev 2.1 1993 499161
92446441006 0ut005-13-2.050 EPA 300.0 Rev 2.1 1993 499161
92446441001 0ut005-05-NEW E65 EPA 335.4 574255 EPA 335.4 574264
92446441002 0ut005-06-2.400 EPA 335.4 574255 EPA 335.4 574264
92446441003 0ut005-07-2.210 EPA 335.4 574255 EPA 335.4 574264
92446441004 0ut005-08-2.200 EPA 335.4 574255 EPA 335.4 574264
92446441005 0ut005-11-6.000 EPA 335.4 574255 EPA 335.4 574264
92446441006 0ut005-13-2.050 EPA 335.4 574255 EPA 335.4 574264
92446441001 0ut005-05-NEW E65 EPA 350.1 Rev 2.0 1993 500173
92446441002 0ut005-06-2.400 EPA 350.1 Rev 2.0 1993 500173
92446441003 0ut005-07-2.210 EPA 350.1 Rev 2.0 1993 500173
92446441004 0ut005-08-2.200 EPA 350.1 Rev 2.0 1993 500173
92446441005 0ut005-11-6.000 EPA 350.1 Rev 2.0 1993 500173
92446441006 0ut005-13-2.050 EPA 350.1 Rev 2.0 1993 500173
REPORT OF LABORATORY ANALYSIS
Date: 10/02/2019 08:48 AM
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 21 of 35

Blank Present?
r-cip
/12Aatifical
Document Name:
Sample Condition Upon Recefpt(SCUR)
Document No.:
F-CAR•C5-033-Rev.06
Document Revised: February 7, 2018
• Page 2 of 2
IssaingAuthority:
Pace Carolinas Quaffty Office
Laboratory receiving samples:
Asheville Q EdenD Greenwood [] Huntersville 0
5a171pl€Condition .
Upn1r Receipt_
Courier:
❑ Cpmntertial
Custody Seal Present?
Raleigh[' Mechanicsvflle❑
I``r i WO#:92446441
i}�� � ,� t I l ^1L.r'l r I�rnject q;
❑Fed Ex ❑UPS USPS , Gfent
QPace QCtther: 111111111111111111111
9244844!
oyes go Seals intact? Oyes ONG
fate/initials Person Examining CarrtentMM
Client Name:
Packing Maieilal: ['Bubble Wrap
Thermometer.
❑IRGun aCil lre
Coate( Temp rC):
Cnaf er Temp Corrected ['C)•
[]Bubble Bags ['None/ ❑ Other
Type of ice: [Wet ❑Blue
Correction Factor: Acid/Subtract (°C) -- 3 • }
USDA Regulated Sail ( N/A, water sample)
Did samples originate in a quarantine zone within the United States: CA, NY, or SC (check. maps)?
❑Yes ONo
1 Chain of Custody Present?
I Samples Arrived within Hold Titre?
Short Hold Time Analysis (572 hr.)?
Rush Turn Arc::nd ir.;c I?cy:.,i-•-tsv" •
Sufficient Volume?
Correct Containers Used?
-Pace Containers Used?
Containers intact?
Dissolved analysis: Samples Reid Filtered?
Sample Labels Match COC7
d'os pain aN/A
o ❑N/A
es ONo ❑N/A . ) 3.
.rya::
Vim DPVA 4
❑No ❑N/A
©No ON/A
ONo ❑N/A
ONo ON/A
f7ess ONo ION/A
-Includes Oate/me/ID/Analysts Matrix Y 1�
(Dime
BfologIcai Tissue ozen?
Dyes ONo Tissue
Temp should be above freezing to ti C
❑Samples out of temp critede.Samples on ice, coaling process
has begun
Did samples originate from a foreign source (internationally,
including Hawaii and Puerto fuc3)7 ❑Yes ONo
Comments/Discrepancy:
Headspace In VOA Vials(>5-Smmj7
rip Blank Custody Seals Present?
COMMEN1S/SAMPLE DtSCREPANGy
Des ONo
❑Yes ❑Ntr—IktWA
❑Yes ONo Err/4/A
Field Data Required? ❑Yes ❑No
Lot ID of split containers:
WENT NOTIFICATION/RESOLUTION
ono--9_v) U P rto f ryv- S Foe
Person contacted: MULQ)
Project Manager SCURF Review:
0'
Oata/71me: t r iaic G —z©-iq
Date: (1~ L/ — l f
Page 22 of
5
1161.6 126M

,�1(t
Document Name:
Sample Condition Upon Recelpt(SCUR)
Document No.:
F-CAR-CS.033-Rev.08
*Check mark top half of box if pH and/or de chlorination is
verified and within the acceptance range for preservation
samples.
Exceptions: VOA, Coflform, €OC, Oil and Grease, DROP G1S (water) DOC, LLHg
**Bottom half of box is to list number of bottle
Document Revised: February 7, 2013
Pa ee 1 al 2
Issuing Authority:
Pace Carolinas Quality Office
Projectl WWI : 92446441
PM: AMB Due Date; 09/27/19
CLIENT: 92-Alcoa
4
z
0
tic Unpresery
E
m
2
a
Uepreser4ed
BP3U-25G mL Plastic
sP2U-500 mL PlastiC
V
ar
0
c N
a
m
HP31.4-250 mt. p
a
z
V • h
a qA a
o q 0
z z
x
u
Lo
E E
n e
a m
u
3
7
1.7
v
w • 0
a 4
U N
� y
• z
s
9
E
4
V
a
0 O
.0
E
E
ri
a 4
z
0
x
z
n
4
E
0
N
.ggi.
Qd
0
a
x
z
c
II
0
E
c9
I IN') 111
4
1111
'YO1
11' Or"'
(3 vials per id
.0
1
v
u
R
N
N
F-
a
of
E
a'
F-
co
m
0
n
x
z
3P3A-250 inL P
x
A
s
C
E
4
J
7
a
a
C
E
N
z
m
U
a
7
`a•
E
4
E
0
7
0
7 0
IiH Adjustment Log for Preserved Samples
Sample ID
Type of Preservative
pH upon receipt
pate preservation adjusted
Time preservation
adjusted
Amount of Preservative
added
Lot S
Page 23 of 3
Nate: Whenever there is a discrepancy affecting North CarcCoa compliance samples. a copy of this form will be sent to the North Carolln0 OEHNR Certification OThce 1i.a.

0
m
m
1 Al
ITEM #
MATRIX CODE (see veld codes mlatt)
SAMPLE TYPE IG=GRAB C=CO41P)
chi
N
f�.
x
C3
TEMP in C
Received an
Ice
mN)
Cuslody
Seeiad
Cooler
ffiNS
Samples
intact
ff N)
i
x x x
X X X
X
x
x
X x X
X X
rJ
Q
got
rC1
x
m
m
SAMPLE TEMP AT COLLECTION
Ott) IOFCONTAINERS
x
X X
Unp est,rved
H2804
H NO3
MC]
NaOM
Na2S2Q3
Methanol
Other
Cyanide by335.4
Cyanide
by ASTM D7611-12
Fluoride by 360.0'SM-4011
Alkatfnoy by 2320
AmmeNa by 350.1
pH by 9040
Sulfide by 9034
TDS by 2540C
Residual Chlorine (YlN)
0
0
m
�L~
m
� a
5
1
Ct �7
f �aS
3 4
0
z
0
n
-13
m
to
m
d Z
en
C
a —I
El• v
1
O
n g• .
•
2 m
cD
9
0
S=
83
a �
a
0
n
5
m
Page 24 of 35

Inter -Mountain Laboratories Your Environmental Monitoring Partner
/' npl i„„,.
1673 Terra Avenue Sheridan, WY 82801 ph: [phone]
INTER -MOUNTAIN LABS
Date: 10/1/2019
CLIENT: Pace Analytical Charlotte
Project: Upstream 005, 137-266
Lab Order: S1909341
CASE NARRATIVE
Report ID: S1909341002
(Replaces S1909341001)
Samples 92446441001 0ut005-05 NEW E65, 92446441002 0ut005-06-2.400, 92446441003 0ut005-07-2.210,
92446441004 0ut005-08-2.200, 92446441005 0ut005-11-6.000 and 92446441006 0ut005-13-2.050 were received on
September 23, 2019.
All samples were received and analyzed within the EPA recommended holding times, except those noted below in this case
narrative. Samples were analyzed using the methods outlined in the following references:
"Standard Methods For The Examination of Water and Wastewater", approved method versions
Test Methods for Evaluating Solid Waste, Physical/Chemical Methods, SW-846, 3rd Edition
40 CFR Parts 136 and 141
40 CFR Part 50, Appendices B, J, L, and 0
Methods indicated in the Methods Update Rule published in the Federal Register Friday, May 18, 2012
ASTM approved and recognized standards
All Quality Control parameters met the acceptance criteria defined by EPA and Inter -Mountain Laboratories except as
indicated in this case narrative.
This report was issued to include the MDL and J qualifiers per client request. It replaces S1909341001.
Reviewed by:
John Jacobs, Project Manager
Page 1 of 1
Page 25 of 35

