1804_DukeMarshall_DALF_GWMR_FID1822139_20231202

(' DUKE
ENERGY-.
December 2, 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 DPE 36A
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 August 9, 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 February 2024 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. Healy(abduke-energy.com or [phone].
Respectfully,
Ashley Healy, P.G.
Environmental Services
Attachments: Semiannual Water Quality Monitoring Report — August 2023 Sampling Event — Dry Ash Landfill
(SynTerra, December 2023)
cc (via e-mail): Claire Osborn, NCDEQ
Elizabeth Werner, NCDEQ
www.duke-energy.com Page 1 of 2

Sherri Stanley, NCDEQ
Ed Mussler, NCDEQ
Dan Zakary, Duke Energy
Scott La Sala, Duke Energy
Tyler Hardin, 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 August 9, 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
12/1/2023
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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REPORT VERIFICATION
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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: 12/1/2023
Date: 12/1/2023
Licensed Geologist Seal:
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148 River Street, Suite 220
Greenville, SC 29601
North Carolina Geological Corporation Number C-387

17
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synsynterracorp.com
SEMIANNUAL
WATER QUALITY MONITORING REPORT
AUGUST 2023 SAMPLING EVENT
DRY ASH LANDFILL
PERMIT NO. 1804-INDUS)
MARSHALL STEAM STATION
8320 NC HIGHWAY 150E
TERRELL, NORTH CAROLINA
DECEMBER 1, 2023
PREPARED FOR
& DUKE
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DUKE ENERGY CAROLINAS, LLC
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Craig Eady, L.G. 1599
Senior Peer Reviewer
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David Avard
Project Scientist
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G. Thomas Colton, P.E. 056667
Associate Engineer

Semiannual Water Quality Monitoring Report — August 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 Semiannual 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 — August 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 Greater Than Groundwater Quality
Standards
LIST OF APPENDICES
Appendix A Field Sampling Forms
Appendix B Laboratory Report and Chain -of -Custody Forms
Appendix C Time Versus Concentration Plots
December 2023 Page i
Project: 00.0083.61

Semiannual Water Quality Monitoring Report — August 2023 Sampling Event
Marshall Steam Station — Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
LIST OF ACRONYMS
02L standard
15A NCAC 02L .0202(g) Groundwater Quality Standards
C&D
construction and demolition
Duke Energy
Duke Energy Carolinas, LLC
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
December 2023 Page H
Project: 00.0083.61

Semiannual Water Quality Monitoring Report — August 2023 Sampling Event
Marshall Steam Station — Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
f��>• I ►19.16111111,141111 9 IQ ► I_10 1113Uffel KC11:191110 L7
This semiannual report pertains to the Duke Energy Carolinas, LLC (Duke Energy) Marshall
Steam Station (Marshall or Site) Dry Ash Landfill (Landfill) and documents the results of the
August 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 NC Highway 150E in
Terrell, Catawba County, North Carolina (Figure 1).
The North Carolina Department of Environmental Quality (NCDEQ) Division of Waste
Management (DWM) 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 in December 1987
• Construction and demolition (C&D) debris disposal: 2.75 acres (approximate); permitted
on October 17, 1989.
Those disposal areas were constructed as unlined landfills and are closed with soil covers and
under groundwater monitoring.
1.2 Hydrogeologic Setting
The 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's hydrogeologic system. Bedrock underlies the transition zone and comprises the
least permeable flow zone of the Site's hydrogeologic system, where groundwater flow occurs
December 2023 Page 1-1
Project: 00.0083.61

Semiannual Water Quality Monitoring Report — August 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 Semiannual 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 the SAP, Revision 1 (S&ME, 2020)
submitted to the DWM on August 24, 2020. The Landfill semiannual 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) were used for water -level measurements only and not sampled until they
were abandoned. A summary of monitoring well construction information is presented in
Table 1, and analytical parameter coverage for the Landfill semiannual groundwater monitoring
program is summarized in Table 2. Three groundwater monitoring locations have since been
abandoned and are detailed below:
• MW-5, abandoned in December 2020 due to construction of water redirect project
• OB-1, abandoned in April 2021 due to excavation of Phase 1
• MW-2, OB-2 (MW-6), and OB-3 (MW-7), abandoned in April and May 2023 due to
installation of a geosynthetic cap for Phase 2.
The existing groundwater monitoring locations are summarized in Table 3 and shown on
Figure 2.
December 2023 Page 1-2
Project: 00.0083.61

Semiannual Water Quality Monitoring Report — August 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
Pace Analytical Services personnel (Pace Analytical North Carolina Field Certification #5342)
performed groundwater sampling on August 9, 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 DWM, Solid Waste Section (SWS). The monitoring parameters, along
with the U.S. Environmental Protection Agency (USEPA) Solid Waste (SW)-846 analytical
methods and Title 15A North Carolina Administrative Code (NCAC) 02L .0202(g) Groundwater
Quality Standards (02L standards) are presented in Table 2.
2.2 Regulatory Criteria
• Evaluation of the semiannual monitoring analytical results is compared to the 02L
standards for groundwater.
2.3 Statement of Work
The following tasks were completed for semiannual water quality monitoring:
• Collected groundwater levels and samples on August 9, 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 DWM with this report
• Prepared and submitted this Semiannual Water Quality Monitoring Report
December 2023 Page 2-1
Project: 00.0083.61

Semiannual Water Quality Monitoring Report — August 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 August 2023. Water levels from other site wells
were used to generate figures due to the abandonment and dry solid waste program wells.
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 August 2023 indicate groundwater at
the Landfill generally flows to the south and southeast toward 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 standards.
Constituent concentrations equal to or greater than the 02L standard include pH, antimony,
cobalt, iron, and manganese in one or more wells and are noted in Table 5 by bold font. The
laboratory analytical reports are included in Appendix B. A summary of the groundwater field
and analytical results that are equal to or greater than the 02L standard (pH, antimony, cobalt,
iron, and manganese) with a comparison to historical data are presented in Table 6.
Time versus concentration plots of the locations where concentrations are greater than the 02L
standard are presented in Appendix C. Those plots demonstrate the historical concentrations at
these locations and their behavior over time.
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.
December 2023 Page 3-1
Project: 00.0083.61

Semiannual Water Quality Monitoring Report — August 2023 Sampling Event
Marshall Steam Station — Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
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.
December 2023 Page 3-2
Project: 00.0083.61

Semiannual Water Quality Monitoring Report — August 2023 Sampling Event
Marshall Steam Station — Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
L111=04=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.
December 2023 Page 4-1
Project: 00.0083.61

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

FI
INDUSTRIAL
LANDFILL #1 I I
ILF STRUCTURAL ♦�.v • /
FILL
DUKE ENERGY CAR OLINAS � - C&D LANDFILL ♦
PROPERTY LINE
ASBESTOS DRY ASH LANDFILL
♦� LANDFILL (PHASE II)
PV STRUCTURAL
FILL
ACCESS ROAD_
STRUCTURAL FILL +�
FGD RESIDUE
LANDFILL BOUNDARY
♦
ASH BASIN
BORROW AREA
DRY ASH LANDFILL
� (PHASE I)
(EXCAVATED)
ASH BASIN
� 'cam ✓ v } ��,
HOLDING BASIN /
LINED RETENTION BASIN
•
•
GYPSUM' COAL PILE MARSHALL
PAD `
NOTES:
1. ALL BOUNDARIES ARE APPROXIMATE.
2.2019 USGS TOPOGRAPHIC MAP, TROUTMAN & LAKE NORMAN NORTH
QUADRANGLE, OBTAINED FROM THE ESRI BASEMAP SERVICE ON
FEBRUARY 3, 2021.
DUKE CATAWBA
ENERGY® COUNTY
CAROLINAS
4'
synTerra
STEAM STATION
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FIGURE 1
SITE LOCATION MAP
DRY ASH LANDFILL
SEMIANNUAL WATER QUALITY MONITORING REPORT
MARSHALL STEAM STATION
TERRELL, NORTH CAROLINA
DRAWN BY. T. KING DATE: 05/15/2019
REVI5ED BY L FOREMAN DATE.-11/29/2023 0 GRAPHIC SCALE
CHECKED BY T COLTON DATE: 11/29/2023 1'000 1'000 2,000
APPROVED BY. T. COLTON DATE: 11/29/2023
PROJECT MANAGER: T. COLTON (IN FEET)

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A
MW-7 (OB-3)
800
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LEGEND
MONITORING WELL
ABANDONED MONITORING WELL
ABANDONED OBSERVATION WELL
ASH BASIN WASTE BOUNDARY
LANDFILL LIMIT OF WASTE
— - — LANDFILL REVIEW BOUNDARY
— - — LANDFILL COMPLIANCE BOUNDARY
DUKE ENERGY CAROLINAS PROPERTY LINE
)o STREAM (MCKIM & CREED 2016)
OB-1 (Dry
-1 WETLAND (MCKIM & CREED 2016)
Ash Landfill)
NOTES:
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IS ENERGY.
CAROLINAS
10
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1. THE STREAMS AND WETLANDS JURISDICTIONAL DETERMINATION WAS APPROVED
BY THE US ARMY CORPS OF ENGINEERS ON OCTOBER 25,2017 (SAW-2015-01412).
WETLANDS AND STREAMS BOUNDARIES WERE OBTAINED FROM AMEC FOSTER
WHEELER ENVIRONMENTAL 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
DEEMED APPROXIMATE.
3. ALL BOUNDARIES ARE APPROXIMATE.
4. AERIAL IMAGERY OBTAINED FROM PROPELLER VIA DUKE ENERGY. IMAGE COLLECTED ON
MAY 8, 2023.
5. DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM FPS 3200 (NAD83.
GRAPHIC SCALE
290 0 290 580
FIGURE 2
SAMPLE LOCATIONS
(IN FEET)
DRY ASH LANDFILL
DRAWN BY. T. KING DATE:11/22/2023
REVISED BY. T. KING DATE: 11/22/2023
SEMIANNUAL WATER QUALITY MONITORING REPORT
CHECKED BY: T. COLTON DATE: 11/22/2023
MARSHALL STEAM STATION
APPROVED BY. T. COLTON DATE: 11/22/2023
PROJECT MANAGER T. COLTON
TERRELL, NORTH CAROLINA

