3620_DukeAllen_2025ECMReport_FID2187036_20260117

(' DUKE
ENERGY-.
January 16, 2026
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: Environmental Controls Monitoring Semi -Annual Report
South Starter Landfill
Permit No.: 3620-INDUS-2022
Allen Steam Station
Gaston County, North Carolina
Dear Ms. Moutos:
525 S. Tryon St.
Mail Code: DEP-36A
Charlotte NC, 28202
In accordance with the Environmental Control Monitoring Plan (ECMP) Revision 2, Duke Energy is providing
the results of the 2025 second semi-annual leachate, construction drain, and surface water sampling and
leak detection system (LDS) monitoring for the Allen Steam Station South Starter Landfill (SSLF) (Permit No.:
3620-INDUS-2022), located near Belmont, in Gaston County, North Carolina. This is the initial
Environmental Controls Monitoring Report (ECMR) prepared for the SSLF since it became operational at the
end of July 2025. Therefore, this SSLF ECMR reporting period spans just two months.
On August 27, 2025, samples were collected from the SSLF leachate collection system (LCS) and
construction drain. No sample was able to be collected from the surface water location since it was dry.
The samples were collected by Duke Energy personnel and analyzed by the Duke Energy Analytical
Laboratory. A summary of monitoring results can be found in the attached ECMR. The parameters tested
are not bound by state groundwater or surface water standards. All laboratory analytical and field results
are provided in the appendices of the Report.
The attached ECMR narrative and Drawing 2 have been updated to reflect changes to the leachate
management process and leachate force main alignment per the approved landfill leachate management
reroute that was completed in July 2025. Duke Energy appreciates the extension granted by the Section for
this ECMR submittal to allow additional time to incorporate this change.
Allen Steam Station's SSLF is sampled semi-annually, typically during the months of March and September.
The next landfill sampling event is scheduled for March 2026 with documentation to follow.
www.duke-energy.com Page 1 of 2

If you need additional information regarding this submittal do not hesitate to email or call me at
[e-mail] or [phone].
Respectfully,
Courtney W. Murphy, P.G.
Environmental Services
Attachments: Environmental Controls Monitoring Semiannual Report — July 2025 through August 2025
(SynTerra, January 14, 2026)
cc (via e-mail): Jordan Russ, NCDEQ
Elizabeth Werner, NCDEQ
Sherri Stanley, NCDEQ
Ben Dawkins, Duke Energy
Sheila Westcott, Duke Energy
Kenneth McKinney, Duke Energy
Charlie Smith, Duke Energy
Tyler Hardin, Duke Energy
Kim Witt, Duke Energy
www.duke-energy.com Page 2 of 2

NCDEQ Division of Waste Management Environmental Monitoring
Solid Waste Section Reporting Form
Note: 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. List complete permit IDs (ie, 0101-MSWLF-1972, 0101-CDLF-1962, etc)
• Type or print legibly.
• Groundwater: Attache a notification table with values that attain or exceed NC 2L groundwater standards and/or other applicable groundwater
protection standards.
• Surface Water: Attach a notification table with values that attain or exceed NC 2B surface water standards.
• Landfill Gas: Attach a notification table of any methane gas values that attain or exceed explosive gas levels
• Notification tables must include a preliminary analysis of the cause and significance of each value, as known or suspected.
• Submit electronic or hardcopy singed and sealed form, tables, and Electronic Data Deliverables to the Section Hydrogeologist assigned to the
facility. Hard copies can be mailed to : Environmental Compliance Branch, NCDEQ-DWM, Solid Waste Section, 1646 Mail Service Center,
Raleigh, NC 27699-1646
Solid Waste Monitoring Data Submittal Information
NAME of ENTITY submitting data (ie, laboratory, consultant, facility owner):
SynTerra Corporation (Consultant)
CONTACT:
Name: Christopher Suttell Phone: [phone] E-mail: [e-mail]
Permit ID (i.e„ 1010-MSWLF-1980) NC Landfill Rule:
Faci lity Name: * List all that apply * County (.0500 or .1600) Sample Collection Date(s)
Duke Energy Carolinas, LLC 3620 Gaston .0500 8/27/2025
Allen Steam Station
South Starter Landfill
Environmental Status : (Check all that apply)
E] Initial/Baseline Monitoring © Detection Monitoring Assessment Monitoring ❑ Corrective Action
Type of Data submitted: (Check all that apply)
Groundwater monitoring data from monitoring wells H
Methane gas monitoring data
Groundwater monitoring data from private water supply wells Corrective action data (specify)
Leachate monitoring data
Surface water monitoring data Ej Other (specify) Groundwater monitoring data from construction drains
Notification Attached?
BNO. No Groundwater, surface water, or landfill gas 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 a
preliminary analysis of the cause and significance of any exceedance.
YES - a notification of values exceeding an explosive 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 or surface water standards or
explosive gas levels, and a preliminary analysis of the cause and significance of concentrations exceeding 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.
Christopher J. Suttell Senior Project Manager
Facility Representative Name ( Print) Title
_ Affix NC Licensed/ Professional Geologist or PE Seal
January 14, 2026
Signature Date �t scesrrrr�
148 River Street, Suite 220, Greenville SC 29601 4�'aiAN,�;•••y!
Facility Representative Address,,_
C-387 (Geological)
NC Geological Corporation Number or NC PE Firm License Number
(if applicable effective May 1 , 2009)
-06 y.6�
�4**Q ER S. a°9`a Revised
NIallm 10/01/2025

REPORT VERIFICATION
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ALLEN STEAM STATION
SOUTH STARTER LANDFILL
PERMIT NO. 3620-INDUS
TITLE: ENVIRONMENTAL CONTROLS MONITORING SEMIANNUAL REPORT
This document has been reviewed for accuracy and quality commensurate with the intended
application.
Prepared by:
Approved by:
Project Manager: Christopher Suttell, NC L.G. #2426
Date: 1/14/2026
Date: 1/14/2026
Licensed Geologist Seal:
SynTerra
148 River Street, Suite 220
Greenville, SC 29601
North Carolina Geological Corporation Number C-387

Environmental Controls Monitoring
Semiannual Report
July 2025 through August 2025
Allen Steam Station
South Starter Landfill (Permit No. 3620-INDUS)
Gaston County, North Carolina
t
� DUKE
ENERGY:.
CAROU NA,'�
PREPARED FOR:
Duke Energy Carolinas, LLC
January 14, 2026
Project Manager
Hanna Cunningham
Staff Scientist
Christopher Suttell
Senior Peer Reviewer

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
Table of Contents
1.0
Background...................................................................................................................................1
1.1
Site Description................................................................................................................................... 1
1.1.1 South Starter Landfill.................................................................................................................... 1
1.1.2 Leachate Basin............................................................................................................................. 2
1.1.2 Construction Drain....................................................................................................................... 2
1.1.4 Surface Water Management......................................................................................................... 2
1.2
Summary of Site Geology and Hydrology............................................................................................... 3
2.0
Monitoring, Sampling, and Analysis Locations and Methods............................................................... 4
3.1
Leak Detection System Monitoring....................................................................................................... 4
3.2
Leachate Sampling and Analysis............................................................................................................ 4
2.3
Construction Drain Outlet Sampling and Analysis................................................................................... 5
2.4
Surface Water Sampling and Analysis.................................................................................................... 5
3.0
Monitoring, Sampling, and Analysis Results...................................................................................... 5
3.1
Leak Detection System Monitoring Results............................................................................................ 5
3.2
Leachate and Analytical Results............................................................................................................ 6
3.3
Construction Drain Outlet Analytical Results.......................................................................................... 6
3.4
Surface Water Analytical Results........................................................................................................... 6
4.0
References....................................................................................................................................7
Page i

Environmental Controls Monitoring Semiannual Report
South Starter Landfill (Permit No. 36209-INDUS)
July 2025 through August 2025
List of Drawings
Drawing 1 Site Location Map
Drawing 2 Monitoring Locations
List of Tables
Table 1 Leak Detection System Monitoring Results — South Starter Landfill
Table 2 Leachate Analytical Results — August 27, 2025
Table 3 Construction Drain Outlet Analytical Results — August 27, 2025
List of Appendices
Appendix A Field Sampling Forms
Appendix B Laboratory Reports, Data Validation Checklists, and Chain -of -Custody Forms
Page ii

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
1.0 Background
This Environmental Controls Monitoring Semiannual Report documents monitoring results pertaining to the
South Starter Landfill (SSLF or landfill; Permit No. 3620-INDUS) located at the Duke Energy Carolinas, LLC (Duke
Energy) Allen Steam Station (Allen, Station, or Site). The monitoring results in this report are for the period of
July 2025 through October 2025.
The Environmental Controls Monitoring Plan (ECMP) establishes locations and procedures for monitoring the
early detection of solid waste or leachate potentially released to the environment from the SSLF. The
Environmental Control Monitoring Plan, Revision 2 (ECMP, Revision 2; SynTerra, 2025) was submitted to the
North Carolina Department of Environmental Quality (NCDEQ) Division of Waste Management (DWM) on May
23, 2025, and approved by the NCDEQ DWM on June 16, 2025. The August 2025 monitoring event (the first
since the SSLF began operation) and this report comply with the ECMP, Revision 2 (SynTerra, 2025).
The landfill is designed and constructed in accordance with North Carolina General Statute (G.S.) 130A-295.4 for
Combustion Products Landfills as discussed in the ECMP, Revision 2 (SynTerra, 2025). The procedures
established in the ECMP and the associated monitoring documented in this report are intended to satisfy the
water quality monitoring plan required by North Carolina Administrative Code (NCAC), Title 15A, Subchapter 13B
.0504(c)(8)(D) in accordance with G.S. 130A-295.4(c).
1.1 Site Description
A summarized description of the SSLF is provided below. A more detailed description of the SSLF and
the Site is presented in the ECMP, Revision 2 (SynTerra, 2025). The Station is no longer used for power
generation and is now in the process of being decommissioned.
The SSLF [in accordance with G.S. 130A-295.4(b)] is constructed with a base liner system that includes
a primary and secondary geomembrane liner. The primary and secondary liners are separated by a
geocomposite drainage layer to create a leak detection layer. The geocomposite provides enough
capacity to convey liquid that enters the leak detection layer to a sump area (lowest elevation in an
area of the liner system) where it is collected for removal by mechanical pumping. Removal of liquid
from the leak detection layer in addition to the combination of a geosynthetic clay liner (GCL) and
compacted soil liner beneath the secondary liner reduces the potential for liquid to enter the
environment. The quantity of liquid removed from the leak detection layer is measured and recorded.
1.1.1 South Starter Landfill
The approximately 22-acre SSLF is located primarily south of the Active Ash Basin (AAB) but
partially overlaps the southeast portion of the AAB (Drawing 1). The SSLF is bound by the AAB to
the north, upland areas to the south and west, and lowland areas and the Catawba River (Lake
Wylie) to the east (Drawing 2).
Most of the waste intended for placement throughout the life of the landfill consists of coal
combustion residuals (CCR), predominantly fly ash and bottom ash. The approved waste streams
are in the Operations Plan — Revision 1, Allen Steam Station South Starter Landfill Permit No.
3620-INDUS) (Operations Plan; AECOM, 2025). Leachate from the SSLF is primarily conveyed via
forcemain to the on -Site wastewater treatment system (WWTS), however a secondary
conveyance to the Leachate Basin via forcemain is available for temporary storage when the
WWTS is off-line. Leachate conveyance from the Leachate Basin is described in Section 1.1.2.
Page 1