Inter -Mountain Laboratories
Your Environmental Monitoring Partner
1673 Terra Avenue Sheridan, WY 82801
ph: [phone]
INTER -MOUNTAIN LABS
CLIENT: Pace Analytical Charlotte
9800 Kincey Ave Ste 100
Huntersville, NC 28078
Sample Analysis Report
Client Sample ID 92446441001 Out005-05 NEW E65
Project: Upstream 005, 137-266
Matrix: Water
COC ID:
Date Reported:
Report ID:
Collection Date:
Date Received:
Lab ID:
Work Order:
10/1/2019
S1909341002
(Replaces S1909341001)
9/19/2019 10:30:00 AM
9/23/2019 7:24:00 AM
S1909341-001
S1909341
Analyses
Result
RL
MDL Qual Units Method
Date Analyzed/Init
General Parameters
Cyanide, Total
Anions
Fluoride
0.0045
8.7
0.02
0.1
0.0023 J
0.0292
mg/L ASTM D7511
mg/L SM 4500FC
09/25/2019 1559 AMB
09/25/2019 1430 AB
These results apply only to the samples tested.
Qualifiers: B
E
H
L
ND
S
X
Analyte detected in the associated Method Blank
Value above quantitation range
Holding times for preparation or analysis exceeded
Analyzed by another laboratory
Not Detected at the Reporting Limit
Spike Recovery outside accepted recovery limits
Matrix Effect
RL - Reporting Limit
C Calculated Value
G Analyzed at IML Gillette laboratory
J Analyte detected below quantitation limits
M Value exceeds Monthly Ave or MCL or is less than LCL
0 Outside the Range of Dilutions
U Analysis reported under the reporting limit
Reviewed by:
John Jacobs, Project Manager
Page 1 of 6
Page 26 of 35

Inter -Mountain Laboratories
Your Environmental Monitoring Partner
1673 Terra Avenue Sheridan, WY 82801
ph: [phone]
INTER -MOUNTAIN LABS
CLIENT: Pace Analytical Charlotte
9800 Kincey Ave Ste 100
Huntersville, NC 28078
Sample Analysis Report
Client Sample ID 92446441002 Out005-06-2.400
Project: Upstream 005, 137-266
Matrix: Water
COC ID:
Date Reported:
Report ID:
Collection Date:
Date Received:
Lab ID:
Work Order:
10/1/2019
S1909341002
(Replaces S1909341001)
9/19/2019 11:30:00 AM
9/23/2019 7:24:00 AM
S1909341-002
S1909341
Analyses
Result
RL
MDL Qual Units Method
Date Analyzed/Init
General Parameters
Cyanide, Total
Anions
Fluoride
0.0092
2.8
0.02
0.1
0.0023 J
0.0292
mg/L ASTM D7511
mg/L SM 4500FC
09/25/20191601 AMB
09/25/2019 550 AB
These results apply only to the samples tested.
Qualifiers: B
E
H
L
ND
S
X
Analyte detected in the associated Method Blank
Value above quantitation range
Holding times for preparation or analysis exceeded
Analyzed by another laboratory
Not Detected at the Reporting Limit
Spike Recovery outside accepted recovery limits
Matrix Effect
RL - Reporting Limit
C Calculated Value
G Analyzed at IML Gillette laboratory
J Analyte detected below quantitation limits
M Value exceeds Monthly Ave or MCL or is less than LCL
0 Outside the Range of Dilutions
U Analysis reported under the reporting limit
Reviewed by:
John Jacobs, Project Manager
Page 2 of 6
Page 27 of 35

Inter -Mountain Laboratories
Your Environmental Monitoring Partner
1673 Terra Avenue Sheridan, WY 82801
ph: [phone]
INTER -MOUNTAIN LABS
CLIENT: Pace Analytical Charlotte
9800 Kincey Ave Ste 100
Huntersville, NC 28078
Sample Analysis Report
Client Sample ID 92446441003 Out005-07-2.210
Project: Upstream 005, 137-266
Matrix: Water
COC ID:
Date Reported:
Report ID:
Collection Date:
Date Received:
Lab ID:
Work Order:
10/1/2019
S1909341002
(Replaces S1909341001)
9/19/2019 11:50:00 AM
9/23/2019 7:24:00 AM
S1909341-003
S1909341
Analyses
Result
RL
MDL Qual Units Method
Date Analyzed/Init
General Parameters
Cyanide, Total
Anions
Fluoride
0.0056
3.8
0.02
0.1
0.0023 J
0.0292
mg/L ASTM D7511
mg/L SM 4500FC
09/25/2019 1603 AMB
09/25/2019 554 AB
These results apply only to the samples tested.
Qualifiers: B
E
H
L
ND
S
X
Analyte detected in the associated Method Blank
Value above quantitation range
Holding times for preparation or analysis exceeded
Analyzed by another laboratory
Not Detected at the Reporting Limit
Spike Recovery outside accepted recovery limits
Matrix Effect
RL - Reporting Limit
C Calculated Value
G Analyzed at IML Gillette laboratory
J Analyte detected below quantitation limits
M Value exceeds Monthly Ave or MCL or is less than LCL
0 Outside the Range of Dilutions
U Analysis reported under the reporting limit
Reviewed by:
John Jacobs, Project Manager
Page 3 of 6
Page 28 of 35

Inter -Mountain Laboratories
Your Environmental Monitoring Partner
1673 Terra Avenue Sheridan, WY 82801
ph: [phone]
INTER -MOUNTAIN LABS
CLIENT: Pace Analytical Charlotte
9800 Kincey Ave Ste 100
Huntersville, NC 28078
Sample Analysis Report
Client Sample ID 92446441004 Out005-08-2.200
Project: Upstream 005, 137-266
Matrix: Water
COC ID:
Date Reported:
Report ID:
Collection Date:
Date Received:
Lab ID:
Work Order:
10/1/2019
S1909341002
(Replaces S1909341001)
9/19/2019 12:15:00 PM
9/23/2019 7:24:00 AM
S1909341-004
S1909341
Analyses
Result
RL
MDL Qual Units Method Date Analyzed/Init
General Parameters
Cyanide, Total
Anions
Fluoride
ND
24.9
0.02
0.1
0.0023
0.0292
mg/L ASTM D7511
mg/L SM 4500FC
09/25/2019 1605 AMB
09/25/2019 1434 AB
These results apply only to the samples tested.
Qualifiers: B
E
H
L
ND
S
X
Analyte detected in the associated Method Blank
Value above quantitation range
Holding times for preparation or analysis exceeded
Analyzed by another laboratory
Not Detected at the Reporting Limit
Spike Recovery outside accepted recovery limits
Matrix Effect
RL - Reporting Limit
C Calculated Value
G Analyzed at IML Gillette laboratory
J Analyte detected below quantitation limits
M Value exceeds Monthly Ave or MCL or is less than LCL
0 Outside the Range of Dilutions
U Analysis reported under the reporting limit
Reviewed by:
John Jacobs, Project Manager
Page 4 of 6
Page 29 of 35

Inter -Mountain Laboratories
Your Environmental Monitoring Partner
1673 Terra Avenue Sheridan, WY 82801
ph: [phone]
INTER -MOUNTAIN LABS
CLIENT: Pace Analytical Charlotte
9800 Kincey Ave Ste 100
Huntersville, NC 28078
Sample Analysis Report
Client Sample ID 92446441005 Out005-11-6.000
Project: Upstream 005, 137-266
Matrix: Water
COC ID:
Date Reported:
Report ID:
Collection Date:
Date Received:
Lab ID:
Work Order:
10/1/2019
S1909341002
(Replaces S1909341001)
9/19/2019 1:45:00 PM
9/23/2019 7:24:00 AM
S1909341-005
S1909341
Analyses
Result
RL
MDL Qual Units Method
Date Analyzed/Init
General Parameters
Cyanide, Total
Anions
Fluoride
0.0122
2.7
0.02
0.1
0.0023 J
0.0292
mg/L ASTM D7511
mg/L SM 4500FC
09/25/2019 1607 AMB
09/25/2019 605 AB
These results apply only to the samples tested.
Qualifiers: B
E
H
L
ND
S
X
Analyte detected in the associated Method Blank
Value above quantitation range
Holding times for preparation or analysis exceeded
Analyzed by another laboratory
Not Detected at the Reporting Limit
Spike Recovery outside accepted recovery limits
Matrix Effect
RL - Reporting Limit
C Calculated Value
G Analyzed at IML Gillette laboratory
J Analyte detected below quantitation limits
M Value exceeds Monthly Ave or MCL or is less than LCL
0 Outside the Range of Dilutions
U Analysis reported under the reporting limit
Reviewed by:
John Jacobs, Project Manager
Page 5 of 6
Page 30 of 35

Inter -Mountain Laboratories
Your Environmental Monitoring Partner
1673 Terra Avenue Sheridan, WY 82801
ph: [phone]
INTER -MOUNTAIN LABS
CLIENT: Pace Analytical Charlotte
9800 Kincey Ave Ste 100
Huntersville, NC 28078
Sample Analysis Report
Client Sample ID 92446441006 Out005-13-2.050
Project: Upstream 005, 137-266
Matrix: Water
COC ID:
Date Reported:
Report ID:
Collection Date:
Date Received:
Lab ID:
Work Order:
10/1/2019
S1909341002
(Replaces S1909341001)
9/19/2019 1:20:00 PM
9/23/2019 7:24:00 AM
S1909341-006
S1909341
Analyses
Result
RL
MDL Qual Units Method
Date Analyzed/Init
General Parameters
Cyanide, Total
Anions
Fluoride
0.0125
2.6
0.02
0.1
0.0023 J
0.0292
mg/L ASTM D7511
mg/L SM 4500FC
09/25/2019 1609 AMB
09/25/2019 608 AB
These results apply only to the samples tested.
Qualifiers: B
E
H
L
ND
S
X
Analyte detected in the associated Method Blank
Value above quantitation range
Holding times for preparation or analysis exceeded
Analyzed by another laboratory
Not Detected at the Reporting Limit
Spike Recovery outside accepted recovery limits
Matrix Effect
RL - Reporting Limit
C Calculated Value
G Analyzed at IML Gillette laboratory
J Analyte detected below quantitation limits
M Value exceeds Monthly Ave or MCL or is less than LCL
0 Outside the Range of Dilutions
U Analysis reported under the reporting limit
Reviewed by:
John Jacobs, Project Manager
Page 6 of 6
Page 31 of 35

