1804_DukeMarshall_DryAshLF_Q1 2023_GWMR_FID1807388_20230613

(' DUKE
ENERGY-.
June 13, 2023
North Carolina Department of Environmental Quality
Division of Waste Management
Solid Waste Section
2090 U.S. Highway 70
Swannanoa, NC 28778
Attn: Ms. Sarah Moutos (submitted electronically)
Re: Semiannual Water Quality Monitoring Report
Dry Ash Landfill
Permit No.: 1804-INDUS-1983
Marshall Steam Station
Terrell, North Carolina 28682
Dear Ms. Moutos:
526 South Church St.
Charlotte, NC 28202
Mailing Address
P.O. Box 1006
Mail Code EC 13K.
Charlotte, NC 28201-1006
Duke Energy is providing the result of the semi-annual water quality monitoring for the Duke Energy Carolinas,
Marshall Steam Station, Dry Ash Landfill, located near Terrell, North Carolina.
On February 15, 2023, groundwater samples were collected in accordance with the facility's Water Quality
Monitoring Plan (WQMP) approved April 3, 2020.
A summary of the groundwater sampling field and analytical results is presented in Table 5. The analytical
results for the constituents are compared to the groundwater standards found in Title 15A NCAC 02L .0202
(2L Standards). Results with values that attain or exceed the 2L Standards (or outside of 2L Standard range
for pH) are indicated on Table 5 by bold font. A summary of the analytical results that attain or exceed the 2L
Standards (or outside of 2L Standard range for pH) and a preliminary analysis of the cause and significance
of such occurrences are presented in Table 6. Field sampling forms, chain of custody (COC) forms, laboratory
reports are included in Appendix A and B.
Groundwater locations at Marshall Dry Ash Landfill are sampled semiannually during February and August.
The next water quality monitoring event is planned for August 2023 with a report of monitoring results to follow.
If you need additional information regarding this submittal do not hesitate to email or call me at
Ashley. HealyCcDduke-energy.com or [phone].
Respectfully,
Ashley Healy, P.G.
Environmental Services
Attachments: Semiannual Water Quality Monitoring Report — February 2023 Sampling Event — Dry Ash Landfill
(SynTerra, June 2023)
cc (via e-mail): Claire Osborn, NCDEQ
Elizabeth Werner, NCDEQ
Sherri Stanley, NCDEQ
www.duke-energy.com Page 1 of 2

Ed Mussler, NCDEQ
Dan Zakary, Duke Energy
Rawya Al Dulaimi, Duke Energy
Scott La Sala, Duke Energy
Tyler Hardin, Duke Energy
Ed Sullivan, Duke Energy
www.duke-energy.com Page 2 of 2

DENR USE ONLY ❑Paper Report [-]Electronic Data - Email CD (data loaded: Yes / No) Doc/Event #:
NC DENR I I Environmental Monitoring
Division of Waste Management - Solid Waste Reporting Form
Notice: This form and any information attached to it are "Public Records" as defined in NC General Statute 132-1. As such, these documents are
available for inspection and examination by any person upon request (NC General Statute 132-6).
Instructions:
• Prepare one form for each individually monitored unit.
• Please type or print legibly.
• Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water standards. The notification
must include a preliminary analysis of the cause and significance of each value. (e.g. naturally occurring, off -site source, pre-existing
condition, etc.).
• Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits.
• Attach a notification table of any methane gas values that attain or exceed explosive gas levels. This includes any structures on or nearby the
facility (NCAC 13B .1629 (4)(a)(i).
• Send the original signed and sealed form, any tables, and Electronic Data Deliverable to: Compliance Unit, NCDENR-DWM, Solid Waste
Section, 1646 Mail Service Center, Raleigh, NC 27699-1646.
Solid Waste Monitoring Data Submittal Information
Name of entity submitting data (laboratory, consultant, facility owner):
Duke Energy Carolinas, LLC
Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address:
Name: Thomas Colton
E-mail: tcolton synterracorp.com
Phone: [phone]
NC Landfill Rule: Actual sampling dates (e.g.,
Facility name: Facility Address: Facility Permit# (.0500 or.1600) October 20-24, 2006)
Duke Energy Carolinas, LLC
Marshall Steam Station Terrell,
East NC-150 8104 .0500
Dry Ash Landfill Terrell, North Carolina 28682 February 15, 2023
Environmental Status: (Check all that apply)
❑ Initial/Background Monitoring ❑X Detection Monitoring ❑
of data submitted: (Check all that apply)
Groundwater monitoring data from monitoring wells ❑
Groundwater monitoring data from private water supply wells ❑
Leachate monitoring data
Surface water monitoring data ❑
Assessment Monitoring
Methane gas monitoring data
Corrective action data (specify)
Other(specify)
❑ Corrective Action
Notification attached?
❑
)( No. No groundwater or surface water standards were exceeded.
Yes, a notification of values exceeding a groundwater or surface water standard is attached. It includes a list of groundwater and surface water
monitoring points, dates, analytical values, NC 2L groundwater standard, NC 2B surface water standard or NC Solid Waste GWPS and
preliminary analysis of the cause and significance of any concentration.
❑ Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample
values and explosive methane gas limits.
Certification
To the best of my knowledge, the information reported and statements made on this data submittal and attachments are true and correct.
Furthermore, I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gas
levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there
are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment.
Craig Eady Senior Project Manager [phone]
Facility Representative Name (Print) Title (Area Code) Telephone Number
6/13/2023
Signature Date
148 River Street, Suite 220, Greenville, SC 29601
Facility Representative Address
C-1478 / North Carolina Corporation Number C-387
NC PE Firm License Number (if applicable effective May 1, 2009)
Revised 6/2009
Affix NC Licensed/ Professional Geologist Seal
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MARSHALL STEAM STATION
DRY ASH LANDFILL
PERMIT NO. 1804-INDUS
TITLE: SEMIANNUAL GROUNDWATER MONITORING REPORT
This document has been reviewed for accuracy and quality commensurate with the intended
application.
Prepared by:
Approved by:
Project Manager:
Date: 6/13/2023
Date: 6/13/2023
Licensed Geologist Seal:
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SynTerra
148 River Street, Suite 220
Greenville, SC 29601
North Carolina Geological Corporation Number C-387

17
Terra Science &Engineering Consultants
synsynterracorp.com
SEMIANNUAL
WATER QUALITY MONITORING REPORT
FEBRUARY 2023 SAMPLING EVENT
DRY ASH LANDFILL
PERMIT NO. 1804-INDUS)
MARSHALL STEAM STATION
8320 NC HIGHWAY 150E
TERRELL, NORTH CAROLINA
JUNE 13, 2023
PREPARED FOR
DUKE
ENERGY
DUKEENERGY CAROLINAS, LLC
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for Peer Review �!��CO•••..••�Paj\`�� Project Scientist
Thomas Colton
Project Manager

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshall Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
TABLE OF CONTENTS
SECTION PAGE
1.0 INTRODUCTION AND BACKGROUND..........................................................................1-1
1.1 Site and Landfill Information......................................................................................1-1
1.2 Hydrogeologic Setting................................................................................................1-1
1.3 Landfill Semi -Annual Monitoring Program.................................................................1-2
2.0 METHODS.................................................................................................................. 2-1
2.1 Sampling and Analysis Methods.................................................................................2-1
2.2 Regulatory Criteria.....................................................................................................2-1
2.3 Statement of Work.....................................................................................................2-1
3.0 RESULTS.....................................................................................................................3-1
3.1 Site Groundwater Flow...............................................................................................3-1
3.2 Analytical Results.......................................................................................................3-1
3.3 Quality Assurance/Quality Control.............................................................................3-1
4.0 REFERENCES...............................................................................................................4-1
LIST OF FIGURES
Figure 1 Site Location Map
Figure 2 Sample Locations
Figure 3 Water -Level Map — Surficial Flow Zone — February 2023
LIST OF TABLES
Table 1 Well Construction Summary
Table 2 Groundwater Monitoring Parameters
Table 3 Monitoring Location Summary Table
Table 4 Groundwater Seepage Velocities
Table 5 Groundwater Field Results and Analytical Detections
Table 6 Field and Analytical Results that Equal or Exceed Groundwater Quality Standards
LIST OF APPENDICES
Appendix A Field Sampling Forms
Appendix B Laboratory Report and Chain -of -Custody Forms
Appendix C Time Versus Constituent Concentrations Plots
May 2023 Page i
Project: 00.0083.55

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshall Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
LIST OF ACRONYMS
02L
15A NCAC 02L .0202(g) Groundwater Quality Standards
C&D
Construction and demolition
Duke Energy
Duke Energy Carolinas, LLC
Division
Division of Waste Management
DWM
Division of Waste Management
EDD
electronic data deliverable
Landfill
Dry Ash Landfill
Marshall
Marshall Steam Station
NCAC
North Carolina Administrative Code
NCDEQ
North Carolina Department of Environmental Quality
QA
quality assurance
QC
quality control
SAP
Sample and Analysis Groundwater Plan
Site
Marshall Steam Station
SW
Solid Waste
SWS
Solid Waste Section
TDS
Total dissolved solids
USEPA
U.S. Environmental Protection Agency
May 2023 Page H
Project: 00.0083.55

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshall Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
f��>• 1► >f 9.16111111,141111 9 IQ ► I_10 1113Uffel Ctcl :191110 L7
This semiannual report pertains to the Duke Energy Carolinas, LLC (Duke Energy) Marshall
Steam Station (Marshall, Site) Dry Ash Landfill and documents the results of the February 2023
Industrial Landfill (Landfill; Permit No. 1804-INDUS) groundwater monitoring event.
1.1 Site and Landfill Information
Duke Energy owns and operates Marshall Steam Station, located at 8320 INC Highway 150E in
Terrell, Catawba County, North Carolina (Figure 1).
The North Carolina Department of Environmental Quality (NCDEQ) Division of Waste
Management (Division) issued a permit to operate the Dry Ash Landfill in December 1983. The
Landfill consists of the following disposal areas:
• Fly ash disposal (two Phases): Phase I —14.5 acres (approximate) and Phase II — 46.2
acres (approximate).
o Excavation of Phase I was completed in March 2023.
• Asbestos disposal: 6.9 acres (approximate); permitted December 1987
• Construction and demolition (C&D) debris disposal: 2.75 acres (approximate); permitted
October 17, 1989.
These disposal areas were constructed as unlined landfills and are closed with soil covers and
groundwater monitoring.
1.2 Hydrogeologic Setting
The Landfill site is located within the Piedmont physiographic province (Piedmont). Piedmont
bedrock primarily consists of igneous and metamorphic bedrock. The fractured bedrock is
overlain by a mantle of unconsolidated material known as regolith. The regolith includes, where
present, the soil zone, a zone of weathered, decomposed bedrock known as saprolite, and
alluvium. Saprolite, the product of chemical and mechanical weathering of the underlying
bedrock, is typically composed of clay and coarser granular material up to boulder size and may
reflect the texture of the rock from which it was formed. The weathering product of granitic
rocks may be quartz -rich and sandy -textured, whereas rocks poor in quartz and rich in feldspar
and other soluble minerals form a more clayey saprolite (S&ME, 2020).
Groundwater at the Site typically occurs in three interconnected flow zones. The shallowest
groundwater flow zone — the surficial flow zone — occurs in the residual soil and/or the upper
section of saprolite. Beneath the surficial flow zone, the transition zone flow zone occurs in the
lower portions of the saprolite and partially weathered bedrock and is the most permeable part
of the Site hydrogeologic system. Bedrock underlies the transition zone and comprises the least
permeable flow zone of the Site hydrogeologic system, where groundwater flow occurs
May 2023 Page 1-1
Project: 00.0083.55

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshall Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
predominantly along fractures, joints, and faults. Groundwater is usually first encountered in
the surficial flow zone.
1.3 Landfill Semi -Annual Monitoring Program
The initial Sample and Analysis Groundwater Plan (SAP) (Altamont Environmental, 2012) has
been revised over time to incorporate changes. The February 2023 sampling event and this
Semiannual Water Quality Monitoring Report comply with SAP, Revision 1 (S&ME, 2020)
submitted to the Division on August 24, 2020. The Landfill semi-annual monitoring program,
described in detail in the SAP, consists of eight groundwater monitoring locations. Monitoring
well MW-4 is designated as a background well for the Landfill. Monitoring wells OB-2 (MW-6)
and OB-3 (MW-7) are designated as water level measurement only wells and are not sampled.
A summary of monitoring well construction information is presented in Table 1 and analytical
parameter coverage for the Landfill semi-annual groundwater monitoring program is
summarized in Table 2. Two groundwater monitoring locations have since been abandoned.
Monitoring well MW-5 was abandoned in December 2020 due to construction for the Site's
water redirect project, and observation well OB-1 was abandoned in April 2021 due to
excavation of Phase I. The existing groundwater monitoring locations are summarized in
Table 3 and shown on Figure 2.
May 2023 Page 1-2
Project: 00.0083.55

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshall Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
2.0 METHODS
2.1 Sampling and Analysis Methods
Groundwater sampling was performed by Pace Analytical Services personnel (Pace Analytical
North Carolina Field Certification #5342) on February 15, 2023, in accordance with the North
Carolina Solid Waste Management Guidelines. Copies of the field sampling forms are included
in Appendix A. Duke Energy Analytical Laboratory (North Carolina Laboratory Certification
#248) analyzed the reported parameters and constituents. The laboratory report and chain -of
custody forms are included in Appendix B.
The samples were analyzed for the list of parameters and constituents outlined in the SAP and
guidance from the NCDEQ Division of Waste Management, Solid Waste Section (SWS). The
monitoring parameters, along with the U.S. Environmental Protection Agency (USEPA) Solid
Waste (SW)-846 analytical methods, 15A NCAC 02L .0202(g) Groundwater Quality Standards
(02L)) are present in Table 2.
2.2 Regulatory Criteria
Evaluation of the semiannual monitoring analytical results are compared to the following
regulatory criteria:
Groundwater
• 02L
2.3 Statement of Work
The following tasks were completed for semiannual water quality monitoring:
• Groundwater levels and samples were collected on February 15, 2023.
• Reviewed the laboratory analytical results pertaining to the parameters listed in Table 2.
• Compared groundwater analytical results to 02L standards and historical concentration
ranges.
• Developed generalized groundwater surface contour maps using groundwater elevation
data.
• Calculated groundwater flow velocities based on groundwater elevations at wells
perpendicular to groundwater flow.
• Converted the laboratory provided electronic data deliverable (EDD) to the format
requirements of the NCDEQ DWM EDD template and submitted copies of the EDDs to
the NCDEQ Division of Waste Management (DWM) with this report.
• Prepared and submitted this Semiannual Water Quality Monitoring Report
May 2023 Page 2-1
Project: 00.0083.55