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
The SSLF received a Permit to Operate on July 22, 2025, and began receiving CCR on July 30,
2025.
1.1.2 Leachate Basin
The approximately 3-acre Leachate Basin is located within the northwestern portion of the AAB
and is bounded by the Retired Ash Basin (RAB) to the north, AAB to the east and south, and
upland areas to the west (Drawings 1 and 2). Leachate Basin monitoring is included in a
separate environmental controls monitoring report.
Leachate from the Leachate Basin is pumped via force main to the on -Site WWTS where it is
comingled with other wastewaters for treatment. Flows from the on -Site WWTS are discharged
to the Catawba River (Lake Wylie) through Outfall 002 in accordance with National Pollutant
Discharge Elimination System (NPDES) Permit NC0004979 (Drawing 2).
In a letter dated October 2, 2024, the NCDEQ granted interim approval for operation of a
temporary pumping system and to place CCR as interim cover in the Leachate Basin. Final
approval of Leachate Basin operation was granted on November 14, 2023, after the permanent
pumping system was in place and upon receipt of the NCDEQ's approval of the Leachate Basin
Construction Certification Report, Volumes 1 through 3 (FID 1776828, 1818490, and 1820954),
which contained construction quality assurance information. The Leachate Basin began
operating on November 14, 2023, receiving leachate from the North Starter Landfill (NSLF). The
Leachate Basin began to receive some leachate from the SSLF upon approval of the Permit to
Operation received July 22, 2025, although leachate from the SSLF is primarily routed directly to
the on -Site WWTS.
1.1.3 Construction Drain
A gravity flow construction drain was installed beneath the SSLF for the purpose of maintaining
groundwater elevations in the area at levels at least 4 feet below the composite liner system.
The SSLF construction drain is comprised of a 6-inch high -density polyethylene (HDPE) DR-11
perforated piping network placed beneath the composite liner system of the SSLF (Drawing 2).
The pipes are surrounded by 6 inches of stone with a geotextile wrap and convey collected
groundwater for discharge via 6-inch solid HDPE DR-11 piping. The construction drain was
completed in May 2024 and has been operational since that time.
The construction drain outlet sample location, ALN-SSLF-CD1B, is at the terminus of discharge
pipes within a wet well structure adjacent to the northeastern corner of the SSLF (Drawing 2).
Construction drain discharge from the wet well is pumped to either the AAB Polishing Pond or a
lined equalization basin within the AAB temporarily before being collected and managed
through the on -Site WWTS and discharged to the Catawba River (Lake Wylie) through Outfall
002 in accordance with NPDES Permit NC0004979.
1.1.4 Surface Water Management
The SSLF was designed to provide separation of contact water from non -contact stormwater.
Contact stormwater is managed as leachate. Non -contact stormwater runoff from the landfill is
conveyed to the perimeter channel network via a series of tack -on berms, benches, and down
chutes.
Page 2

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
No surface water streams are upgradient of the SSLF. An intermittent stream originates
immediately downgradient of the SSLF disposal area. Surface water is sampled at one location
(ALN-SSLF-SW1) within the intermittent stream down and side -gradient of the SSLF (Drawing 2).
1.2 Summary of Site Geology and Hydrology
The groundwater system at Allen is consistent with the regolith-fractured rock system and is
characterized as an unconfined, interconnected aquifer system indicative of the Piedmont
physiographic province in which the Site is contained. The groundwater system at the Site is divided
into the following three flow layers to distinguish the interconnected groundwater system: the shallow
flow zone, the deep flow zone (transition zone), and the bedrock flow zone.
The AAB, RAB, Distribution of Residual Solids (DORS) Fills (which includes two ash storage areas and
two structural fills), RAB Ash Landfill, NSLF, and SSLF are contained within former perennial stream
valleys (the flow compartment) (Drawing 1). Groundwater within the flow compartment is a flow -
through system. In the vicinity of the SSLF, groundwater enters the system from the upgradient end in
the western portion of Duke Energy property boundary and flows laterally beneath the central
portions of the AAB and SSLF and downward near the AAB dam. Beyond the dam, groundwater flows
toward and discharges to the Catawba River (Lake Wylie).
A groundwater divide is present in the vicinity of the SSLF to the west and south of the SSLF (Drawing
1). The groundwater divide is upgradient of the SSLF and roughly follows topography along South Point
Road (to the west) and Reese Wilson Road (to the south). The topographically controlled flow direction
provides natural hydraulic control of groundwater in the vicinity of the SSLF, ash basins, and adjacent
sources within the flow compartment.
Page 3

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
2.0 Monitoring, Sampling, and Analysis Locations and Methods
2.1 Leak Detection System Monitoring
Leak detection monitoring occurs in the vicinity of the landfill sump (ALN-SSLF-LDS1) (Drawing 2).
Performance of the leak detection system (LDS) is determined by the average monthly quantity of
liquid removed from the leak detection layer. Each leak detection discharge pump is equipped with a
pump totalizer (flow meter). The flow meter rates were monitored and recorded as defined in the
Operations Plan (AECOM, 2025).
Leak detection monitoring results are summarized in Section 3.1.
ZI Leachate Sampling and Analysis
A discrete leachate sample was collected from the leachate collection discharge in the vicinity of the
landfill sump at location ALN-SSLF-LCS1 on August 27, 2025. The leachate sample location is shown on
Drawing 2.
Duke Energy personnel collected samples and documented the sampling in accordance with
procedures provided in Duke Energy's Landfill Sample Collection Guideline (SynTerra, 2023 Appendix 1).
Copies of the field sampling forms are included in Appendix A. The parameters and constituents
reported were sampled in accordance with Table 1 of the approved ECMP, Revision 2 (SynTerra, 2025).
The Duke Energy Analytical Laboratory (North Carolina Laboratory Certification #248) analyzed the
constituents. The laboratory report and chain -of -custody (COC) forms are included in Appendix B.
The leachate samples were measured for the following parameters in the field:
pH, specific conductivity, temperature, dissolved oxygen, and oxidation-reduction potential
using a water quality meter
• Turbidity using a turbidity meter
The leachate samples were analyzed in the laboratory for the following constituents:
• Barium, boron, calcium, iron, lithium, magnesium, manganese, and zinc using U.S.
Environmental Protection Agency (USEPA) Method 6010D
• Antimony, arsenic, beryllium, cadmium, chromium, cobalt, copper, lead, molybdenum, nickel,
selenium, thallium, and vanadium using USEPA Method 6020B
• Chloride, fluoride, nitrate (as nitrogen), and sulfate using USEPA Method 9056A
• Mercury using USEPA Method 7470A
• Silver using USEPA Method 6020B
• Total dissolved solids using Standard Method (SM) 2540C
Leachate field parameters and analytical results are summarized in Section 3.2.
Page 4

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
Z.3 Construction Drain Outlet Sampling and Analysis
A construction drain outlet sample was collected from sample location ALN-SSLF-CD1B on August 27,
2025 (Drawing 2).
Copies of the field calibration and sampling forms are included in Appendix A. The parameters and
constituents reported were sampled in accordance with Table 1 of the approved ECMP, Revision 2
(SynTerra, 2025). The Duke Energy Analytical Laboratory analyzed the constituents. The laboratory
report and COC forms are included in Appendix B.
The construction drain outlet sample was measured for the same set of parameters and constituents
as the leachate samples (Section 2.2) and the following additional parameters:
• Beryllium (dissolved), cadmium (dissolved), chromium (dissolved), copper (dissolved), lead
(dissolved), and nickel (dissolved) using USEPA Method 6020B
• Silver (dissolved) using USEPA Method 6020B
• Total hardness and zinc (dissolved) using USEPA Method 6010D
Construction drain outlet field parameters and analytical results are summarized in
Section 3.3.
2.4 Surface Water Sampling and Analysis
Surface water is designated to be sampled from an intermittent stream that flows downgradient and
side -gradient of the SSLF to the south from sample location ALN-SSLF-SW1 (Drawing 2). However, a
surface water sample was not collected during the August 2025 sampling event because of insufficient
flow within the stream channel.
3.0 Monitoring, Sampling, and Analysis Results
3.1 Leak Detection System Monitoring Results
Leakage rates were less than the initial response leakage rate (IRLR) and action leakage rate (ALR)
during the reporting period.
An average daily leakage rate is calculated for the operational SSLF each month and compared to the
IRLR and ALR for the landfill LDS as defined in the Operations Plan (AECOM, 2025).
Average daily leakage rates for the SSLF were calculated as follows:
1. Calculate the monthly total volume pumped (gallons):
monthly volume pumped (gallons) = current month total flow meter reading — preceding month
total flow meter reading
2. Calculate the average daily leakage rate [gallons per acre per day (gpad)]:
average daily leakage rate (gpad) = monthly volume pumped (gallons) _ landfill cell area (acres)
monitoring duration (days)
Page 5

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
The LDS monitoring results for location ALN-SSLF-LDS1 are included in Table 1. The LDS leakage rate
data collection details are kept with on -Site records.
No leakage rates or notable variances in the data outside of the normal operating range for the landfill
were observed during the monitoring period.
32 Leachate and Analytical Results
Leachate analytical results are not compared to surface water or groundwater quality standards.
The leachate analytical results for sample ALN-SSLF-LCS1 are included in Table 2.
As normal laboratory practice, select samples were diluted to within the calibrated range of analysis.
Specifics regarding the diluted samples, including the dilution factor, are reported in the electronic
data deliverable and the laboratory analytical report. The laboratory analytical report, data validation
checklist, and COC form associated with data collected as part of this semiannual monitoring period
are included in Appendix B.
3.3 Construction Drain Outlet Analytical Results
Construction drain outlet analytical results are not compared to surface water or groundwater quality
standards.
The construction drain outlet analytical results for sample ALN-SSLF-CD1B are included in Table 3.
The construction drain outlet sample is included in the same laboratory analytical report, data
validation checklist, and COC form as the leachate data collected as part of this semiannual monitoring
period (Appendix B).
3.4 Surface Water Analytical Results
During the August 2025 sampling event, a surface water sample was not collected because of
insufficient flow within the intermittent stream channel at designated sample location ALN-SSLF-SW1;
therefore, there are no surface water analytical results to report.
Page 6