Inter -Mountain Laboratories
Your Environmental Monitoring Partner
INTER -MOUNTAIN LABS
CLIENT:
Work Order:
Project:
1673 Terra Avenue Sheridan, WY 82801
Pace Analytical Charlotte
S1909341
Upstream 005, 137-266
Cyanide, Total by inline UV
ph: [phone]
ANALYTICAL QC SUMMARY REPORT
Sample Type MBLK
Date: 10/1/2019
Report ID: S1909341002
(Replaces S1909341001)
Units: mg/L
DI BLANK (09/25/19 15:39)
Analyte
RunNo: 171959
Result RL Spike Ref Samp %REC % Rec Limits Qual
Cyanide, Total
Cyanide, Total by inline UV
Sample Type LCS
ND
0.0200
Units: mg/L
QC (09/25/19 15:45)
Analyte
RunNo: 171959
Result RL Spike Ref Samp %REC % Rec Limits Qual
Cyanide, Total
Cyanide, Total by inline UV
0.281 0.0200 0.299
Sample Type MS
Units: mg/L
93.9
84-116
51909341-0066 (09/25/19 16:13)
Analyte
RunNo: 171959
Result RL Spike Ref Samp %REC % Rec Limits Qual
Cyanide, Total
Cyanide, Total by inline UV
0.535 0.0200 0.5 0.0125 104 80 - 120
Sample Type MSD
Units: mg/L
S1909341-006B (09/25/19 16:15)
Analyte
RunNo: 171959
Result RL Cone %RPD %REC % RPD Limits Qual
Cyanide, Total
Cyanide, Total by inline UV
0.539 0.0200 0.535 0.892
Sample Type DUP
Units: mg/L
105
20
S1909341-006B (09/25/19 16:11)
Analyte
RunNo: 171959
Result RL Ref Samp %RPD %REC % RPD Limits Qual
Cyanide, Total
0.0115 0.0200 0.0125
0
20
J
Qualifiers: B
G
J
ND
R
X
Analyte detected in the associated Method Blank
Analyzed at IML Gillette laboratory
Analyte detected below quantitation limits
Not Detected at the Reporting Limit
RPD outside accepted recovery limits
Matrix Effect
E Value above quantitation range
H Holding times for preparation or analysis exceeded
L Analyzed by another laboratory
0 Outside the Range of Dilutions
S Spike Recovery outside accepted recovery limits
Paa9$of 35

Inter -Mountain Laboratories
Your Environmental Monitoring Partner
INTER -MOUNTAIN LABS
CLIENT:
Work Order:
Project:
1673 Terra Avenue Sheridan, WY 82801
Pace Analytical Charlotte
S1909341
Upstream 005, 137-266
Fluoride by SM 4500
ph: [phone]
ANALYTICAL QC SUMMARY REPORT
Sample Type MBLK
Date: 10/1/2019
Report ID: S1909341002
(Replaces S1909341001)
Units: mg/L
BLANK (09/24/19 13:28)
Analyte
RunNo: 171936
Result RL Spike Ref Samp %REC % Rec Limits Qual
Fluoride
ND
0.100
BLANK (09/25/19 14:15)
Analyte
RunNo: 171970
Result RL Spike Ref Samp %REC % Rec Limits Qual
Fluoride
Fluoride by SM 4500
Sample Type LCS
ND
0.100
Units: mg/L
ATQC (09/24/19 13:01)
Analyte
RunNo: 171936
Result RL Spike Ref Samp %REC % Rec Limits Qual
Fluoride
ATQC (09/25/19 13:46)
Analyte
Fluoride
Fluoride by SM 4500
2.81
0.100
3
93.5
85 - 115
RunNo: 171970
Result RL Spike Ref Samp %REC % Rec Limits Qual
Sample Type MS
2.90
0.100
3
Units: mg/L
96.7
85 - 115
S1909325-006ASPK MS (09/24/19 18:50)
Analyte
RunNo: 171936
Result RL Spike Ref Samp %REC % Rec Limits Qual
Fluoride
2.54
0.100
2.5
0.301
89.4
80 - 120
S1909340-006ASPK MS (09/25/19 05:36)
Analyte
RunNo: 171936
Result RL Spike Ref Samp %REC % Rec Limits Qual
Fluoride
Fluoride by SM 4500
2.55
Sample Type MSD
0.100
2.5 0
Units: mg/L
102
80 - 120
51909325-006ASPK MSD (09/24/19 18:53)
Analyte
RunNo: 171936
Result RL Conc %RPD %REC % RPD Limits Qual
Fluoride
2.56
0.100
2.54
0.978
90.4
20
51909340-006ASPK MSD (09/25/19 05:40)
Analyte
RunNo: 171936
Result RL Conc %RPD %REC % RPD Limits Qual
Fluoride
Fluoride by SM 4500
2.54
Sample Type DUP
0.100 2.55 0.509
Units: mg/L
101
20
L1909325-002AD (09/24/19 17:44)
Analyte
RunNo: 171936
Result RL Ref Samp %RPD %REC % RPD Limits Qual
Fluoride
0.415
0.100
0.395
4.92
20
S1909340-005AD (09/25/19 05:08)
Analyte
RunNo: 171936
Result RL Ref Samp %RPD %REC % RPD Limits Qual
Fluoride
0.646
0.100 0.674 4.28
20
Qualifiers: B
G
ND
R
X
Analyte detected in the associated Method Blank
Analyzed at IML Gillette laboratory
Analyte detected below quantitation limits
Not Detected at the Reporting Limit
RPD outside accepted recovery limits
Matrix Effect
E Value above quantitation range
H Holding times for preparation or analysis exceeded
L Analyzed by another laboratory
0 Outside the Range of Dilutions
S Spike Recovery outside accepted recovery limits
PaP2Eb.nof 35

,
Cooler Temperature on Receipt t 3 - °C I Custody Seal Y or I Rec
41
NI
.
-
-
■
a
,
z
f
Cri
a
/
C
\
.�
(I
);-
1„--
it..
6
/
k
¥
#
.
\/
4"
§
.
,
(.
�
_.
�
\}
9/19/2019 12:15
9/19/201913:45
9/19/2019 13:20
1—VeArta
Lp-12 - %°Ii U�
9/19/2019 10:30 92446441001
9/19/2019 11:30 92446441002
9/19/201911:50 92446441003
.
�.»\�
§[
§
(i
b�
92446441004
92446441005
92446441006
.
1
.il
.{
a
q
at
/
#
■
N.
g
Fy
/
_
eived on Ice / i ' r N I Samples Intao Y1or N
-9
7
:
Q
,
q
��
,
y
¥
k
,
>(
,
\~.6
\ 2�
»
<.
\\ 2
. .
(
.'-
..
III LAB USE ONLY
■■MEN
■1111..■
.
.
/
•
—
] »
1
I
,, . .�.
.
..
3.
§
c
7
§
2
Page 34 of 35

INTER -MOUNTAIN LAE15
Survey Meter # 77 `4 I — 2--
pH strip lot# ClS-7-t}(Q(,
Thermometer SN# 3r L13-S
Condition Upon Receipt (Attach to COC)
Sample Receipt
1 Number of ice chests/packages received:
Note as "OTC" if samples are received over the counter, unpackaged
2 Temperature of cooler/samples.
5(3
3
4
5
6
7
8
Temps Observed (°C):
Temps Corrected (°C):
ROI? c__Yes
(If more than 8 coolers, please write on back)
No
Acceptable is : 0,1 ° to 10°C for Bacteria and 0.1 ° to 6°C for most other water parameters. Samples may not have had adequate time to cool
following collection. Indicate ROI (Received on Ice) for iced samples received on the same day as sampled, in addition to temperature at receipt.
Client contact for temperatures outside method criteria must be documented below.
Emission rate of samples for radiochemical analyses < 0.5mR/hr?
COC Number (If applicable):
Do the number of bottles agree with the COC?
Were the samples received intact? (no broken bottles, leaks, etc.)
Were the sample custody seals intact?
Is the COC properly completed, legible, and signed?
Sample Verification, Labeling & Distribution
1 Were all requested analyses understood and appropriate?
2 Did the bottle labels correspond with the COC information?
3 Samples collected in method -prescribed containers?
4 Sample Preservation:
pH at Receipt: Final pH (if added in lab):
Total Metals
ass Metals
Nutrient
Cyanide
Sulfide
Phenol
SDWA Rads
Yes No
des
PreservativelLot#
Total Metals HNO3
ass Metals Filtered and preserved in metals
Nutrient H2SO4
Cyanide NaOH
Sulfide ZnAcet
Phenol H2SO4
SDWA Rads HNO3
Preserved samples for Rad analysis accompanied by Field Blank?
5 VOA vials have <6mm headspace?
6 Were all analyses within holding time at the time of receipt?
7 Specially requested detection limits (RLs) assigned?
8 Have rush or project due dates been checked and accepted?
9 Do samples require subcontracted analyses?
If "Yes`, which type of subcontracting is required? General
Sample Receipt, Verification, Login, Labeling & Distribution completed by
Yes
Yes
Yes )
Yes
Yes
Customer -Specified
No
No
No
No
No
No
No
(initials) :
No
No
No
No
No
cv5
Set ID: 51909 314 I
NA
Date/Time Added:
Filtered and preserved in metals
Certified
Discrepancv_ Documentation (use back of sheet for notes on discrepancies)
Any items listed above with a response of "No" or do not meet specifications must be resolved.
Person Contacted:
Initiated By:
Problem:
Resolution:
Date/Time:
Method of Contact: Phone:
Email:
Inter -Mountain Labs
Receipt Checklist Rev 2.3 Revision Date: 3/28/Nge 35 of 35