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-- GROUNDWATER ELEVATION CONTOUR (NAVD88)
No GROUNDWATER FLOW DIRECTION
- — - LANDFILL COMPLIANCE BOUNDARY
LANDFILL LIMIT OF WASTE
LANDFILL REVIEW BOUNDARY
ASH BASIN WASTE BOUNDARY
- • DUKE ENERGY CAROLINAS PROPERTY LINE
> STREAM (MCKIM & CREED 2016)
WETLAND (MCKIM & CREED 2016)
TOPOGRAPHIC CONTOUR (10' INTERVAL)
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NOTES
1. THE STREAMS AND WETLANDS JURISDICTIONAL DETERMINATION WAS APPROVED
BY THE US ARMY CORPS OF ENGINEERS ON OCTOBER 25. 2017 (SAW-2015-01412).
WETLANDS AND STREAMS BOUNDARIES WERE OBTAINED FROM AMEC FOSTER
WHEELER ENVIRONMENTAL 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
DEEMED APPROXIMATE.
3. WATER LEVEL DATA COLLECTED FROM MONITORING WELLS FROM OTHER PROGRAMS
INCLUDED PROVIDED BECAUSE WATER LEVELS IN THE VICINITY OF THE DRY ASH
LANDFILL PHASE I ARE INFLUENCED BY THE EXTRACTION SYSTEM AND GROUNDWATER
ELEVATION CONTOURS CANNOT BE RELIABLY SHOWN.
4. ALL BOUNDARIES ARE APPROXIMATE
5. PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY CAROLINAS.
6. GROUNDWATER ELEVATIONS MEASURED ON AUGUST 9, 2023.
7. STP - BELOW THE PUMP
8. 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.
9. DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
COORDINATE SYSTEM RIPS 3200 (NA083).
%DUKE
300 0
300 600
FIGURE 3
ENERGY
GRAPHIC SCALE (IN FEET)
WATER -LEVEL MAP - SURFICIAL FLOW ZONE
CAROLINAS
AUGUST 2023
DRAWN BY E. ORDEMANN
DATE: 04/24/2023
DRY ASH LANDFILL
REVISED BY L FOREMAN
CHECKED BY: TCOLTON
DATE_ 11/29/2023
DATE: 11/29/2023
SEMIANNUAL WATER QUALITY MONITORING REPORT
APPROVED BY T COLTON
DATE 11/29/2023
MARSHALL STEAM STATION
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PROJECT MANAGER TCOLTON
I
TERRELL, NORTH CAROLINA

Semiannual Water Quality Monitoring Report — August 2023 Sampling Event
Marshall 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
Dry
Dry
MW-2
8/15/1989
Surficial
PVC
2
35.61320
-80.96798
37.62
27.62 - 37.62
797.21
795.01
Abandoned
Abandoned
MW-3
8/15/1989
Surficial
PVC
2
35.61914
-80.96723
30.04
20.04 - 30.04
813.07
810.97
806.28
4.69
MW-4
8/15/1989
Surficial
PVC
2
35.62092
-80.97036
52.70
42.70 - 52.70
867.15
864.55
828.78
35.77
MW-5
5/23/2000
Surficial
PVC
2
35.61565
-80.96594
35.0*
18.0 - 28.0 *
822.69
820.19
Abandoned
Abandoned
013-1
6/28/1989
Surficial
PVC
2
35.61005
-80.96105
52.02
57.70 - 67.70
825.85
823.55
Abandoned
Abandoned
OB-Z (MW-6)
12/17/2010
Surficial
PVC
2
35.61682
-80.96956
122.44
107.44 - 122.44
919.65
917.15
Abandoned
Abandoned
013-3^ (MW-7)
12/16/2010
Surficial
PVC
2
35.61722
-80.97044
59.20
1 44.20 - 59.20
1 859.16
856.66
Abandoned
Abandoned
Notes:
Groundwater elevations are based on water level data collected on August 9, 2023.
- Monitoring wells used for water level only.
* MW-5 well and screen depth survey data limited to tenth of a foot.
MW-5 abandoned in December 2020 due to construction of Site water redirect project
OB-1 abandoned in April 2021 due to excavation of Phase 1
MW-2, CB-2 (MW-6), and CB-3 (MW-7) were abandoned during April and May 2023
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 CAROLINAS, 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
µ[)/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 6020E
1
Arsenic
µg/L
EPA 200.8 / SW 6020E
10
Barium
µg/L
EPA 200.7 / SW 6010D
700
Beryllium
µg/L
EPA 200.8 / SW 6020E
4
Boron
µg/L
EPA 200.7 / SW 6010D
700
Cadmium
µg/L
EPA 200.8 / SW 6020E
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 6020E
10
Cobalt
µg/L
EPA 200.8 / SW 6020E
1
Copper
µg/L
EPA 200.8 / SW 6020E
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 6020E
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 6020E
NE
Nickel
µg/L
EPA 200.8 / SW 6020E
100
Nitrate
mg/L
EPA 300.0 / EPA 9056A
10
Selenium
µg/L
EPA 200.8 / SW 6020E
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 6020E
2
Total Dissolved Solids
mg/L
SM 2540C / EPA 160.1 / ASTM D5907
500
Total Hardness
mg/L
Calculation (2.497 (calcium) + 4.118
(magnesium))
NE
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:
1) Constituents analyzed in the WQMP were approved by NCDEQ on March 20, 2023; with the exception of dissolved constituents which are only applicable for surface
water and underdrains which are not applicable for the Dry Ash Landfill No. 1804-INDUS
2) 15A NCAC 02L Standards for Groundwater - North Carolina Class GA Standards found in 15A NCAC 02L .0202 Groundwater Quality Standards (effective April 1, 2022).
3) Total recoverable metal analysis applicable to samples collected from groundwater as it pertains to water quality standards defined in 15A NCAC 02L.
Acronym List:
NCDEQ- North Carolina Department of Environmental Quality
µg/L - micrograms per liter NE - not established
an/cm - micro -ohms per centimeter NTU - nephelometric turbidity units
mg/L - milligrams per liter S.U. - standard units
my - millivolts 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
Media
Monitoring
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. Abandoned during April and May 2023
See Table 1 Well Construction Summary for monitoring well construction
M W-3
information. Monitoring well sidegradient of Dry Ash Landfill Phase II.
See Table 1 Well Construction Summary for monitoring well construction
M W-4
information. Monitoring well upgradient of Dry Ash Landfill Phase II.
Groundwater
See Table 1 Well Construction Summary for monitoring well construction
M W-5
information. Abandoned during December 2020
See Table 1 Well Construction Summary for monitoring well construction
OB-1
information. Abandoned during April 2021
OB-2 (MW-6)
See Table 1 Well Construction Summary for monitoring well construction
information. Abandoned during April and May 2023
OB-3 (MW-7)
See Table 1 Well Construction Summary for monitoring well construction
information. Abandoned during April and May 2023
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)l
(ft)
(ft)
Porosity
(ft/day)
(Ft, NAVD 88)
(Ft, NAVD 88)
MW-4 To MW-3
828.78
806.28
0.50
22.50
1236
0.3
0.03
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 August 9, 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
MDL
15A NCAC 02L
Standard
MW-3
MW-4
pH
320
S.U.
5.0
5.7
6.5-8.5
Temperature
325
Deg C
22.7
26
NE
Specific Conductance
323
µmhos/cm
84
64.3
NE
Dissolved Oxygen
-
mg/L
3.7
1.1
NE
Oxidation Reduction Potential
336
mV
-2.2
-33.1
NE
Eh
-
mV
197.8
166.9
NE
Turbidity
330
NTUs
0.5
5
-
NE
Antimony
13
µg/L
< 1
3.15
0.104
1
Arsenic
14
µg/L
< 1
0.25 J
0.111
10
Barium
15
µg/L
207
61
2
700
Beryllium
23
µg/L
0.517 J
< 1
0.249
4
Boron
428
µg/L
7 J
8 J
5
700
Cadmium
34
µg/L
< 1
0.04 J
0.032
2
Calcium
375
mg/L
0.496
4.34
0.012
NE
Chloride
301
mg/L
8.4
2.6
0.0154
250
Chromium
51
µg/L
0.826 J
0.552 J
1
10
Cobalt
53
µg/L
7.69
1.21
0.077
1
Copper
54
µg/L
< 1
2.88
1
1,000
Fluoride
312
mg/L
< 0.1
0.06 J
0.0479
2
Iron
340
µg/L
81
404
4
300
Lead
131
µg/L
< 1
0.147J
0.037
15
Lithium
-
µg/L
< 5
< 5
2
NE
Magnesium
376
mg/L
2.92
0.900
0.008
NE
Manganese
342
µg/L
37
157
1
50
Mercury
132
µg/L
< 0.05
< 0.05
0.01
1
Molybdenum
397
µg/L
< 1
0.265 J
0.18
NE
Nickel
152
µg/L
1.27
1.59
1
100
Nitrate (as N)
303
mg-N/L
4.0
0.02 J
0.002
10
Selenium
183
µg/L
< 1
< 1
0.193
20
Silver
184
µg/L
< 1
< 1
0.035
20
Sulfate
315
mg/L
0.06 J
0.62
0.0428
250
Thallium
194
µg/L
< 0.2
< 0.2
0.041
2
Total Dissolved Solids
311
mg/L
49.0
52.0
25
500
Vanadium
209
µg/L
< 0.3
1.08
0.114
7
Zinc
213
/L
10
11
4
1000
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 10/17/2023.
Samples collected by Pace personnel on August 9, 2023.
A blank cell means there is no relevant information.
<- Concentration not detected at or above the adjusted reporting limit.
µg/L - micrograms per liter
µmhos/cm - micromhos per centimeter
Deg C - degrees Celsius
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
mV - Millivolts
NCAC - North Carolina Administrative Code
NE - Not Established
NTUs - Nephelometric Turbidity Units
S.U. -Standard Units
SWS ID - Solid Waste Section Identification Number
Page 1 of 1