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshall Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
3.1 Site Groundwater Flow
Generalized groundwater elevation contours and groundwater flow direction arrows in the
vicinity of the Dry Ash Landfill are shown on Figure 3 for the surficial flow zone. These contours
were developed by calculating groundwater elevations in each monitoring well using the depth -
to -water -level measurements taken during February 2023. The water level in MW-6 (OB-2) has
continued to decrease since the previous reporting period resulting from groundwater
corrective action related to the Ash Basin; the water level was dry and was not measurable.
Similarly, the water level in MW-1 remains below the pump as well. In addition, water -level
measurements from nearby groundwater monitoring wells included in other Site groundwater
monitoring programs were used. Depth -to -water measurements and calculated groundwater
elevations are presented in Table 1. The calculated groundwater flow velocity for the Phase II
area is presented in Table 4; groundwater flow velocity was not calculated for the Phase I area
because the water level in MW-1 was below the pump. Calculated groundwater elevations
based on depth -to -water measurements gauged during February 2023 indicate groundwater at
the Landfill generally flows to the south and southeast towards Lake Norman, consistent with
historical Site observations.
3.2 Analytical Results
Analytical results, field data and reference comparisons discussed below are summarized in
Table 5 and Table 6. Sample locations are depicted on Figure 2.
Groundwater Results
Field and analytical results for the collected downgradient and background groundwater
samples are presented in Table 5. MW-1 was not able to be sampled because the water level
was below the pump. Groundwater analytical results are compared with 02L. Constituent
concentrations equal to or greater than their 02L include pH, antimony, boron, cobalt, iron, and
selenium in one or more wells and are noted in Table 5 by bold font. The laboratory analytical
reports are included as Appendix B. A summary of the groundwater field and analytical results
that are equal to or greater than 02L (pH, antimony, boron, cobalt, iron, nitrate, and selenium)
with a comparison to historical data are presented in Table 6.
3.3 Quality Assurance/Quality Control
Field -performed quality assurance and quality control (QA/QC) consisted of the collection and
analysis of a field blank to evaluate if contamination was imparted to the samples by the
sample container, preservative, or other exogenous sources. A field duplicate sample was also
collected to estimate sampling and laboratory precision.
Select samples were diluted, as is normal laboratory practice, to bring samples within the
calibrated range of the analysis. Specifics regarding the samples that were diluted, including the
dilution amount, are reported in the lab report. Additional QA/QC data, laboratory analyses,
and chain -of -custody forms are included in Appendix B.
May 2023 Page 3-1
Project: 00.0083.55

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshall Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
L'111=1.44=4401"i
Alta mont Environmental. (Rev 0, 2012). Sample and Analysis Groundwater Plan, Marshall
Steam Station — Dry Ash Landfill, 2012.
S&ME. (Rev 1, 2020). Sample and Analysis Groundwater Plan, Marshall Steam Station — Dry Ash
Landfill, 2020.
May 2023 Page 4-1
Project: 00.0083.55

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshal Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
FIGURES
L7
synTerra
Science & Engineering Consultants

DUKE ENERGY CAROLINAS
PROPERTY LINE
11
ra
NOTES:
1. ALL BOUNDARIES ARE APPROXIMATE.
2. AERIAL PHOTOGRAPHY OBTAINED FROM ESRI. IMAGERY WAS
COLLECTED OCTOBER 19, 2021.
DRY ASH LANDFILL
(PHASE II)
DRYASH
♦n
a�
/ . v.
MARSHALL
',.94-'STEAM STATION
♦ .♦
FIGURE 1
(> DUKE
CATAWBA
SITE LOCATION MAP
ENERGY
COUNTY
W/NSiON-SRLEM
DRY ASH LANDFILL
CAROLINAS
SEMIANNUAL WATER QUALITY MONITORING REPORT
ASHEV/LLE�
CHARLOTTE
MARSHALL STEAM STATION
TERRELL, NORTH CAROLINA
DRAWN BY: T. KING
DATE: 05/15/2019 GRAPHIC SCALE
REVISED BY: T. KING
DATE: 06/07/2022 1,000 0 1,000 2,000
CHECKED BY: T.. N
DATE: 06/07/2022
synTerra
APPROVED BY: T. COLTON
COLT
DATE: 06/07/2022
wwws nterracor .com
PROJECT MANAGER: T. COLTON
(IN FEET)

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ASH 8ASIIV
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LEGEND
MONITORINGWELL
\lk OBSERVATION WELL [WATER LEVEL ONLY]
r. }a ABANDONED MONITORING WELL
ABANDONED OBSERVATION WELL
ASH BASIN WASTE BOUNDARY
LANDFILL LIMIT OF WASTE
LANDFILL REVIEW BOUNDARY
/, • + ti L. ` LANDFILL COMPLIANCE BOUNDARY
At� 1 -DUKE ENERGY CAROLINAS PROPERTY LINE
' �'i • ► ' MW-1 ! -0 STREAM (MCKIM & CREED 2016)
x �_ - . WETLAND (MCKIM & CREED 2016)
•- ..- �o DNS '!' y NOTES:
�• �° �; J a - "� L;. •�,• . ► 1. THE STREAMS AND WETLANDS JURISDICTIONAL DETERMINATION WAS APPROVED
7 • • -► BY THE US ARMY CORPS OF ENGINEERS ON OCTOBER 25. 2017 (SAW-2015-01412)
'M1 I , ' f 4�{.7� ► -�, .� WETLANDS AND STREAMS BOUNDARIES WERE OBTAINED FROM AM EC FOSTER
gyo w t WHEELER ENVIRONMENTAL AND INFRASTRUCTURE, INC- NATURAL RESOURCES
TECHNICAL REPORT (NRTR) DATED JUNE 2015-
o �rJ
890 - s : " ' ' 1 • ' 2. SAMPLE LOCATIONS WERE DERIVED FROM VARIOUS SOURCES AND ARE A MIX 0-
,� + SURVEYED AND APPROXIMATE LOCATIONS. THEREFORE. SAMPLE LOCATIONS ARE TO BE
•� `, - DEEMED APPROXIMATE-
. ►,DUKE
� ..•} r
i
ENERGY.
CAR01INA5
r _.... sy Terra
3- ALL BOUNDARIES ARE APPROxIMATE-
'•
�'"'
4. AERIAL IMAGERY OBTAINED FROM PROPELLER VIA DUKE ENERGY IMAGE COLLECTED ON
MAY 8.2023.
Ak5-
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLAN'
so
COORDINATE SYSTEM RIPS 3200 INAD83.
GRAPHIC SCALE
290 0
290 Sao
FIGURE 2
SAMPLE LOCATIONS
IIrJ FEET)
DRY ASH LANDFILL
DRAWN'.T•KIG
RSEMIANNUAL
REVISED
NSEO BY: T. KING
DATE:02V03/2021
DATE: OB11312023
WATER QUALITY MONITORING REPORT
CHECKED BY; T. COLTON
DATE: OW13/2023
MARSHALL STEAM STATION
APPROVED BY: T. COLTON
PROJECT MANAGER: T. COLTON
DATE: 06/13/2023
TERRELL, NORTH CAROLINA

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LEGEND
MONITORING WELL
r OBSERVATION WELL
--- GROUNDWATER ELEVATION CONTOUR (NAVD88)
10 GROUNDWATER FLOW DIRECTION
— LANDFILL LIMIT OF WASTE
- - - - LANDFILL REVIEW BOUNDARY
- - - LANDFILL COMPLIANCE BOUNDARY
ASH BASIN WASTE BOUNDARY
- - DUKE ENERGY CAROLINAS PROPERTY LINE
—>~ STREAM (MCKIM & CREED 2D16)
WETLAND (MCKIM & CREED 2016)
TOPOGRAPHIC CONTOUR (10' INTERVAL)
`4
"'
NOTES:
1 THE STREAMS AND WETLANDS JURISDICTIONAL DETERMINATION WAS APPROVED
BY THE US ARMY CORPS OF ENGINEERS ON OCTOBER 25, 2017 (SAW-2015.01412).
/4ETLANDS AND STREAMS BOUNDARIES WERE OBTAINED FROM AMEC FOSTER
-NH EELERENVIRONMENTAL AND INFRASTRUCTURE, INC. NATURAL RESOURCES
TECHNICAL REPORT (NRTR) DATED JUNE 2015.
2 SAMPLE LOCATIONS WERE DERIVED FROM VARIOUS SOURCES AND ARE A MIX OF
SURVEYED AND APPROXIMATE LOCATIONS. THEREFORE, SAMPLE LOCATIONS ARE TO BE
DEEM ED AP PROXIMATE-
3 ALL BOUNDARIES ARE APPROXIMATE.
4 PROPERTY BOUNDARY PROVIDED BY DUKE ENERGYCAROLINAS.
5. GROUNDWATER ELEVATIONS MEASURED ON FEBRUARY 15, 2023.
o BTP-BELOW THE PUMP
7. AERIAL IMAGERY IS A COMBINATED OF DUKE ENERGY PROPELLER PHOTOGRAPHY
COLLECTED JANUARY 9-10, 2023 AND MAXAR IMAGERY OBTAINED FROM ESRI,
COLLECTED ON MARCH 12, 2022.
8 DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 320O (NAD83).
E' DUKE
e ENERGY
300 0 300 600
GRAPHIC SCALE (IN FEET)
FIGURE 3
WATER -LEVEL MAP - SURFICIAL FLOW ZONE
CARS
FEBRUARY 2023
��
DRAWN BY'. E.ORDENIANN
REVISED BY. E. ORDEMANN
OHEOKED BY: T. COLTON
DATE 0472472023
DATE: 05/02/2023
DATE: 05/02/2023
DRY ASH LANDFILL
SEMIANNUAL WATER QUALITY MONITORING REPORT
APPROVED BY. T. COLTON
DATE: 05/02/2023
MARSHALL STEAM STATION
c;\nTPrra
PROJECT MANAGER: T. COLTON
I
TERRELL, NORTH CAROLINA

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshal Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
TABLES
L7
synTerra
Science & Engineering Consultants

TABLE 1
WELL CONSTRUCTION SUMMARY
DRY ASH LANDFILL - PERMIT No. 1804-INDUS
SEMIANNUAL WATER QUALITY MONITORING REPORT
MARSHALL STEAM STATION
DUKE ENERGY CAROLINAS, LLC, TERRELL, NC
Well ID
Date
Installed
Flow
Zone
Material
Diameter
(Inches)
Latitude
(degrees)
Longitude
(degrees)
Well Depth
(Ft, BTOQ
Screened
Interval
(Ft, BTOQ
Measuring
Point TOC
(Ft, NAVD 88)
Ground
Surface
(Ft, NAVD 88)
Groundwater
Elevation
(Ft, NAVD 88)
Depth to
Water
(Ft, BTOC)
MW-1
8/15/1989
Surficial
PVC
2
35.61038
-80.96091
77.12
67.12 - 77.12
818.72
814.98
Below Pump
Below Pump
MW-2
8/15/1989
Surficial
PVC
2
35.61320
-80.96798
37.62
27.62 - 37.62
797.21
795.01
788.43
8.78
MW-3
8/15/1989
Surficial
PVC
2
35.61914
-80.96723
30.04
20.04 - 30.04
813.07
810.97
806.67
6.40
MW-4
8/15/1989
Surficial
PVC
2
35.62092
-80.97036
52.70
42.70 - 52.70
867.15
864.55
839.04
28.11
OB-2^ (MW-6)
12/17/2010
Surficial
PVC
2
35.61682
-80.96956
122.44
107.44 - 122.44
919.65
917.15
Dry
Dry
OB-3A (MW-7)
12/16/2010
Surficial
PVC
1 2
1 35.61722
1 -80.97044
1 59.20
1 44.20 - 59.20
1 859.16
1 856.66
1 814.52
44.64
Notes:
Groundwater elevations are based on water level data collected on February 15, 2023.
- Monitoring wells used for water level only.
BTOC - Below top of casing
Ft - Feet
NAVD 88 - Vertical elevations in feet based on North American Vertical Datum of 1988
PVC - Polyvinylchloride
TOC - Top of casing
Prepared by: GTC Checked by: TWL
Page 1 of 1

TABLE 2
GROUNDWATER MONITORING PARAMETERS
DRY ASH LANDFILL No. 1804-INDUS
SEMIANNUAL WATER QUALITY MONITORING REPORT
MARSHALL STEAM STATION
DUKE ENERGY CAROLINA, LLC, TERRELL, NC
Constituent
Units
Analytical
Methods
15A NCAC 02L Standards
for Groundwater
In Situ Parameters
Field pH
S.U.
Multi -Parameter Water Quality Meter
6.5-8.5
Field Specific Conductance
µit/cm
Multi -Parameter Water Quality Meter
NE
Field Temperature
degrees Celsius
Multi -Parameter Water Quality Meter
NE
Field Dissolved Oxygen
mg/L
Multi -Parameter Water Quality Meter
NE
Field Oxidation Reduction Potential
mV
Multi -Parameter Water Quality Meter
NE
Field Turbidity
NTU
Turbidimeter
NE
Water Level
feet
Water Level Meter
NE
Laboratory Analyses
Antimony
µg/L
EPA 200.8 / SW 6020B
1
Arsenic
µg/L
EPA 200.8 / SW 6020B
10
Barium
µg/L
EPA 200.7 / SW 6010D
700
Beryllium
µg/L
EPA 200.8 / SW 6020B
4
Boron
µg/L
EPA 200.7 / SW 6010D
700
Cadmium
µg/L
EPA 200.8 / SW 6020B
2
Calcium
mg/L
EPA 200.7 / SW 6010D
NE
Chloride
mg/L
EPA 300.0 / EPA 9056A
250
Chromium
µg/L
EPA 200.8 / SW 6020B
10
Cobalt
µg/L
EPA 200.8 / SW 6020B
1
Copper
µg/L
EPA 200.8 / SW 6020B
1,000
Fluoride
mg/L
EPA 300.0 / EPA 9056A
2
Iron
µg/L
EPA 200.7 / SW 6010D
300
Lead
µg/L
EPA 200.8 / SW 6020B
15
Lithium
µg/L
EPA 200.7 / SW 6010D
NE
Magnesium
mg/L
EPA 200.7 / SW 6010D
NE
Manganese
µg/L
EPA 200.7 / SW 6010D
50
Mercury
µg/L
EPA 245.1 / SW 7470A
1
Molybdenum
µg/L
EPA 200.8 / SW 6020B
NE
Nickel
µg/L
EPA 200.8 / SW 6020B
100
Nitrate
mg/L
EPA 300.0 / EPA 9056A
10
Selenium
µg/L
EPA 200.8 / SW 6020B
20
Silver
µg/L
EPA 200.8 or SW 6020A
20
Sulfate
mg/L
EPA 300.0 / EPA 9056A
250
Thallium
µg/L
EPA 200.8 / SW 6020B
2
Total Dissolved Solids
mg/L
SM 2540C / EPA 160.1 / ASTM D5907
500
Vanadium
µg/L
EPA 200.8 / SW 6020B
7
Zinc
µg/L
EPA 200.7 / SW 6010D
1,000
Prepared by: GTC Checked by: DAA/TWL
Notes:
15A NCAC 02L Standards for Groundwater - North Carolina Class GA Standards found in 15A NCAC 02L .0202 Groundwater Quality Standards (effective April 1, 2022).
USEPA Criteria for Surface Water - U.S. Environmental Protection Agency National Recommended Water Quality Criteria
NE - Not established
S.U. - standard units
µSS/cm - micro -ohms per centimeter
µg/L - micrograms per liter
mg/L - milligrams per liter
my - millivolts
NTU - nephelometric turbidity units
EPA - Environmental Protection Agency
SW - Solid Waste
Page 1 of 1