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
4.0 References
AECOM. (2021). Engineering and Facility Plan, Revision 1 — Duke Energy Carolinas, LLC., Allen Steam
Station —South Starter Landfill, Permit No. 3620-INDUS. March 26, 2021.
AECOM. (2025). Operations Plan, Revision 1 — Duke Energy Carolinas, LLC., Allen Steam Station —South
Starter Landfill, Permit No. 3620-INDUS. May 16, 2025.
SynTerra. (2023). Environmental Control Monitoring Plan, Revision 2 — Duke Energy Carolinas, LLC., Allen
Steam Station — North Starter Landfill, Permit No. 3619-INDUS. July 2023.
Page 7

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
Drawings

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RETIRED ASH BASIN 1 WASTE BOUNDARY I __
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NOTES:
1. ALL BOUNDARIES ARE APPROXIMATE.
2. WATER FEATURES DEPICTED WITHIN WASTE BOUNDARIES
OF THE ASH BASINS ON THE USGS TOPOGRAPHIC MAP"
DO NOT REPRESENT CURRENT CONDITIONS. }' _r sa,1j �, t J
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3. UNITED STATES GEOLOGICAL SURVEY TOPOGRAPHIC MAP
OBTAINED FROM ESRI, LAST UPDATED OCTOBER 2025. -
DRAWING 1
>DUKE SITE LOCATION MAP
ENERGY® wwsroN-sa Em ENVIRONMENTAL CONTROLS MONITORING SEMIANNUAL REPORT
CAROLINAS SOUTH STARTER LANDFILL (PERMIT NO. 3620-INDUS)
asHevaLE • JULY 2025 THROUGH AUGUST 2025
ALLEN STEAM STATION
�� • - GASTON COUNTY, NORTH CAROLINA
CHARLOTTE
GASTON DRAWN BY: C. NORRIS DATE: 12/31/2025 GRAPHIC SCALE
COUNTY REVISED BY: C. NORRIS DATE: OV13/2026 soda o iaao 2000
synTerra CHECKED BY- C SUTTELL DATE: 01/13/2026
APPROVED BY: C. SUTTELL DATE: 01/13/2026 (IN FEET)
WWW.spterracorp.colY1 PROJECT MANAGER: C. SUTTELL
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G SURFACE WATER SAMPLING LOCATION
0 NPDES OUTFALL
❑ CONSTRUCTION DRAIN WET WELL
CONSTRUCTION DRAIN
LEACHATE FORCE MAIN
• CURRENT TEMPORARY LEACHATE FORCE MAIN
--• LEACHATE BASIN
NORTH STARTER LANDFILL BOUNDARY
--• SOUTH STARTER LANDFILL BOUNDARY
O SITE FEATURES
kZ: ACTIVE ASH BASIN WASTE BOUNDARY
L RETIRED ASH BASIN WASTE BOUNDARY
k_-' RETIRED ASH BASIN ASH LANDFILL WASTE BOUNDARY
DORS FILLS BOUNDARIES
DUKE ENERGY CAROLINAS PROPERTY BOUNDARY
SURFACE WATER FLOW DIRECTION
` > STREAM (AMEC NRTR 2015)
E WETLAND (AMEC NRTR 2015)
NOTES:
1. THE WATERS OF THE US HAVE NOT BEEN APPROVED BY THE US ARMY CORPS OF
ENGINEERS AT THE TIME OF THE MAP CREATION. THIS MAP IS A PRELIMINARY
JURISDICTIONAL DETERMINATION ONLY. THE WETLANDS AND STREAMS BOUNDARIES WERE
OBTAINED FROM AMEC FOSTER WHEELER ENVIRONMENTAL & INFRASTRUCTURE, INC.
NATURAL RESOURCE TECHNICAL REPORT FOR ALLEN STEAM STATION DATED MAY 29, 2015.
2. BOUNDARIES ARE APPROXIMATE.
NPoes 3. PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY CAROLINAS.
OUTFACE 002
4. AERIAL IMAGERY IS A COMBINATION OF DUKE ENERGY PROPELLER AERIAL PHOTOGRAPHY
COLLECTED ON MAY 13, 2025 AND MAXAR IMAGERY FROM ESRI COLLECTED ON MAY 28, 2024.
ALN-SSLF-CDlA
5. DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
ALN-SSLF-CDlB COORDINATE SYSTEM PIPS 3200 (NAD83).
6. FOR CONSTRUCTION DRAIN DETAILS, SEE RESPECTIVE LANDFILL CONSTRUCTION QUALITY
EASTSEDIMENT ASSURANCE REPORTS BY WSP USA, INC.
BASIN
7. DORS - DISTRIBUTION OF RESIDUAL SOLIDS
8. NPDES - NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
9. LEACHATE FORCE MAIN ALIGNMENT PROVIDED BY AECOM ON JANUARY 7. 2026.
- GRAPHIC SCALE
r> DUKE 500 0 500 1,000 DRAWING 2
ENERGY MONITORING LOCATIONS
CARD. (IN FEET) ENVIRONMENTAL CONTROLS MONITORING SEMIANNUAL REPORT
DRAWN BY: C. NORRIS DATE: 12/31/2025 SOUTH STARTER LANDFILL (3620-INDUS)
REVISED BY: C. NORRIS DATE: O1/13/2026 JULY 2025 THROUGH AUGUST 2025
CHECKED BY: C. SUTTELL DATE: 01/13/2026 ALLEN STEAM STATION
APPROVED BY: C. SUTTELL DATE: 01/13/2026
synTerra PROJECT MANAGER: C. SUTTELL GASTON COUNTY, NORTH CAROLINA
www.synterracorlD.com
G:\O ARCGIS PRO PROJECTS\DUKE ENERGY\ALLEN\2025\ENVIRONMENTALCONTROLSMONITORINGRPT\ECMR 2025.APRX

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
Tables

TABLE 1
LEAK DETECTION SYSTEM MONITORING RESULTS - SOUTH STARTER LANDFILL
ENVIRONMENTAL CONTROLS MONITORING SEMIANNUAL REPORT
SOUTH STARTER LANDFILL (PERMIT NO. 3620-INDUS)
JULY 2025 THROUGH AUGUST 2025
ALLEN STEAM STATION
DUKE ENERGY CAROLINAS, LLC, GASTON COUNTY, NORTH CAROLINA
ALN-SSLF-LSD1
MONTHLY
MONTHLY
TOTAL
AVERAGE
AVERAGE DAILY
AVERAGE DAILY
MONITORING
MONITORING
VOLUME
VOLUME
SSLF
DAILY
LEAKAGE RATE
LEAKAGE RATE
DURATION
TOTAL
PERIOD
(DAYS)
PUMPED
PUMPED
AREA
LEAKAGE
EXCEEDS IRLR:
EXCEEDS ALR:
COMMENTS
RAINFALL
(GALLONS)'
(GALLONS)'
2
(ACRES)
RATE
316 GPAD
421 GPAD
(INCHES)'
(GPAD)
(YES/NO)
(YES/NO)
LDS PUMP TOTALIZER
July 2025
31
2.04
181
5,629
22
0.27
NO
NO
--
Significant rainfall with little
August 2025
31
8.25
3369
,
8,998
4.94
NO
NO
waste in lace
Prepared by: HCC Checked by: BLP
NOTES:
' Data provided by Duke Energy Carolinas, LLC.
2 As presented in the Engineering and Facility Plan, Revision 1, Allen Steam Station, South Starter Landfill, Prepared by AECOM Technical Services of North Carolina, Inc., Dated: March 26, 2021.
-- no comments made
ALR- The Action Leakage Rate is 421 GPAD, as presented in the Engineering and Facility Plan - Revision 1 (AECOM, 2021).
GPAD - gallons per acre per day
IRLR- The Initial Response Leakage Rate is 316 GPAD, as presented in the Engineering and Facility Plan - Revision 1 (AECOM, 2021).
LDS - Leak Detection System
SSLF - South Starter Landfill

TABLE 2
LEACHATE ANALYTICAL RESULTS - AUGUST 27, 2025
ENVIRONMENTAL CONTROLS MONITORING SEMIANNUAL REPORT
JULY 2025 THROUGH AUGUST 2025
SOUTH STARTER LANDFILL (PERMIT NO. 3620-INDUS)
ALLEN STEAM STATION
DUKE ENERGY CAROLINAS, LLC, GASTON COUNTY, NORTH CAROLINA
Constituent
ALN SSLF-LCS1
Field Parameters
pH (S.U.)
6.5
Temperature (Deg C)
26
Specific Conductance (µmhos/cm)
339
Dissolved Oxygen (mg/L)
3.2
Oxidation -Reduction Potential (mV)
357
Turbidity (NTUs)
150.0
Laboratory Analyses
Antimony
2.12
Arsenic
16.8
Barium
163
Beryllium
0.551 J
Boron
102
Cadmium
0.086 J
Calcium (mg/L)
70.7
Chloride (mg/L)
3.4
Chromium
5.72
Cobalt
2.94
Copper
11.5
Fluoride (mg/L)
0.2
Iron
2240
Lead
4.83
Lithium
< 5
Magnesium (mg/L)
8.96
Manganese
45
Mercury
< 0.05
Molybdenum
127
Nickel
4.61
Nitrate (as nitrogen) (mg-N/L)
1.6
Selenium
68.4
Silver
< 2
Sulfate (mg/L)
150
Total Dissolved Solids (TDS) (mg/L)
348
Thallium
0.302 J
Vanadium
26.1
Zinc
5 J
Prepared by: HCC Checked by: BLP
Notes•
Analytical data presented in this table reflect the Duke Energy Biological Analytical Data Storage System (BASS) as of 10/06/2025.
Analytical results presented in micrograms per liter (µg/L) unless otherwise noted.
< - 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.
mg/L - milligrams per liter
mg-N/L - milligrams nitrogen per liter
mV - millivolts
NTUs - nephelometric turbidity units
S.U. - standard units

TABLE 3
CONSTRUCTION DRAIN OUTLET ANALYTICAL RESULTS - AUGUST 27, 2025
ENVIRONMENTAL CONTROLS MONITORING SEMIANNUAL REPORT
SOUTH STARTER LANDFILL (PERMIT NO. 3620-INDUS)
JULY 2025 THROUGH AUGUST 2025
ALLEN STEAM STATION
DUKE ENERGY CAROLINAS, LLC, GASTON COUNTY, NORTH CAROLINA
Constituent
ALN-SSLF-CD1B
Field Parameters
pH (S.U.)
5.5
Temperature (Deg C)
22
Specific Conductance (µmhos/cm)
193
Dissolved Oxygen (mg/L)
4.63
Oxidation -Reduction Potential (mV)
439
Turbidity (NTUs)
2.0
Laboratory Analyses
Antimony
< 1
Arsenic
< 1
Barium
243
Beryllium
< 1
Beryllium (dissolved)
< 1
Boron
634
Cadmium
0.054 J
Cadmium (dissolved)
0.068 J
Calcium (mg/L)
25.0
Chloride (mg/L)
61 J
Chromium
4.15
Chromium (dissolved)
4.87
Cobalt
1.11
Copper
0.838 J
Copper (dissolved)
1.12
Fluoride (mg/L)
< 0.1
Iron
9.1
Lead
< 1
Lead (dissolved)
< 1
Lithium
< 5
Magnesium (mg/L)
8.59
Manganese
47
Mercury
0.06
Molybdenum
< 1
Nickel
1.16
Nickel (dissolved)
1.26
Nitrate (as nitrogen) (mg-N/L)
0.16
Selenium
0.847 J
Silver
< 1
Silver (dissolved)
< 1
Page 1 of 2