Draft — Hydrogeological Conceptual Site Model Update — Badin Business Park
2020-03-30 Groundwater
EHS Support LLC

� titi eurofins
(—Review your project
results through
TotalAccesss
Visit us at:
www.testamericainc.com
Environment Testing
TestAmerica
ANALYTICAL REPORT
Eurofins TestAmerica, Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Tel: [phone]
Laboratory Job ID: 680-182269-
Client Project/Site: Alcoa - Badin, NC
r:
Civil & Environmental Consultants Inc
2704 Cherokee Farm Way
Suite 101
Knoxville, Tennessee 37920
Attn: Michael Worden
Authorized for release by:
4/14/2020 6:02:31 PM
Sheila Hoffman, Project Manager II
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC and 2009 TNI requirements for accredited
parameters, exceptions are noted in this report. This report may not be reproduced except in full,
and with written approval from the laboratory. For questions please contact the Project Manager
at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Method Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-182269-1
Project/Site: Alcoa - Badin, NC
Method Method Description Protocol Laboratory
300.0-1993 R2.1 Anions, Ion Chromatography MCAWW TAL SAV
OIA-1677 Cyanide, Free (Flow Injection) 01 CORP TAL PIT
Subcontract ASTM 7511-12 - Total Cyanide None SC0103
Protocol References:
MCAWW = "Methods For Chemical Analysis Of Water And Wastes", EPA-600/4-79-020, March 1983 And Subsequent Revisions.
None = None
01 CORP = 01 Corporation Instrument Manual.
Laboratory References:
SC0103 = Eurofins Lancaster Laboratories Env LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
TAL SAV = Eurofins TestAmerica, Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins TestAmerica, Savannah
Page 2 of 27 4/14/2020

Sample Summary
Client: Civil & Environmental Consultants Inc Job ID: 680-182269-1
Project/Site: Alcoa - Badin, NC
Lab Sample ID Client Sample ID Matrix Collected Received Asset ID
680-182269-1 FO-2 Water 03/30/20 11:15 04/01/20 15:30
680-182269-2 MW-31 Water 03/30/20 13:00 04/01/20 15:30
680-182269-3 MW-103 Water 03/30/20 13:50 04/01/20 15:30
680-182269-4 MW-104 Water 03/30/20 14:40 04/01/20 15:30
Eurofins TestAmerica, Savannah
Page 3 of 27 4/14/2020

Definitions/Glossary
Client: Civil & Environmental Consultants Inc Job ID: 680-182269-1
Project/Site: Alcoa - Badin, NC
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
PQL Practical Quantitation Limit
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
Eurofins TestAmerica, Savannah
Page 4 of 27 4/14/2020

Case Narrative
Client: Civil & Environmental Consultants Inc Job ID: 680-182269-1
Project/Site: Alcoa - Badin, NC
Job ID: 680-182269-1
Laboratory: Eurofins TestAmerica, Savannah
Narrative
CASE NARRATIVE
Client: Civil & Environmental Consultants Inc
Project: Alcoa - Badin, NC
Report Number: 680-182269-1
With the exceptions noted as flags or footnotes, standard analytical protocols were followed in the analysis of the samples and no
problems were encountered or anomalies observed. In addition all laboratory quality control samples were within established control
limits, with any exceptions noted below. Each sample was analyzed to achieve the lowest possible reporting limit within the constraints of
the method. In the event of interference or analytes present at high concentrations, samples may be diluted. For diluted samples, the
reporting limits are adjusted relative to the dilution required.
RECEIPT
The samples were received on 04/01/2020; the samples arrived in good condition, properly preserved and on ice. The temperature of the
coolers at receipt was 8.2 C.
FREE CYANIDE
Samples FO-2 (680-182269-1), MW-31 (680-182269-2), MW-103 (680-182269-3) and MW-104 (680-182269-4) were analyzed for free
cyanide in accordance with 1677. The samples were analyzed on 04/09/2020.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
ANIONS BY ION CHROMATOGRAPHY (28 DAY)
Samples FO-2 (680-182269-1), MW-31 (680-182269-2), MW-103 (680-182269-3) and MW-104 (680-182269-4) were analyzed for Anions
by Ion Chromatography (28 Day) in accordance with EPA Method 300.0. The samples were analyzed on 04/05/2020, 04/08/2020 and
04/10/2020.
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Subcontract Work
Method ASTM 7511-12 - Total Cyanide: This method was subcontracted to Eurofins Lancaster Laboratories Env LLC. The subcontract
laboratory certification is different from that of the facility issuing the final report.
Eurofins TestAmerica, Savannah
Page 5 of 27 4/14/2020

Client Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-182269-1
Project/Site: Alcoa - Badin, NC
Client Sample ID: FO-2
Date Collected: 03/30/20 11:15
Date Received: 04/01/20 15:30
Lab Sample ID: 680-182269-1
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride 0.14 0.10 0.040 mg/L 04/05/20 02:41 1
General Chemistry
Analyte
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079
0.0020 0.00079 mg/L 04/09/20 08:41 1
Client Sample ID: MW-31
Date Collected: 03/30/20 13:00
Date Received: 04/01/20 15:30
Lab Sample ID: 680-182269-2
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride <0.040 0.10 0.040 mg/L 04/08/20 20:16 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 04/09/20 08:43 1
Client Sample ID: MW-103
Date Collected: 03/30/20 13:50
Date Received: 04/01/20 15:30
Lab Sample ID: 680-182269-3
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride 1.6 0.10 0.040 mg/L 04/08/20 20:29 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 04/09/20 08:45 1
Client Sample ID: MW-104
Date Collected: 03/30/20 14:40
Date Received: 04/01/20 15:30
Lab Sample ID: 680-182269-4
Matrix: Water
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride 3.4 0.10 0.040 mg/L 04/10/20 18:38 1
General Chemistry
Analyte Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 04/09/20 08:47 1
Eurofins TestAmerica, Savannah
Page 6 of 27 4/14/2020

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-182269-1
Project/Site: Alcoa - Badin, NC
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Lab Sample ID: MB 680-614027/33
Matrix: Water
Analysis Batch: 614027
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride <0.040 0.10 0.040 mg/L 04/04/20 21:12 1
Lab Sample ID: LCS 680-614027/34
Matrix: Water
Analysis Batch: 614027
Analyte
Client Sample ID: Lab Control Sample ITA
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Fluoride
Lab Sample ID: LCSD 680-614027/35
Matrix: Water
Analysis Batch: 614027
Analyte
2.00 2.17 mg/L 109 90 _ 110
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
Fluoride 2.00 2.20 mg/L 110 90 - 110 1 15
Lab Sample ID: MB 680-614461/10
Matrix: Water
Analysis Batch: 614461
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride <0.040 0.10 0.040 mg/L 04/08/20 16:36 1
Lab Sample ID: LCS 680-614461/11
Matrix: Water
Analysis Batch: 614461
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Fluoride
Lab Sample ID: LCSD 680-614461/12
Matrix: Water
Analysis Batch: 614461
Analyte
2.00 2.07 mg/L 104 90. 110
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
Fluoride 2.00 2.08 mg/L 104 90 _ 110 0 15
Lab Sample ID: MB 680-614787/2
Matrix: Water
Analysis Batch: 614787
Analyte
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride <0.040 0.10 0.040 mg/L 04/10/20 13:54 1
Lab Sample ID: LCS 680-614787/3
Matrix: Water
Analysis Batch: 614787
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Fluoride
2.00 2.16 mg/L 108 90 _ 110
Eurofins TestAmerica, Savannah
Page 7 of 27 4/14/2020

QC Sample Results
Client: Civil & Environmental Consultants Inc Job ID: 680-182269-1
Project/Site: Alcoa - Badin, NC
Method: 300.0-1993 R2.1 - Anions, Ion Chromatography
Lab Sample ID: LCSD 680-614787/4
Matrix: Water
Analysis Batch: 614787
Analyte
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
Fluoride 2.00 2.16 mg/L 108 90 _ 110 0 15
Method: OIA-1677 - Cyanide, Free (Flow Injection)
Lab Sample ID: MB 180-312484/22
Matrix: Water
Analysis Batch: 312484
Analyte
MB MB
Client Sample ID: Method Blank
Prep Type: Total/NA
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
Cyanide, Free <0.00079 0.0020 0.00079 mg/L 04/09/20 08:33 1
PLab Sample ID: LCS 180-312484/21
Matrix: Water
Analysis Batch: 312484
Analyte
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec.
Added Result Qualifier Unit D %Rec Limits
Cyanide, Free
Lab Sample ID: LCSD 180-312484/42
Matrix: Water
Analysis Batch: 312484
Analyte
0.0500 0.0546 mg/L 109 82. 132
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike LCSD LCSD %Rec. RPD
Added Result Qualifier Unit D %Rec Limits RPD Limit
Cyanide, Free
0.0500 0.0528 mg/L 106 82.132 3 20
Eurofins TestAmerica, Savannah
Page 8 of 27 4/14/2020