TABLE 3
MONITORING LOCATION SUMMARY TABLE
DRY ASH LANDFILL No. 1804-INDUS
SEMIANNUAL WATER QUALITY MONITORING REPORT
MARSHALL STEAM STATION
DUKE ENERGY CAROLINAS, LLC, TERRELL, NC
Monitoring
Media
Comments
location ID
See Table 1 Well Construction Summary for monitoring well construction
MW-1
information. Monitoring well at the downgradient Dry Ash Landfill Phase I
Waste Boundary.
See Table 1 Well Construction Summary for monitoring well construction
M W-2
information. Monitoring well downgradient of Dry Ash Landfill Phase II.
See Table 1 Well Construction Summary for monitoring well construction
M W-3
information. Monitoring well sidegradient of Dry Ash Landfill Phase II.
Groundwater
See Table 1 Well Construction Summary for monitoring well construction
M W-4
information. Monitoring well upgradient of Dry Ash Landfill Phase II.
See Table 1 Well Construction Summary for monitoring well construction
OB-2 (MW-6)
information. Water level only monitoring well within Dry Ash Landfill Phase II
See Table 1 Well Construction Summary for monitoring well construction
OB-3 (MW-7)
information. Water level only monitoring well near upgradient water
boundary of Dry Ash Landfill Phase II
Prepared by: GTC Checked by: DAA
Page 1 of 1

TABLE 4
GROUNDWATER SEEPAGE VELOCITIES
DRY ASH LANDFILL No. 1804-INDUS
SEMIANNUAL WATER QUALITY MONITORING REPORT
MARSHALL STEAM STATION
DUKE ENERGY CAROLINAS, LLC, TERRELL, NC
Surficial Flow Zone
Upgradient
Downgradient
Seepage
Groundwater
Groundwater
K
Ah
Distance
Effective
Well ID
Velocity
Elevation
Elevation
(ft/day)'
(ft)
(ft)
Porosity
(ft/day)
(Ft, NAVD 88)
(Ft, NAVD 88)
013-3 (MW-7) To MW-2
814.52
788.43
0.50
26.09
498
0.3
0.09
MW-3 To MW-2
806.67
788.43
0.50
18.24
662
0.3
0.05
Notes:
1- Values calculated as weighted average from the updated groundwater flow and transport model for the Site.
Groundwater elevations are based on water level data collected on February 15, 2023.
Hydraulic gradients and groundwater velocities are approximate.
Effective porosity taken from the Preliminary Updated Groundwater Flow and Transport Modeling Report for Marshall Steam Station, Terrell, NC, November 2018.
ft - feet
ft/day - feet per day
NAVD 88 - North American Vertical Datum 1988
Prepared by: GTC Checked by: TWL
Page 1 of 1

TABLE 5
GROUNDWATER FIELD RESULTS AND ANALYTICAL DETECTIONS
DRY ASH LANDFILL No. 1804-INDUS
SEMIANNUAL WATER QUALITY MONITORING REPORT
MARSHALL STEAM STATION
DUKE ENERGY CAROLINAS, LLC, TERRELL, NC
Parameter
SWS ID
Units
Monitoring Wells
MDL
15A NCAC 02L
Standard
MW-1
MW-2
MW-3
MW-4
pH
320
S.U.
NM
5.1
5.0
5.8
6.5-8.5
Temperature
325
Deg C
NM
13.2
15.8
15.3
NE
Specific Conductance
323
µmhos/cm
NM
549.1
75
58.2
NE
Dissolved Oxygen
-
mg/L
NM
0.7
5.8
5.2
NE
Oxidation Reduction Potential
336
mV
NM
43.8
271.4
261
NE
Eh
-
mV
NM
243.8
471.4
461
NE
Turbidity
330
NTUs
NM
2.1
0.1
0.7
-
NE
Antimony
13
µg/L
NS
< 1 U
< 1 U
2.14
0.104
1
Arsenic
14
µg/L
NS
0.186 J
< 1 U
0.149 J
0.111
10
Barium
15
µg/L
NS
489 J
1 216
63
2
700
Beryllium
23
µg/L
NS
< 1 U
0.498 J
< 1 U
0.249
4
Boron
428
µg/L
NS
2,830
7 J
8 J
5
700
Cadmium
34
µg/L
NS
0.142 J
0.051 J
< 1 U
0.032
2
Calcium
375
mg/L
NS
45.1
0.425
4.39
0.012
NE
Chloride
301
mg/L
NS
4.9
8.7
2.4
0.0154
250
Chromium
51
µg/L
NS
< 5 U
< 5 U
2 J
1
10
Cobalt
53
µg/L
NS
0.42 J
7.99
0.281 J
0.077
1
Copper
54
µg/L
NS
< 5 U
< 5 U
1 J
1
1,000
Fluoride
312
mg/L
NS
< 0.5 U
< 0.1 U
< 0.1 U
0.0479
2
Iron
340
µg/L
NS
365 J
12 J
612
4
300
Lead
131
µg/L
NS
0.537 J
0.048 J
0.323 J
0.037
15
Lithium
-
µg/L
NS
NM
NM
NM
2
NE
Magnesium
376
mg/L
NS
23.0
3.09
1.01
0.008
NE
Manganese
342
µg/L
NS
46
41
18
1
50
Mercury
132
µg/L
NS
< 0.05 U
< 0.05 U
< 0.05 U
0.01
1
Molybdenum
397
µg/L
NS
NM
NM
NM
0.18
NE
Nickel
152
µg/L
NS
< 5 U
11
< 5 U
1
100
Nitrate (as N)
303
mg-N/L
NS
0.84
1 4
0.18
0.002
10
Selenium
183
µg/L
NS
56.4
< 1 U
< 1 U
0.193
20
Silver
184
µg/L
NS
< 1 U
< 1 U
< 1 U
0.035
20
Sulfate
315
mg/L
NS
230
0.12
0.32
0.0428
250
Thallium
194
µg/L
NS
<0.2 U
0.093 J
<0.2 U
0.041
2
Total Dissolved Solids
311
mg/L
NS
1 413
41.0
52.0
25
500
Vanadium
209I
µg/L
NS
1.87
1 0.125 J
2.27
0.114
7
Zinc
213
1 itg/L
I NS
6
1 15
1 6
1 4
1 1,000
Prepared by GTC Checked by: TWL
Notes:
Bold concentrations are equal to or greater than the 15A NCAC 02L Standard (for pH bold indicates a measurement less than or greater than the indicated range)
15A NCAC 02L Standard refers to Class GA Standards as found in 15A NCAC 02L.0202 Groundwater Quality Standards, last amended on April 1, 2022.
Analytical data presented in this table reflect the Duke Energy Biological Analytical Data Storage System (BASS) as of 04/26/2023.
Samples collected by Pace personnel on February 15, 2023.
A blank cell means there is no relevant information.
<- Concentration not detected at or above the adjusted reporting limit.
Deg C - degrees Celsius
µmhos/cm - micromhos per centimeter
J - Value is estimated. The result is below the reporting limit or potentially biased based on data validation.
MDL- Laboratory Method Detection Limit; MDL values presented are for samples not diluted by the laboratory during analysis.
mg/L- milligrams per liter
mg-N/L- milligrams Nitrogen per liter
my - Millivolts
NCAC- North Carolina Administrative Code
NE - Not Established
NM - Not Measured
NS - Not Sampled
NTUs - Nephelometric Turbidity Units
S.U. - Standard Units
SW GWPS - Solid Waste Groundwater Protection Standard
µg/L- micrograms per liter
SWS ID - Solid Waste Section Identification Number
U - Analyte was analyzed for, but not detected above the minimum detectable concentration (MDC) or method detection limit (MDL).
Page 1 of 1

TABLE 6
FIELD AND ANALYTICAL RESULTS THAT EQUAL OR EXCEED GROUNDWATER QUALITY STANDARDS
DRY ASH LANDFILL - PERMIT No. 1804-INDUS
SEMIANNUAL WATER QUALITY MONITORING REPORT
MARSHALL STEAM STATION
DUKE ENERGY CAROLINAS, LLC, TERRELL, NC
Historical
Parameter
Sample ID
February 2023
Concentration
Units
15A NCAC 02L
Standard
Concentration
Significance
Range
pH is consistent with the
MW-2
5.1
5.1 - 6.1
range of historical readings
at MW-2.
pH is consistent with the
pH
MW-3
5
S.U.
6.5 - 8.5
4.4 - 5.4
range of historical readings
at MW-3.
pH is consistent with the
MW-4
5.8
5.0 - 6.3
range of historical readings
at MW-4.
Antimony is consistent with the
Antimony
MW-4
2.14
µg/L
1
<0.5 - 3.7
range of historical
concentrations at MW-4.
Boron is consistent with the
Boron
MW-2
2,830
µg/L
700
2,185 - 3,290
range of historical
concentrations at MW-2.
Cobalt is consistent with the
Cobalt
MW-3
7.99
µg/L
1
7.1- 8.9
range of historical
concentrations at MW-3.
Iron is greater than the range
MW-2
365 J
<10 - 180
of historical concentrations at
M W-2.
Iron
µg/L
300
Iron is consistent with the
MW-4
612
12.2 - 2,600
range of historical
concentrations at MW-4.
Selenium is consistent with the
Selenium
MW-2
56.4
µg/L
20
1.6 - 60.7
range of historical
concentrations at MW-2.
Prepared by: GTC Checked by: TWL
Notes:
Historical ranges are based on data from the monitoring events that occurred between August 1989 and August 2022.
15A NCAC 02L Standard refers to Class GA Standards as found in 15A NCAC 02L .0202 Groundwater Quality Standards, last amended on April 1, 2022.
Analytical data presented in this table reflect the Duke Energy Biological Analytical Data Storage System (BASS) as of 04/26/2023.
< - Concentration not detected at or greater than the adjusted reporting limit.
µg/L - micrograms per liter
J - Value is estimated. The result is below the reporting limit or potentially biased based on data validation.
S.U. - Standard Units
Page 1 of 1