TABLE 6
FIELD AND ANALYTICAL RESULTS THAT EQUAL OR GREATER
THAN 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-3
5
4.4 - 5.4
range of historical readings
at MW-3.
pH
S. U.
6.5-8.5
pH is consistent with the
MW-4
5.7
5.0 - 6.3
range of historical readings
at MW-4.
Antimony is consistent with the
Antimony
MW-4
3.15
µg/L
1
<0.5 - 3.7
range of historical
concentrations at MW-4.
Cobalt is consistent with the
MW-3
7.69
7.1 - 8.9
range of historical
concentrations at MW-3.
Cobalt
µg/L
1
Cobalt is marginally greater
MW-4
1.21
<1.0
than historical concentrations
at MW-4.
Iron is consistent with the
Iron
MW-4
404
µg/L
300
12.2 - 2,600
range of historical
concentrations at MW-4.
Manganese is consistent with
Manganese
MW-4
157
µg/L
50
0.97 - 158
the range of historical
concentrations at MW-4.
Prepared by: GTC Checked by: TWL
Notes:
Historical ranges are based on data from the monitoring events that occurred between August 1989 and February 2023.
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 10/17/2023.
<- Concentration not detected at or greater than the adjusted reporting limit.
µg/L- micrograms per liter
S.U. - Standard Units
Page 1 of 1

Semiannual Water Quality Monitoring Report — August 2023 Sampling Event
Marshall Steam Station — Dry Ash Landfill (Permit No. 1804-INDUS)
Terrell, North Carolina
APPENDIX A
FIELD SAMPLING FORMS
L7
synTerra
Science & Engineering Consultants

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Dmmwnt Naiiw Field data Sheet
Dale Issued, Marc g, 2019.
Pa e: 1 of
r?C9Ath7Jy!/C81
TJacunient Number. P-CAR-f�).1)-009-xev 03
Issuing Authority: Pace Huntersville Quality
,,.,,.
Office
Field Data Sheet
Client:
_Location:.C24Qre-\x 1(p /J(- Project #: Ls-, DR AL. F
Name and Affiliation (Sampler(s):
Ct c..c
_ �M
Name and Affiliation (Inspector):
NI fi
=Date:
Information
B :a)Well
y Ail%
Well ID: _ M ' i
Well Locked: / NO /,Flushmount )
Well Diameter: D
Construction: ('U /Steel/StalnlessSteel)
Total Well Depth: �`� h
Multi Factor•:_�i_l_fa I"(Radius/12)2x 3,14 x 7.481
Static Water Level: Dye It
Casing Volume: gallons
Height of Water Column: ft
CaL 3 Volumes: gallons
Pump Intake: It
Purge Information
Date Purged-.— _Start:_
.Finish: _ Purge Rate, —
Purging Method: —
Total Volume Purged: (gallons/mis/L)
Sampling Information
Date Collected: 6'" ` /=/
Time Collected;: (am/pm)
Sampling: Equipment Used:
InstrumentID:
Bottle Type
Preservation Analysis Required
------------------
Field Measurements/Observations
Sam emp(°C): -Time:-Turbidity (ntd): Time.
Diss Oxy (mg/L):
Fe 2+ une:
Specific Coed. {u6): _
Res. Cl (mgTif(Ixg/ Time.
Sample pH (sm. • _ � Time: _ Odor: Time:
R zMV): Tune: Appearance: Time:
ReDox (EH value):YSi ProPlus +200jnV _ Other: Time:
General/Weather Observations:
( un l /cloudy/rainy) Ternp.;75 4 (°P) Wind__Lj_(mph)
Sampler Signature: Date: Co I �i
Stabilization Test
PROM

PmumGtt Name: Field data Sheet
Date Issued: March 9, 2019
Page: I i
,, e1C6l11k71j9IGR1
of
TJceument Numhe , F-CAR-FJD-001-rev.e3
Issuing Authority: Pace:.HuntersvilleQuality
,.
t
office
Field Data Sheet
Client; DL,�Ct �c\eCiiy Location;MO..O c�vr11P UC Project* M55 17R/iU nab xP/"j
Name and Affiliation (Sar upler(s); -:Suz- - �14L'= Field Data Sheet Review: N� 1
Name and Affiliation (Inspector): r_ 31 Date:/I O `23 B : I
Well Information 1 it � Y
Well ID: M W -'� Well Locked: (LI 6)/ NO / Flushmount )
Well Diameter: Construction: CV/steel/stainless Steel)
Total Well Depth:-)9,HC1 ft Multi Factor*c r(Radius/12)2x3.14x7.981
Static Water Level;' '•-�� ft Casing Volume: 3,5a gallons
Height of Water Colmnn:2-1_�ft Cal, 3 Volumes: &S-L gallons
Pump Intake: �j (o ,QQ It
Purge Information
Date Purged: 0$ 104 J 3 Start: 1 6 .Finish:PurgeRate
Purging Method: 'hIdJd-eC�Total Volume Purged: '40 0_(gallons/A @syL)
Samphim Information
DateCollected:Cs- /gA/3 Time Collected: (amf m)
Sampling Equipment Used: B(A !i d R/ ��"I� InstrumenE ID; V SS D can < tSfF�M c troi � ?#30�1
Bottle Type Preservation Analysis Required
Field Measurement.WObservations
Sample Temp, (°C}: a�� Timej-a-LQ :Turbidity(ntu): 'rime: Aa3Q
DissOxy(mg/L); ,3 Time:.Fe2+mg/L: ND Time: 1 a3Q
Specific Cond. (uS); 19LI.Q_Time: V;)-73 C Res. Cl (rng/L)/(µg/L): Time: _--
Sample PH (s.u.): S O Time: i �J Odor:_ l� Time:
ReDox (mV): a Time: 1 0 Appearance: Cl rr.,C Time: i a 3 Q
ReDox (EH value):YSI ProPlus +200mV 1 °lam --S Other: — Time:
mnlar AianaFnrw O- i
Stabilization Test
�-/ —
Time
Purged
-
Temp.
°
(C)
Diss Oxy:<
{mg/L)
Spec.
Cond.'
{)
pl-i (s.u.);
ReDox
(mV)
Turbidity
(ntu)
Vo time
removed
(gallons/ is
L
Wafer
level (ft)
Other
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Document Name. Field data Sheet
Date IssuedWarch 8, 2019'
Page..1
eAtk7tytiCA1
Document Number F-CAR-EI.D-001-rev.0%
Issuing Authority: Pace Huntersvitle Quality
t
...Office:
6Field Data Sheet
Location. 4Vtlr�
Client: J��t C% �Pr
(�ClojeC�ct#'1�1��_.�SVj
_ d {1 J
{ p () Name and Affiliation Sam ler s�J C UField Data Sheet Review:
Name and Affiliation (Inspector): a V /� B
Date: Y iJ
Well Information
Well ID: M Ui ` % Well Locked; (YES J O Flushmnunt)-0QAAr trSj5Qr V n Lve l t
�t t
Well Diameter: Construction: Steer/Stainless Steel)
Total Well Depths ®` 0 ft MuIti Factor*:0' k (P3 [*(Radius/12)2 x 3,14 x 7481
Static Water Level: 38 • 31 ft Casing Volume: `; 3G gallons
Height of Water Column: l . 3 ff Cal. 3 Volumes: 5 ' 1 I gallons
Pump Intake: -1 8 + 1 ^ It
Put e I ion
Date Purged. -a-/ QfD3 Start : , _ d Finish: ` 0 Purge Rate:� �t
tJ
Purging'Method:D(. Wid (A Rf Total Volume Purged: `- 07 (gallons t�/L)
Sampling Information
Date Collected: 8 1 /2.- Time Collected: (am m
Sampling Equipment Used:Dm.T�UdrAz Instrument ID: ) —11W4_qD
Bottle Type Preservation Analysis Required
Me �
Field Measurement$%servationa
Sample Temp (1q: ) Time:Turbidity (ntu): Timer J
DissOxy(mg/L): l.) TinAa-�S( Fe2+mg/ L: N� Tlme:�a`Cs
Specific Cond. (us): U 4.3 Tnne:1_q�-b( Res. Cl Cone:
Sample pH (s,u,): 6--1 ___ Time: t al`},1� Odor:_"`'v(�U` .: Tune• 1 �{ l� _
ReDox(mV): -21-S, ) Time. -1 Appearance:C[Q-c✓� Time:1 -'44-S
ReDox (EH value):XSIProPlus:+204mV 1((t._(Q_q__Other: Time:
General/WeatherObservations: WaSS 1^ (c 5i
^7 sunn /cloud(y/rfatny) TemJ p. ff) Wind (mph)
Sampler Signature: I I )OaQQ_Datel! e[ 123
Stabilization Test
Spec.
Volume
Time
Temp.
Diss Oxy.
Card:
pH (s.u.)
ReDox
Turbidity
remove
Water
OtherPurged
(C)
(mg/I)
(nni
(mV)
(ntu)
{gallons/1 /
Level (ft)
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9
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Dc,cament Name:
Field Data Sheet
Document Issued: March 8, 2019
Pag@'W
Document Number:
Issueinh Authority:
F-CAR FLD ORl.revit3
Pace HuntersviGe Quality Office
Client:
Location: ^pjY .si f S �i��� n1 V C
Project: iY1L�i6 ��tcSL U¢CME}�t¢)n(
Well ID: ''1 // a
Reviewed Date and By: NO
Stabilization Test'
lVeD Diameter
Mu16plicationFactoe
1
O.Ws
1.2
0.0918
1.625
01080
2
0.1630
3
0,3670
4
0.6530
6
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� .
Document Name: Field data Sheet
Date Issued;,Mard'IS, 2019'
Page:1of 1
BA/k7lytiCR!
I7ocumeuk Number. F-CAR-FI.I3-0OYrev.03
Issuing Authority: Pace Huntersville Quality
k
Office
e¢Field Data Sheet
Client: \ ���AtC� Location:,) I� S T 1NCProject#: �55.�� �
i1sh �efwt+ tpi"
Name and Affiliation (Sampler(sJ
Field Data Sheet Review;
Name and Affiliation (Inspector):
Date:`6JA��j By:
W
Well Information
Well ID: �-
Locked: (YES J NO j Flushmount)
WA�ameter:
Constru ' n: (PVC/Steel/Stainless Steel)
To. it
Multi Factor*` r(Radius/1272 x 3.14 x 7.481
Static Water Level., A
Casing Volume. gallons
Height of Water Column:
Cal. 3 Volumes: alIons
Pump Intake:
Purge Information
Start: Flnish: Purge Rate
Purging Method:
Total Volume Purged: g
Samoin¢Information
Date Collected._ 'L_/-'1/A3__,
+ 11
Time Collected: L �I (am/ m)
Sampling Equipment Used:
Pf Instrument ID:
rl(�)0
Battle Type
Preservation Analysis Required ^
Field Measurements Observations
Sample Temp (t. Thne:—_--
-.__Turbidity (ntu): Time:
Diss Oxy(mg/L): Time
Fe 2+ mg/L Time:
SpecificCond. (uS): Time:
Res. ZWilg/L): Time;
Sample pH (s.u.): ------,Time:
—Odor:—.--.-.--, _._ Time.
-_ —
ReDox (mV): Time
Appearance:
ReDox (EH value):YSI. ProPlus +200mV
Other: Timee.
General/WeatherObservations: COkP_ctec'4
)­iW
su /clouuddy/rainy) Temp. (7) Windy
h)
—t t-^
Sampler Signature:t �-t � D Date:;
Stabilization
Test
Time
Purged
o
(C)
Diss Oxy.
(mg
Spec.
Cond.
pH (s.u.)
ReDox
(mV)
Turbidity
(rim)
o urne
removed
(gallons/mis/
Z
Water
level (ft)
Omer