TABLE 3
CONSTRUCTION DRAIN OUTLET ANALYTICAL RESULTS - AUGUST 27, 2025
ENVIRONMENTAL CONTROLS MONITORING SEMIANNUAL REPORT
SOUTH STARTER LANDFILL (PERMIT NO. 3620-INDUS)
JULY 2025 THROUGH AUGUST 2025
ALLEN STEAM STATION
DUKE ENERGY CAROLINAS, LLC, GASTON COUNTY, NORTH CAROLINA
Constituent
ALN-SSLF-CDiB
Laboratory Analyses (Continued)
Sulfate (mg/L)
24 J
Total Dissolved Solids (TDS) (mg/L)
204
Total Hardness
97.8
Thallium
0.052 J
Vanadium
0.622 J
Zinc
< 15
Zinc (dissolved)
6 J
Prepared by: HCC Checked by: BLP
NOTES:
Analytical data presented in this table reflect the Duke Energy Biological Analytical Data Storage System (BASS) as of 10/06/2025.
Analytical results presented in micrograms per liter (µg/L) unless otherwise noted.
<- 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.
mg/L - milligrams per liter
mg-N/L - milligrams nitrogen per liter
mV - millivolts
NTUs - nephelometric turbidity units
S.U. - standard units
Page 2 of 2

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
Appendix A
Field Sampling Forms

❑CAMA ❑CCR ❑ Landfill ❑ NPDES ❑CAP ❑ ASW ❑ LRB❑ SPECIAL STUDY
FIELD SAMPLING LOG
Site: A1�4 Well/SW ID: 95LF - C IDl P,
`r � NE
ERG�
Date: 8- Z 7- 2 �
GROUNDWATER SAMPLE ❑SURFACE WATER SAMPLE ❑ LEACHATE SAMPLE ❑ WLO ❑ WELL DEVELOPMENT w
FIELD STAFF: 60,
COMPANY: Q DUKE ENERGY
❑ OTHER:
WEATHER: ❑SUNNY ❑PARTLYCLOUDY ❑OVERCAST []RAIN [-]SNOW AIRTEMP: °F
FIELD METER TYPE/ SERIAL #: Yil ySL
TURBIDIMETER TYPE/ SERIAL M 0,6V
START PURGE TIME: (0 2- SAMPLE COLLECTION TIME: t U ZS _
PUMPITUBING INTAKE DEPTH: (ft) DEPTH TO WATER: g H (ft) MULT FACTOR *• 0.163 [*(radius/12)2'3.14.7.48]
WELL DIAMETER: (in) HEIGHT OF WC: - 00 WELL VOLUME: — (gal)
WELL DEPTH: - (ft) TOTAL VOLUME PURGED: 64-15`0' (gal)
TYPE OF PUMP:
Bladder
Peristaltic
12 Volt
Grundfos
Other ( )
PURGE METHOD:
SAMPLING METHOD:
i
PUMP SETTING:
P
R
p
o
t.,avrJ
L1 Tubin /Pump Inspected I (psi)I (sec) I (sec) I LOW FIOW 5amplino Stabilization Criteria
❑Good [Tubing Bad ❑Pump Bad ❑Changed/Cleaned ❑Correct Next Event PH t 0.1 standard unit
Additional Notes: Speck Conductance t 5% in pS/cm
• DO t 0.2 mg/L or 10% saturation
• Turbidity less than 10 NTUs
TIME
WATER
LEVEL
FLOW
RATE
VOLUME
REMOVED
TEMPERATURE
DO
SPECIFIC
CONDUCTANCE
PH
ORP
TURBIDITY
(FT)
(x.xx)
(mL/min)
W
(gallons OR mL)
(x.xx)
(IC)
W
(mg/L)
(x.xx)
(PS/CM)
(x)
(su)
(x.xx)
(mv)
W
(NTU)
(x.x)
Io;S
z5U
u.�a
23
N.`1
t9�
S.jK
K�
� u
toil
-
O SS
2-L
N.5
II2
-5t
gzli
(s
1�Li
2Sv
.`50
22
H,b�
1-1 3
S•SD
q3%
Z. Z
102'1
1.10
Z 2
K G1
1 1 3
S. o
't 31
2.0
PLEASE REFER TO THE BACK OF THIS SHEET IF THE CHART ABOVE IS FULL
IS REDEVELOPMENT NEEDED (>10 NTUS)? ❑ YES ❑ NO WERE ALL SAMPLES ON ICE WITHIN 15 MINUTES? EYES [INO
IS A TURBIDITY METER DUPLICATE REQUIRED? ❑YES NO IS THE LOCATION FIELD VEHICLE ACCESSIBLE?AYES ❑ NO
IS THE TURBIDITY METER DUPLICATE TAKEN, WITHIN 15%? ❑ YES ❑ NO DUPLICATE 1 (NTU) DUPLICATE 2 (NTU)
FINAL SAMPLE OBSERVATIONS:
Appearance: ea Cloudy Turbid Red/iron Film on Surface Sheen Fines Floc
ADDITIONAL NOTES:
WELL TAG
PROTECTIVE CASING
LOCK
DUST CA
I CONCRETE PAD
GOOD
BAD
NONE
GOOD
BAD
NONE
GOOD
BAD
NONE
GOOD
BAD
I NONE
GOOD
BAD
NONE
Version 1.3 Revised 07/15/2024 JAS

❑CAMA ❑CCR [—,] Landfill ❑ NPDES ❑CAP ❑ ASW ❑ LRB❑ SPECIAL STUDY
FIELD SAMPLING LOG
,,f� DUKE
* ENERGN
Site: Alb -A Well/SW ID: SSLF - LCS I Date: 6-07-Z'
❑GROUNDWATER SAMPLE [:]SURFACE WATER SAMPLE ❑j LEACHATE SAMPLE ❑ WLO [:]WELL DEVELOPMENT
FIELD STAFF: GYL
COMPANY: ❑j DUKE ENERGY
❑ OTHER:
WEATHER: []SUNNY []PARTLYCLOUDY []OVERCAST ❑RAIN ❑SNOW AIR TEMP: 'F
FIELD METER TYPE/ SERIAL #: 115104
TURBIDIMETER TYPE/ SERIAL #: owl,
START PURGE TIME: I U Z S SAMPLE COLLECTION TIME: to �0
PUMP/TUBING INTAKE DEPTH: — (ft) DEPTH TO WATER: (ft) MULT FACTOR': 0.163 [•(radius/12)2'3.t4 7.48]
WELL DIAMETER: _ (in) HEIGHT OF WC: (ft) WELL VOLUME: — (gal)
WELL DEPTH: (ft) TOTAL VOLUME PURGED: / U v (gal)
TYPE OF PUMP:
Bladder
Peristaltic
12 Volt
Grundfos
Other( )
PURGE METHOD:
SAMPLING METHOD:
PUMP SETTING:
❑ Tubin /Pump Inspected (psi)
❑Good [Tubing Bad []Pump BE ❑Changed/Cleaned ❑Correct Next Event
Additional Notes:
Low Flow Sampling Stabilization Criteria
• pH
• Specific Conductance
• DO
• Turbidity
f 0.1 standard unit
t 5% in NS/cm
f 0.2 mg/L or 10% saturation
less than 10 NTUs
TIME
WATER
LEVEL
FLOW
RATE
VOLUME
REMOVED
TEMPERATURE
DO
SPECIFIC
CONDUCTANCE
pH
ORP
TURBIDITY
(FT)
(x.xx)
(mUmin)
W
(gallons OR mL)
(x.xx)
(IC)
W
(mg/L)
(x.xx)
(PS/CM)
W
(su)
(x.xx)
(mv)
W
(NTU)
(x.x
�u28
—
Sum
lu_O
Z�,
o�
37
r5u)
PLEASE REFER TO THE BACK OF THIS SHEET IF THE CHART ABOVE IS FULL
IS REDEVELOPMENT NEEDED (>10 NTUS)? ❑ YES NO WERE ALL SAMPLES ON ICE WITHIN 15 MINUTES? YES NO
IS A TURBIDITY METER DUPLICATE REQUIRED? ❑YES ❑ A[I NO IS THE LOCATION FIELD VEHICLE ACCESSIBLE? YES ❑ NO
IS THE TURBIDITY METER DUPLICATE TAKEN, WITHIN 15%? ❑ YES ❑ NO DUPLICATE 1 (NTU) DUPLICATE 2 (NTU)
FINAL SAMPLE OBSERVATIONS:
Appearance: Clear Cloudy
ADDITIONAL NOTES:
ur i Red/iron Film on Surface Sheen Fines Floc
WELL TAG
PROTECTIVE CASING
LOCK
DUST CAP
CONCRETE PAD
GOOD
BAD
NONE
GOOD
BAD
NONE
GOOD
BAD
NONE
GOOD
BAD
NONE
GOOD
BAD
NONE
Version 1.3 Revised 07/15/2024 JAS