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshal Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
APPENDIX A
FIELD SAMPLING FORMS
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Document Name: Field data Sheet Date fssued:iMarch &, 2(ng
(��@A(kdYflCal Pa e: 1 of
r
Document Number. F•CAR-Fl j:i oi-rev.0. issuing Authority: face Htmtersvil(e Quality
Office
Field Data Sheet
Client: 17uk 2 r Rc sic Location: M n" e� I (o Project #:MSS OR A L F 10er-Per
7—
Name and Affiliation (Snmpler(sj: S5 - ?0 CR Field Data:SheReview:
Name and Affiliation (Inspector): A i) A 7Well Information Date: By:ZAiV'
Well ID: (/l L'i ' Well Locked YE NO Flushmaunt ( J, J
)
Well Diameter: "
Construction: PV JSteei%Stahiless Steel)
Total Well Depth: ft Multi Factor : 3 a
,�i> ((Radius/12)2 x 314 x 7,A8]
Static Winer Level: - ft Casing Volume: 14 gallons
Height of Water Column: G • ft Cal. 3 Volumes: 1 gaIIons
Pump lnfake: 3:�S b ft
Purge Information
Date Purged:-Z�k—/ I '_J- 3 Start: 103O Finish: I Q Purge Rate: Q O f M C\
Purging Method: ]3lnl3t2x/ Total Volume Purged: a IQO (gallons/(I&L)
Sampling Information
Date Collected,_/ Time Collected:
Sampling Equipment Used; �h d t�oQ r/ _instrument II?: YSS`pJc �1� x }fipa n{mac r u� �wt4 3r a
Bottle Type Preservation Analysis Required
.___fit• �' K.�
Field MeasurementsJObaervations
Sample Temp (°C): 13 Time:_JQ��_ Turbidity(ntu): �t. Time;..] 5�' CC—
Diss Oxy,(mgJL): Q) Time:"1 0 Fe 2+ mg/L: iyl) Tune: I n $-�
Specific Cond. (uS): S7q q Time: 10 Res. Cl (mg/L)&g/L): Time:
Sample pH(s.u): :.__Time: Odar:— ---
_
ReDox(mV): 93, 3 Time: 1DS. f Appearance: U-e� rime: IQt�
ReDox (EH value)N3'SI ProPius+200mV233.'3 Other: Time:
General/Weather Observations:
unny loud frainy) Temp.,;- --ff) Wind (mph)
Sampler Signature: Date: fly (IS Il
Stabilization Test
Tune
Temp.
Diss Oxy.
Spec
Cond.pH
(s.u, )
ReDox
Turbidity
Vo nme
removed
Water
Purged
(°C)
(mgJl)
("IV)
(ntu)
(gallons/ t s
�-l'
level (ft)
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Document Name: Field data Sheet
Date Issued: March 8, 2014'
6C@Nr81y71Csf�
F'aga:1afl
Document Number: F-CAR-FLO-001-rev,03
Issuing Authority: Pace fitmtersville Quality
Office
Field Data Sheet
Client: NAKt fro y Location:7L rz+l; ytlC Project#: M53 UryA +.I r7evti'Yy.+r,tny (td2o2 j
Name and Affiliation (Sampler(s): R ,-1
6 1 n11 a `
Field Data Sheet Review:
Name and Affiliation (Inspector): N / /a
Date:6 By.
Z
Well Information
A `� 3 A w
Well III: ' M W -.3
Well Locked: ( YES)(NOY
Flushmount )
Well Diameter: a ^
Construction: 9PV Steel/Stainless Steel)
Total Well Depth: 10o . L0 ft
Multi Factor*: 0.16.3 r(Radius/12)2 x 3,14 x 7 asl
Static Water Level, t 4
O ft
Casing Volume: 3• S 0, gallons
Heightof Water Column:22,0 o ft
C43 Volumes: 10.76 gallons
Pump Intake: ' L ft
Purge Information
Pate Purged; Start: 1000 Finish:' 102.s ';PnrgeRate: iooPu5^
Purging Method: $ la d de r pu n P
Total Volume Purged: 2 S 00 (gallon(/mis/ )
Sampling Information
Date Collected: 2 / IS , .Z 3
Time Collected: 1030 T (anx pm}
Sampling Equipment Used: a'=1° Lde
PA-P InstrumentID: 6L 0565 /`f%Nv$oo 4
Bottle Type ;
Preservation Analysis Required
Field Measurements/Observations
Sample Temp CC): 15•00 Time:
Iq 3 Turbidity',(ntu): , ( Time; I o 3�
Diss Oxy,(mg/L); to $ Time:
Fe 2+mgf L: I� n Time,
Specific Band. (US): % 7.O' Time:
Res. Cl
Sample pH (s.u.): ' . o T.
;
Odor: nl a n P `, Time:—
ReDoX (mV): 2 7 .A Time:
Appearance: GI2cy Time: `)
ReDox (EH value):%SI ProPlus +2001nV
,y L • y Other: Time: -�
General/Weather Observations:
(Sunn c oudy iny) Temp. _(°F) Winds f 0 (mph)
Sampler Signature: R)'O"n °`S
Date: 2/ / S/ 1-
Stabilization
Teat
Spec.
'
Volume
Time
Temp.
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Turbidity
removed
Water
Purged
(eC)
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(mV)
(nut)
(gallons/&
level (ft)
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Dcwitnienf Name: Pteld data SheC4
Date lamted:'Marah &,2019
Pa e:latl
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Client:
Name;
Name 1
Well Ii
Well Ii
Well D
Total
Static 4
Height
Par>:e
Date Pi
Purgin
Samvli
Date C
Qs a;
Field Data Sheet
Idr_e Ener77 Location: 7G�Project r,ar�3
I Affiliation (Sampler(s): M P0.1,2 [;Date.
ta Sheet Review:
I Affiliation (Inspector): N � gtilelz3 B: Orsatmation2/y Well Locked: (YES Plushmouit )
neter: Z' ° Construction: (PV Steel/Skinless Steel)
1 Depth: ; S o, 20 ft Multi Factor*: 0 16 r) r*(ttadius/12)20,14 x 7 as1
ter Level: 39 ,11 ft Casing Volume: 1.4 7 gallons
Water Column; 2 •°� ft CaL 3 Volumes: $ • a I . gallons
Pump Intake. N -it
ormation � 1�'��
;ad: � i5 / z3 Start: 1 05 Finish: Purge Rate: 100ro'51m;e�
nethod: B:lmd ae� P ,l m I' Total Volume Purged: (gallon mis L)
~Information
ected: 2. " /j 2 3 Time Collected;_ (am in)
Equipment Used: BI> d de, P 4 Ny Instrument lD: y? 05 (9, 17-Pw 6o81
Bottle Type -
Preservation
Analysis Required
OuKe. �I�Lr Ic�'I'
Field Measurementa/Observations
Sample Temp CC):
I S .3 Time:_l
5 ' Turbidity (ntu): 0, 7
Time: 113 5
DissOxy'(mg/L): '
G1 2 Time:
�Fe2+mg/L:
Thue: O
Specific Cond. (uS)i
5 S , 2 Time: '
Res. Cl (mg/Lu(µglL):
—Time:
Sample pH. (s.u.);
S • H .Time:
Odor:
Time: , l 135
ReDox (mv):
2 bl ,O Time:
Appearance:
Time: l
;eneral/Weather O
I Proplus.+200iuV b 1. Q Other:: r Time:
nervations:
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Spec. Volume -
Time
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Document Nance: Fteld dati+Sheet
Date laanedr March 8,2019
1
B/UtalyUCal
of-(
y:Rage:
Authority: Quality
i!`
t
Ik�cumenk Number: FCAti-FID-0OI-rev.03umg
O�.�untetavitle
Field Data Sheet
Client: Dtn`LQ U— l"(92t Locution: Ca A-L Project CM.51 -OF AL= P,2rrni(—
Name and Affiliation (Sampler(s)�
Pield Data Sheet Review:
Name and Affiliation (Inspector): /,j\ p
Date:o:,ImIn Q� i
By, ATQ
WeII Information
1/ti/a1
Well ID: Cn 55 -' ED — l
u )
Well Diameter:
Cotlstruetinn mvr rc. t rSt�inless Steel)
Total Well Depth: ft
Multi Factor*: r(Radius/12)2x114x7481
Static Water Level; #t
Casing Volume: gallons
Height of Water Coln rm. `— ft
CaL 3 Volumes: gallons
Pump Intake: ft
Purge Information
Date Purged:j=/ Start :
Finish:Purge Rate: --
Purging Method:
Total Volume Purged: (gallons/uds/L)
Sampling Information
Date Collected:Ub- / iY a-3
_
Time Collected;) 0 Cia)/ pin)
Sampling Equipment Used: E&a AAA,��Instrument
ID: SfiT��r l� o� as /n wcroTP t� 3e }�
Bottle Type,
Preservation ' Analysis Required
Field Measurements/Observation
Ie Temp (°C): ` Time,,
.._� Turbidity (ntu): Time:
Diss Oxy'(mg/I ):
+ m /L: Tune:
Specific Cond. (uS)i' Time:
Res. Cl in line:
Sample (.H (s.u.): Time:
Odor: `
ReDox (MV): Time:
Appearance: Time:
R ox (EH valae)NSI ProPlus:+2QpniV
Other: Time:
General/WeatherObservations:
b w - -
unny cl ud /rainy) Temp..��_.("F) Wind to (mph)
Sampler Signature:,Date:
.;tnhili7.x inn Test
0 MOM
n�
�l

Bf1ik91Yt1C�1'
Document Name: Field data Sheet
Date Issued: March 8, 2019
Pp e:l 1 ofI
Document Number. P-CAR-FLIP-Ohl-revA3
Issuing Authority; Face Hhmtersvite Quality
of
Field Data Sheet
Client: F-n.eT
Location:
v4r- Project #
Name and Affiliation (Samplee(s7�7 - 1?6e cR
Field Data Sheet Review:
Name and Affiliati4o (Inspector):
Nj A
ozi1,6lzl fA.s
Well Information-
Date...2 By:Atw
Well ID MSS _
Well Diameter: —
C :
e, eel)
Total Well Depth; -
It Multi Factor*:
r(Radius/12)2x3.14x9481
Static Water Leveti ` —
ft Casing Volume.
gallons
Height of Water Column:
ft Cal. 3 Volumes:
— gallons
Pump Intake:
ft
Purge Information
Date Purged: / — / -
— Start- --Finish.
— Purge Rate:
Purging Method:
Total Volume
Purged: (gallons/nds/L)
SamplingInformation
Date Collected:_()-b- ./-5_6-3.
Time Collected:—( -- __
_(am pm)
Sampling Equipment Used:
Instrument ID:
Bottle Type
Preservation
Analysis Required
Field Measurements/Observations
°C :: Timer
__Turbidity (ntu):
Time:
piss Oxy'(mg/L):
Fe 2+ mg/L:
Time:
Specific Cond. (uS);Time:
es.
L): Time:
Sample PH (s.u.): e;
Odor,
ReDox (mV): _._ Time:
Appearance:
rime:
RcD value):YSI ProPlus +200MV
other:
Time:
General/Weather Observations;
/ u /rainy) Temp (°F) Wind (mph)
SamplerSignature: /✓�"
Date: o? I 1 S` �3 3
Stabilization
Test
Mamma—
P—�M!40
PENN-

Document Name: Fidd data Sheet
Date Issued: March 8, 2019'
BNtAfy(iCa('
Page: i of
Document Number: P-CAR-fl.TS-i101-rev.03
Issuing Authority: face Htmtersville Quality
Office
Field Data Sheet
Client: iluka a sioy
Locaflon: Ts rrul/NL
Project #: tlry436 tr ty� ,'+pan ,;�j rcd.�os7
Name and Affiliation (Sampler(s):
R "g t°a
Field Data Sheet Review:
Name'and Affiliation (Inspector):
Iq
PM
Well Information
Date: ozli&!ta By:
2 fl c/a3 Y otC i
Well ID: MS i _' FIR
Well Locked: ( Y;S
Flus mount )
Well Diameter: �—
Construction: (��,
. t� _less Steel)
Total Well Depth:
ft Multi Factor*:
�(Radtua/Iz)z x3.14x 7.481
Static Water Level:
ft Casing Volume:
gallons
Height of Water Colunul �
ft Cal, 3 Volumes:
gallons
Pump lnfake:
ft
Puree Information
Date Purged:
Start : Finish:'
purge Rate, "—
Purging Method: "'�
Total Volume Purged: (gallonsJu>IsJL)
Sampling Information
Date Collected Z f IS J_ Time Collected: 1200
(amJ m
Sampling, Equipment Used: (i ra-6
Instrument ID:
{
Bottle Type
Preservation
Analysis Required
D�11-� OALF kif
Field Measurements/Observations
Sample Temp Cq: — — me:
_Turbidity (ntu): i
Time;
Diss Oxy'(mg/L): �'� Time,
Fe 2+ mgJL:
Specific Cond. (uS):' � Time:
Sample pf-I (s.u.): Time:
Odor:._
ReDox (mV):y""--Time:
-- 7ppearat ce:
ReDox (EH value):XSI ProPlus +260mV ---
Other:
Time:
General/WeatherObservations: ; &td blank
.;.j ie,j C9,4- MW—LI Io
4_+ ,,
(sunnvl loudly rainv1 Tamn S.).. P171 Wind n l� f.n hl _
ampler Signature: RY-n KI L _Date: -i../ i5l'2 J
tabiliaation Test
Time
Purged
Temp:
o
(C}
Diss Ox .
(mg/L)
Spec.
Cond.
(US)
pH (s.u)
ReDox
(mV)
Turbidity
(ntu)
Volume
removed
(gallonsjm1s/
L
Water
.level (ft)
Other

AotuName: Field data Sheet
Date Issued: Wr°h 8, 2P19mank
! aceA/h7/y(7Ca/"
Page 1 of _t
IJucumer k Number F-C,AR-EI.l -09l-rev:09
Issuuig Auttmnty:Paw Huntersvitle Quality
z
Office
� ''"" Field Data Sheet
Client: � r ¢cry Location: .otti . ?roTeet #:1"S11 MA LF Ver`•-t'
Name and Affiliation (Sampier(s); _,S� - t�Cccz
Field Data Sheet Review:
Name -and Affiliation (Inspector): rJ F-
o'ili6 173 er
Date:z/Itritl By: pt,t
WellInforittation
Well ID: (`fl W - i
Well Locked: YE
/ NO /'Flushmount )
Well Diameter: c�"
Construction: Vt.' Steel/Stahiless Steel)
Total Well Depth:, ft
Multi Factor*: 2`(1 33 "(Itadius/12)2x3.14x74$1
Static Water Level:. it
Casing Volume: gallons
Height of Water Column.'— ft
Cal. 3 Volumes: gallons
Pump Intakes — It
PgEge Information
Date Purled:-1 f' Start :
Finish: Purge Rate:
Purging Method: `—
Total Volume Purged: (gaIlons/mis/L)
Sampling Information
Date Collected: — f=J
Time Collected:- (am/pm)
Sampling Equipment Used:
Instrument ID. -
Bottle Type
Preservation Analysis Required
Field Measurements/Observations
le Temp (°C): _ Time:
__ Turbidity (ntu); Time:
Diss Oxy'(mg/L):
Fe 2+ mg/L TA
Specific Cond. (uS): Time:
Res. Iuiie:
Sampie pH (s.u.): Time;
Odors _. Time:
ReDo Times
Appearance: Time:
eDox €EH value):YST ProPlus+2OOmV
Other: Time:
Time
Purged
—TTa
(C)
Diss Oxy.
(mg
Spec.
Cond.
(u
pH (s.u.)
ReDox
(mV)
Turbidity
(ntu)
Volume
removed
(gallons/nits/
L
Water
level (£t)
Other

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshal Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
r
APPENDIX B
LABORATORY REPORT AND
CHAIN -OF -CUSTODY FORMS
L7
synTerra
Science & Engineering Consultants

DUE Analytical Laboratory
ENERGY
Y
13339 Hagers Ferry Road
Huntersville, NC 28078-7929
McGuire Nuclear Complex - MG03A2
Phone:[phone] Fax:[phone]
Order Summary Report
Order Number: J23010144
Project Name: MARSHALL - GW DRY ASH LANDFILL
Task Code: LF
Customer Name(s): Ashley Healy, Bryan Moeller, Josh Stowe,Dee Obrien
Customer Address: Marshall Steam Station
8320 NC Hwy 150 East
Mail Code: Marshall Steam Station
Terrell, NC 28682
Lab Contact: Peggy Kendall Phone: [phone]
Report Authorized By: f,ate: 3/3/2023
(Signature) /� l.tA
Peg Udall
Program Comments:
QC Note: Iron (0.018 mg/L) was detected in the field blank.
Data Flags & Calculations:
Page 1 of 21
Any analytical tests or individual analytes within a test flagged with a Qualifier indicate a deviation from the method quality
system or quality control requirement. The qualifier description is found at the end of the Certificate of Analysis (sample results)
under the qualifiers heading. All results are reported on a dry weight basis unless otherwise noted. Subcontracted data
included on the Duke Certificate of Analysis is to be used as information only. Certified vendor results can be found in the
subcontracted lab final report. Duke Energy Analytical Laboratory subcontracts analyses to other vendor laboratories that have
been qualified by Duke Energy to perform these analyses except where noted.
Data Package:
This data package includes analytical results that are applicable only to the samples described in this narrative. An estimation of
the uncertainty of measurement for the results in the report is available upon request. This report shall not be reproduced, except
in full, without the written consent of the Analytical Laboratory. Please contact the Analytical laboratory with any questions. The
order of individual sections within this report is as follows:
Job Summary Report, Sample Identification, Technical Validation of Data Package, Analytical Laboratory Certificate of Analysis,
Analytical Laboratory QC Reports, Sub -contracted Laboratory Results, Customer Specific Data Sheets, Reports &
Documentation, Customer Database Entries, Test Case Narratives, Chain of Custody (COC)
Certification:
The Analytical Laboratory holds the following State Certifications : North Carolina (DENR) Certificate #248, South Carolina
(DHEC) Laboratory ID # 99005. Contact the Analytical Laboratory for definitive information about the certification status of
specific methods.