*1CD/1rkflyUc.'+1
� �
Dmument Names field data Sheet
-Date Issued: March 9, 2019'.
]'age: 1 of -A
Document Number, P-CAR-PI.17A01-rev.g3
Wuh� Authority: PaceHunteravillo ualit
g Y'.Office Q Y
FieldDataSheet
`, -
Client:- �x (�e re Location:
G Project #: M S5 t7PN 'F jkM j
Name and Affiliation (Sampler(s): =
i CR
Field Data Sheet Review:
Name and Affiliation (Inspector). N 1
Well Information
Date: B/ (li 'La By.
Well ID: M $ S E Q
us Fro nt )
Well Diameter:
Construction: (PVC/.Steel/Stainless Steel)
Total Well Depth: it
Multi Factor*: [*(Radius/12)2x 3.14x 2.48)
Static Water Level: ': ` ft
Casing Volume: gallons
Height of Water Coluum:_ `` ft
Cal. 3 Volumes: — gallons
Pump Intake- ft
Purge Information
Date Purged:/ - /— — Start:
. Finish:purge Rater
Purging Method:
Total Volume Purged: (gallons/mis/L)
Sampling Information
Date
Time Collected: (� (axnJ tx1
Sampling; Equipment Used: (S� t c.10 -
Instrument ID:
Bottle Type
Preservation Analysis Re uirect
Field MeasurementWQbservations
SaQple Temp (0C):. Time:
Turbidity (mu): Time:
Diss Oxy (mg/L):
Fe 2+ mg/L: Time:
Specific Cond. (uS)i Time:
Res. C ni
Sample pH (s.u.): T'
Odor:
ReDox (mV): Time:
Appearance: Timer
R value):YSI ProPlus +200mV
=Others Time:
General/WeatherObservationsi E9 s-r,nc)UA
c'k- M/W -3.
su /cloudy/rainy) Temp.. �" ((°i) Wind (mph)
8ampierSi,nature:
Date:
Stabilization Test
Time
Purged,
n
(C)
' Ox .
(mg/L)
Spec.
ond:;
()
pIi {s.u.}
ReDox
(mV)
Turbidity
(ntu)
Volume
removed
(gallons/mis/
Water
IevE
O

I?ocument Names Rieltl data Sheet
Date Issued: Match 8, 2014.
race MN) NCal'
],age: I of
l�cxument Number, F-CAR-RL17.001-rev.03
Issuing Authority: Pace £tuntersville Quality
.Office
P)
Field Data Sheet
1!_
Client: t c (l.ecz Location:,()eQo is U' Ne
Project#:MS5 7R&tom t rvtcF�cMo�"g
Name and Affiliation (Sampler(s): uz
Field Data Sheet Review:
Name and Affiliation (inspector): rNI Fj
p 0/23 r_ H/n
Well Information
Date:
B
1h0 la Y g
rrrzrz
Well ID: m S S. _ r LJ
Well I orkp& YES NO-
Fhrahmawnt )
,(
Well Diameter: _
Con t��/Gwinl
ss Steel)
Total Well Depth, ft
Multi Factor"c — [«(R4ditis/I2)2x
3.14-x 7,48]
Static Water Level:___`— ft
Casing Volume:
gallons'
Height of Water Colurnrcv ` ft
Cal. 3 Volumes:
gallons
Pump Intake:
ft
Purge Information
Date Purged:—/ — /_ — Start :
Finish: —
Purge Rake:
Purging Method-
Total Volume Purged:
(gallons/mis/L)
Sampling Information
Date Collected:_n% _0_5_/_13__
Time Collected:
(am/pm)
Gv ��
Sampling Equipment Used:
Instrument ID:
Bottle Type
Preservation
Analysis Required
Field Measurements/Observations
Sample Temp (04 'Time:
Turbidity (ntu):
'Time:
Diss Oxy (mg Thee: :
Fe 2+ mg/L:
Time:
Specific Cond. (uS): Time: '
L): Time:
Sample pH (sat.): __ me:
Odor:
R�en Tune:
Appearance:
Time:
eR Dox (BI i value):YSI ProPlus +200mV
Other:
Time:
General/WeatherObservationst i'(3 5eMeW
C'f M1n, .-3
,
( tnn /cloudY /rainY Tern t on WiraiLf tM III)
• P
)ler Signature: ^Date: Oyhn � y-t
lization Test
I MI
®E.
e
.
®—.
..
-Anow

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

Analytical Data Review Checklist - Aqueous
Facility/Site
"ararn Station
State
NC
Location/Sample IDs
MW-3, MW-4
Duke Central Lab
Lab Report r Sample Date Sample Receipt Date Analysis Complete Date 7Groundwater
❑ Water
/23070242 8/9/2023 8/10/2023 8/25/2023
❑ Other
References: 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)
Sample Receipt and Chain of Custody
®®
❑� ❑ 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?
❑�
❑
❑
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
❑
❑
❑�
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
❑
15) 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
❑
❑
0
7c) Sulfide: Analyzed within 7 days of collection
0
❑
❑
7d) TOC and/or Nitrate -Nitrite: Analyzed Within 28 days of collection
❑
❑
0
7e) Total Phosphorus (TP) and Dissolved TP: Analyzed within 28 days of collection
❑
❑
0
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
❑
❑
❑
❑
[21
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
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?
❑
❑
❑�
❑
❑
j]
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)?
1 Do) If YES, was the parameter recovery less than 50 percent or greater than 150 percent?
❑
❑
2
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:
❑�
❑
❑
11 a) 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
❑v ❑ ❑ 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?
❑ ❑� ❑ 13) Field Duplicate Sample - Is the relative percent difference between the parent and field duplicate sample results greater than 35 percent?
❑ ❑ 14) Field/Equipment/Trip Blanks - Were any parameters detected in the associated field, equipment, and/or trip blanks?
❑ ❑ 14a) If yes, were any target analytes detected in the samples at a concentration less than ten times the Field/Equipment/T(p Blank concentration?
❑v
❑ ❑ 15) Were initial and continuing calibration blank information within acceptable criteria per the lab report?
❑
❑� ❑ 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 Carrier7 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
M - MS and/or MSD recovery was outside of the control limits; the associated LCS recovery was acceptable. (This qualifier is for a non -project QC sample.)
M4 -The spike recovery value was unusable since the analyte concentration in the sample was disproportionate to the spike level. (This qualifier is for a non -project QC sample.)
U-Analyte was analyzed for, but not detected above the MDL, MDA, MDC, or LOD.
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 lox the blank concentration.
• Per the Chain of Custody, MW-1 was not sampled because it was dry.
• Chloride (0.02 mg/L), Nitrate (0.03 mg/L), Nitrate as N (0.01 mg-N/L), Chromium (0.43 ug/L), and Molybdenum (0.59 ug/L) were detected in the Equipment Blank; Nitrate, Nitrate as N,
Chromium, and Molybdenum were also detected in the samples at concentrations less than lox the blank concentrations.
• Chloride (0.02 mg/L), Nitrate (0.03 mg/L), and Nitrate as N (0.01 mg-N/L) were detected in the Field Blank; Nitrate and Nitrate as N were also detected in the samples at concentrations less
than lox the blank concentrations.
Review Determination: ❑ Usable 0 Usable with Required Actions ❑ Unusable
Signatures: Date:
Data Quality Reviewer REB 10/16/2023
Technical Lead GTC 12/1/2023