QC Association Summary
Client: Civil & Environmental Consultants Inc
Project/Site: Alcoa - Badin, NC
HPLC/IC
Analysis Batch: 614027
Lab Sample ID
Client Sample ID
Job ID: 680-182269-1
Prep Type
Matrix
Method
Prep Batch
680-182269-1
MB 680-614027/33
LCS 680-614027/34
LCSD 680-614027/35
Analysis Batch: 614461
Lab Sample ID
FO-2
Method Blank
Lab Control Sample
Lab Control Sample Dup
Client Sample ID
Total/NA
Total/NA
Total/NA
Total/NA
Prep Type
Water
Water
Water
Water
Matrix
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
Method
Prep Batch
680-182269-2
680-182269-3
MB 680-614461/10
LCS 680-614461/11
LCSD 680-614461/12
Analysis Batch: 614787
Lab Sample ID
MW-31
MW-103
Method Blank
Lab Control Sample
Lab Control Sample Dup
Client Sample ID
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Prep Type
Water
Water
Water
Water
Water
Matrix
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
Method
Prep Batch
680-182269-4
MB 680-614787/2
LCS 680-614787/3
LCSD 680-614787/4
MW-104
Method Blank
Lab Control Sample
Lab Control Sample Dup
Total/NA
Total/NA
Total/NA
Total/NA
Water
Water
Water
Water
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
300.0-1993 R2.1
General Chemistry
Analysis Batch: 312484
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-182269-1
680-182269-2
680-182269-3
680-182269-4
MB 180-312484/22
LCS 180-312484/21
LCSD 180-312484/42
FO-2
MW-31
MW-103
MW-104
Method Blank
Lab Control Sample
Lab Control Sample Dup
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Total/NA
Water
Water
Water
Water
Water
Water
Water
OIA-1677
OIA-1677
OIA-1677
OIA-1677
OIA-1677
OIA-1677
OIA-1677
Eurofins TestAmerica, Savannah
Page 9 of 27 4/14/2020

Lab Chronicle
Client: Civil & Environmental Consultants Inc Job ID: 680-182269-1
Project/Site: Alcoa - Badin, NC
Client Sample ID: FO-2
Date Collected: 03/30/20 11:15
Date Received: 04/01/20 15:30
Lab Sample ID: 680-182269-1
Matrix: Water
Prep Type
Batch Batch
Type Method
Run
Dil Initial Final Batch Prepared
Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 614027 04/05/20 02:41 UI TAL SAV
Instrument ID: CICK
Analysis OIA-1677
Instrument ID: ALPKEM2
1
312484 04/09/20 08:41 CAK TAL PIT
Client Sample ID: MW-31
Date Collected: 03/30/20 13:00
Date Received: 04/01/20 15:30
Lab Sample ID: 680-182269-2
Matrix: Water
Prep Type
Batch Batch Dil Initial Final Batch Prepared
Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 614461 04/08/20 20:16 CS TAL SAV
Instrument ID: CICH
Analysis OIA-1677
Instrument ID: ALPKEM2
1 312484 04/09/20 08:43 CAK TAL PIT
Client Sample ID: MW-103
Date Collected: 03/30/20 13:50
Date Received: 04/01/20 15:30
Lab Sample ID: 680-182269-3
Matrix: Water
Prep Type
Batch Batch Dil Initial Final Batch Prepared
Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 614461 04/08/20 20:29 CS TAL SAV
Instrument ID: CICH
Analysis OIA-1677
Instrument ID: ALPKEM2
Client Sample ID: MW-104
Date Collected: 03/30/20 14:40
Date Received: 04/01/20 15:30
1
312484 04/09/20 08:45 CAK TAL PIT
Lab Sample ID: 680-182269-4
Matrix: Water
Prep Type
Batch Batch Dil Initial Final Batch Prepared
Type Method Run Factor Amount Amount Number or Analyzed Analyst Lab
Total/NA
Total/NA
Analysis 300.0-1993 R2.1 1 5 mL 5 mL 614787 04/10/20 18:38 CS TAL SAV
Instrument ID: CICH
Analysis OIA-1677
Instrument ID: ALPKEM2
1
312484 04/09/20 08:47 CAK TAL PIT
Laboratory References:
SC0103 = Eurofins Lancaster Laboratories Env LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL [phone]
TAL SAV = Eurofins TestAmerica, Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins TestAmerica, Savannah
Page 10 of 27 4/14/2020

%s eurofins
Lancaster Laboratories
Environmental
2025 New Nola. Pihe, Lancaster, PA 17601 . 717-056-2300 . Fae:1173564766 . www.EunlnsVS.contLanc LabsEnv
r>S
ANALYSIS REPORT
Prepared by: Prepared for:
Eurofins Lancaster Laboratories Environmental
2425 New Holland Pike
Lancaster, PA 17601
TestAmerica North Canton
4101 Shuffel Street NW
North Canton OH 44720
Report Date: April 10, 2020 11:33
Project: Alcoa - Badin, NC
Account #: 01042
Group Number: 2094784
State of Sample Origin: NC
Electronic Copy To TestAmerica Attn: Beth Daughtry
Electronic Copy To TestAmerica Attn: Sheila Hoffman
Respectfully Submitted,
Or -we
Kay Hower
[phone]
To view our laboratory's current scopes of accreditation please go to https://www.eurofinsus.com/environment-
test i n g/I a b o rato ri a s/e u rof i n s-I a n ca ste r-I a bo rato ri es-e n v i ro n m e nta I /certifications -and -a ccred i tat i o n s-eurofins-1 a n ca ste r-I a b o rato ri a s-
environmental/ . Historical copies may be requested through your project manager.
FPa 1114ff1 7
4/14/2020

%s eurofins
Lancaster Laboratories
Environmental
•
2025 New Holland Pike Lancaster, PP 1T66i . 7174$$-2$$$ . FAX; 717i6647ss . www.EurelmsLla,conJLanc LabsEnv
SAMPLE INFORMATION
Client Sample Description
FO-2 (680-182269-1) Water
MW-31 (680-182269-2) Water
MW-103 (680-182269-3) Water
MW-104 (680-182269-4) Water
Sample Collection ELLE#
Date/Time
03/30/2020 11:15 1292423
03/30/2020 13:00 1292424
03/30/2020 13:50 1292425
03/30/2020 14:40 1292426
The specific methodologies used in obtaining the enclosed analytical results are indicated on the Laboratory
Sample Analysis Record.
FPa '$4Sfi 7
4/14/2020

eurofins
Lancaster Laboratories
Environmental
Analysis Report
2425 New Holland Pace, Lancaster, HA10601 . T1Y-656.2300 • Fax: [phone]T66 . www.EumNnalA.conllLancLaOSEno
Sample Description:
Project Name:
Submittal Date/Time:
Collection Date/Time:
FO-2 (680-182269-1) Water
Alcoa - Badin, NC
Alcoa - Badin, NC
04/03/2020 09:57
03/30/2020 11:15
TestAmerica North Canton
ELLE Sample #: WW 1292423
ELLE Group #: 2094784
Matrix: Water
CAT
No. Analysis Name
Wet Chemistry
12823 Total Cyanide (water)
CAS Number
ASTM D7511 -12
57-12-5
Result
mg/I
N.D.
Method
Detection Limit*
mg/I
0.0020
Limit of
Quantitation
mg/I
0.0060
Dilution
Factor
1
CAT Analysis Name
No.
12823 Total Cyanide (water)
Laboratory Sample Analysis Record
Method
ASTM D7511 -12
Trial# Batch# Analysis
Date and Time
1 20099123101A 04/08/2020 14:08
Analyst Dilution
Factor
Joseph E McKenzie 1
*=This limit was used in the evaluation of the final result
FPa i33(*1 7
4/14/2020

eurofins
Lancaster Laboratories
Environmental
Analysis Report
2425 New Holland Pace, Lancaster, HA10601 . T1Y-656.2300 • Fax: [phone]T66 . www.EumNnalA.conllLancLaOSEno
Sample Description:
Project Name:
Submittal Date/Time:
Collection Date/Time:
MW-31 (680-182269-2) Water
Alcoa - Badin, NC
Alcoa - Badin, NC
04/03/2020 09:57
03/30/2020 13:00
TestAmerica North Canton
ELLE Sample #: WW 1292424
ELLE Group #: 2094784
Matrix: Water
CAT
No. Analysis Name
Wet Chemistry
12823 Total Cyanide (water)
CAS Number
ASTM D7511 -12
57-12-5
Result
mg/I
N.D.
Method
Detection Limit*
mg/I
0.0020
Limit of
Quantitation
mg/I
0.0060
Dilution
Factor
1
CAT Analysis Name
No.
12823 Total Cyanide (water)
Laboratory Sample Analysis Record
Method
ASTM D7511 -12
Trial# Batch# Analysis
Date and Time
1 20099123101A 04/08/2020 14:05
Analyst Dilution
Factor
Joseph E McKenzie 1
*=This limit was used in the evaluation of the final result
FPa'F4ff1l7
4/14/2020

eurofins
Lancaster Laboratories
Environmental
Analysis Report
2425 New Holland Pace, Lancaster, PA 10601 . 212-656.2300 . Faz: 117.656.6T6fi . www.EumNnslA.comlLancLalasEno
Sample Description:
Project Name:
Submittal Date/Time:
Collection Date/Time:
MW-103 (680-182269-3) Water
Alcoa - Badin, NC
Alcoa - Badin, NC
04/03/2020 09:57
03/30/2020 13:50
TestAmerica North Canton
ELLE Sample #: WW 1292425
ELLE Group #: 2094784
Matrix: Water
CAT
No. Analysis Name
Wet Chemistry
12823 Total Cyanide (water)
CAS Number
ASTM D7511 -12
57-12-5
Result
mg/I
N.D.
Method
Detection Limit*
mg/I
0.0020
Limit of
Quantitation
mg/I
0.0060
Dilution
Factor
1
CAT Analysis Name
No.
12823 Total Cyanide (water)
Laboratory Sample Analysis Record
Trial# Batch# Analysis
Date and Time
ASTM D7511 -12 1 20099123101A 04/08/2020 14:01
Method
Analyst Dilution
Factor
Joseph E McKenzie 1
*=This limit was used in the evaluation of the final result
FP't4dfV7
4/14/2020