❑CAMA ❑CCR[�j Landfill ❑ NPDES ❑CAP ❑ ASW ❑ LRB❑ SPECIAL STUDY
Site: A&--i
FIELD SAMPLING LOG
Well/SW ID: SS LF - SW I
Date: 8- Z 7- ZS
DUKE
ENERGY
GROUNDWATER SAMPLE ❑SURFACE WATER SAMPLE ❑LECH AATE SAMPLE ❑WLO ❑ WELL DEVELOPMENT
FIELD STAFF: Cn WEATHER: ❑SUNNY ❑ PARTLY CLOUDY ❑ OVERCAST ❑ RAIN `C]S�j�QW AIR TEMP: 'F
COMPANY: DUKE ENERGY FIELD METER TYPE/ SERIAL #: 9' ``lab
❑ OTHER: TURBIDIMETER TYPE/ SERIAL #:_ CtQ-
START PURGE TIME: Il(/U SAMPLE COLLECTION TIME:
PUMP/TUBING INTAKE DEPTH: (ft) DEPTH TO WATER: (ft) MULT FACTOR *: 0.163 ['(radius/12)z'3.14'7.48)
WELL DIAMETER: (in) HEIGHT OF WC: (ft) WELL VOLUME: (gal)
WELL DEPTH: (ft) TOTAL VOLUME PURGED: (gal)
TYPE OF PUMP:
Bladder
Peristaltic
12 Volt
Grundfos
Other ( )
PURGE METHOD:
SAMPLING METHOD:
,
PUMP SETTING:
R °
❑ Tubing/Pump /Pump Inspected (P-0 (Sec (—)
❑Good [Tubing Bad []Pump Bad ❑Changed/Cleaned ❑Correct Next Event
Additional Notes:
Low How Jampling Stabilization Criteria
PH t 0.1 standard unit
Speck Conductance t 5% in NS/cm
DO f 0.2 mg/L or 10% saturation
Turbidity less than 10 NTUs
TIME
WATER
LEVEL
FLOW
RATE
VOLUME
REMOVED
TEMPERATURE
DO
SPECIFIC
CONDUCTANCE
pH
ORP
TURBIDITY
(FT)
(x.xx)
(mL/min)
(x)
(gallons OR mL)
(x.xx)
(°C)
W
(mg/L)
(x.xx)
(PS/CM)
(x)
--(Su)
(x.xx)
(mv)
(x)
(NTU)
(x.x
r LG/iJC RCrcm I V I ne tSAUK car I MI5 SHEET IF THE CHART ABOVE IS FULL
IS REDEVELOPMENT NEEDED (>10 NTUS)? ❑ YES NO WERE ALL SAMPLES ON ICE WITHIN 15 MINUTES? [:]YES ❑ NO
IS A TURBIDITY METER DUPLICATE REQUIRED? ❑YES ❑ NO IS THE LOCATION FIELD VEHICLE ACCESSIBLE? ❑YES;9�NO
IS THE TURBIDITY METER DUPLICATE TAKEN, WITHIN 15%? ❑ YES ❑ NO DUPLICATE 1 (NTU) DUPLICATE 2 (NTU)
FINAL SAMPLE OBSERVATIONS:
ADDITIONAL NOTES: Appearance: Clear Cloudy Turbid Redliron Film on Surface Sheen Fines Floc
WELL TAG
PROTECTIVE CASING
LOCK
DUST CAP
CONCRETE PAD
GOOD
BAD
NONE
GOOD
BAD
NONE
GOOD
BAD
NONE
GOOD
BAD
NONE
GOOD
BAD
NONE
version 1.3 Revised 07/15/2024 JAS

Environmental Controls Monitoring Semiannual Report July 2025 through August 2025
South Starter Landfill (Permit No. 3620-INDUS)
Appendix B
Laboratory Reports, Data Validation Checklists,
and Chain -of -Custody Forms

Data Validation Checklist
Facility/Siie
Allen Steam Station
State
INC
Location/Sample IDs
SSLF-CD16, SSLF-LCS1
Duke Central Lab
•
❑ Groundwater
❑ Surface Water
0 Other
/25080606 8/27/2025 8/28/2025 9/15/2025
References:
noSample
0 ❑
National Functional Guidelines for Organic/Inorganic Superfund Methods Data Review (USEPA 2020)
Guidance on Environmental Data Verification and Data Validation (USEPA 2002)
Radiochemical Data Verification and Validation (MARLAP Manual Volume I: Chapter 8, 2004)
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?
A
❑
a) 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 or sample receipt form?
0
❑
❑
a) Is the sample temperature upon receipt less than 6 degrees Celsius? If NO, then:
❑
❑
0
1) Was the presence of wet ice noted in the cooler? OR
❑
❑
0
IT) Were the samples collected less than two hours prior to receipt at the lab?
0
❑
3) Was the proper sample preservation used, confirmed, and documented on the Chain of Custody and/or sample receipt form?
El0
4) Are there any special notes, exceptions, and/or anomalies listed on the Chain of Custody, sample receipt form, or laboratory report?
El0
No
❑
❑
❑
NIA
O
❑
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 eAssurance/Quality
6) Was the holding time for preparation and/or analysis met for each parameter?
a) Total Alkalinity, Bicarbonate Alkalinity, and Carbonate Alkalinity: Analyzed within 14 days of collection
b) Bromide, Chloride, Fluoride, and Sulfate (Anions): Analyzed within 28 days of collection
c) Sulfide: Analyzed within 7 days of collection
❑
0
❑
0
❑
❑
❑
0
d) Total Organic Carbon (TOC) and/or Nitrate -Nitrite: Analyzed within 28 days of collection
e) Total Phosphorus (TP) and Dissolved Phosphorus: Analyzed within 28 days of collection
❑
❑
❑
21
f) Hexavalent Chromium and Dissolved Hexavalent Chromium: Analyzed within 24 hours (unpreserved) / 28 days (preserved) of collection
g) Mercury and Dissolved Mercury: Analyzed within 28 days of collection (preserved)
h) Total Metals and Dissolved Metals: Analyzed within 180 days of collection
1) Total Suspended Solids (TSS) and/or Total Dissolved Solids (TDS): Analyzed within 7 days of collection
0
❑
❑
0
❑
❑
0
❑
❑
❑
❑
21
j) Radionuclides: Analyzed within 180 days of collection
k) Methane: Analyzed within 14 days (preserved) / 7 days (unpreserved) of collection
1) Oil and Grease: Analyzed within 28 days of collection
❑
❑
21
❑
❑
0
❑
7) Are there any qualifiers assigned by the laboratory and if so, are the qualifier definitions provided?
❑
21
❑
8) Method Blank - Were any parameters detected in the laboratory method blank(s)?
❑
❑
0
a) If YES, were any target analyses detected in the samples at concentrations less than ten times the method blank concentration?
❑
0
❑
9) Laboratory Control Sample (LCS) - Were any parameters flagged by the lab as being outside the limits of control in the associated LCS?
❑
❑
21
a) If YES, was the parameter recovery less than 50 percent or greater than 150 percent?
❑
❑
0
b) Were the same parameters detected in the samples?
0
0
2
❑
❑
0
❑
❑
0
10) Matrix Spike Sample (MS/MSD) - Did the laboratory provide matrix spike results? If so, then:
a) Was the original sample spiked a project sample? If so, then:
b) Were any parameters flagged by the lab as being outside the limits of control in the associated matrix spike sample?

No N/A Batch !Assurance/Quality
❑
RI ❑ 11) laboratory Duplicate Sample -Did the laboratory provide lab duplicate sample results? If so, then:
❑
❑
a) Was the sample analyzed as a laboratory duplicate a project sample? If so, Then:
❑
❑
p b) Were any parameters flagged by the lab as being outside the limits of control in the laboratory duplicate sample?
❑
❑
p 12) Field Duplicate Sample - Is the relative percent difference between the parent and field duplicate sample results greater than 35 percent?
p
❑
13) Field/Equipment/Trip Blanks - Were any parameters detected in the associated field, equipment, and/or trip blanks?
ElIIIa)
If yes, were any target analytes detected in the samples at a concentration less than ten times the Field/Equipment/Trip Blank concentration?
p
❑
❑
14) Were initial and continuing calibration blank information within acceptable criteria per the lab report?
❑
0
El15)
Were any reporting limits for diluted, non -detect results greater than the screening criteria?
❑ ❑ p 16) Radionuclides: Are quality control sample results provided?
❑ ❑ 0 a) Are any results flagged or qualified?
❑ ❑ 0 b) Are Uncertainty, Minimum Detectable Concentration (MDC), and Tracer and/or Carrier % Recoveries provided for each sample?
11111111111111100
Lab Qualifiers:
J-Analyte detected above the MDL, but below the RL; analyte concentration should be considered an estimate.
M4 -The spike recovery value was unusable since the analyte concentration in the sample was disproportionate to the spike level; the associated LCS recovery was acceptable.
U-Analyte was analyzed for, but not detected above the MDL.
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 for but not detected above the minimum detectable concentration (MDC) or method detection limit (MDL).
B -Target analyte detected in the method blank and in the sample at a concentration less than lox the blank concentration.
• Chloride and Sulfate MS and/or MSD % recoveries low for SSLF-CDlB (M4).
• Nitrate as N (0.01 mg-N/L) was detected in the Field Blank; Nitrate as N was not detected in the samples at concentrations less than lox the blank concentration.
Review Determination: 0 Usable ❑ Usable with Required Actions ❑ Unusable
Initials/Signatures: Date:
Data Quality Reviewer REB 9/25/2025
Technical Lead cis 9/25/2025

DUKE Analytical Laboratory Page 1 of 18
ENERGY
Order Number:
Project Name:
Task Code:
Customer Name(s):
Customer Address:
Lab Contact:
Report Authorized By:
(Signature)
Program Comments:
13339 Hagers Ferry Road
Huntersville, NC 28078-7929
McGuire Nuclear Complex - MG03A2
Phone:[phone] Fax:[phone]
Order Summary Report
J25080606
ALLEN - SOUTH STARTER LANDFILL
LF
C Murphy, B Moeller, D Obrien, J Stowe,Connor Z
Allen Steam Station
253 Plant Allen Road
Belmont, NC 28012
Peggy Kendall
e
Pegg�dall
Phone: [phone]
1�;_ &V. d4sLtA ate:
Please contact the Program Manager (Peggy Kendall) with any questions regarding this report.
Data Flags & Calculations:
9/15/2025
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:
Collection
Sample ID Plant/Station Date and Time
2025021778
ALLEN 27-Aug-25 10:25 AM
2025021780
ALLEN 27-Aug-25 10:30 AM
2025021781
ALLEN 27-Aug-25 10:00 AM
3 Total Samples
Page 2 of 18
Collected By Sample Description
Connor Zahora
ALN_SSLF-CD1 B
Connor Zahora
ALN_SSLF-LCS1
Connor Zahora
ALN FB-20250827-1000

Page 3 of 18
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:
❑d Job Summary Report
❑d 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: 9/15/2025