Sample ID's & Descriptions:
Sample ID Plant/Station
2023000553
2023000554
2023000555
2023000556
2023000557
2023000558
6 Total Samples
Collection
Date and Time Collected By
Sample Description
Page 2 of 21
MARSHALL
15-Feb-23
10:55 AM
JJZ
MSS_MW-2
MARSHALL
15-Feb-23
10:30 AM
RMB
MSS_MW-3
MARSHALL
15-Feb-23
11:35 AM
RMB
MSS MW-4
MARSHALL
15-Feb-23
JJZ
MSS_FD-20230215-1
MARSHALL
15-Feb-23
11:25 AM
JJZ
MSS EB-20230215-1125
MARSHALL
15-Feb-23
12:00 PM
RMB
MSS_FB-20230215-1200

Page 3 of 21
Technical Validation Review
Checklist:
COC and .pdf report are in agreement with sample totals❑ Yes ❑ No
and analyses (compliance programs and procedures).
All Results are less than the laboratory reporting limits. ❑ Yes❑ No
All laboratory QA/QC requirements are acceptable. 0 Yes ❑ No
Report Sections Included:
d❑ Job Summary Report
J❑ Sample Identification
❑ Technical Validation of Data Package
❑ Analytical Laboratory Certificate of Analysis
❑ Analytical Laboratory QC Report
❑ Sub -contracted Laboratory Results
❑ Customer Specific Data Sheets, Reports, & Documentation
❑ Customer Database Entries
❑ Chain of Custody
❑ Electronic Data Deliverable (EDD) Sent Separately
Reviewed By: Peggy Kendall Date: 3/3/2023

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23010144
Site: MSS MW-2
Collection Date: 02/15/2023 10:55 AM
Analyte Result Units
ALKALINITY (FIXED END POINT 4.5) - Q23020432
Total Alkalinity as CaCO3 25 mg/L
(CaCO3)
Sample #: 2023000553
Loc code: MSS MW-2 Matrix: GW RCRA
Page 4 of 21
Qualifiers RDL MDL DF Method Analysis Date/Time Analyst
INORGANIC IONS BY IC - Q23020309
Chloride
4.9
mg/L
Fluoride
0.0479 U
mg/L
Nitrate
3.7
mg/L
Nitrate as N
0.84
mg-N/L
Sulfate
230
mg/L
MERCURY (COLD VAPOR) IN WATER - Q23020401
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q23020351
Barium (Ba)
0.489
mg/L
Boron (B)
2.83
mg/L
Calcium (Ca)
45.1
mg/L
Chromium (Cr)
0.001 U
mg/L
Copper (Cu)
0.001 U
mg/L
Iron (Fe)
0.365
mg/L
Magnesium (Mg)
23.0
mg/L
Manganese (Mn)
0.046
mg/L
Nickel (Ni)
0.001 U
mg/L
Potassium (K)
3.37
mg/L
Sodium (Na)
33.8
mg/L
Zinc (Zn)
0.006
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS
- Q23020356
Antimony (Sb)
0.104 U
ug/L
Arsenic (As)
0.186 J
ug/L
Beryllium (Be)
0.249 U
ug/L
Cadmium (Cd)
0.142 J
ug/L
Cobalt (Co)
0.42 J
ug/L
Lead (Pb)
0.537 J
ug/L
Selenium (Se)
56.4
ug/L
Silver (Ag)
0.035 U
ug/L
Thallium (TI) Low Level
0.041 U
ug/L
Vanadium (V) Low Level
1.87
ug/L
TOTAL DISSOLVED SOLIDS - Q23020346
TDS
413
mg/L
20 1.7 1 SM 2320B 02/22/2023 11:46 SNEGLIA
0.5
0.0154
5
EPA 9056A
02/16/2023 08:56
BGN9034
0.5
0.0479
5
EPA 9056A
02/16/2023 08:56
BGN9034
0.5
0.0209
5
EPA 9056A
02/16/2023 08:56
BGN9034
0.115
0.002
5
EPA 9056A
02/16/2023 08:56
BGN9034
5
0.0428
50
EPA 9056A
02/16/2023 08:56
BGN9034
0.05
0.01
1
EPA 7470A
02/21/2023 11:56
JAA5429
0.005
0.002
1
SW 6010D
02/20/2023 14:41
CELL106
0.05
0.005
1
SW 6010D
02/20/2023 14:41
CELL106
0.05
0.012
1
SW 6010D
02/20/2023 14:41
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:41
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:41
CELL106
0.01
0.004
1
SW 6010D
02/20/2023 14:41
CELL106
0.02
0.008
1
SW 6010D
02/20/2023 14:41
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:41
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:41
CELL106
0.1
0.031
1
SW 6010D
02/20/2023 14:41
CELL106
0.05
0.017
1
SW 6010D
02/20/2023 14:41
CELL106
0.005
0.004
1
SW 6010D
02/20/2023 14:41
CELL106
1
0.104
1
SW 6020B
02/20/2023 16:33
MHALL3
1
0.111
1
SW 6020B
02/20/2023 16:33
MHALL3
1
0.249
1
SW 6020B
02/20/2023 16:33
MHALL3
1
0.032
1
SW 6020B
02/20/2023 16:33
MHALL3
1
0.077
1
SW 6020B
02/20/2023 16:33
MHALL3
1
0.037
1
SW 6020B
02/20/2023 16:33
MHALL3
1
0.193
1
SW 6020B
02/20/2023 16:33
MHALL3
1
0.035
1
SW 6020B
02/20/2023 16:33
MHALL3
0.2
0.041
1
SW 6020B
02/20/2023 16:33
MHALL3
0.3
0.114
1
SW 6020B
02/20/2023 16:33
MHALL3
25
25
1
SM2540C
02/17/2023 08:28
EBATIAN

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23010144
Site: MSS MW-3
Collection Date: 02/15/2023 10:30 AM Loc code: MSS MW-3
Analyte Result Units Qualifiers RDL MDL DF
LOW LEVEL ALKALINITY (FIXED END POINT) - Q23020445
Total Alkalinity as CaCO3 2.63 J mg/L 5 1.7 1
(CaCO3)
INORGANIC IONS BY IC - Q23020309
Chloride
8.7
mg/L
Fluoride
0.0479 U
mg/L
Nitrate
18
mg/L
Nitrate as N
4.0
mg-N/L
Sulfate
0.12
mg/L
MERCURY (COLD VAPOR) IN WATER - Q23020401
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q23020351
Barium (Ba)
0.216
mg/L
Boron (B)
0.007 J
mg/L
Calcium (Ca)
0.425
mg/L
Chromium (Cr)
0.001 U
mg/L
Copper (Cu)
0.001 U
mg/L
Iron (Fe)
0.012
mg/L
Magnesium (Mg)
3.09
mg/L
Manganese (Mn)
0.041
mg/L
Nickel (Ni)
0.001 J
mg/L
Potassium (K)
2.14
mg/L
Sodium (Na)
5.75
mg/L
Zinc (Zn)
0.015
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS
- Q23020356
Antimony (Sb)
0.104 U
ug/L
Arsenic (As)
0.111 U
ug/L
Beryllium (Be)
0.498 J
ug/L
Cadmium (Cd)
0.051 J
ug/L
Cobalt (Co)
7.99
ug/L
Lead (Pb)
0.048 J
ug/L
Selenium (Se)
0.193 U
ug/L
Silver (Ag)
0.035 U
ug/L
Thallium (TI) Low Level
0.093 J
ug/L
Vanadium (V) Low Level
0.125 J
ug/L
TOTAL DISSOLVED SOLIDS - Q23020346
TDS
41.0
mg/L
Sample #: 2023000554
Matrix: GW RCRA
Page 5 of 21
Method Analysis Date/Time Analyst
SM 2320B4d 02/23/2023 10:30 SNEGLIA
0.1
0.0154
1
EPA 9056A
02/16/2023 08:25
BGN9034
0.1
0.0479
1
EPA 9056A
02/16/2023 08:25
BGN9034
0.5
0.0209
5
EPA 9056A
02/16/2023 08:25
BGN9034
0.115
0.002
5
EPA 9056A
02/16/2023 08:25
BGN9034
0.1
0.0428
1
EPA 9056A
02/16/2023 08:25
BGN9034
0.05
0.01
1
EPA 7470A
02/21/2023 12:03
JAA5429
0.005
0.002
1
SW 6010D
02/20/2023 14:24
CELL106
0.05
0.005
1
SW 6010D
02/20/2023 14:24
CELL106
0.05
0.012
1
SW 6010D
02/20/2023 14:24
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:24
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:24
CELL106
0.01
0.004
1
SW 6010D
02/20/2023 14:24
CELL106
0.02
0.008
1
SW 6010D
02/20/2023 14:24
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:24
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:24
CELL106
0.1
0.031
1
SW 6010D
02/20/2023 14:24
CELL106
0.05
0.017
1
SW 6010D
02/20/2023 14:24
CELL106
0.005
0.004
1
SW 6010D
02/20/2023 14:24
CELL106
1
0.104
1
SW 6020B
02/20/2023 17:16
MHALL3
1
0.111
1
SW 6020B
02/20/2023 17:16
MHALL3
1
0.249
1
SW 6020B
02/20/2023 17:16
MHALL3
1
0.032
1
SW 6020B
02/20/2023 17:16
MHALL3
1
0.077
1
SW 6020B
02/20/2023 17:16
MHALL3
1
0.037
1
SW 6020B
02/20/2023 17:16
MHALL3
1
0.193
1
SW 6020B
02/20/2023 17:16
MHALL3
1
0.035
1
SW 6020B
02/20/2023 17:16
MHALL3
0.2
0.041
1
SW 6020B
02/20/2023 17:16
MHALL3
0.3
0.114
1
SW 6020B
02/20/2023 17:16
MHALL3
25
25
1
SM2540C
02/17/2023 08:28
EBATIAN

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23010144
Site: MSS MW-4
Collection Date: 02/15/2023 11:35 AM
Analyte Result Units
ALKALINITY (FIXED END POINT 4.5) - Q23020432
Total Alkalinity as CaCO3 23 mg/L
(CaCO3)
Sample #: 2023000555
Loc code: MSS MW-4 Matrix: GW RCRA
Page 6 of 21
Qualifiers RDL MDL DF Method Analysis Date/Time Analyst
INORGANIC IONS BY IC - Q23020309
Chloride
2.4
mg/L
Fluoride
0.0479 U
mg/L
Nitrate
0.78
mg/L
Nitrate as N
0.18
mg-N/L
Sulfate
0.32
mg/L
MERCURY (COLD VAPOR) IN WATER - Q23020401
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q23020351
Barium (Ba)
0.063
mg/L
Boron (B)
0.008 J
mg/L
Calcium (Ca)
4.39
mg/L
Chromium (Cr)
0.002 J
mg/L
Copper (Cu)
0.001 J
mg/L
Iron (Fe)
0.612
mg/L
Magnesium (Mg)
1.01
mg/L
Manganese (Mn)
0.018
mg/L
Nickel (Ni)
0.001 U
mg/L
Potassium (K)
2.87
mg/L
Sodium (Na)
4.62
mg/L
Zinc (Zn)
0.006
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS
- Q23020356
Antimony (Sb)
2.14
ug/L
Arsenic (As)
0.149 J
ug/L
Beryllium (Be)
0.249 U
ug/L
Cadmium (Cd)
0.032 U
ug/L
Cobalt (Co)
0.281 J
ug/L
Lead (Pb)
0.323 J
ug/L
Selenium (Se)
0.193 U
ug/L
Silver (Ag)
0.035 U
ug/L
Thallium (TI) Low Level
0.041 U
ug/L
Vanadium (V) Low Level
2.27
ug/L
TOTAL DISSOLVED SOLIDS - Q23020346
TDS
52.0
mg/L
20 1.7 1 SM 2320B 02/22/2023 11:53 SNEGLIA
0.1
0.0154
1
EPA 9056A
02/16/2023 07:38
BGN9034
0.1
0.0479
1
EPA 9056A
02/16/2023 07:38
BGN9034
0.1
0.0209
1
EPA 9056A
02/16/2023 07:38
BGN9034
0.023
0.002
1
EPA 9056A
02/16/2023 07:38
BGN9034
0.1
0.0428
1
EPA 9056A
02/16/2023 07:38
BGN9034
0.05
0.01
1
EPA 7470A
02/21/2023 12:05
JAA5429
0.005
0.002
1
SW 6010D
02/20/2023 14:46
CELL106
0.05
0.005
1
SW 6010D
02/20/2023 14:46
CELL106
0.05
0.012
1
SW 6010D
02/20/2023 14:46
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:46
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:46
CELL106
0.01
0.004
1
SW 6010D
02/20/2023 14:46
CELL106
0.02
0.008
1
SW 6010D
02/20/2023 14:46
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:46
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:46
CELL106
0.1
0.031
1
SW 6010D
02/20/2023 14:46
CELL106
0.05
0.017
1
SW 6010D
02/20/2023 14:46
CELL106
0.005
0.004
1
SW 6010D
02/20/2023 14:46
CELL106
1
0.104
1
SW 6020B
02/20/2023 17:24
MHALL3
1
0.111
1
SW 6020B
02/20/2023 17:24
MHALL3
1
0.249
1
SW 6020B
02/20/2023 17:24
MHALL3
1
0.032
1
SW 6020B
02/20/2023 17:24
MHALL3
1
0.077
1
SW 6020B
02/20/2023 17:24
MHALL3
1
0.037
1
SW 6020B
02/20/2023 17:24
MHALL3
1
0.193
1
SW 6020B
02/20/2023 17:24
MHALL3
1
0.035
1
SW 6020B
02/20/2023 17:24
MHALL3
0.2
0.041
1
SW 6020B
02/20/2023 17:24
MHALL3
0.3
0.114
1
SW 6020B
02/20/2023 17:24
MHALL3
25
25
1
SM2540C
02/17/2023 08:28
EBATIAN

Certificate of Laboratory Analysis Page 7 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Site: MSS_FD-20230215-1 Duplicate Sample #: 2023000556
Collection Date: 02/15/2023 Loc code: MSS FD Matrix: GW RCRA
Analyte Result Units
ALKALINITY (FIXED END POINT 4.5) - Q23020432
Total Alkalinity as CaCO3 26 mg/L
(CaCO3)
Qualifiers RDL MDL DF Method Analysis Date/Time Analyst
INORGANIC IONS BY IC - Q23020309
Chloride
4.9
mg/L
Fluoride
0.0479 U
mg/L
Nitrate
3.7
mg/L
Nitrate as N
0.84
mg-N/L
Sulfate
230
mg/L
MERCURY (COLD VAPOR) IN WATER - Q23020401
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q23020351
Barium (Ba)
0.319
mg/L
Boron (B)
2.79
mg/L
Calcium (Ca)
44.4
mg/L
Chromium (Cr)
0.001 U
mg/L
Copper (Cu)
0.001 U
mg/L
Iron (Fe)
0.204
mg/L
Magnesium (Mg)
22.8
mg/L
Manganese (Mn)
0.039
mg/L
Nickel (Ni)
0.001 U
mg/L
Potassium (K)
3.27
mg/L
Sodium (Na)
33.3
mg/L
Zinc (Zn)
0.004 U
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS
- Q23020356
Antimony (Sb)
0.104 U
ug/L
Arsenic (As)
0.139 J
ug/L
Beryllium (Be)
0.249 U
ug/L
Cadmium (Cd)
0.146 J
ug/L
Cobalt (Co)
0.315 J
ug/L
Lead (Pb)
0.383 J
ug/L
Selenium (Se)
56.9
ug/L
Silver (Ag)
0.035 U
ug/L
Thallium (TI) Low Level
0.041 U
ug/L
Vanadium (V) Low Level
1.58
ug/L
TOTAL DISSOLVED SOLIDS - Q23020346
TDS
408
mg/L
20 1.7 1 SM 2320B 02/22/2023 11:56 SNEGLIA
0.5
0.0154
5
EPA 9056A
02/16/2023 08:41
BGN9034
0.5
0.0479
5
EPA 9056A
02/16/2023 08:41
BGN9034
0.5
0.0209
5
EPA 9056A
02/16/2023 08:41
BGN9034
0.115
0.002
5
EPA 9056A
02/16/2023 08:41
BGN9034
5
0.0428
50
EPA 9056A
02/16/2023 08:41
BGN9034
0.05
0.01
1
EPA 7470A
02/21/2023 12:07
JAA5429
0.005
0.002
1
SW 6010D
02/20/2023 14:52
CELL106
0.05
0.005
1
SW 6010D
02/20/2023 14:52
CELL106
0.05
0.012
1
SW 6010D
02/20/2023 14:52
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:52
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:52
CELL106
0.01
0.004
1
SW 6010D
02/20/2023 14:52
CELL106
0.02
0.008
1
SW 6010D
02/20/2023 14:52
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:52
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:52
CELL106
0.1
0.031
1
SW 6010D
02/20/2023 14:52
CELL106
0.05
0.017
1
SW 6010D
02/20/2023 14:52
CELL106
0.005
0.004
1
SW 6010D
02/20/2023 14:52
CELL106
1
0.104
1
SW 6020B
02/20/2023 17:32
MHALL3
1
0.111
1
SW 6020B
02/20/2023 17:32
MHALL3
1
0.249
1
SW 6020B
02/20/2023 17:32
MHALL3
1
0.032
1
SW 6020B
02/20/2023 17:32
MHALL3
1
0.077
1
SW 6020B
02/20/2023 17:32
MHALL3
1
0.037
1
SW 6020B
02/20/2023 17:32
MHALL3
1
0.193
1
SW 6020B
02/20/2023 17:32
MHALL3
1
0.035
1
SW 6020B
02/20/2023 17:32
MHALL3
0.2
0.041
1
SW 6020B
02/20/2023 17:32
MHALL3
0.3
0.114
1
SW 6020B
02/20/2023 17:32
MHALL3
25
25
1
SM2540C
02/17/2023 08:44
EBATIAN