DUKE Analytical Laboratory
ENERGY
13339 Hagers Ferry Road
Huntersville, NC 28078-7929
McGuire Nuclear Complex - MG03A2
Phone:[phone] Fax:[phone]
Order Summary Report
Order Number: J23070242
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: Date: 8/25/2023
(Signature)
P y endall
Program Comments:
Please contact the Program Manager (Peggy Kendall) with any questions regarding this report.
Data Flags & Calculations:
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
Collection
Date and Time
Collected By
Sample Description
2023016855
MARSHALL
09-Aug-23 12:30 PM
Pace
MSS_MW-3
2023016856
MARSHALL
09-Aug-23 12:45 PM
Pace
MSS_MW-4
2023016857
MARSHALL
09-Aug-23
Pace
MSS_FD-20230809-2
2023016858
MARSHALL
09-Aug-23 12:45 PM
Pace
MSS_EB-20230809-1245
2023016859
MARSHALL
09-Aug-23 12:35 PM
Pace
MSS_FB-20230809-1235
5 Total Samples

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 0 No
All laboratory QA/QC requirements are acceptable.❑ Yes ❑ No
Report Sections Included:
❑� Job Summary Report
❑d Sample Identification
❑� Technical Validation of Data Package
❑� Analytical Laboratory Certificate of Analysis
❑d Analytical Laboratory QC Report
❑ Sub -contracted Laboratory Results
❑ Customer Specific Data Sheets, Reports, & Documentation
❑ Customer Database Entries
❑d Chain of Custody
❑d Electronic Data Deliverable (EDD) Sent Separately
Reviewed By: Peggy Kendall Date: 8/25/2023

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Site: MSS MW-3 Sample #: 2023016855
Collection Date: 08/09/2023 12:30 PM Loc code: MSS MW-3 Matrix: GW RCRA
Analyte Result Units Qualifiers RDL MDL DF
INORGANIC IONS BY IC - Q23080190
Chloride
8.4
mg/L
Fluoride
0.0479 U
mg/L
Nitrate
18
mg/L
Nitrate as N
4.0
mg-N/L
Sulfate
0.06 J
mg/L
MERCURY (COLD VAPOR) IN WATER - 023080211
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q23080242
Barium (Ba)
0.207
mg/L
Boron (B)
0.007 J
mg/L
Calcium (Ca)
0.496
mg/L
Iron (Fe)
0.008 J
mg/L
Lithium (Li)
0.002 U
mg/L
Magnesium (Mg)
2.92
mg/L
Manganese (Mn)
0.037
mg/L
Zinc (Zn)
0.010
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS
- Q23080246
Antimony (Sb)
0.104 U
ug/L
Arsenic (As)
0.111 U
ug/L
Beryllium (Be)
0.517 J
ug/L
Cadmium (Cd)
0.032 U
ug/L
Chromium (Cr)
0.826 J
ug/L
Cobalt (Co)
7.69
ug/L
Copper (Cu)
0.787 U
ug/L
Lead (Pb)
0.037 U
ug/L
Molybdenum (Mo)
0.18 U
ug/L
Nickel (Ni)
1.27
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
- Q23080193
TDS 49.0 mg/L
Method Analysis Date/Time Analyst
0.5
0.0154
5
EPA 9056A
08/10/2023 10:31
BGN9034
0.1
0.0479
1
EPA 9056A
08/10/2023 10:31
BGN9034
0.5
0.0209
5
EPA 9056A
08/10/2023 10:31
BGN9034
0.115
0.002
5
EPA 9056A
08/10/2023 10:31
BGN9034
0.1
0.0428
1
EPA 9056A
08/10/2023 10:31
BGN9034
0.05
0.01
1
EPA 7470A
08/11/2023 12:52
CELL106
0.005
0.002
1
SW 601OD
08/15/2023 17:37
CELL106
0.05
0.005
1
SW 601OD
08/15/2023 17:37
CELL106
0.05
0.012
1
SW 601OD
08/15/2023 17:37
CELL106
0.01
0.004
1
SW 601OD
08/15/2023 17:37
CELL106
0.005
0.002
1
SW 601OD
08/15/2023 17:37
CELL106
0.02
0.008
1
SW 601OD
08/15/2023 17:37
CELL106
0.005
0.001
1
SW 601OD
08/15/2023 17:37
CELL106
0.005
0.004
1
SW 601OD
08/15/2023 17:37
CELL106
1
0.104
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.111
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.249
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.032
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.185
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.077
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.787
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.037
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.18
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.256
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.193
1
SW 6020B
08/15/2023 19:35
MHALL3
1
0.035
1
SW 6020B
08/15/2023 19:35
MHALL3
0.2
0.041
1
SW 6020B
08/15/2023 19:35
MHALL3
0.3
0.114
1
SW 6020B
08/15/2023 19:35
MHALL3
25
25
1
SM2540C
08/10/2023 09:33
SNEGLIA

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Site: MSS MW-4 Sample #: 2023016856
Collection Date: 08/09/2023 12:45 PM Loc code: MSS MW-4 Matrix: GW RCRA
Analyte Result Units Qualifiers RDL MDL DF
INORGANIC IONS BY IC - Q23080190
Chloride
2.6
mg/L
Fluoride
0.06 J
mg/L
Nitrate
0.08 J
mg/L
Nitrate as N
0.02 J
mg-N/L
Sulfate
0.62
mg/L
MERCURY (COLD VAPOR) IN WATER - 023080211
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q23080242
Barium (Ba)
0.061
mg/L
Boron (B)
0.008 J
mg/L
Calcium (Ca)
4.34
mg/L
Iron (Fe)
0.404
mg/L
Lithium (Li)
0.002 U
mg/L
Magnesium (Mg)
0.900
mg/L
Manganese (Mn)
0.157
mg/L
Zinc (Zn)
0.011
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS
- Q23080246
Antimony (Sb)
3.15
ug/L
Arsenic (As)
0.25 J
ug/L
Beryllium (Be)
0.249 U
ug/L
Cadmium (Cd)
0.04 J
ug/L
Chromium (Cr)
0.552 J
ug/L
Cobalt (Co)
1.21
ug/L
Copper (Cu)
2.88
ug/L
Lead (Pb)
0.147 J
ug/L
Molybdenum (Mo)
0.265 J
ug/L
Nickel (Ni)
1.59
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
1.08
ug/L
TOTAL DISSOLVED SOLIDS
- Q23080193
TDS 52.0 mg/L
Method Analysis Date/Time Analyst
0.1
0.0154
1
EPA 9056A
08/10/2023 09:32
BGN9034
0.1
0.0479
1
EPA 9056A
08/10/2023 09:32
BGN9034
0.1
0.0209
1
EPA 9056A
08/10/2023 09:32
BGN9034
0.023
0.002
1
EPA 9056A
08/10/2023 09:32
BGN9034
0.1
0.0428
1
EPA 9056A
08/10/2023 09:32
BGN9034
0.05
0.01
1
EPA 7470A
08/11/2023 12:59
CELL106
0.005
0.002
1
SW 601OD
08/15/2023 17:42
CELL106
0.05
0.005
1
SW 601OD
08/15/2023 17:42
CELL106
0.05
0.012
1
SW 601OD
08/15/2023 17:42
CELL106
0.01
0.004
1
SW 601OD
08/15/2023 17:42
CELL106
0.005
0.002
1
SW 601OD
08/15/2023 17:42
CELL106
0.02
0.008
1
SW 601OD
08/15/2023 17:42
CELL106
0.005
0.001
1
SW 601OD
08/15/2023 17:42
CELL106
0.005
0.004
1
SW 601OD
08/15/2023 17:42
CELL106
1
0.104
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.111
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.249
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.032
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.185
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.077
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.787
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.037
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.18
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.256
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.193
1
SW 6020B
08/15/2023 19:43
MHALL3
1
0.035
1
SW 6020B
08/15/2023 19:43
MHALL3
0.2
0.041
1
SW 6020B
08/15/2023 19:43
MHALL3
0.3
0.114
1
SW 6020B
08/15/2023 19:43
MHALL3
25
25
1
SM2540C
08/10/2023 09:33
SNEGLIA