Certificate of Laboratory Analysis Page 4 of 18
This report shall not be reproduced, except in full.
Order # J25080606
Site: ALN SSLF-CD1B Sample #: 2025021778
Collection Date: 08/27/2025 10:25 AM Loc code: ALN SSLF-CD1B Matrix: GW RCRA
Analyte
Result
Units
Qualifiers RDL
MDL
INORGANIC IONS BY IC - Q25080531
Chloride
61
mg/L
M4 1
0.015
Fluoride
0.04 U
mg/L
0.1
0.04
Nitrate
0.73
mg/L
0.1
0.04
Nitrate as N
0.16
mg-N/L
0.023
0.002
Sulfate
24
mg/L
M4 1
0.041
MERCURY (COLD VAPOR) IN WATER - Q25090047
Mercury (Hg)
0.06
ug/L
0.05
0.01
TOTAL RECOVERABLE METALS BY ICP (DISSOLVED)
- Q25080550
Zinc (Zn)
0.006 J
mg/L
0.015
0.0011
TOTAL RECOVERABLE METALS BY ICP - Q25080553
Barium (Ba)
0.243
mg/L
0.005
0.0011
Boron (B)
0.634
mg/L
0.05
0.0046
Calcium (Ca)
25.0
mg/L
0.05
0.0124
Iron (Fe)
0.009 J
mg/L
0.01
0.0033
Lithium (Li)
0.0027 U
mg/L
0.005
0.0027
Magnesium (Mg)
8.59
mg/L
0.02
0.0039
Manganese (Mn)
0.047
mg/L
0.005
0.0007
Total Hardness (Ca and Mg)
97.9
mg/L
0.19
(CaCO3)
Zinc (Zn)
0.0011 U
mg/L
0.015
0.0011
TOTAL RECOVERABLE METALS BY ICP-MS (DISSOLVED) - Q25080559
Beryllium (Be)
0.3106 U
ug/L
1
0.3106
Cadmium (Cd)
0.068 J
ug/L
1
0.0403
Chromium (Cr)
4.87
ug/L
1
0.2894
Copper (Cu)
1.12
ug/L
1
0.1994
Lead (Pb)
0.0579 U
ug/L
1
0.0579
Nickel (Ni)
1.26
ug/L
1
0.1004
Silver (Ag)
0.0521 U
ug/L
1
0.0521
DF
Method
Analysis Date/Time
Analyst
10
EPA 9056A
08/28/2025 10:41
BGN9034
1
EPA 9056A
08/28/2025 10:41
BGN9034
1
EPA 9056A
08/28/2025 10:41
BGN9034
1
EPA 9056A
08/28/2025 10:41
BGN9034
10
EPA 9056A
08/28/2025 10:41
BGN9034
1
EPA 7470A
09/03/2025 11:52
SNEGLIA
1
SW 601OD
09/02/2025 11:57
DDAUZVA
1
SW 601OD
09/02/2025 13:33
DDAUZVA
1
SW 601OD
09/02/2025 13:33
DDAUZVA
1
SW 601OD
09/02/2025 13:33
DDAUZVA
1
SW 601OD
09/02/2025 13:33
DDAUZVA
1
SW 601OD
09/02/2025 13:33
DDAUZVA
1
SW 601OD
09/02/2025 13:33
DDAUZVA
1
SW 601OD
09/02/2025 13:33
DDAUZVA
1
SW 6010D
09/02/2025 13:33
DDAUZVA
1
SW 601OD
09/02/2025 13:33
DDAUZVA
1
SW 6020B
09/03/2025 14:17
MHALL3
1
SW 6020B
09/03/2025 14:17
MHALL3
1
SW 6020E
09/03/2025 14:17
MHALL3
1
SW 6020B
09/03/2025 14:17
MHALL3
1
SW 6020B
09/03/2025 14:17
MHALL3
1
SW 6020E
09/03/2025 14:17
MHALL3
1
SW 6020B
09/03/2025 14:17
MHALL3

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J25080606
Site: ALN SSLF-CD1B
Collection Date: 08/27/2025 10:25 AM Loc code: ALN SSLF-CD1B
Analyte
Result
Units Qualifiers
RDL
MDL
DF
TOTAL RECOVERABLE METALS BY ICP-MS - Q25080563
Antimony (Sb)
0.1259 U
ug/L
1
0.1259
1
Arsenic (As)
0.168 U
ug/L
1
0.168
1
Beryllium (Be)
0.3106 U
ug/L
1
0.3106
1
Cadmium (Cd)
0.054 J
ug/L
1
0.0403
1
Chromium (Cr)
4.15
ug/L
1
0.2894
1
Cobalt (Co)
1.11
ug/L
1
0.1287
1
Copper (Cu)
0.838 J
ug/L
1
0.1994
1
Lead (Pb)
0.0579 U
ug/L
1
0.0579
1
Molybdenum (Mo)
0.1066 U
ug/L
1
0.1066
1
Nickel (Ni)
1.16
ug/L
1
0.1004
1
Selenium (Se)
0.847 J
ug/L
1
0.2052
1
Silver (Ag)
0.0521 U
ug/L
1
0.0521
1
Thallium (TI) Low Level
0.052 J
ug/L
0.2
0.0326
1
Vanadium (V)
0.622 J
ug/L
1
0.1119
1
TOTAL DISSOLVED SOLIDS - Q25090020
TDS
204
mg/L
25
25
1
Sample #: 2025021778
Matrix: GW RCRA
Page 5 of 18
Method
Analysis Date/Time
Analyst
SW 6020B
09/03/2025 15:15
MHALL3
SW 6020B
09/03/2025 15:15
MHALL3
SW 6020E
09/03/2025 15:15
MHALL3
SW 6020B
09/03/2025 15:15
MHALL3
SW 6020B
09/03/2025 15:15
MHALL3
SW 6020E
09/03/2025 15:15
MHALL3
SW 6020B
09/03/2025 15:15
MHALL3
SW 6020E
09/03/2025 15:15
MHALL3
SW 6020B
09/03/2025 15:15
MHALL3
SW 6020E
09/03/2025 15:15
MHALL3
SW 6020B
09/03/2025 15:15
MHALL3
SW 6020E
09/03/2025 15:15
MHALL3
SW 6020B
09/03/2025 15:15
MHALL3
SW 6020E
09/03/2025 15:15
MHALL3
SM2540C
09/02/202515:05
GBOLIN

Certificate of Laboratory Analysis Page 6 of 18
This report shall not be reproduced, except in full.
Order # J25080606
Site: ALN SSLF-LCS1 Sample #: 2025021780
Collection Date: 08/27/2025 10:30 AM Loc code: ALN SSLF-LCS1 Matrix: GW RCRA
Analyte Result Units Qualifiers RDL MDL DF
INORGANIC IONS BY IC - Q25080531
Chloride 3.4 mg/L
Fluoride 0.20 mg/L
Nitrate 7.2 mg/L
Nitrate as N 1.6 mg-N/L
Sulfate 150 mg/L
MERCURY (COLD VAPOR) IN WATER - Q25090047
Mercury (Hg) 0.01 U ug/L
TOTAL RECOVERABLE METALS BY ICP - Q25080553
Barium (Ba)
0.163
mg/L
Boron (B)
0.102
mg/L
Calcium (Ca)
70.7
mg/L
Iron (Fe)
2.24
mg/L
Lithium (Li)
0.0027 U
mg/L
Magnesium (Mg)
8.96
mg/L
Manganese (Mn)
0.045
mg/L
Zinc (Zn)
0.005 J
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS -
Q25080563
Antimony (Sb)
2.12
ug/L
Arsenic (As)
16.8
ug/L
Beryllium (Be)
0.551 J
ug/L
Cadmium (Cd)
0.086 J
ug/L
Chromium (Cr)
5.72
ug/L
Cobalt (Co)
2.94
ug/L
Copper (Cu)
11.5
ug/L
Lead (Pb)
4.83
ug/L
Molybdenum (Mo)
127
ug/L
Nickel (Ni)
4.61
ug/L
Selenium (Se)
68.4
ug/L
Silver (Ag)
0.0521 U
ug/L
Thallium (TI) Low Level
0.302 J
ug/L
Vanadium (V)
26.1
ug/L
TOTAL DISSOLVED SOLIDS -
025090020
TDS 348 mg/L
Method Analysis Date/Time Analyst
0.1
0.015
1
EPA 9056A
08/28/2025 09:38
BGN9034
0.1
0.04
1
EPA 9056A
08/28/2025 09:38
BGN9034
0.1
0.04
1
EPA 9056A
08/28/2025 09:38
BGN9034
0.023
0.002
1
EPA 9056A
08/28/2025 09:38
BGN9034
2.5
0.041
25
EPA 9056A
08/28/2025 09:38
BGN9034
0.05
0.01
1
EPA 7470A
09/03/2025 11:54
SNEGLIA
0.005
0.0011
1
SW 601OD
09/02/2025 13:56
DDAUZVA
0.05
0.0046
1
SW 601OD
09/02/2025 13:56
DDAUZVA
0.05
0.0124
1
SW 601OD
09/02/2025 13:56
DDAUZVA
0.01
0.0033
1
SW 601OD
09/02/2025 13:56
DDAUZVA
0.005
0.0027
1
SW 601OD
09/02/2025 13:56
DDAUZVA
0.02
0.0039
1
SW 601OD
09/02/2025 13:56
DDAUZVA
0.005
0.0007
1
SW 601OD
09/02/2025 13:56
DDAUZVA
0.015
0.0011
1
SW 601OD
09/02/2025 13:56
DDAUZVA
2
0.1259
2
SW 6020B
09/10/2025 13:07
MHALL3
2
0.168
2
SW 6020B
09/10/2025 13:07
MHALL3
2
0.3106
2
SW 6020E
09/10/2025 13:07
MHALL3
2
0.0403
2
SW 6020E
09/10/2025 13:07
MHALL3
2
0.2894
2
SW 6020B
09/10/2025 13:07
MHALL3
2
0.1287
2
SW 6020E
09/10/2025 13:07
MHALL3
2
0.1994
2
SW 6020B
09/10/2025 13:07
MHALL3
2
0.0579
2
SW 6020E
09/10/2025 13:07
MHALL3
2
0.1066
2
SW 6020E
09/10/2025 13:07
MHALL3
2
0.1004
2
SW 6020B
09/10/2025 13:07
MHALL3
2
0.2052
2
SW 6020B
09/10/2025 13:07
MHALL3
2
0.0521
2
SW 6020E
09/10/2025 13:07
MHALL3
0.4
0.0326
2
SW 6020B
09/10/2025 13:07
MHALL3
2
0.1119
2
SW 6020E
09/10/2025 13:07
MHALL3
50
25
1
SM2540C
09/02/202515:05
GBOLIN