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23010144
Site: MSS_EB-20230215-1125 Equipment Blank
Collection Date: 02/15/2023 11:25 AM Loc code: MSS EB
Analyte Result Units Qualifiers RDL MDL DF
LOW LEVEL ALKALINITY (FIXED END POINT) - Q23020445
Total Alkalinity as CaCO3 1.7 U mg/L 5 1.7 1
(CaCO3)
INORGANIC IONS BY IC - Q23020309
Chloride
0.0154 U
mg/L
Fluoride
0.0479 U
mg/L
Nitrate
0.0209 U
mg/L
Nitrate as N
0.002 U
mg-N/L
Sulfate
0.0428 U
mg/L
MERCURY (COLD VAPOR) IN WATER - Q23020401
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q23020351
Barium (Ba)
0.002 U
mg/L
Boron (B)
0.005 J
mg/L
Calcium (Ca)
0.012 U
mg/L
Chromium (Cr)
0.001 U
mg/L
Copper (Cu)
0.001 U
mg/L
Iron (Fe)
0.004 U
mg/L
Magnesium (Mg)
0.008 U
mg/L
Manganese (Mn)
0.001 U
mg/L
Nickel (Ni)
0.001 U
mg/L
Potassium (K)
0.031 U
mg/L
Sodium (Na)
0.017 U
mg/L
Zinc (Zn)
0.004 U
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS
- Q23020356
Antimony (Sb)
0.104 U
ug/L
Arsenic (As)
0.111 U
ug/L
Beryllium (Be)
0.249 U
ug/L
Cadmium (Cd)
0.032 U
ug/L
Cobalt (Co)
0.077 U
ug/L
Lead (Pb)
0.037 U
ug/L
Selenium (Se)
0.193 U
ug/L
Silver (Ag)
0.035 U
ug/L
Thallium (TI) Low Level
0.041 U
ug/L
Vanadium (V) Low Level
0.114 U
ug/L
TOTAL DISSOLVED SOLIDS - Q23020346
TDS
25 U
mg/L
Sample #: 2023000557
Matrix: GW RCRA
Page 8 of 21
Method Analysis Date/Time Analyst
SM 2320B4d 02/23/2023 10:36 SNEGLIA
0.1
0.0154
1
EPA 9056A
02/16/2023 07:07
BGN9034
0.1
0.0479
1
EPA 9056A
02/16/2023 07:07
BGN9034
0.1
0.0209
1
EPA 9056A
02/16/2023 07:07
BGN9034
0.023
0.002
1
EPA 9056A
02/16/2023 07:07
BGN9034
0.1
0.0428
1
EPA 9056A
02/16/2023 07:07
BGN9034
0.05
0.01
1
EPA 7470A
02/21/2023 12:10
JAA5429
0.005
0.002
1
SW 6010D
02/20/2023 14:58
CELL106
0.05
0.005
1
SW 6010D
02/20/2023 14:58
CELL106
0.05
0.012
1
SW 6010D
02/20/2023 14:58
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:58
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:58
CELL106
0.01
0.004
1
SW 6010D
02/20/2023 14:58
CELL106
0.02
0.008
1
SW 6010D
02/20/2023 14:58
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:58
CELL106
0.005
0.001
1
SW 6010D
02/20/2023 14:58
CELL106
0.1
0.031
1
SW 6010D
02/20/2023 14:58
CELL106
0.05
0.017
1
SW 6010D
02/20/2023 14:58
CELL106
0.005
0.004
1
SW 6010D
02/20/2023 14:58
CELL106
1
0.104
1
SW 6020B
02/20/2023 17:41
MHALL3
1
0.111
1
SW 6020B
02/20/2023 17:41
MHALL3
1
0.249
1
SW 6020B
02/20/2023 17:41
MHALL3
1
0.032
1
SW 6020B
02/20/2023 17:41
MHALL3
1
0.077
1
SW 6020B
02/20/2023 17:41
MHALL3
1
0.037
1
SW 6020B
02/20/2023 17:41
MHALL3
1
0.193
1
SW 6020B
02/20/2023 17:41
MHALL3
1
0.035
1
SW 6020B
02/20/2023 17:41
MHALL3
0.2
0.041
1
SW 6020B
02/20/2023 17:41
MHALL3
0.3
0.114
1
SW 6020B
02/20/2023 17:41
MHALL3
25
25
1
SM2540C
02/17/2023 08:44
EBATIAN

Certificate of Laboratory Analysis Page 9 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Site: MSS FB-20230215-1200
Field Blank
Sample #: 2023000558
Collection Date: 02/15/2023 12:00 PM
Loc code: MSS QA
Matrix: GW
RCRA
Analyte
Result
Units Qualifiers
RDL
MDL
DF
Method
Analysis Date/Time
Analyst
LOW LEVEL ALKALINITY (FIXED END POINT) - Q23020445
Total Alkalinity as CaCO3
1.7 U
mg/L
5
1.7
1
SM 2320B4d
02/23/2023 10:42
SNEGLIA
(CaCO3)
INORGANIC IONS BY IC - Q23020309
Chloride
0.0154 U
mg/L
0.1
0.0154
1
EPA 9056A
02/16/2023 07:22
BGN9034
Fluoride
0.0479 U
mg/L
0.1
0.0479
1
EPA 9056A
02/16/2023 07:22
BGN9034
Nitrate
0.0209 U
mg/L
0.1
0.0209
1
EPA 9056A
02/16/2023 07:22
BGN9034
Nitrate as N
0.002 U
mg-N/L
0.023
0.002
1
EPA 9056A
02/16/2023 07:22
BGN9034
Sulfate
0.0428 U
mg/L
0.1
0.0428
1
EPA 9056A
02/16/2023 07:22
BGN9034
MERCURY (COLD VAPOR) IN WATER - Q23020401
Mercury (Hg)
0.01 U
ug/L
0.05
0.01
1
EPA 7470A
02/21/2023 12:12
JAA5429
TOTAL RECOVERABLE METALS BY ICP - Q23020351
Barium (Ba)
0.002 U
mg/L
0.005
0.002
1
SW 6010D
02/20/2023 15:04
CELL106
Boron (B)
0.005 U
mg/L
0.05
0.005
1
SW 6010D
02/20/2023 15:04
CELL106
Calcium (Ca)
0.012 U
mg/L
0.05
0.012
1
SW 6010D
02/20/2023 15:04
CELL106
Chromium (Cr)
0.001 U
mg/L
0.005
0.001
1
SW 6010D
02/20/2023 15:04
CELL106
Copper (Cu)
0.001 U
mg/L
0.005
0.001
1
SW 6010D
02/20/2023 15:04
CELL106
Iron (Fe)
0.018
mg/L
0.01
0.004
1
SW 6010D
02/20/2023 15:04
CELL106
Magnesium (Mg)
0.008 U
mg/L
0.02
0.008
1
SW 6010D
02/20/2023 15:04
CELL106
Manganese (Mn)
0.001 U
mg/L
0.005
0.001
1
SW 6010D
02/20/2023 15:04
CELL106
Nickel (Ni)
0.001 U
mg/L
0.005
0.001
1
SW 6010D
02/20/2023 15:04
CELL106
Potassium (K)
0.031 U
mg/L
0.1
0.031
1
SW 6010D
02/20/2023 15:04
CELL106
Sodium (Na)
0.017 U
mg/L
0.05
0.017
1
SW 6010D
02/20/2023 15:04
CELL106
Zinc (Zn)
0.004 U
mg/L
0.005
0.004
1
SW 6010D
02/20/2023 15:04
CELL106
TOTAL RECOVERABLE METALS BY ICP-MS - Q23020356
Antimony (Sb)
0.104 U
ug/L
1
0.104
1
SW 6020B
02/20/2023 17:49
MHALL3
Arsenic (As)
0.111 U
ug/L
1
0.111
1
SW 6020B
02/20/2023 17:49
MHALL3
Beryllium (Be)
0.249 U
ug/L
1
0.249
1
SW 6020B
02/20/2023 17:49
MHALL3
Cadmium (Cd)
0.032 U
ug/L
1
0.032
1
SW 6020B
02/20/2023 17:49
MHALL3
Cobalt (Co)
0.077 U
ug/L
1
0.077
1
SW 6020B
02/20/2023 17:49
MHALL3
Lead (Pb)
0.037 U
ug/L
1
0.037
1
SW 6020B
02/20/2023 17:49
MHALL3
Selenium (Se)
0.193 U
ug/L
1
0.193
1
SW 6020B
02/20/2023 17:49
MHALL3
Silver (Ag)
0.035 U
ug/L
1
0.035
1
SW 6020B
02/20/2023 17:49
MHALL3
Thallium (TI) Low Level
0.041 U
ug/L
0.2
0.041
1
SW 6020B
02/20/2023 17:49
MHALL3
Vanadium (V) Low Level
0.114 U
ug/L
0.3
0.114
1
SW 6020B
02/20/2023 17:49
MHALL3

Certificate of Laboratory Analysis Page 10 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Qualifiers:
J Analyte detected above the MDL, but below the RL. Analyte concentration should be considered an estimate.

Certificate of Laboratory Analysis Page 11 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Level II QC Summary
Q23020432 ALK_FIX4.5 ALKALINITY (FIXED END POINT 4.5)
Duplicate # 1
Parameter Measured Final
Total Alkalinity as CaCO3 37.9
Duplicate # 2
Parameter Measured Final
Total Alkalinity as CaCO3 52.2
LCS # 1
Parameter Measured Final
Total Alkalinity as CaCO3 62.1
LCS # 2
Units Dil MDL
mg/L 1 1.7
(CaCO3)
Units Dil MDL
mg/L 1 1.7
(CaCO3)
Parent Sample: J23020226 -- 2023003201
RPD
4.14
Parent Sample: J23020226 -- 2023003202
RPD
4.97
Units Dil MDL Spike % Recovery LCL UCL
mg/L 1 1.7 64.8 95.8 85 115
(CaCO3)
Qualifier
Qualifier
Qualifier
Parameter Measured Final Units Dil MDL Spike % Recovery LCL UCL Qualifier
Total Alkalinity as CaCO3 63.6 mg/L 1 1.7 64.8 98.2 85 115
(CaCO3)

Certificate of Laboratory Analysis Page 12 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Level II QC Summary
Q23020445 ALK_LL_Fix LOW LEVEL ALKALINITY (FIXED END POINT)
LCS # 1
Parameter Measured Final Units Dil MDL Spike % Recovery LCL UCL
Total Alkalinity as CaCO3 62.8 mg/L 1 1.7 64.8 96.9 85 115
(CaCO3)
LCSD # 1
Parameter Measured Final Units Dil MDL S ike % Recovery LCL UCL RPD
Total Alkalinity as CaCO3 61.8 mg/L 1 1.7 64.8 95.3 85 115 1.67
(CaCO3)
LCS # 2
Parameter Measured Final Units Dil MDL Spike % Recovery LCL UCL
Total Alkalinity as CaCO3 64.1 mg/L 1 1.7 64.8 98.9 85 115
(CaCO3)
LCSD # 2
Parameter Measured Final Units Dil MDL Spike % Recovery LCL UCL RPD
Total Alkalinity as CaCO3 63.7 mg/L 1 1.7 64.8 98.3 85 115 0.579
(CaCO3)
Qualifier
Qualifier
Qualifier
Qualifier

Certificate of Laboratory Analysis Page 13 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Level II QC Summary
Q23020309 Dionex INORGANIC IONS BY IC
Blank # 1
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
Chloride
0
0
mg/L
1
0.0154
0.1
< MDL
Fluoride
0
0
mg/L
1
0.0479
0.1
< MDL
Nitrate
0
0
mg/L
1
0.0209
0.1
< MDL
Sulfate
0
0
mg/L
1
0.0428
0.1
< MDL
LCS # 1
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Qualifier
Chloride
2.03
2.03
mg/L
1
0.0154
2
102
80
120
Fluoride
2.06
2.06
mg/L
1
0.0479
2
103
80
120
Nitrate
2.04
2.04
mg/L
1
0.0209
2
102
80
120
Sulfate
2.03
2.03
mg/L
1
0.0428
2
101
80
120
MS # 1
Parent Sample:
J23010144 -- 2023000555
Parameter
Measured
Final
Units
Dil
MDL
S ike
% Recovery
LCL
UCL
Qualifier
Chloride
5.49
5.49
mg/L
1
0.0154
3
102
80
120
Fluoride
2.99
2.99
mg/L
1
0.0479
3
98
80
120
Nitrate
3.87
3.87
mg/L
1
0.0209
3
103
80
120
Sulfate
3.24
3.24
mg/L
1
0.0428
3
97.3
80
120
MSD # 1
Parent Sample:
J23010144 -- 2023000555
Parameter
Measured
Final
Units
Dil
MDL
S ike
% Recovery
LCL
UCL
RPD
Qualifier
Chloride
5.48
5.48
mg/L
1
0.0154
3
101
80
120
0.394
Fluoride
3.01
3.01
mg/L
1
0.0479
3
98.6
80
120
0.644
Nitrate
3.84
3.84
mg/L
1
0.0209
3
102
80
120
0.909
Sulfate
3.29
3.29
mg/L
1
0.0428
3
99.2
80
120
1.97