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Site: MSS_FD-20230809-2 Duplicate Sample #: 2023016857
Collection Date: 08/09/2023 Loc code: MSS FD Matrix: GW RCRA
Analyte Result Units Qualifiers RDL MDL DF
INORGANIC IONS BY IC - Q23080190
Chloride
2.6
mg/L
Fluoride
0.05 J
mg/L
Nitrate
0.10
mg/L
Nitrate as N
0.02
mg-N/L
Sulfate
0.63
mg/L
MERCURY (COLD VAPOR) IN WATER - 023080211
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q23080242
Barium (Ba)
0.061
mg/L
Boron (B)
0.007 J
mg/L
Calcium (Ca)
4.28
mg/L
Iron (Fe)
0.419
mg/L
Lithium (Li)
0.002 U
mg/L
Magnesium (Mg)
0.887
mg/L
Manganese (Mn)
0.162
mg/L
Zinc (Zn)
0.011
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS
- Q23080246
Antimony (Sb)
3.17
ug/L
Arsenic (As)
0.266 J
ug/L
Beryllium (Be)
0.249 U
ug/L
Cadmium (Cd)
0.04 J
ug/L
Chromium (Cr)
0.599 J
ug/L
Cobalt (Co)
1.25
ug/L
Copper (Cu)
3.09
ug/L
Lead (Pb)
0.152 J
ug/L
Molybdenum (Mo)
0.299 J
ug/L
Nickel (Ni)
1.68
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
1.09
ug/L
TOTAL DISSOLVED SOLIDS
- Q23080193
TDS 52.0 mg/L
Method Analysis Date/Time Analyst
0.1
0.0154
1
EPA 9056A
08/10/2023 10:11
BGN9034
0.1
0.0479
1
EPA 9056A
08/10/2023 10:11
BGN9034
0.1
0.0209
1
EPA 9056A
08/10/2023 10:11
BGN9034
0.023
0.002
1
EPA 9056A
08/10/2023 10:11
BGN9034
0.1
0.0428
1
EPA 9056A
08/10/2023 10:11
BGN9034
0.05
0.01
1
EPA 7470A
08/11/2023 13:01
CELL106
0.005
0.002
1
SW 601OD
08/15/2023 17:48
CELL106
0.05
0.005
1
SW 601OD
08/15/2023 17:48
CELL106
0.05
0.012
1
SW 601OD
08/15/2023 17:48
CELL106
0.01
0.004
1
SW 601OD
08/15/2023 17:48
CELL106
0.005
0.002
1
SW 601OD
08/15/2023 17:48
CELL106
0.02
0.008
1
SW 601OD
08/15/2023 17:48
CELL106
0.005
0.001
1
SW 601OD
08/15/2023 17:48
CELL106
0.005
0.004
1
SW 601OD
08/15/2023 17:48
CELL106
1
0.104
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.111
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.249
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.032
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.185
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.077
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.787
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.037
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.18
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.256
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.193
1
SW 6020B
08/15/2023 20:17
MHALL3
1
0.035
1
SW 6020B
08/15/2023 20:17
MHALL3
0.2
0.041
1
SW 6020B
08/15/2023 20:17
MHALL3
0.3
0.114
1
SW 6020B
08/15/2023 20:17
MHALL3
25
25
1
SM2540C
08/10/2023 09:34
SNEGLIA

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Site: MSS_EB-20230809-1245
Equipment Blank
Sample #:
2023016858
Collection Date: 08/09/2023 12:45 PM
Loc code: MSS EB
Matrix:
GW RCRA
Analyte Result Units Qualifiers RDL MDL DF
INORGANIC IONS BY IC - Q23080190
Chloride
0.02 J
mg/L
Fluoride
0.0479 U
mg/L
Nitrate
0.03 J
mg/L
Nitrate as N
0.01 J
mg-N/L
Sulfate
0.0428 U
mg/L
MERCURY (COLD VAPOR) IN WATER - 023080211
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q23080242
Barium (Ba)
0.002 U
mg/L
Boron (B)
0.005 U
mg/L
Calcium (Ca)
0.012 U
mg/L
Iron (Fe)
0.004 U
mg/L
Lithium (Li)
0.002 U
mg/L
Magnesium (Mg)
0.008 U
mg/L
Manganese (Mn)
0.001 U
mg/L
Zinc (Zn)
0.004 U
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS
- Q23080246
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
Chromium (Cr)
0.43 J
ug/L
Cobalt (Co)
0.077 U
ug/L
Copper (Cu)
0.787 U
ug/L
Lead (Pb)
0.037 U
ug/L
Molybdenum (Mo)
0.59 J
ug/L
Nickel (Ni)
0.256 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
- Q23080193
TDS 25 U mg/L
Method Analysis Date/Time Analyst
0.1
0.0154
1
EPA 9056A
08/10/2023 08:14
BGN9034
0.1
0.0479
1
EPA 9056A
08/10/2023 08:14
BGN9034
0.1
0.0209
1
EPA 9056A
08/10/2023 08:14
BGN9034
0.023
0.002
1
EPA 9056A
08/10/2023 08:14
BGN9034
0.1
0.0428
1
EPA 9056A
08/10/2023 08:14
BGN9034
0.05
0.01
1
EPA 7470A
08/11/2023 13:03
CELL106
0.005
0.002
1
SW 601OD
08/15/2023 17:53
CELL106
0.05
0.005
1
SW 601OD
08/15/2023 17:53
CELL106
0.05
0.012
1
SW 601OD
08/15/2023 17:53
CELL106
0.01
0.004
1
SW 601OD
08/15/2023 17:53
CELL106
0.005
0.002
1
SW 601OD
08/15/2023 17:53
CELL106
0.02
0.008
1
SW 601OD
08/15/2023 17:53
CELL106
0.005
0.001
1
SW 601OD
08/15/2023 17:53
CELL106
0.005
0.004
1
SW 601OD
08/15/2023 17:53
CELL106
1
0.104
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.111
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.249
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.032
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.185
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.077
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.787
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.037
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.18
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.256
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.193
1
SW 6020B
08/15/2023 20:25
MHALL3
1
0.035
1
SW 6020B
08/15/2023 20:25
MHALL3
0.2
0.041
1
SW 6020B
08/15/2023 20:25
MHALL3
0.3
0.114
1
SW 6020B
08/15/2023 20:25
MHALL3
25
25
1
SM2540C
08/10/2023 09:34
SNEGLIA

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Site: MSS FB-20230809-1235 Field Blank Sample #: 2023016859
Collection Date: 08/09/2023 12:35 PM Loc code: MSS QA Matrix: GW RCRA
Analyte Result Units Qualifiers RDL MDL DF
INORGANIC IONS BY IC - Q23080190
Chloride
0.02 J
mg/L
Fluoride
0.0479 U
mg/L
Nitrate
0.03 J
mg/L
Nitrate as N
0.01 J
mg-N/L
Sulfate
0.0428 U
mg/L
MERCURY (COLD VAPOR) IN WATER - 023080211
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q23080242
Barium (Ba)
0.002 U
mg/L
Boron (B)
0.005 U
mg/L
Calcium (Ca)
0.012 U
mg/L
Iron (Fe)
0.004 U
mg/L
Lithium (Li)
0.002 U
mg/L
Magnesium (Mg)
0.008 U
mg/L
Manganese (Mn)
0.001 U
mg/L
Zinc (Zn)
0.004 U
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS - Q23080246
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
Chromium (Cr)
0.185 U
ug/L
Cobalt (Co)
0.077 U
ug/L
Copper (Cu)
0.787 U
ug/L
Lead (Pb)
0.037 U
ug/L
Molybdenum (Mo)
0.18 U
ug/L
Nickel (Ni)
0.256 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
Method Analysis Date/Time Analyst
0.1
0.0154
1
EPA 9056A
08/10/2023 07:54
BGN9034
0.1
0.0479
1
EPA 9056A
08/10/2023 07:54
BGN9034
0.1
0.0209
1
EPA 9056A
08/10/2023 07:54
BGN9034
0.023
0.002
1
EPA 9056A
08/10/2023 07:54
BGN9034
0.1
0.0428
1
EPA 9056A
08/10/2023 07:54
BGN9034
0.05
0.01
1
EPA 7470A
08/11/2023 13:06
CELL106
0.005
0.002
1
SW 6010D
08/15/2023 17:58
CELL106
0.05
0.005
1
SW 6010D
08/15/2023 17:58
CELL106
0.05
0.012
1
SW 6010D
08/15/2023 17:58
CELL106
0.01
0.004
1
SW 6010D
08/15/2023 17:58
CELL106
0.005
0.002
1
SW 6010D
08/15/2023 17:58
CELL106
0.02
0.008
1
SW 6010D
08/15/2023 17:58
CELL106
0.005
0.001
1
SW 6010D
08/15/2023 17:58
CELL106
0.005
0.004
1
SW 6010D
08/15/2023 17:58
CELL106
1
0.104
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.111
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.249
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.032
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.185
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.077
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.787
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.037
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.18
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.256
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.193
1
SW 6020B
08/15/2023 20:34
MHALL3
1
0.035
1
SW 6020B
08/15/2023 20:34
MHALL3
0.2
0.041
1
SW 6020B
08/15/2023 20:34
MHALL3
0.3
0.114
1
SW 6020B
08/15/2023 20:34
MHALL3
Qualifiers:
J Analyte detected above the MDL, but below the RL. Analyte concentration should be considered an estimate.