eurofins
Lancaster Laboratories
Environmental
Analysis Report
2425 New Holland Pace, Lancaster, PA 10601 . 212-656.2300 . Faz: 117.656.6T6fi . www.EumNnslA.comlLancLalasEno
Sample Description:
Project Name:
Submittal Date/Time:
Collection Date/Time:
MW-104 (680-182269-4) Water
Alcoa - Badin, NC
Alcoa - Badin, NC
04/03/2020 09:57
03/30/2020 14:40
TestAmerica North Canton
ELLE Sample #: WW 1292426
ELLE Group #: 2094784
Matrix: Water
CAT
No. Analysis Name
Wet Chemistry
12823 Total Cyanide (water)
CAS Number
ASTM D7511 -12
57-12-5
Result
mg/I
N.D.
Method
Detection Limit*
mg/I
0.0020
Limit of
Quantitation
mg/I
0.0060
Dilution
Factor
1
CAT Analysis Name
No.
12823 Total Cyanide (water)
Laboratory Sample Analysis Record
Trial# Batch# Analysis
Date and Time
ASTM D7511 -12 1 20099123101A 04/08/2020 13:51
Method
Analyst Dilution
Factor
Joseph E McKenzie 1
*=This limit was used in the evaluation of the final result
FPa t(*1 7
4/14/2020

tiff eurofins
Lancaster Laboratories
Environmental
Analysis Report
2425 New Holland Pace, Lancaster, HA1]601 . 217-656.2300 • Fax: 11]-656.676fi . www.EumNnsll$,coMLancLaOSEno
Quality Control Summary
Client Name: TestAmerica North Canton Group Number: 2094784
Reported: 04/10/2020 11:33
Matrix QC may not be reported if insufficient sample or site -specific QC samples were not submitted. In these situations, to demonstrate precision and accuracy at a
batch level, a LCS/LCSD was performed, unless otherwise specified in the method.
All Inorganic Initial Calibration and Continuing Calibration Blanks met acceptable method criteria unless otherwise noted on the Analysis Report.
Analysis Name
Batch number: 20099123101A
Total Cyanide (water)
Analysis Name
Batch number: 20099123101A
Total Cyanide (water)
Method Blank
Result MDL** LOQ
mg/I mg/I mg/I
Sample number(s): 1292423-1292426
N.D. 0.0020 0.0060
LCS/LCSD
LCS Spike LCS LCSD Spike LCSD LCS LCSD LCS/LCSD RPD RPD
Added Conc Added Conc %REC %REC Limits Max
mg/I mg/I mg/I mg/I
Sample number(s): 1292423-1292426
0.0400 0.0423 106 84-116
Unspiked (UNSPK) = the sample used in conjunction with the matrix spike
Analysis Name
Batch number: 20099123101A
Total Cyanide (water)
MS/MSD
Unspiked MS Spike MS MSD Spike MSD MS MSD MS/MSD RPD RPD
Conc Added Conc Added Conc %Rec %Rec Limits Max
mg/I mg/I mg/I mg/I mg/I
Sample number(s): 1292423-1292426 UNSPK: 1292426
N.D. 0.0200 0.0176 88 84-116
Laboratory Duplicate
Background (BKG) = the sample used in conjunction with the duplicate
Analysis Name
Batch number: 20099123101A
Total Cyanide (water)
BKG Conc DUP Conc DUP RPD DUP RPD Max
mg/I mg/I
Sample number(s): 1292423-1292426 BKG: 1292426
N.D. N.D. 0 (1) 20
*- Outside of specification
**-This limit was used in the evaluation of the final result for the blank
(1) The result for one or both determinations was less than five times the LOQ.
(2) The unspiked result was more than four times the spike added.
FP 1774ffi 7
4/14/2020

Eurofins TestAmerica, Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Phone: [phone] Fax: [phone]
0/2/- 2-
Chain of Custody Record
. eurafins
Environment Testing
TestAn'erica
Client Information (Sub Contract Lab)
Sampler:
Lab PM:
Hoffman, Sheila B
Carrier Tracking No(s):
COC No:
680-606489.1
Client Contact:
Shipping/Receiving
Phone:
E-Mai :
[e-mail]
State of Origin:
North Carolina
Page:
Page 1 of 1
Company:
Eurofins Lancaster Laboratories Env LLC
Accreditations Required (See note):
State - North Carolina (WW/SW); State Program - North C ...
Job #:
680-182269-1
Address:
2425 New Holland Pike, ,
Due Date Requested:
4/13/2020
Analysis Requested
Preservation Codes:
A -HCL M- Hexane
B - NaOH N - None
C - Zn Acetate O-AsNaO2
D - Nitric Acid P - Na204S
E - NaHSO4 Q - Na2SO3
F - McOH R - Na2S203
G - Amchlor S - H2SO4
H - Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J - DI Water V - MCAA
K - EDTA W - pH 4-5
L -EDA z- other(speciry)
Other:
City:
Lancaster
TAT Requested (days):
o
e u
-`
`:
SUB (ASTM 7511-12 - Total Cyanide)I ASTM 7511-121
Total Cyanide_.
3Total Number of containers
State, Zip:
PA, 17601
Phone:
717-656-2300(Tel)
PO #:'
Email:
WO #:
0
'a
0s
Project Name:
Alcoa - Badin, NC
Project #:
68023635
d
mf
Site:
SSOW#:
3 Field Filtered Sang
Sample Identification - Client ID (Lab ID)
Sample Date
Sample
Time
Sample
Type
(C=comp,
G=grab)
Matrix
(w-warer,s-gaud
o waaretae,
eriIasae.A Jr)
Special Instructions/Note:
Preservation Code:
FO-2 (680-182269-1)
3/30/20
11:15
Eastern
Water
X
1
Price from Lancaster is $36 per sample
MW-31 (680-182269-2)
3/30/20
13:00
Eastern
Water
X
1
Price from Lancaster is $36 per sample
MW-103 (680-182269-3)
3/30/20
13:50
Eastern
Water
X
1
Price from Lancaster is $36 per sample
MW-104 (680-182269-4)
3/30/20
14:40
Eastern
Water
X
1
Price from Lancaster is $36 per sample
Note: Since laboratory accreditations are subject to change, Eurofins TestAmerica places the ownership of method, analyte & accreditation comp tan e upon out subcontract laborato ies. This sample shipment is forwarded under cha'n-of-custody. If the laboratory does not currently
maintain accreditation in the State of Origin listed above for analysis/tests/matrix being analyzed, the samples must be shipped back to the Eurofins TestAmerica laboratory or other Instructions will be provided. Any changes to accreditation status should be brought to Eurofins
TestAmerica attention immediately. If all requested accreditations are current to date, return the signed Chain of Custody attesting to said complican e to Eurofins TestAmerica.
Possible Hazard identification
Unconfirmed
Sample Disposal (A fee may be assessed if samples are retained longer than 1 month)
Return To Client I I Disposal By Lab Archive For Months
Deliverable Requested: I, II, III, IV, Other (specify) Primary Deliverable Rank: 2
Special Instructions/QC Requirements:
Em ty Kit ' quished by: 'Date:
Time: (Method
of Shipment:
li ish d bpi
Cy/...T.. C)
C
Received by:
Date/rime:
Company
is d by:
Date/Time:
Company
Received by:
Date/Time:tAl2.70
Company
Relinquished by:
Date/Tme:
Company
Reciv�
D e )
��++o pa
Custody Seals Intact:
A Yes 4 No
Custody Seal No.:
r'rs.-.. Ao ...1..LN+f L,
le Temperatures) °C and Other Remarks: �`/[ 111111
v A ,A A , •
Ver: 01/16/201

earo1-Ens
Lancaster Laboratories
Environmental
Client: TestAmerica
Sample Administration
Receipt Documentation Log iiiiiiH11110111I IIIIII11111101111I
Group Number(s): 4-?44—
Doc Log ID: 280903
Delivery and Receipt Information
Delivery Method: Fed Ex
Number of Packages: 1
Arrival Date: 04/03/2020
Number of Projects: 1
Arrival Condition Summary
Shipping Container Sealed:
Custody Seal Present:
Custody Seal Intact:
Samples Chilled:
Paperwork Enclosed:
Samples Intact:
Missing Samples:
Extra Samples:
Discrepancy in Container Qty on COC:
Unpacked by Tamara Lugardo
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
Sample IDs on COC match Containers:
Sample Date/Times match COC:
Total Trip Blank Qty:
Air Quality Samples Present:
0
Yes
Yes
No
Samples Chilled Details
Thermometer Types: DT = Digital (Temp. Bottle) IR = Infrared (Surface Temp)
Cooler # Thermometer ID
1 46730061WS
Corrected Temp Therm. Type
0.1 IR
Ice Type Ice Present?
Wet Y
All Temperatures in °C.
Ice Container Elevated Temp?
Loose/Bag N
Page 1 of 1
2425•New Holland Pike
Lancaster, PA 17605-2425
FPalscefbqSfil7
T 717-656-2300
F 717-656-2681
www.LancTiir4.abo. Am