Certificate of Laboratory Analysis Page 7 of 18
This report shall not be reproduced, except in full.
Order # J25080606
Site: ALN FB-20250827-1000 Field Blank Sample #: 2025021781
Collection Date: 08/27/2025 10:00 AM Loc code: ALN QA Matrix: GW RCRA
Analyte Result Units Qualifiers RDL MDL DF
INORGANIC IONS BY IC - Q25080531
Chloride
0.015 U
mg/L
Fluoride
0.04 U
mg/L
Nitrate
0.04 U
mg/L
Nitrate as N
0.01 J
mg-N/L
Sulfate
0.041 U
mg/L
MERCURY (COLD VAPOR) IN
WATER - Q25090047
Mercury (Hg)
0.01 U
ug/L
TOTAL RECOVERABLE METALS BY ICP - Q25080553
Barium (Ba)
0.0011 U
mg/L
Boron (B)
0.0046 U
mg/L
Calcium (Ca)
0.0124 U
mg/L
Iron (Fe)
0.0033 U
mg/L
Lithium (Li)
0.0027 U
mg/L
Magnesium (Mg)
0.0039 U
mg/L
Manganese (Mn)
0.0007 U
mg/L
Zinc (Zn)
0.0011 U
mg/L
TOTAL RECOVERABLE METALS BY ICP-MS -
Q25080563
Antimony (Sb)
0.1259 U
ug/L
Arsenic (As)
0.168 U
ug/L
Beryllium (Be)
0.3106 U
ug/L
Cadmium (Cd)
0.0403 U
ug/L
Chromium (Cr)
0.2894 U
ug/L
Cobalt (Co)
0.1287 U
ug/L
Copper (Cu)
0.1994 U
ug/L
Lead (Pb)
0.0579 U
ug/L
Molybdenum (Mo)
0.1066 U
ug/L
Nickel (Ni)
0.1004 U
ug/L
Selenium (Se)
0.2052 U
ug/L
Silver (Ag)
0.0521 U
ug/L
Thallium (TI) Low Level
0.0326 U
ug/L
Vanadium (V)
0.1119 U
ug/L
Method Analysis Date/Time Analyst
0.1
0.015
1
EPA 9056A
08/28/2025 09:07
BGN9034
0.1
0.04
1
EPA 9056A
08/28/2025 09:07
BGN9034
0.1
0.04
1
EPA 9056A
08/28/2025 09:07
BGN9034
0.023
0.002
1
EPA 9056A
08/28/2025 09:07
BGN9034
0.1
0.041
1
EPA 9056A
08/28/2025 09:07
BGN9034
0.05
0.01
1
EPA 7470A
09/03/2025 11:56
SNEGLIA
0.005
0.0011
1
SW 601OD
09/02/2025 12:53
DDAUZVA
0.05
0.0046
1
SW 601OD
09/02/2025 12:53
DDAUZVA
0.05
0.0124
1
SW 601OD
09/02/2025 12:53
DDAUZVA
0.01
0.0033
1
SW 601OD
09/02/2025 12:53
DDAUZVA
0.005
0.0027
1
SW 601OD
09/02/2025 12:53
DDAUZVA
0.02
0.0039
1
SW 601OD
09/02/2025 12:53
DDAUZVA
0.005
0.0007
1
SW 601OD
09/02/2025 12:53
DDAUZVA
0.015
0.0011
1
SW 601OD
09/02/2025 12:53
DDAUZVA
1
0.1259
1
SW 6020B
09/03/2025 15:23
MHALL3
1
0.168
1
SW 6020B
09/03/2025 15:23
MHALL3
1
0.3106
1
SW 6020E
09/03/2025 15:23
MHALL3
1
0.0403
1
SW 6020E
09/03/2025 15:23
MHALL3
1
0.2894
1
SW 6020B
09/03/2025 15:23
MHALL3
1
0.1287
1
SW 6020E
09/03/2025 15:23
MHALL3
1
0.1994
1
SW 6020B
09/03/2025 15:23
MHALL3
1
0.0579
1
SW 6020E
09/03/2025 15:23
MHALL3
1
0.1066
1
SW 6020E
09/03/2025 15:23
MHALL3
1
0.1004
1
SW 6020B
09/03/2025 15:23
MHALL3
1
0.2052
1
SW 6020B
09/03/2025 15:23
MHALL3
1
0.0521
1
SW 6020E
09/03/2025 15:23
MHALL3
0.2
0.0326
1
SW 6020B
09/03/2025 15:23
MHALL3
1
0.1119
1
SW 6020E
09/03/2025 15:23
MHALL3

Certificate of Laboratory Analysis Page 8 of 18
This report shall not be reproduced, except in full.
Order # J25080606
Qualifiers:
J Analyte detected above the MDL, but below the RL. Analyte concentration should be considered an estimate.
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 Page 9 of 18
This report shall not be reproduced, except in full.
Order # J25080606
Level II QC Summary
Q25080531 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
0.015
0.1
< MDL
Fluoride
0
0
mg/L
1
0.04
0.1
< MDL
Nitrate
0
0
mg/L
1
0.04
0.1
< MDL
Sulfate
0
0
mg/L
1
0.041
0.1
< MDL
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Chloride
5.25
5.25
mg/L
1
0.015
5
105
80
120
Fluoride
4.97
4.97
mg/L
1
0.04
5
99.5
80
120
Nitrate
5.3
5.3
mg/L
1
0.04
5
106
80
120
Sulfate
5.18
5.18
mg/L
1
0.041
5
104
80
120
Parent Sample:
J25080606 -- 2025021778
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Chloride
6.29
62.9
mg/L
10
0.015
5
37.8
80
120
Fluoride
5
5
mg/L
1
0.04
5
99.4
80
120
Nitrate
5.76
5.76
mg/L
1
0.04
5
101
80
120
Sulfate
2.74
27.4
mg/L
10
0.041
5
75.4
80
120
Parent Sample:
J25080606 -- 2025021778
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
RPD
Chloride
6.41
64.1
mg/L
10
0.015
5
61.4
80
120
1.86
Fluoride
5.04
5.04
mg/L
1
0.04
5
100
80
120
0.677
Nitrate
5.76
5.76
mg/L
1
0.04
5
101
80
120
0.104
Sulfate
2.79
27.9
mg/L
10
0.041
5
85.6
80
120
1.84
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.
Qualifier
Qualifier
Qualifier
M4
M4
Qualifier
M4

Certificate of Laboratory Analysis Page 10 of 18
This report shall not be reproduced, except in full.
Order # J25080606
Level II QC Summary
Q25090047 HG 7470 MERCURY (COLD VAPOR) IN WATER
Blank # 1
Parameter
Measured
Final
Mercury (Hg)
-0.01
-0.01
Blank # 2
Parameter
Measured
Final
Mercury (Hg)
-0.007
-0.007
Blank # 3
Parameter
Measured
Final
Mercury (Hg)
0
0
LCS # 1
Parameter
Measured
Final
Mercury (Hg)
2.14
2.14
LCS # 2
Parameter
Measured
Final
Mercury (Hg)
2.2
2.2
MS # 1
Parameter
Measured
Final
Mercury (Hg)
1.05
1.05
MSD # 1
Parameter
Measured
Final
Mercury (Hg)
1.05
1.05
MS # 2
Parameter
Measured
Final
Mercury (Hg)
1.01
1.01
MSD # 2
Parameter
Measured
Final
Mercury (Hg)
1.04
1.04
MS # 3
Parameter
Measured
Final
Mercury (Hg)
1.05
1.05
MSD # 3
Parameter
Measured
Final
Mercury (Hg)
1.05
1.05
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
107
85 115
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
ug/L
1
0.01
2
110
85 115
Parent Sample:
J25080154 -- 2025019728
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
ug/L
1
0.01
1
105
75 125
Parent Sample:
J25080154 -- 2025019728
Units
Dil
MDL
Spike
% Recover v
LCL UCL RPD
Qualifier
ug/L
1
0.01
1
105
75 125 0.381
Parent Sample:
J25080489 -- 2025021200
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
ug/L
1
0.01
1
101
75 125
Parent Sample:
J25080489 -- 2025021200
Units
Dil
MDL
Spike
% Recovery
LCL UCL RPD
Qualifier
ug/L
1
0.01
1
104
75 125 2.44
Parent Sample:
J25080489 -- 2025021210
Units
Dil
MDL
Spike
% Recovery
LCL UCL
Qualifier
ug/L
1
0.01
1
105
75 125
Parent Sample:
J25080489 -- 2025021210
Units
Dil
MDL
Spike
% Recovery
LCL UCL RPD
Qualifier
ug/L
1
0.01
1
105
75 125 0.0954

Certificate of Laboratory Analysis Page 11 of 18
This report shall not be reproduced, except in full.
Order # J25080606
Level II QC Summary
Q25080550 ICP_DIS_TRM TOTAL RECOVERABLE METALS BY ICP (DISSOLVED)
Blank # 1
LCS # 1
Parameter Measured Final
Zinc (Zn)-0.00315-0.00315
Parameter Measured Final
Zinc (Zn) 4.8 4.8
LCSD # I
Parameter Measured Final
Zinc (Zn) 4.85 4.85
Units Dil MDL RDL Relative Concentration
mg/L 1 0.0011 0.015 < MDL
Units Dil MDL Spike % Recovery LCL UCL
mg/L 1 0.0011 5 96.1 80 120
Units Dil MDL Spike % Recovery LCL UCL
mg/L 1 0.0011 5 97 80 120
Qualifier
Qualifier
RPD Qualifier
0.912

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J25080606
Level II QC Summary
Q25080553 ICP_TRM TOTAL RECOVERABLE METALS BY iCP
Blank # 1
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Barium (Ba)
-0.000002
-0.000002
mg/L
1
0.0011
0.005
< MDL
Boron (B)
-0.005
-0.005
mg/L
1
0.0046
0.05
< MDL
Calcium (Ca)
0.00635
0.00635
mg/L
1
0.0124
0.05
< MDL
Iron (Fe)
-0.000567
-0.000567
mg/L
1
0.0033
0.01
< MDL
Lithium (Li)
-0.00641
-0.00641
mg/L
1
0.0027
0.005
< MDL
Magnesium (Mg)
-0.000174
-0.000174
mg/L
1
0.0039
0.02
< MDL
Manganese (Mn)
-0.00103
-0.00103
mg/L
1
0.0007
0.005
< MDL
Zinc (Zn)
-0.0075
-0.0075
mg/L
1
0.0011
0.015
< MDL
LCS # 1
Page 12 of 18
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Barium (Ba)
4.82
4.82
mg/L
1
0.0011
5
96.3
80
120
Boron (B)
4.84
4.84
mg/L
1
0.0046
5
93
80
120
Calcium (Ca)
4.67
4.67
mg/L
1
0.0124
5
93.4
80
120
Iron (Fe)
4.84
4.84
mg/L
1
0.0033
5
96.7
80
120
Lithium (Li)
4.88
4.88
mg/L
1
0.0027
5
97.6
80
120
Magnesium (Mg)
4.96
4.96
mg/L
1
0.0039
5
100
80
120
Manganese (Mn)
4.99
4.99
mg/L
1
0.0007
5
99.9
80
120
Zinc (Zn)
4.87
4.87
mg/L
1
0.0011
5
97.3
80
120
MS # 1
Parent Sample:
J25080154
-- 2025019728
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recover v
LCL
UCL
Barium (Ba)
4.89
4.89
mg/L
1
0.0011
5
96.8
75
125
Boron (B)
4.83
4.83
mg/L
1
0.0046
5
93.2
75
125
Calcium (Ca)
12.5
12.5
mg/L
1
0.0124
5
98
75
125
Iron (Fe)
4.84
4.84
mg/L
1
0.0033
5
96.8
75
125
Lithium (Li)
4.87
4.87
mg/L
1
0.0027
5
97.4
75
125
Magnesium (Mg)
6.96
6.96
mg/L
1
0.0039
5
102
75
125
Manganese (Mn)
5.01
5.01
mg/L
1
0.0007
5
100
75
125
Zinc (Zn)
4.85
4.85
mg/L
1
0.0011
5
96.9
75
125
MSD # 1
Parent Sample:
J25080154
-- 2025019728
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
RPD
Barium (Ba)
4.86
4.86
mg/L
1
0.0011
5
96.3
75
125
0.533
Boron (B)
4.85
4.85
mg/L
1
0.0046
5
93.3
75
125
3.49
Calcium (Ca)
12.6
12.6
mg/L
1
0.0124
5
101
75
125
1.17
Iron (Fe)
4.86
4.86
mg/L
1
0.0033
5
97.1
75
125
0.309
Lithium (Li)
4.87
4.87
mg/L
1
0.0027
5
97.4
75
125
0
Magnesium (Mg)
6.97
6.97
mg/L
1
0.0039
5
101
75
125
2.62
Manganese (Mn)
5.01
5.01
mg/L
1
0.0007
5
100
75
125
0.02
Qualifier
Qualifier
Qualifier
Qualifier