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Level II QC Summary
Q23080190 Dionex INORGANIC IONS BY IC
Blank # 1
LCS # 1
MS # 1
MSD # 1
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
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
0.001
0.001
mg/L
1
0.0428
0.1
< MDL
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Chloride
5.26
5.26
mg/L
1
0.0154
5
105
80
120
Fluoride
4.9
4.9
mg/L
1
0.0479
5
98
80
120
Nitrate
5.31
5.31
mg/L
1
0.0209
5
106
80
120
Sulfate
5.08
5.08
mg/L
1
0.0428
5
102
80
120
Parent Sample:
J23070242 -- 2023016855
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Chloride
2.71
13.5
mg/L
5
0.0154
5
103
80
120
Fluoride
4.79
4.79
mg/L
1
0.0479
5
95.4
80
120
Nitrate
4.56
22.8
mg/L
5
0.0209
5
102
80
120
Sulfate
5.09
5.09
mg/L
1
0.0428
5
101
80
120
Parent Sample:
J23070242 -- 2023016855
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
RPD
Chloride
2.7
13.5
mg/L
5
0.0154
5
102
80
120
0.487
Fluoride
4.79
4.79
mg/L
1
0.0479
5
95.4
80
120
0
Nitrate
4.55
22.8
mg/L
5
0.0209
5
101
80
120
0.591
Sulfate
5.09
5.09
mg/L
1
0.0428
5
101
80
120
0.139
Qualifier
Qualifier
Qualifier
Qualifier

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Level II QC Summary
Q23080211 AG 7470 MERCURY (COLD VAPOR) IN WATER
Blank # 1
Parameter
Measured
Final
Mercury (Hg)
-0.022
-0.022
Blank # 2
Parameter
Measured
Final
Mercury (Hg)
-0.018
-0.018
Blank # 3
Parameter
Measured
Final
Mercury (Hg)
-0.02
-0.02
LCS # 1
Parameter Measured Final
Mercury (Hg) 1.71 1.71
LCS # 2
Parameter Measured Final
Mercury (Hg) 1.76 1.76
MS # 1
Parameter
Measured
Final
Mercury (Hg)
0.262
0.262
MSD # 1
Parameter
Measured
Final
Mercury (Hg)
0.261
0.261
MS # 2
Parameter
Measured
Final
Mercury (Hg)
1.13
1.13
MSD # 2
Parameter
Measured
Final
Mercury (Hg)
1.13
1.13
MS # 3
Parameter
Measured
Final
Mercury (Hg)
1.09
1.09
MSD # 3
Parameter
Measured
Final
Mercury (Hg)
1.06
1.06
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
ug/L
1
0.01
0.05
< MDL
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
ug/L
1
0.01
0.05
< MDL
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
ug/L
1
0.01
0.05
< MDL
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
ug/L
1
0.01
2
85.6
85 115
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
ug/L
1
0.01
2
88.2
85 115
Parent Sample:
J23070241 -- 2023016843
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
ug/L
1
0.01
1
26.2
75 125
M
Parent Sample:
J23070241 -- 2023016843
Units
Dil
MDL
Spike
% Recovery
LCL UCL RPD
Qualifier
ug/L
1
0.01
1
26.1
75 125 0.382
M
Parent Sample:
J23070242 -- 2023016855
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
ug/L
1
0.01
1
113
75 125
Parent Sample:
J23070242 -- 2023016855
Units
Dil
MDL
Spike
% Recovery
LCL UCL RPD
Qualifier
ug/L
1
0.01
1
113
75 125 0.0888
Parent Sample:
J23080263 -- 2023019623
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
ug/L
1
0.01
1
109
75 125
Parent Sample:
J23080263 -- 2023019623
Units
Dil
MDL
Spike
% Recovery
LCL UCL RPD
Qualifier
ug/L
1
0.01
1
106
75 125 2.7

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Level II QC Summary
Q23080211 AG 7470 MERCURY (COLD VAPOR) IN WATER
Qualifiers:
M Matrix Spike and/or Matrix Spike Duplicate recovery was outside of the control limits. The associated
Laboratory Control Spike (LCS) recovery was acceptable.

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Level II QC Summary
Q23080242 ICP_TRM TOTAL RECOVERABLE METALS BY ICP
Blank # 1
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Barium (Ba)
-0.0012
-0.0012
mg/L
1
0.002
0.005
< MDL
Boron (B)
-0.00148
-0.00148
mg/L
1
0.005
0.05
< MDL
Calcium (Ca)
0.00421
0.00421
mg/L
1
0.012
0.05
< MDL
Iron (Fe)
0.000291
0.000291
mg/L
1
0.004
0.01
< MDL
Lithium (Li)
0.000705
0.000705
mg/L
1
0.002
0.005
< MDL
Magnesium (Mg)
-0.00154
-0.00154
mg/L
1
0.008
0.02
< MDL
Manganese (Mn)
-0.000084
-0.000084
mg/L
1
0.001
0.005
< MDL
Zinc (Zn)
-0.000903
-0.000903
mg/L
1
0.004
0.005
< MDL
LCS # 1
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Barium (Ba)
5.11
5.11
mg/L
1
0.002
5
102
80
120
Boron (B)
5.01
5.01
mg/L
1
0.005
5
100
80
120
Calcium (Ca)
5.18
5.18
mg/L
1
0.012
5
104
80
120
Iron (Fe)
5.13
5.13
mg/L
1
0.004
5
103
80
120
Lithium (Li)
4.97
4.97
mg/L
1
0.002
5
99.4
80
120
Magnesium (Mg)
5.1
5.1
mg/L
1
0.008
5
102
80
120
Manganese (Mn)
5.15
5.15
mg/L
1
0.001
5
103
80
120
Zinc (Zn)
5.17
5.17
mg/L
1
0.004
5
103
80
120
MS # 1
Parent Sample:
J23070241
-- 2023016843
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Barium (Ba)
4.93
4.93
mg/L
1
0.002
5
98
75
125
Boron (B)
8.15
81.5
mg/L
10
0.005
5
113
75
125
Calcium (Ca)
47.3
473
mg/L
10
0.012
5
101
75
125
Iron (Fe)
4.92
4.92
mg/L
1
0.004
5
98.2
75
125
Lithium (Li)
7.41
7.41
mg/L
1
0.002
5
104
75
125
Magnesium (Mg)
11.4
114
mg/L
10
0.008
5
106
75
125
Manganese (Mn)
3.11
31.1
mg/L
10
0.001
5
98.8
75
125
Zinc (Zn)
4.75
4.75
mg/L
1
0.004
5
91.9
75
125
MSD # 1
Parent Sample:
J23070241
-- 2023016843
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
RPD
Barium (Ba)
5.02
5.02
mg/L
1
0.002
5
99.8
75
125
1.77
Boron (B)
8.03
80.3
mg/L
10
0.005
5
90.5
75
125
1.4
Calcium (Ca)
46.8
468
mg/L
10
0.012
5
12.1
75
125
0.94
Iron (Fe)
5
5
mg/L
1
0.004
5
99.8
75
125
1.57
Lithium (Li)
7.35
7.35
mg/L
1
0.002
5
103
75
125
0.745
Magnesium (Mg)
11.2
112
mg/L
10
0.008
5
70.9
75
125
1.57
Manganese (Mn)
3.09
30.9
mg/L
10
0.001
5
95.6
75
125
0.515
Qualifier
Qualifier
Qualifier
Qualifier
M4
M4

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Level II QC Summary
Q23080242 ICP_TRM TOTAL RECOVERABLE METALS BY ICP
MSD # 1 Parent Sample: J23070241 -- 2023016843
Parameter Measured Final Units Dil MDL Spike % Recovery LCL UCL RPD Qualifier
Zinc (Zn) 4.76 4.76 mg/L 1 0.004 5 92.2 75 125 0.357
Qualifiers:
M4 The spike recovery value was unusable since the analyte concentration in the sample was disproportionate
to the spike level. The associated Laboratory Control Spike recovery was acceptable.

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Level II QC Summary
Q23080246 IMS_TRM TOTAL RECOVERABLE METALS BY ICP-MS
Blank # 1
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Antimony (Sb)
-0.005
-0.005
ug/L
1
0.104
1
< MDL
Arsenic (As)
0.002
0.002
ug/L
1
0.111
1
< MDL
Beryllium (Be)
0.006
0.006
ug/L
1
0.249
1
< MDL
Cadmium (Cd)
0.012
0.012
ug/L
1
0.032
1
< MDL
Chromium (Cr)
-0.166
-0.166
ug/L
1
0.185
1
< MDL
Cobalt (Co)
0.006
0.006
ug/L
1
0.077
1
< MDL
Copper (Cu)
0.002
0.002
ug/L
1
0.787
1
< MDL
Lead (Pb)
0.007
0.007
ug/L
1
0.037
1
< MDL
Molybdenum (Mo)
0.02
0.02
ug/L
1
0.18
1
< MDL
Nickel (Ni)
-0.003
-0.003
ug/L
1
0.256
1
< MDL
Selenium (Se)
-0.111
-0.111
ug/L
1
0.193
1
< MDL
Silver (Ag)
0.008
0.008
ug/L
1
0.035
1
< MDL
Thallium (TI) Low Level
-0.002
-0.002
ug/L
1
0.041
0.2
< MDL
Vanadium (V) Low Level
0.001
0.001
ug/L
1
0.114
0.3
< MDL
LCS # 1
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Antimony (Sb)
48.3
48.3
ug/L
1
0.104
50
96.6
80
120
Arsenic (As)
49
49
ug/L
1
0.111
50
98
80
120
Beryllium (Be)
47
47
ug/L
1
0.249
50
93.9
80
120
Cadmium (Cd)
48.6
48.6
ug/L
1
0.032
50
97.1
80
120
Chromium (Cr)
47.9
47.9
ug/L
1
0.185
50
95.8
80
120
Cobalt (Co)
50.4
50.4
ug/L
1
0.077
50
101
80
120
Copper (Cu)
50.3
50.3
ug/L
1
0.787
50
101
80
120
Lead (Pb)
49.1
49.1
ug/L
1
0.037
50
98.3
80
120
Molybdenum (Mo)
48.9
48.9
ug/L
1
0.18
50
97.7
80
120
Nickel (Ni)
49.8
49.8
ug/L
1
0.256
50
99.5
80
120
Selenium (Se)
47
47
ug/L
1
0.193
50
94
80
120
Silver(Ag)
49
49
ug/L
1
0.035
50
98
80
120
Thallium (TI) Low Level
47.6
47.6
ug/L
1
0.041
50
95.2
80
120
Vanadium (V) Low Level
48.1
48.1
ug/L
1
0.114
50
96.2
80
120
MS # 1
Parent Sample:
J23070241
-- 2023016844
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Antimony (Sb)
47.3
47.3
ug/L
1
0.104
50
92.9
75
125
Arsenic (As)
55.6
55.6
ug/L
1
0.111
50
99.4
75
125
Beryllium (Be)
45.4
45.4
ug/L
1
0.249
50
89.7
75
125
Cadmium (Cd)
47.8
47.8
ug/L
1
0.032
50
94.4
75
125
Chromium (Cr)
47.7
47.7
ug/L
1
0.185
50
89.3
75
125
Cobalt (Co)
120
120
ug/L
1
0.077
50
99.3
75
125
Qualifier
Qualifier
Qualifier