Certificate of Laboratory Analysis Page 14 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Level II QC Summary
Q23020401 AG 7470
MERCURY (COLD VAPOR) IN WATER
Blank # 1
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
Mercury (Hg)
-0.004
-0.004
ug/L
1
0.01
0.05
< MDL
Blank # 2
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
Mercury (Hg)
0
0
ug/L
1
0.01
0.05
< MDL
Blank # 3
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
Mercury (Hg)
-0.005
-0.005
ug/L
1
0.01
0.05
< MDL
Blank # 4
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
Mercury (Hg)
-0.003
-0.003
ug/L
1
0.01
0.05
< MDL
LCS # 1
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery LCL UCL
Qualifier
Mercury (Hg)
1.94
1.94
ug/L
1
0.01
2
97.2 85 115
LCS # 2
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
Mercury (Hg)
1.98
1.98
ug/L
1
0.01
2
99
85 115
MS # 1
Parent Sample:
J23010144 -- 2023000553
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
Mercury (Hg)
0.992
0.992
ug/L
1
0.01
1
99.2
75 125
MSD # 1
Parent Sample:
J23010144 -- 2023000553
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL UCL RPD
Qualifier
Mercury (Hg)
1.02
1.02
ug/L
1
0.01
1
102
75 125 2.39
MS # 2
Parent Sample:
J23010146 -- 2023002069
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
Mercury (Hg)
1.05
1.05
ug/L
1
0.01
1
105
75 125
MSD # 2
Parent Sample:
J23010146 -- 2023002069
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL UCL RPD
Qualifier
Mercury (Hg)
1.01
1.01
ug/L
1
0.01
1
101
75 125 3.69
MS # 3
Parent Sample:
J23010316 -- 2023001406
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
Mercury (Hg)
1.02
1.02
ug/L
1
0.01
1
101
75 125

Certificate of Laboratory Analysis Page 15 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Level II QC Summary
Q23020401 HG 7470 MERCURY (COLD VAPOR) IN WATER
MSD # 3 Parent Sample: J23010316 -- 2023001406
Parameter Measured Final Units Dil MDL Spike % Recovery LCL UCL RPD Qualifier
Mercury (Hg) 1.01 1.01 ug/L 1 0.01 1 99.9 75 125 1.49

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23010144
Level II QC Summary
Q23020351 ICP_TRM TOTAL RECOVERABLE METALS BY ICP
Blank # 1
Page 16 of 21
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Barium (Ba)
-0.000829
-0.000829
mg/L
1
0.002
0.005
< MDL
Boron (B)
0.00225
0.00225
mg/L
1
0.005
0.05
< MDL
Calcium (Ca)
0.00541
0.00541
mg/L
1
0.012
0.05
< MDL
Chromium (Cr)
-0.000488
-0.000488
mg/L
1
0.001
0.005
< MDL
Copper (Cu)
-0.000465
-0.000465
mg/L
1
0.001
0.005
< MDL
Iron (Fe)
0.00189
0.00189
mg/L
1
0.004
0.01
< MDL
Magnesium (Mg)
0.00127
0.00127
mg/L
1
0.008
0.02
< MDL
Manganese (Mn)
0.000059
0.000059
mg/L
1
0.001
0.005
< MDL
Nickel (Ni)
-0.00184
-0.00184
mg/L
1
0.001
0.005
< MDL
Potassium (K)
0.00491
0.00491
mg/L
1
0.031
0.1
< MDL
Sodium (Na)
-0.00275
-0.00275
mg/L
1
0.017
0.05
< MDL
Zinc (Zn)
-0.000613
-0.000613
mg/L
1
0.004
0.005
< MDL
LCS # 1
Parameter
Measured
Final
Units
Dil
MDL
S ike
% Recovery
LCL
UCL
Barium (Ba)
5.11
5.11
mg/L
1
0.002
5
102
80
120
Boron (B)
5.06
5.06
mg/L
1
0.005
5
101
80
120
Calcium (Ca)
5.2
5.2
mg/L
1
0.012
5
104
80
120
Chromium (Cr)
5.08
5.08
mg/L
1
0.001
5
102
80
120
Copper (Cu)
5.04
5.04
mg/L
1
0.001
5
101
80
120
Iron (Fe)
5.07
5.07
mg/L
1
0.004
5
101
80
120
Magnesium (Mg)
5.18
5.18
mg/L
1
0.008
5
104
80
120
Manganese (Mn)
5.07
5.07
mg/L
1
0.001
5
101
80
120
Nickel (Ni)
5.08
5.08
mg/L
1
0.001
5
102
80
120
Potassium (K)
5
5
mg/L
1
0.031
5
100
80
120
Sodium (Na)
4.94
4.94
mg/L
1
0.017
5
98.8
80
120
Zinc (Zn)
5.21
5.21
mg/L
1
0.004
5
104
80
120
MS # 1
Parent Sample:
J23010144 -- 2023000554
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Barium (Ba)
5.36
5.36
mg/L
1
0.002
5
103
75
125
Boron (B)
5.09
5.09
mg/L
1
0.005
5
102
75
125
Calcium (Ca)
5.61
5.61
mg/L
1
0.012
5
104
75
125
Chromium (Cr)
5.13
5.13
mg/L
1
0.001
5
103
75
125
Copper (Cu)
5.04
5.04
mg/L
1
0.001
5
101
75
125
Iron (Fe)
5.08
5.08
mg/L
1
0.004
5
101
75
125
Magnesium (Mg)
8.32
8.32
mg/L
1
0.008
5
105
75
125
Manganese (Mn)
5.12
5.12
mg/L
1
0.001
5
102
75
125
Nickel (Ni)
4.88
4.88
mg/L
1
0.001
5
97.5
75
125
Potassium (K)
7.18
7.18
mg/L
1
0.031
5
101
75
125
Qualifier
Qualifier
Qualifier

Certificate of Laboratory Analysis Page 17 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Level II QC Summary
Q23020351 ICP_TRM TOTAL RECOVERABLE METALS BY 1CP
MS # 1
Parameter
Measured
Final
Sodium (Na)
10.8
10.8
Zinc (Zn)
5.21
5.21
MSD # 1
Parameter
Measured
Final
Barium (Ba)
5.35
5.35
Boron (B)
5.08
5.08
Calcium (Ca)
5.62
5.62
Chromium (Cr)
5.1
5.1
Copper (Cu)
5.04
5.04
Iron (Fe)
5.1
5.1
Magnesium (Mg)
8.3
8.3
Manganese (Mn)
5.13
5.13
Nickel (Ni)
5.09
5.09
Potassium (K)
7.18
7.18
Sodium (Na)
10.8
10.8
Zinc (Zn)
5.21
5.21
Parent Sample:
J23010144 -- 2023000554
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
mg/L
1
0.017
5
100
75
125
mg/L
1
0.004
5
104
75
125
Parent Sample:
J23010144
-- 2023000554
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
RPD
mg/L
1
0.002
5
103
75
125
0.149
mg/L
1
0.005
5
101
75
125
0.275
mg/L
1
0.012
5
104
75
125
0.267
mg/L
1
0.001
5
102
75
125
0.528
mg/L
1
0.001
5
101
75
125
0.139
mg/L
1
0.004
5
102
75
125
0.491
mg/L
1
0.008
5
104
75
125
0.265
mg/L
1
0.001
5
102
75
125
0.0781
mg/L
1
0.001
5
102
75
125
4.29
mg/L
1
0.031
5
101
75
125
0.0139
mg/L
1
0.017
5
101
75
125
0.167
mg/L
1
0.004
5
104
75
125
0.0768
Qualifier
Qualifier

Certificate of Laboratory Analysis Page 18 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Level II QC Summary
Q23020356 IMS_TRM TOTAL RECOVERABLE METALS BY ICP-MS
Blank # 1
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Antimony (Sb)
-0.011
-0.011
ug/L
1
0.104
1
< MDL
Arsenic (As)
0.036
0.036
ug/L
1
0.111
1
< MDL
Beryllium (Be)
-0.017
-0.017
ug/L
1
0.249
1
< MDL
Cadmium (Cd)
0.008
0.008
ug/L
1
0.032
1
< MDL
Cobalt (Co)
0.017
0.017
ug/L
1
0.077
1
< MDL
Lead (Pb)
0.01
0.01
ug/L
1
0.037
1
< MDL
Selenium (Se)
0.025
0.025
ug/L
1
0.193
1
< MDL
Silver (Ag)
0.004
0.004
ug/L
1
0.035
1
< MDL
Thallium (TI) Low Level
0.006
0.006
ug/L
1
0.041
0.2
< MDL
Vanadium (V) Low Level
0.016
0.016
ug/L
1
0.114
0.3
< MDL
LCS # 1
Parameter
Measured
Final
Units
Dil
MDL
S ike
% Recovery
LCL
UCL
Antimony (Sb)
51.6
51.6
ug/L
1
0.104
50
103
80
120
Arsenic (As)
52.3
52.3
ug/L
1
0.111
50
105
80
120
Beryllium (Be)
51.3
51.3
ug/L
1
0.249
50
103
80
120
Cadmium (Cd)
52.8
52.8
ug/L
1
0.032
50
106
80
120
Cobalt (Co)
52
52
ug/L
1
0.077
50
104
80
120
Lead (Pb)
53.1
53.1
ug/L
1
0.037
50
106
80
120
Selenium (Se)
51.2
51.2
ug/L
1
0.193
50
102
80
120
Silver (Ag)
53.1
53.1
ug/L
1
0.035
50
106
80
120
Thallium (TI) Low Level
51.5
51.5
ug/L
1
0.041
50
103
80
120
Vanadium (V) Low Level
52.3
52.3
ug/L
1
0.114
50
105
80
120
MS # 1
Parent Sample:
J23010144 -- 2023000553
Parameter
Measured
Final
Units
Dil
MDL
S ike
% Recovery
LCL
UCL
Antimony (Sb)
52.2
52.2
ug/L
1
0.104
50
104
75
125
Arsenic (As)
52.6
52.6
ug/L
1
0.111
50
105
75
125
Beryllium (Be)
54.3
54.3
ug/L
1
0.249
50
108
75
125
Cadmium (Cd)
52.5
52.5
ug/L
1
0.032
50
105
75
125
Cobalt (Co)
52.7
52.7
ug/L
1
0.077
50
105
75
125
Lead (Pb)
53.6
53.6
ug/L
1
0.037
50
106
75
125
Selenium (Se)
108
108
ug/L
1
0.193
50
102
75
125
Silver (Ag)
52.8
52.8
ug/L
1
0.035
50
105
75
125
Thallium (TI) Low Level
51.4
51.4
ug/L
1
0.041
50
103
75
125
Vanadium (V) Low Level
55.3
55.3
ug/L
1
0.114
50
107
75
125
MSD # 1
Parent Sample:
J23010144 -- 2023000553
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL RPD
Antimony (Sb)
52.9
52.9
ug/L
1
0.104
50
106
75
125 1.28
Qualifier
Qualifier
Qualifier
Qualifier

Certificate of Laboratory Analysis Page 19 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Level II QC Summary
Q23020356 IMS_TRM TOTAL RECOVERABLE METALS BY ICP-MS
MSD # 1
Parameter
Measured
Final
Units
Dil
MDL
Arsenic (As)
52.9
52.9
ug/L
1
0.111
Beryllium (Be)
53.8
53.8
ug/L
1
0.249
Cadmium (Cd)
53.5
53.5
ug/L
1
0.032
Cobalt (Co)
53.3
53.3
ug/L
1
0.077
Lead (Pb)
54.2
54.2
ug/L
1
0.037
Selenium (Se)
108
108
ug/L
1
0.193
Silver (Ag)
53.6
53.6
ug/L
1
0.035
Thallium (TI) Low Level
52.2
52.2
ug/L
1
0.041
Vanadium (V) Low Level
55.7
55.7
ug/L
1
0.114
Parent Sample:
J23010144 -- 2023000553
Spike
% Recovery
LCL
UCL
RPD
50
105
75
125
0.553
50
107
75
125
0.932
50
107
75
125
1.82
50
106
75
125
1.1
50
107
75
125
1.15
50
104
75
125
1.13
50
107
75
125
1.62
50
104
75
125
1.56
50
108
75
125
0.785
Qualifier

Certificate of Laboratory Analysis Page 20 of 21
This report shall not be reproduced, except in full.
Order # J23010144
Level II QC Summary
Q23020346 TDS TOTAL DISSOLVED SOLIDS
Blank # 1
Blank # 2
Parameter Measured Final
TDS 0
Parameter Measured Final
TDS 0
Duplicate # 1
Parameter Measured Final
TDS 236
Duplicate # 2
Parameter Measured Final
TDS 74
LCS # 1
LCS # 2
Parameter Measured Final
TDS 484
Parameter Measured Final
TDS 492
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
mg/L
1
25
25
< MDL
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
mg/L
1
25
25
< MDL
Parent Sample:
J23010099 -- 2023000437
Units
Dil
MDL
RPD
Qualifier
mg/L
1
25
0.425
Parent Sample:
J23020307 -- 2023003518
Units
Dil
MDL
RPD
Qualifier
mg/L
1
25
1.36
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Qualifier
mg/L
1
25
500
96.8
90
110
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Qualifier
mg/L
1
25
500
98.4
90
110

CHAIN OF CUSTODY RECORD AND ANALYSIS REQUEST FORM
DUKE Duke Energy Analytical Laboratory ._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._.Ana
NW COee M000A2 (BWlding ]a6) i ;Order# J23010144
`CI ENERGY 1°"BNeeOeF""R° "
Ilunlar.vOk, N.C. 26078
(704)8764246 i ILogeb'
_ ___ p.::p 41F -119t___________
Project Name MARSHALL DRY ASH LANDFILL N— No: !Vendor
cal Laboratory Use Only_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._.i
Matrix WATER
Daee,} TIm' a
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o., orgm..no r..m
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SAMPLE PROGRAM
Ground Water X_ NPDES_
Drinking Water _ UST
Page 21 of 21
Page _1_of 1
DISTRIBUTION
ORIGINAL to LAB, COPY to CLIENT
-
PERMIT# 18-04
Client ASHLEY HEALY, BRYAN MOELLER, PC #-
-- - - - P_161.---'-'-"--------------"-'--'-.RCRA
Waste_.._.._..--
--------'----..
DEE O'BRIEN, JOSH STOWE
Filtration (0.46 um)
4
Unfiltered
4 Filtered
Operating Unit: MS00 Process:NGRDWTR Account: i
1-.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._..__._..
Project: AMS000540 Activity ID: Facility ID:MSS
TEST SM
Preservative
-
Container Volume (mL)
ICE
300
ICE
600 600
..�.
Program / EOutS Task Code: MSS/LF Sub-ProgramlTask Code:
Container Type
PET
HDPE
PET
¢
ICPSW6010D: Ba,
B.C., Cu, or, Fe,
m
- -------------------Sample Description or ID
SAMPLE ID i
NUMBER -
Date
Customer t0 complete all appropriate non -shaded areas. y o
Collection Information
d.
c 'q
Time Printed Name Signature o
ALKALINITY,
EPA9066A: Cl,
F. 1403-N (48-Hr
Hold Ti­), SOs
Mg, Mn, K, No, Ni,
Zn(12) IMS.
SW6020B: Sb, As,
Be, C 1 Co, Pb, Se,
Ag, TI (LL), V(LL)
(10I Ng (SW 7470A)
h
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•. 2023000562 •.
M66-MW p.y
x
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2023000553 !
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2023000655 i
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2023000555 !
MSS_FD-1OL30us-
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2023000557
MSS_EB-2VL30LIS-1tLr
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x
1
1
1
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2023000568 •.
MSS_FB_LOLIOUT_ 1100
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F,
Ry / 6 rr5
x
1
1
2
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ustomer to sign & date ow
Relinquished By ateRime
Aecept By:
DatelTime
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V
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Requested Turnaround
Relinquished By Date?ime
Accepted By: Datel7ime
a
c
p, Q
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21 Days
14 Days r '%
Relinquished By Date/Time
Accepted By: DatelTime
Seal/Locked By Date/Time
Sealed/Lmk Opened By DateRime
n ?
E a
4 a
p
`7 Days
`Othef
Comments Regulatory Agency: NCDENR/DWM - SW Section NCDEQ EDD Format Required EQUIS EDD Required
U
` Add. Cost Will Apply