el: eurofins
Lancaster Laboratories
Environmental
Explanation of Symbols and Abbreviations
The following defines common symbols and abbreviations used in reporting technical data:
BMQL
C
cfu
CP Units
F
g
IU
kg
L
Ib.
m3
meq
mg
ppm
ppb
Dry weight
basis
Below Minimum Quantitation Level
degrees Celsius
colony forming units
cobalt-chloroplatinate units
degrees Fahrenheit
gram(s)
International Units
kilogram(s)
liter(s)
pound(s)
cubic meter(s)
milliequivalents
milligram(s)
mL
MPN
N.D.
ng
NTU
pg/L
RL
TNTC
Ng
pL
umhos/cm
MCL
milliliter(s)
Most Probable Number
non -detect
nanogram(s)
nephelometric turbidity units
picogram/liter
Reporting Limit
Too Numerous To Count
microgram(s)
microliter(s)
micromhos/cm
Maximum Contamination Limit
less than
greater than
parts per million - One ppm is equivalent to one milligram per kilogram (mg/kg) or one gram per million grams. For
aqueous liquids, ppm is usually taken to be equivalent to milligrams per liter (mg/I), because one liter of water has a weight
very close to a kilogram. For gases or vapors, one ppm is equivalent to one microliter per liter of gas.
parts per billion
Results printed under this heading have been adjusted for moisture content. This increases the analyte weight
concentration to approximate the value present in a similar sample without moisture. All other results are reported on an
as -received basis.
Analytical test results meet all requirements of the associated regulatory program (i.e., NELAC (TNI), DoD, and ISO 17025) unless
otherwise noted under the individual analysis.
Measurement uncertainty values, as applicable, are available upon request.
Tests results relate only to the sample tested. Clients should be aware that a critical step in a chemical or microbiological analysis is the
collection of the sample. Unless the sample analyzed is truly representative of the bulk of material involved, the test results will be
meaningless. If you have questions regarding the proper techniques of collecting samples, please contact us. We cannot be held
responsible for sample integrity, however, unless sampling has been performed by a member of our staff.
This report shall not be reproduced except in full, without the written approval of the laboratory.
Times are local to the area of activity. Parameters listed in the 40 CFR Part 136 Table II as "analyze immediately" are not performed within
15 minutes.
WARRANTY AND LIMITS OF LIABILITY - In accepting analytical work, we warrant the accuracy of test results for the sample as submitted.
THE FOREGOING EXPRESS WARRANTY IS EXCLUSIVE AND IS GIVEN IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR
IMPLIED. WE DISCLAIM ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING A WARRANTY OF FITNESS FOR
PARTICULAR PURPOSE AND WARRANTY OF MERCHANTABILITY. IN NO EVENT SHALL EUROFINS LANCASTER LABORATORIES
ENVIRONMENTAL, LLC BE LIABLE FOR INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES INCLUDING, BUT NOT
LIMITED TO, DAMAGES FOR LOSS OF PROFIT OR GOODWILL REGARDLESS OF (A) THE NEGLIGENCE (EITHER SOLE OR
CONCURRENT) OF EUROFINS LANCASTER LABORATORIES ENVIRONMENTAL AND (B) WHETHER EUROFINS LANCASTER
LABORATORIES ENVIRONMENTAL HAS BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. We accept no legal
responsibility for the purposes for which the client uses the test results. No purchase order or other order for work shall be accepted by
Eurofins Lancaster Laboratories Environmental which includes any conditions that vary from the Standard Terms and Conditions, and
Eurofins Lancaster Laboratories Environmental hereby objects to any conflicting terms contained in any acceptance or order submitted by
client.
Pagnefilt
4/14/2020

eu raf i ns
Lancaster Laboratories
Environmental
Data Qualifiers
Qualifier Definition
C Result confirmed by reanalysis
D1 Indicates for dual column analyses that the result is reported from column 1
D2 Indicates for dual column analyses that the result is reported from column 2
E Concentration exceeds the calibration range
K1 Initial Calibration Blank is above the QC limit and the sample result is less than the LOQ
K2 Continuing Calibration Blank is above the QC limit and the sample result is less than the LOQ
K3 Initial Calibration Verification is above the QC limit and the sample result is less than the LOQ
K4 Continuing Calibration Verification is above the QC limit and the sample result is less than the LOQ
J (or G, I, X) Estimated value >= the Method Detection Limit (MDL or DL) and < the Limit of Quantitation (LOQ or RL)
P Concentration difference between the primary and confirmation column >40%. The lower result is reported.
P^ Concentration difference between the primary and confirmation column > 40%. The higher result is reported.
U Analyte was not detected at the value indicated
✓ Concentration difference between the primary and confirmation column >100%. The reporting limit is raised
due to this disparity and evident interference.
W The dissolved oxygen uptake for the unseeded blank is greater than 0.20 mg/L.
Z Laboratory Defined - see analysis report
Additional Organic and Inorganic CLP qualifiers may be used with Form 1 reports as defined by the CLP methods.
Qualifiers specific to Dioxin/Furans and PCB Congeners are detailed on the individual Analysis Report.
Pag@ /1 Olt
4/14/2020

Eurofins TestAmerica, Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Phone: [phone] Fax: [phone]
0/2/- 2-
Chain of Custody Record
ti eurafins
Environment Testing
TestAn'erica
Client Information (Sub Contract Lab)
Sampler:
Lab PM:
Hoffman, Sheila B
Carrier Tracking No(s):
COC No:
680-606489.1
Client Contact:
Shipping/Receiving
Phone:
E-Mai :
[e-mail]
State of Origin:
North Carolina
Page:
Page 1 of 1
Company:
Eurofins Lancaster Laboratories Env LLC
Accreditations Required (See note):
State - North Carolina (WW/SW); State Program - North C ...
Job #:
680-182269-1
Address:
2425 New Holland Pike, ,
Due Date Requested:
4/13/2020
Analysis Requested
Preservation Codes:
A -HCL M- Hexane
B - NaOH N - None
C - Zn Acetate O-AsNaO2
D - Nitric Acid P - Na204S
E - NaHSO4 Q - Na2SO3
F - McOH R - Na2S203
G - Amchlor S - H2SO4
H - Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J - DI Water V - MCAA
K - EDTA W - pH 4-5
L -EDA z- other(speciry)
Other:
City:
Lancaster
TAT Requested (days):
o
e u
-`
`:
SUB (ASTM 7511-12 - Total Cyanide)I ASTM 7511-121
Total Cyanide_.
3Total Number of containers
State, Zip:
PA, 17601
Phone:
717-656-2300(Tel)
PO #:'
Email:
WO #:
0
'a
0s
Project Name:
Alcoa - Badin, NC
Project #:
68023635
d
mf
Site:
SSOW#:
3 Field Filtered Sang
Sample Identification - Client ID (Lab ID)
Sample Date
Sample
Time
Sample
Type
(C=comp,
G=grab)
Matrix
(w-warer,s-gaud
o waaretae,
eriIasae,Mar)
Special Instructions/Note:
Preservation Code:
FO-2 (680-182269-1)
3/30/20
11:15
Eastern
Water
X
1
Price from Lancaster is $36 per sample
MW-31 (680-182269-2)
3/30/20
13:00
Eastern
Water
X
1
Price from Lancaster is $36 per sample
MW-103 (680-182269-3)
3/30/20
13:50
Eastern
Water
X
1
Price from Lancaster is $36 per sample
MW-104 (680-182269-4)
3/30/20
14:40
Eastern
Water
X
1
Price from Lancaster is $36 per sample
Note: Since laboratory accreditations are subject to change, Eurofins TestAmerica places the ownership of method, analyte & accreditation comp tan e upon out subcontract laborato ies. This sample shipment is forwarded under cha'n-of-custody. If the laboratory does not currently
maintain accreditation in the State of Origin listed above for analysis/tests/matrix being analyzed, the samples must be shipped back to the Eurofins TestAmerica laboratory or other Instructions will be provided. Any changes to accreditation status should be brought to Eurofins
TestAmerica attention immediately. If all requested accreditations are current to date, return the signed Chain of Custody attesting to said complican e to Eurofins TestAmerica.
Possible Hazard identification
Unconfirmed
Sample Disposal (A fee may be assessed if samples are retained longer than 1 month)
Return To Client I I Disposal By Lab Archive For Months
Deliverable Requested: I, II, III, IV, Other (specify) Primary Deliverable Rank: 2
Special Instructions/QC Requirements:
Em ty Kit ' quished by: 'Date:
Time: (Method
of Shipment:
li ish d bpi
Cy/...T.. C)
C
Received by:
Date/rime:
Company
is d by:
Date/Time:
Company
Received by:
Date/Time:tAl2.70
Company
Relinquished by:
Date/Tme:
Company
Reciv�
D e )
��++o pa
Custody Seals Intact:
A Yes 4 No
Custody Seal No.:
,1 r9ry L r1
le Temperatures) °C and Other Remarks: �`/[ 111111
7 v A ,A A , •
Ver: 01/16/201

Chain of Custody Record
Eurofins TestAmerica, Savannah
COC No
680-114081-437331
Page
Page 1 of 1
Y
Preservation Codes:
A - HCL M • Horan
B - NaOH N - None
C - Zn Acerale O - AsNaO2
0 • Ndnc And P - Na204S
E - NeHSO4 O - Na2SO3
F - McOH R - Na25203
G - Amchlor S • H2SO4
H - Ascart,rc Acld T - TSP 0odecahydrete
I - Ice U - Acetone
J - D1 Water V • MCAA
K•EDTA W-pH4-5
- EDA 2 • other isoeci1yl
Other
Special In struction sINote:
f
51111111
pojsnJ
to
u�e4
RiiTg
s
EU
a :4
m
Special Instructions/0C Requirements
Empty Kit Relinquished by: parr- Time �.., _ IMethoc; .••ornent1
a.
' pE
U
q
U
Q J
n
C
a
r ,
v
z
rn
it
Analysis Requested
Iaule5103 j0 JaqurnN Rio'
`
m
H
N
1101
b'
C
�
�-'
m
n -+
b
h -
N R
Lac PM
Hoffman, Sheila B
E Mao
Shelia Koffman©testamerlcainc.com
eA
¢ c
m
�:irn '') rJ01' Q�l y.
,/_.
_____�
N 1Q-9`
apuaniri - OBL wd0a0 OK
X
k
as j apiurRD • aa+A GL4S
----______-.1
qCC
ci
OalarTune !Company
Custody Soaks intact: Custody Seal No'
.1 Yes A No
(ON io °SA) QSWISM Well
4.,
Z
to
ON JO soA} 21dweg paJa1H9 Akala
)"^'
,-+--'
[Deliverable Requesled: I, II, III, IV, Other (specify)
1
7
U
d
O
G
6
E S
V,
TAT Requested (days):
PO ti
Purchase Order not required
`
m
Preservation Coda:
m
m
t
m
a
(1
St
O
ate'
e�
LE
T
q
E \
W�d
TOa
c
2 as
a N
l n 1
Q
LJ
a
Aio
n3
'�'
a` io
VI`n
O
a
m
b
�-
m
Si
5
L
n
8
5
Toub
z
5
ac
Address
2704 Cherokee Farm Way Suite 101
y
a.
uX
r91a1e.Z+
TN, 37920
b
[mall
mwordenlr7Q cecinc corr.
Z
?
rem1.
x
- a
O U
11v
4
Sample Identification
l
C in
.
l
3
0
•ck
E
c�
a
a
ro m
+a
-0
in
fl
4
Client information
em Contact
Michael Warden
Page 23 of 27
4/14/2020