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Level II QC Summary
Q23080246 IMS_TRM TOTAL RECOVERABLE METALS BY ICP-MS
MS # 1
Parameter
Measured
Final
Units
Dil
MDL
Spike
Copper(Cu)
60.3
60.3
ug/L
1
0.787
50
Lead (Pb)
52.6
52.6
ug/L
1
0.037
50
Molybdenum (Mo)
89.1
891
ug/L
10
0.18
50
Nickel (Ni)
62.9
62.9
ug/L
1
0.256
50
Selenium (Se)
80.1
80.1
ug/L
1
0.193
50
Silver (Ag)
46.7
46.7
ug/L
1
0.035
50
Thallium (TI) Low Level
47.8
47.8
ug/L
1
0.041
50
Vanadium (V) Low Level
57.1
57.1
ug/L
1
0.114
50
MSD # 1
Parameter
Measured
Final
Units
Dil
MDL
Spike
Antimony (Sb)
46.8
46.8
ug/L
1
0.104
50
Arsenic (As)
55.8
55.8
ug/L
1
0.111
50
Beryllium (Be)
46
46
ug/L
1
0.249
50
Cadmium (Cd)
47.5
47.5
ug/L
1
0.032
50
Chromium (Cr)
47.1
47.1
ug/L
1
0.185
50
Cobalt (Co)
121
121
ug/L
1
0.077
50
Copper (Cu)
60.1
60.1
ug/L
1
0.787
50
Lead (Pb)
52.2
52.2
ug/L
1
0.037
50
Molybdenum (Mo)
88.2
882
ug/L
10
0.18
50
Nickel (Ni)
62.6
62.6
ug/L
1
0.256
50
Selenium (Se)
80
80
ug/L
1
0.193
50
Silver (Ag)
46.4
46.4
ug/L
1
0.035
50
Thallium (TI) Low Level
47.5
47.5
ug/L
1
0.041
50
Vanadium (V) Low Level
56.3
56.3
ug/L
1
0.114
50
Parent Sample: J23070241 -- 2023016844
% Recover v
LCL
UCL
98
75
125
98.9
75
125
108
75
125
97.5
75
125
94.6
75
125
93.3
75
125
94.1
75
125
92.3
75
125
Parent Sample: J23070241 -- 2023016844
% Recovery
LCL
UCL
RPD
91.9
75
125
1.08
99.8
75
125
0.4
91
75
125
1.44
93.8
75
125
0.585
88.1
75
125
3.47
100
75
125
1.08
97.5
75
125
0.452
98.1
75
125
0.823
91.1
75
125
17.2
96.9
75
125
0.654
94.4
75
125
0.184
92.8
75
125
0.576
93.6
75
125
0.477
90.8
75
125
1.57
Qualifier
Qualifier

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J23070242
Level II QC Summary
Q23080193 TDS TOTAL DISSOLVED SOLIDS
Blank # 1
Blank # 2
Parameter Measured Final
TDS 0.4
Parameter Measured Final
TDS 0
Duplicate # 1
Parameter Measured Final
TDS 3480
Duplicate # 2
Parameter Measured Final
TDS 55
LCS # 1
LCS # 2
Parameter Measured Final
TDS 501
Parameter Measured Final
TDS 502
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:
J23070241
-- 2023016843
Units
Dil
MDL
RPD
Qualifier
mg/L
1
25
1.71
Parent Sample:
J23070180 -- 2023016444
Units
Dil
MDL
RPD
Qualifier
mg/L
1
25
1.83
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Qualifier
mg/L
1
25
500
100
90
110
Units
Dil
MDL
S ike
% Recovery
LCL
UCL
Qualifier
mg/L
1
25
500
100
90
110

CHAIN OF CUSTODY RECORD AND ANAI YSIS RF[]uFST FnRU
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EPA 7410A! IMS - Cl, F, NO3-N
SWf020B: 36, As, Be, (48�ir Hold
Cd, Cr, Co, Cu, Pb, No Time), SO4
Ni, Se, Ag, TI, V (14)
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Comments
Regulatory Agency: NCDENRIDWM - SW Section - NCDEQ EDD Required I Permit N18-04 EOUIS EDD REQUIRED
Use indicated or comparable methods.

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

M W-3
9
8
7
6
u 5
a 4
3
2
1 /1 /1990 1 /1 /1995 1 /1 /2000 1 /1 /2005 1 /1 /2010 1 /1 /2015 1 /1 /2020
M W-4
9
8
7
6
u
C.
5
4
3
1 /1 /1990 1 /1 /1995 1 /1 /2000 1 /1 /2005 1 /1 /2010 1 /1 /2015 1 /1 /2020
LEGEND NOTES
!'. DUKE
:
DRAWN BY: D. AVARD DATE:06/06//2022
APPENDIX C
S.U. —Standard Units
� Non -detect
� ENERGY
REVISED BY: D. AVARD DATE: 11/02/2023
TIME VERSUS PH CONCENTRATIONS
Detect
CHECKED BY: T. COLTON DATE: 11/02/2023
DRY ASH LANDFILL SEMIANNUAL
APPROVED BY: T.COLTON DATE: 11/02/2023
WATER QUALITY MONITORING REPORT
15A NCAC 02L Standard for groundwater (6.5 — 8.5)
synTerra
PROJECT MANAGER: T. COLTON
MARSHALL STEAM STATION
TERRELL, NORTH CAROLINA
www.synterracorp.com

M W-4
5
OOM`
J
4
O
M
3
L
V
O
2
V
O
1
.E
Q
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: 11/02/2023
TIME VERSUS ANTIMONY CONCENTRATIONS
-0— Detect
CHECKED BY: T. COLTON
DATE: 11/02/2023
DRY ASH LANDFILL SEMIANNUAL
APPROVED BY: T. COLTON
DATE: 11/02/2023
WATER QUALITY MONITORING REPORT
15A NCAC 02L Standard for
Antimony in groundwater (1 Ng/L)
��
PROJECT MANAGER: T. COLTON
MARSHALL STEAM STATION
synTerra
TERRELL, NORTH CAROLINA
www.synterracorp.com

10
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M
L
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V \
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O ZL4
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M
2
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V
0 +�--r�
1/1/2018
M W-3
1 /1 /2019 1 /1 /2020 1 /1 /2021 1 /1 /2022 1 /1 /2023
4
0 4-
1 /1 /2011
MWA
1 /1 /2013 1 /1 /2015 1 /1 /2017 1 /1 /2019 1 /1 /2021 1 /1 /2023
LEGEND NOTES
!'. DUKE
:
DRAWN BY: D. AVARD DATE:06/06//2022
APPENDIX C
µg/L— milligrams per liter
� Non -detect
� ENERGY
REVISED BY: D. AVARD DATE: 11/02/2023
TIME VERSUS COBALT CONCENTRATIONS
Detect
CHECKED BY: T. COLTON DATE: 11/02/2023
DRY ASH LANDFILL SEMIANNUAL
APPROVED BY: T. COLTON DATE: 11/02/2023
WATER QUALITY MONITORING REPORT
15A NCAC 02L Standard for Cobalt
PROJECT MANAGER: T. COLTON
MARSHALL STEAM STATION
in groundwater (1 pg/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: 11/02/2023
TIME VERSUS IRON CONCENTRATIONS
Detect
CHECKED BY: T. CO TON
DATE: 11/02/2023
DRY ASH LANDFILL SEMIANNUAL
APPROVED BY: T. COLTON
DATE: 11/02/2023
WATER QUALITY MONITORING REPORT
15A NCAC 02L Standard for Iron in
groundwater (300 pg/L)
4`
7
PROJECT MANAGER: T. COLTON
MARSHALL STEAM STATION
synTerra
TERRELL, NORTH CAROLINA
www. synterra Corp. com

M W-4
160
J
ZL
128
O
96
4 W
O
V
V
64
O
O
p1
32
M
0
8/1 /1989 8/1 /1994
8/1 /1999 8/1 /2004
8/1 /2009
8/1 /2014 8/1 /2019
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: 11/02/2023
TIME VERSUS MANGANESE CONCENTRATIONS
Detect
CHECKED BY: T. COLTON DATE: 11/02/2023
DRY ASH LANDFILL SEMIANNUAL
APPROVED BY: T. COLTON DATE: 11/02/2023
WATER QUALITY MONITORING REPORT
15A NCAC 02L Standard for
Manganese in groundwater (50 Ng/L )
��
PROJECT MANAGER: T. COLTON
MARSHALL STEAM STATION
synTerra
TERRELL, NORTH CAROLINA
www.synterracorp.com