Analytical Data Review Checklist - Aqueous
Facility/Site
"aram Station
State
NC
Location/Sample IDs
MW-2, MW-3, MW-4
References:
❑v ❑
Duke Central Lab
Lab Report ID Sample Date Sample Receipt Date Analysis Complete Date Groundwater
123010144 2/15/2023 2/16/2023 3/3/2023 ❑ Surface Water
❑ Other
National Functional Guidelines for Inorganic Superfund Methods Data Review (USEPA 2020)
Guidance on Environmental Data Verification and Data Validation (USEPA 2002)
Radiochemical Data Verification and Validation (MARLAP 2004)
n of Custody
I� 1) Do the sample IDs and laboratory analyses recorded on the Chain of Custody match the sample IDs and analyses listed in the laboratory package?
❑v
❑ l
❑
la) Do the dates and times of sampling listed on the Chain of Custody match the laboratory report?
0
❑
❑
❑
❑
(]
2) Is the sample temperature upon receipt at the laboratory recorded on the Chain of Custody form less than 6 degrees Celsius? If NO, then:
2a) Was the presence of wet ice noted in the cooler? OR
❑
❑
0
2b) Were the samples collected less than two hours prior to receipt at the lab?
❑�
❑
❑
3) Was the proper sample preservation checked and documented on the Chain of Custody or sample receipt form?
❑�
❑
❑
4) Are there any special notes, exceptions, and/or anomalies listed either on the Chain of Custody or sample receipt form?
❑
0
❑
5) Was the transfer of custody of the samples properly documented and traceable through signature, date, and time by all persons who relinquished and/or received
custody of the samples?
❑
❑ ❑�
®®Batch
6) Do the values for the field parameters listed on the Chain of Custody match the values entered in the lab report?
eAssurance/Quality
7) Was the holding time for preparation and/or analysis met for each parameter?
❑�
❑
❑
7a) Total Alkalinity, Bicarbonate Alkalinity, Carbonate Alkalinity: Analyzed within 14 days of collection
❑�
❑
❑
7b) Bromide, Chloride, Fluoride, and Sulfate (Anions): Analyzed within 28 days of collection
❑
❑
l]
7c) Sulfide: Analyzed within 7 days of collection
0
❑
❑
7d) TOC and/or Nitrate -Nitrite: Analyzed within 28 days of collection
❑
❑
l]
7e) Total Phosphorus (TP) and Dissolved TP: Analyzed within 28 days of collection
❑
❑
(]
7f) Hexavalent Chromium: Analyzed within 24 hours (unpreserved) / 28 days (preserved) of collection
0
❑
❑
7g) Mercury and Dissolved Mercury: Analyzed within 28 days of collection (preserved)
0
❑
❑
7h) Total and Dissolved Metals: Analyzed within 180 days of collection
0
❑
71) TSS and TDS: Analyzed within 7 days of collection
❑
❑
0
7J) Radionuclides: Analyzed within 180 days of collection
❑
❑
❑
❑
I]
0
7k) Methane: Analyzed within 14 days (preserved) / 7 days (unpreserved) of collection
71) Oil and Grease: Analyzed within 28 days of collection
❑�
❑
❑
8) Are there any qualifiers assigned by the laboratory and if so, are the qualifier definitions provided?
❑
❑
0
❑
a
9) Method Blank- Were any parameters detected in the method blank(s)?
9a) If YES, were any target analyses detected in the samples at concentrations less than ten times the method blank concentration?
❑
❑
❑�
❑
10) Laboratory Control Sample - Were any parameters flagged by the lab as being outside the limits of control in the associated laboratory control sample (LCS)?
10a) If YES, was the parameter recovery less than 50 percent or greater than 150 percent?
❑
❑
❑v
10b) Were the some parameters detected in the samples?
❑�
❑
❑
11) Matrix Spike Sample - Did the laboratory provide matrix spike results (MS/MSD)? If so, then:
❑�
❑
❑
111a) Was the original sample spiked a project sample? If so, then:
❑
❑�
❑
11 b) Were any parameters flagged by the lab as being outside the limits of control in the associated matrix spike sample?

Batch
7❑!Assurance/Quality
0 ❑ ❑ 12) Laboratory Duplicate Sample - Did the laboratory provide lab duplicate sample results? If so, then:
0 ❑ 12a) Was the sample analyzed as a laboratory duplicate a project sample? If so, then:
❑ ❑ 0 12b) Were any parameters flagged by the lab as being outside the limits of control in the laboratory duplicate sample?
0 ❑ ❑ 13) Field Duplicate Sample - Is the relative percent difference between the parent and field duplicate sample results greater than 35 percent?
0 ❑ ❑ 14) Field/Equipment/Trip Blanks - Were any parameters detected in the associated field, equipment, and/or trip blanks?
0 ❑ ❑ 14a) If yes, were any target analytes detected in the samples at a concentration less than ten times the Field/Equipment/Mia Blank concentration?
❑v
❑ ❑ 15) Were initial and continuing calibration blank information within acceptable criteria per the lab report?
❑
❑v ❑ 16) Were any reporting limits for diluted, non -detect results greater than the screening criteria?
❑ ❑ 17) Radionuclides: Are quality control sample results provided?
❑ ❑ ❑� 17a) Are any results flagged or qualified?
❑ ❑ ❑° 17b) Are Uncertainty, MDC, Tracer/ and/or Carrier/ provided for each sample?
The questions on this checklist refer to basic review of laboratory analytical reports for completeness and accuracy of data. Any responses requiring follow up action with the analytical lab or field personnel must be
noted in the summary section at the end of this form before the data can be approved for use by technical leads.
Lab Qualifiers:
J-Analyte detected above the MDL, but below the RL; analyte concentration should be considered an estimate. 7
Validation Qualifiers:
R- Result is unusable. The sample result is rejected due to serious deficiencies in meeting quality control criteria; the analyte may or may not be present in the sample.
J - Value is estimated. The result is below the reporting limit or potentially biased based on data validation.
U-Analyte was analyzed form but not detected above the minimum detectable concentration (MDC) or method detection limit (MDL).
B -Target analyte detected in the method blank an in the sample at a concentration less than 10x the blank concentration.
• MW-1 not sampled - dry.
• The RPD between MW-2 and the field duplicate is greater than 35%for Iron (0.365/0.204 mg/L) and Barium (0.489/0.319 mg/L).
• Boron (0.005 mg/L) was detected in the Equipment Blank; Boron was also detected in the samples at concentrations less than 10x the blank concentration.
• Iron (0.018 mg/L) was detected in the Equipment Blank; Iron was also detected in MW-3 at a concentration less than 10x the blank concentration.
Review Determination: ❑ Usable 0 Usable with Required Actions ❑ Unusable
Signatures: Date:
Data Quality Reviewer REB 3/17/2023
Technical Lead GTC 6/9/2023

Semiannual Water Quality Monitoring Report — February 2023 Sampling Event
Marshal Steam Station —Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
r
APPENDIX C
TIME VERSUS CONSTITUENT CONCENTRATION PLOTS
L7
synTerra
Science & Engineering Consultants

MW-2
9
- - - - - - - - - - - - - - - - - -
8
7
6
V)
u 5
Q 4
3
2
1/1/1990 1/1/1995 1/1/2000 1/1/2005 1/1/2010 1/1/201�
M W-4
9
8
7
n
6
u
5
Q
LEGEND NOTES
BTV - Background Threshold Values
Non -detect S.U.—Standard Units
Detect
15ANCACO2LStandard for groundwater (6.5-8.5)
4
M W-3
9
- - - - - - - - - - - - - - - - - -
8
7
6
5 y fN
Q 4
3
2
1 /1 /1990 1 /1 /1995 1 /1 /2000 1 /1 /2005 1 /1 /2010 1 /1 /2015 1 /1 /2020
3
1 /1 /1990 1 /1 /1995 1 /1 /2000 1 /1 /2005 1 /1 /2010 1 /1 /2015 1 /1 /2020
if . DUKE DRAWN BY: D. AVARD
ENERGY REVISED BY: D. AVARD
CHECKED BY: T. COLTON
APPROVED BY: T. COLTON
`7 PROJECT MANAGER: T. COLTON
synTerra
www.synter
DATE: 06/06//2022
APPENDIX C
DATE: 06/08/2023
TIME VERSUS PH CONCENTRATIONS
DATE: 06/08/2023
DRY ASH LANDFILL SEMIANNUAL
DATE: 06/08/2023
WATER QUALITY MONITORING REPORT
MARSHALL STEAM STATION
TERRELL, NORTH CAROLINA
om

M W-4
5
J
Cn
4
M
O
M
3
L
V
O
2
V
O
1
.E
a
0
1/1/2011 1/1/2013
1/1/2015 1/1/2017
1/1/2019
1/1/2021
1/1/2023
Date
LEGEND
NOTES
DUKE
DRAWN BY: D. AVARD
DATE:06/06//2022
APPENDIX C
� Non -detect
µg/L— milligrams per liter
--ENERGY
REVISED BY: D. AVARD
DATE: 04/28/2023
TIME VERSUS ANTIMONY CONCENTRATIONS
Detect
CHECKED BY: T. COLTON
DATE: 04/28/2023
DRY ASH LANDFILL SEMIANNUAL
APPROVED BY: T. COLTON
DATE: 04/28/2023
WATER QUALITY MONITORING REPORT
15A NCAC 02L Standard for
Antimony in groundwater (1 Ng/L )
4`
7
PROJECT MANAGER: T. COLTON
MARSHALL STEAM STATION
synTerra
TERRELL, NORTH CAROLINA
www. synterra Corp. com

MW-2
3600
3000
CM
M
2400
*O-,
M
L
V
=
1800
O
V
O
L.
1200
00
600
1/1/2007 1/1/2010
1/1/2013 1/1/2016
1/1/2019 1/1/2022
Date
LEGEND
NOTES
DUKE
DRAWN BY: D. AVARD DATE:06/06//2022
APPENDIX C
� Non -detect
µg/L— microgramsperliter
--ENERGY
REVISED BY: D.AVARD DATE: 04/28/2023
TIME VERSUS BORON CONCENTRATIONS
Detect
CHECKED BY: T. CO TON DATE: 04/28/2023
DRY ASH LANDFILL SEMIANNUAL
APPROVED BY: T. COLTON DATE: 04/28/2023
WATER QUALITY MONITORING REPORT
15A NCAC 02L Standard for Boron
in groundwater (700 Ng/L )
4`
7
PROJECT MANAGER: T.COLTON
MARSHALL STEAM STATION
synTerra
TERRELL, NORTH CAROLINA
www. synterra Corp. com

MW-3
10
J
8
ZL
00�
6
i
a.+
V
=
4
O
V
MW
MFG
2
O
V
0
1 /1 /2018 1 /1 /2019
1 /1 /2020 1 /1 /2021
1 /1 /2022
1 /1 /2023
Date
LEGEND
NOTES
DUKE
DRAWN BY: D. AVARD
DATE:06/06//2022
APPENDIX C
� Non -detect
µg /L— milligrams per liter
--ENERGY
REVISED BY: D. AVARD
DATE: 04/28/2023
TIME VERSUS COBALT CONCENTRATIONS
Detect
CHECKED BY: T. COLTON
DATE: 04/28/2023
DRY ASH LANDFILL SEMIANNUAL
APPROVED BY: T. COLTON
DATE: 04/28/2023
WATER QUALITY MONITORING REPORT
15A NCAC 02L Standard for Cobalt
4`
7
PROJECT MANAGER: T. COLTON
MARSHALL STEAM STATION
in groundwater (1 Ng/L )
synTerra
TERRELL, NORTH CAROLINA
www.synterracorp.com

M W-4
3000
J
2400
ZL
,O
1800
i
a.+
v
1200
O
V
600
0
1 /1 /1990 1 /1 /1995
1 /1 /2000 1 /1 /2005
1 /1 /2010
1 /1 /2015
1 /1 /2020
Date
LEGEND
NOTES
DUKE
DRAWN BY: D. AVARD
DATE:06/06//2022
APPENDIX C
� Non -detect
µg/L— milligramsperliter
� ` ENERGY
REVISED BY: D.AVARD
DATE: 04/28/2023
TIME VERSUS IRON CONCENTRATIONS
Detect
CHECKED BY: T. CO TON
DATE: 04/28/2023
DRY ASH LANDFILL SEMIANNUAL
APPROVED BY: T. COLTON
DATE: 04/28/2023
WATER QUALITY MONITORING REPORT
15A NCAC 02L Standard for Iron in
groundwater (300 Ng/L )
4`
7
PROJECT MANAGER: T. COLTON
MARSHALL STEAM STATION
synTerra
TERRELL, NORTH CAROLINA
www.synterracorp.com

MW-2
65
J
01
52
O
39
L
U
O
26
V
E
3
=
O
13
0
1 /1 /1990 1 /1 /1995
1 /1 /2000 1 /1 /2005
1 /1 /2010
1 /1 /2015
1 /1 /2020
Date
LEGEND
NOTES
DUKE
DRAWN BY: D. AVARD
DATE:06/06//2022
APPENDIX C
� Non -detect
µg/L— milligramsperliter
-`ENERGY
REVISED BY: D.AVARD
DATE: 04/28/2023
TIME VERSUS SELENIUM CONCENTRATIONS
Detect
CHECKED BY: T. COLTON
DATE: 04/28/2023
DRY ASH LANDFILL SEMIANNUAL
APPROVED BY: T. COLTON
DATE: 04/28/2023
WATER QUALITY MONITORING REPORT
15A NCAC 02L Standard for
selenium in groundwater (20 Ng/L )
4`
7
PROJECT MANAGER: T. COLTON
MARSHALL STEAM STATION
synTerra
TERRELL, NORTH CAROLINA
www. synterra Corp. com