Job #.
680-182269-1
Preservation Codes:
A - HCL M - Hexane
B -NaOH N - None
C - Zn Acetate 0 - AsNa02
D - Nitric Acid P - Na204S
E - NaHSO4 Q - Na2S03
F-Me0H R-Na2S203
G - Amchlor S - H2SO4
H - Ascorbic Acid T - TSP Dodecahydrate
I - Ice U - Acetone
J - DI Water V -MCAA
K - EDTA W - pH 4-5
L - EDA Z - other (specify)
Other:
Special Instructions/Note:
Note: Since laboratory accreditations are subject to change. Eurofins TestAmerica places the ownership of method, analyte & accreditation compliance upon out subcontract laboratories. This sample shipment is forwarded under chain -of -custody. If the laboratory does not currently
maintain accreditation in the State of Origin listed above for analysis/tests/matrix being analyzed, the samples must be shipped back to the Eurofins TestAmerica Laboratory or other instructions will be provided. Any changes to accreditation status should be brought to Eurofins
TestAmerica attention immediately. If all requested accreditations are current to date. return the signed Chain of Custody attesting to said complicance to Eurofins TestAmerica.
Sample Disposal (A fee may be assessed if samples are retained longer than 1 month)
I I Return To Client I I Disposal By Lab I I Archive For Months
Special Instructions/QC Requirements:
Empty Kit Relinquished by (Date: (Time: Method of Shipment:
Company .
L ;
Company
Company
Cooler Temperature(s) °C and Other Remarks:
e.
rE
I)
a)a)
0
0
E
t
a)
0
Accreditations Required (See note):
State - North Carolina (WW/SW); State Program - North C ...
Analysis Requested
siau!eluoo;o JagwnN lelol
�
r—
),)
1.1
'Ede"
Received by
Received by.
Eurofins TestAmerica, Savannah
5102 LaRoche Avenue r� Chain of Custody Record
Savannah, GA 31404
Phone: [phone] Fax: [phone]
(uogaafuI moIj) eau'apiuel3 (aa.A LL9L
X
X
X
X
g
U
Corhpany
Company
Custody Seal No
(oN JO SEA) aSWISW uuoJad
Possible Hazard Identification
Unconfirmed
Deliverable Requested: I, II, III, IV, Other (specify) Primary Deliverable Rank: 2
(oN JO saA) aidweS paJall!d Pla!d
Company:
TestAmerica Laboratories, Inc.
Due Date Requested:
4/13/2020
TAT Requested (days):
Project #:
68023635
Matrix
(w=werer, s=sord.
o-wesreion.
er=T!ssue, A=ar)
Preservation Code:
is
m
Water
Water
Dal liwili
'E ?
o
N
0
y a
U
R 1- m
II
(n O 0
a)
E
( R-
11:15
Eastern
13:00
Eastern
13:50
Eastern
14:40
Eastern
a
3
cn
Sample Date
0
CV
O
(7
o
CVN
O
M
3/30/20
O
O
(-)
Relinquished by: Ci7liro4.3cLLAciSL,
Relinquished by: " v
r
Q
Address.
301 Alpha Drive. RIDC Park.
r
m
tj it
StPA,ate. Zip -- -- I
15238
Phone:
412-963-7058(Tel) 412-963-2468(Fax)
Project Name:
Alcoa - Badin, NC
iD
Sample Identification - Client ID (Lab ID)
FO-2(680-182269-1)
MW-31 (680-182269-2)
MW-103 (680-182269-3)
IMW-104 (680-182269-4)
Custody Seals Intact:
Yes 1 No
Page 24 of 27
4/14/2020

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-182269-1
Login Number: 182269
List Number: 1
Creator: Laughlin, Paul D
Question
List Source: Eurofins TestAmerica, Savannah
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey N/A
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. False
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. N/A
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is N/A
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Refer to Job Narrative for details.
Eurofins TestAmerica, Savannah
Page 25 of 27 4/14/2020

Login Sample Receipt Checklist
Client: Civil & Environmental Consultants Inc Job Number: 680-182269-1
Login Number: 182269
List Number: 2
Creator: Say, Thomas C
Question
List Source: Eurofins TestAmerica, Pittsburgh
List Creation: 04/03/20 12:40 PM
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey True
meter.
The cooler's custody seal, if present, is intact. True
Sample custody seals, if present, are intact. True
The cooler or samples do not appear to have been compromised or True
tampered with.
Samples were received on ice. True
Cooler Temperature is acceptable. True
Cooler Temperature is recorded. True
COC is present. True
COC is filled out in ink and legible. True
COC is filled out with all pertinent information. True
Is the Field Sampler's name present on COC? True
There are no discrepancies between the containers received and the COC. True
Samples are received within Holding Time (excluding tests with immediate True
HTs)
Sample containers have legible labels. True
Containers are not broken or leaking. True
Sample collection date/times are provided. True
Appropriate sample containers are used. True
Sample bottles are completely filled. True
Sample Preservation Verified. True
There is sufficient vol. for all requested analyses, incl. any requested True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is True
<6mm (1/4").
Multiphasic samples are not present. True
Samples do not require splitting or compositing. True
Residual Chlorine Checked. N/A
Eurofins TestAmerica, Savannah
Page 26 of 27 4/14/2020

Accreditation/Certification Summary
Client: Civil & Environmental Consultants Inc
Project/Site: Alcoa - Badin, NC
Job ID: 680-182269-1
Laboratory: Eurofins TestAmerica, Savannah
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 269 12-31-20
Laboratory: Eurofins TestAmerica, Pittsburgh
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 434 01-01-21
Eurofins TestAmerica, Savannah
Page 27 of 27 4/14/2020

Focused Treatability Study Work Plan — Badin Business Park
Appendix B EVOQUA Standard Analytical Testing Regime
EHS Support LLC

Focused Treatability Study Work Plan — Badin Business Park
Purolite
Special Resin Application — Minimum Required Information
Date
Customer
Contact
Email
Location
Phone
Process Design Requirements (describe end use - potable, boiler feed, mining, etc.)
Water usage
Comments
Max. Service Flow Rate
gpm
Average Daily Usage
gpd
pH Range Limitations
Specific ion to be removed
Target in treated water (ppb)
Target in treated water (ppb)
Specific ion to be removed
Specific ion to be removed
Target in treated water (ppb)
Other limits on treated water
Influent Solution (describe pretreatment present — MM filter, ACF, RO, etc.)
EHS Support LLC

Focused Treatability Study Work Plan — Badin Business Park
0 Purolite
Influent Analysis
Parameter
Unit
Value
Comments
Calcium, Ca
ppm
Magnesium, Mg
ppm
Total hardness as CaCO3
ppm
Sodium, Na
ppm
Potassium, K
ppm
Barium, Ba
ppm
Strontium, Sr
ppm
Iron, Fe
ppm
Manganese, Mn
ppm
Radium, Ra
pCi/L
Sulfate, SO4
ppm
Nitrate as NO3
ppm
Nitrate as N
ppm
Nitrite as N
ppm
Bicarbonate, HCO3
ppm
Bromide, Br
ppm
Chloride, CI
ppm
Chlorate, C103
ppm
Fluoride, F
ppm
Boron, B
ppm
Silica, SiO2
ppm
Selenate (SeO42")
ppb
Detection level to at least 5 ppb
Selenite (Na2SeO3)
ppb
Detection level to at least 5 ppb
Uranium, U
ppb
Detection level to at least 5 ppb
Molybdate, Mo
ppb
Detection level to at least 5 ppb
Antimony, Sb
ppb
Detection level to at least 5 ppb
Chromium-6, Cr-6
ppb
Detection level to at least 5 ppb
Total As
ppb
As (III)
ppb
Vanadium, V
ppb
Detection level to at least 10 ppb
Phosphate, PO4
ppb
Detection level to at least 10 ppb
Perchlorate
ppb
Detection to at least 1 ppb
Other oxyanions
ppb
EHS Support LLC

Focused Treatability Study Work Plan — Badin Business Park
Parameter
Unit
Value
Comments
pH
0il & Grease
ppm
TOC
ppm
Free Chlorine
ppm
TSS
ppm
TDS
ppm
Conductivity
µS/cm
Temperature
°C
Parameter
Unit
Value
Comments
Other Metals:
Bismuth, Bi
ppb
Cadmium, Cd
ppb
Copper, Cu
ppb
Cobalt, Co
ppb
Germanium, Ge
ppb
Gold, Au
ppb
Rhenium, Re
ppb
Rhodium, Rh
ppb
Lead, Pb
ppb
Mercury, Hg
ppb
Nickel, Ni
ppb
Platinum, Pt
ppb
Scandium
ppb
Silver, Ag
ppb
Tantalum
ppb
Tin, Sn
ppb
Tungsten, W
ppb
Zinc, Zn
ppb
EHS Support LLC