Certificate of Laboratory Analysis Page 13 of 18
This report shall not be reproduced, except in full.
Order # J25080606
Level II QC Summary
Q25080553 ICP_TRM TOTAL RECOVERABLE METALS BY ICP
MSD # 1 Parent Sample: J25080154 -- 2025019728
Parameter Measured Final Units Dil MDL Spike % Recovery LCL UCL RPD Qualifier
Zinc (Zn) 4.86 4.86 mg/L 1 0.0011 5 97.1 75 125 0.206

Certificate of Laboratory Analysis Page 14 of 18
This report shall not be reproduced, except in full.
Order # J25080606
Level II QC Summary
Q25080559 IMS_DIS_TRM TOTAL RECOVERABLE METALS BY ICP-MS (DISSOLVED)
Blank # 1
LCS # 1
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Qualifier
Beryllium (Be)
-0.008
-0.008
ug/L
1
0.3106
1
< MDL
Cadmium (Cd)
0.008
0.008
ug/L
1
0.0403
1
< MDL
Chromium (Cr)
0.032
0.032
ug/L
1
0.2894
1
< MDL
Copper (Cu)
0.01
0.01
ug/L
1
0.1994
1
< MDL
Lead (Pb)
0
0
ug/L
1
0.0579
1
< MDL
Nickel (Ni)
0.005
0.005
ug/L
1
0.1004
1
< MDL
Silver (Ag)
0.006
0.006
ug/L
1
0.0521
1
< MDL
Parameter
Measured
Final
Units
Dil
MDL
S ike
% Recovery
LCL
UCL Qualifier
Beryllium (Be)
50.2
50.2
ug/L
1
0.3106
50
100
80
120
Cadmium (Cd)
48.5
48.5
ug/L
1
0.0403
50
97
80
120
Chromium (Cr)
47.4
47.4
ug/L
1
0.2894
50
94.8
80
120
Copper (Cu)
48.9
48.9
ug/L
1
0.1994
50
97.8
80
120
Lead (Pb)
45.6
45.6
ug/L
1
0.0579
50
91.3
80
120
Nickel (Ni)
48.1
48.1
ug/L
1
0.1004
50
96.3
80
120
Silver (Ag)
47.8
47.8
ug/L
1
0.0521
50
95.6
80
120
LCSD # 1
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
RPD Qualifier
Beryllium (Be)
51.6
51.6
ug/L
1
0.3106
50
103
80
120
2.76
Cadmium (Cd)
49.5
49.5
ug/L
1
0.0403
50
99
80
120
2.07
Chromium (Cr)
47.9
47.9
ug/L
1
0.2894
50
95.8
80
120
0.978
Copper (Cu)
49.6
49.6
ug/L
1
0.1994
50
99.2
80
120
1.43
Lead (Pb)
46.8
46.8
ug/L
1
0.0579
50
93.6
80
120
2.55
Nickel (Ni)
48.9
48.9
ug/L
1
0.1004
50
97.8
80
120
1.59
Silver (Ag)
48.6
48.6
ug/L
1
0.0521
50
97.2
80
120
1.7

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J25080606
Level II QC Summary
Q25080563 IMS_TRM TOTAL RECOVERABLE METALS BY ICP-MS
Blank # 1
Parameter
Measured
Final
Units
Dil
MDL
RDL
Relative Concentration
Antimony (Sb)
-0.003
-0.003
ug/L
1
0.1259
1
< MDL
Arsenic (As)
0.014
0.014
ug/L
1
0.168
1
< MDL
Beryllium (Be)
0.003
0.003
ug/L
1
0.3106
1
< MDL
Cadmium (Cd)
0.001
0.001
ug/L
1
0.0403
1
< MDL
Chromium (Cr)
0.017
0.017
ug/L
1
0.2894
1
< MDL
Cobalt (Co)
0.001
0.001
ug/L
1
0.1287
1
< MDL
Copper (Cu)
0.085
0.085
ug/L
1
0.1994
1
< MDL
Lead (Pb)
0.001
0.001
ug/L
1
0.0579
1
< MDL
Molybdenum (Mo)
0.011
0.011
ug/L
1
0.1066
1
< MDL
Nickel (Ni)
0.005
0.005
ug/L
1
0.1004
1
< MDL
Selenium (Se)
0.002
0.002
ug/L
1
0.2052
1
< MDL
Silver (Ag)
0.002
0.002
ug/L
1
0.0521
1
< MDL
Thallium (TI) Low Level
0.006
0.006
ug/L
1
0.0326
0.2
< MDL
Vanadium (V)
0.01
0.01
ug/L
1
0.1119
1
< MDL
LCS # 1
Page 15 of 18
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recover v
LCL
UCL
Antimony (Sb)
50.9
50.9
ug/L
1
0.1259
50
102
80
120
Arsenic (As)
48.8
48.8
ug/L
1
0.168
50
97.6
80
120
Beryllium (Be)
48.9
48.9
ug/L
1
0.3106
50
97.8
80
120
Cadmium (Cd)
48.5
48.5
ug/L
1
0.0403
50
97.1
80
120
Chromium (Cr)
47.2
47.2
ug/L
1
0.2894
50
94.5
80
120
Cobalt (Co)
49.6
49.6
ug/L
1
0.1287
50
99.3
80
120
Copper (Cu)
48.9
48.9
ug/L
1
0.1994
50
97.7
80
120
Lead (Pb)
49.5
49.5
ug/L
1
0.0579
50
99
80
120
Molybdenum (Mo)
49.5
49.5
ug/L
1
0.1066
50
99
80
120
Nickel (Ni)
49.2
49.2
ug/L
1
0.1004
50
98.3
80
120
Selenium (Se)
48.6
48.6
ug/L
1
0.2052
50
97.3
80
120
Silver (Ag)
48.3
48.3
ug/L
1
0.0521
50
96.7
80
120
Thallium (TI) Low Level
48.2
48.2
ug/L
1
0.0326
50
96.3
80
120
Vanadium (V)
47.9
47.9
ug/L
1
0.1119
50
95.8
80
120
MS # 1
Parent Sample:
J25080154
-- 2025019729
Parameter
Measured
Final
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Antimony (Sb)
25.6
51.1
ug/L
2
0.1259
50
101
75
125
Arsenic (As)
27.6
55.2
ug/L
2
0.168
50
106
75
125
Beryllium (Be)
22.9
45.7
ug/L
2
0.3106
50
91.4
75
125
Cadmium (Cd)
25.6
51.1
ug/L
2
0.0403
50
102
75
125
Chromium (Cr)
23.6
47.2
ug/L
2
0.2894
50
93.8
75
125
Cobalt (Co)
36.7
73.4
ug/L
2
0.1287
50
102
75
125
Qualifier
Qualifier
Qualifier

Certificate of Laboratory Analysis
This report shall not be reproduced, except in full.
Order # J25080606
Level II QC Summary
Q25080563 IMS_TRM TOTAL RECOVERABLE METALS BY ICP-MS
MS # 1
Parameter
Measured
Final
Units
Dil
MDL
Spike
Copper (Cu)
26.1
52.1
ug/L
2
0.1994
50
Lead (Pb)
27.1
54.3
ug/L
2
0.0579
50
Molybdenum (Mo)
121
243
ug/L
2
0.1066
50
Nickel (Ni)
46.8
93.7
ug/L
2
0.1004
50
Selenium (Se)
31.8
63.6
ug/L
2
0.2052
50
Silver (Ag)
24.4
48.8
ug/L
2
0.0521
50
Thallium (TI) Low Level
23.7
47.4
ug/L
2
0.0326
50
Vanadium (V)
24.7
49.5
ug/L
2
0.1119
50
MSD # 1
Parameter
Measured
Final
Units
Dil
MDL
Spike
Antimony (Sb)
25.9
51.8
ug/L
2
0.1259
50
Arsenic (As)
27.9
55.9
ug/L
2
0.168
50
Beryllium (Be)
23.5
47
ug/L
2
0.3106
50
Cadmium (Cd)
25.8
51.6
ug/L
2
0.0403
50
Chromium (Cr)
24.1
48.2
ug/L
2
0.2894
50
Cobalt (Co)
37.1
74.2
ug/L
2
0.1287
50
Copper (Cu)
26.2
52.3
ug/L
2
0.1994
50
Lead (Pb)
27.4
54.8
ug/L
2
0.0579
50
Molybdenum (Mo)
121
241
ug/L
2
0.1066
50
Nickel (Ni)
47
94
ug/L
2
0.1004
50
Selenium (Se)
31.8
63.7
ug/L
2
0.2052
50
Silver (Ag)
24.6
49.2
ug/L
2
0.0521
50
Thallium (TI) Low Level
24
48
ug/L
2
0.0326
50
Vanadium (V)
25.1
50.2
ug/L
2
0.1119
50
Page 16 of 18
Parent Sample: J25080154 -- 2025019729
% Recovery
LCL
UCL
96.5
75
125
108
75
125
115
75
125
103
75
125
103
75
125
97.5
75
125
92.9
75
125
97
75
125
Parent Sample: J25080154 -- 2025019729
% Recovery
LCL
UCL
RPD
103
75
125
1.29
107
75
125
1.27
93.9
75
125
2.67
103
75
125
0.977
95.7
75
125
2.05
104
75
125
0.974
96.9
75
125
0.381
109
75
125
0.972
112
75
125
0.559
104
75
125
0.355
103
75
125
0.151
98.3
75
125
0.79
94.2
75
125
1.28
98.5
75
125
1.56
Qualifier
Qualifier

Certificate of Laboratory Analysis Page 17 of 18
This report shall not be reproduced, except in full.
Order # J25080606
Level II QC Summary
Q25090020 TDS TOTAL DISSOLVED SOLIDS
Blank # 1
Blank # 2
Parameter Measured Final
TDS -0.1
Parameter Measured Final
TDS -0.1
Duplicate # 1
Parameter Measured Final
TDS 336
Duplicate # 2
Parameter Measured Final
TDS 238
LCS # 1
LCS # 2
Parameter Measured Final
TDS 500
Parameter Measured Final
TDS 494
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:
J25080656 -- 2025022110
Units
Dil
MDL
RPD
Qualifier
mg/L
1
25
0.889
Parent Sample:
J25080665 -- 2025022165
Units
Dil
MDL
RPD
Qualifier
mg/L
1
25
2.9
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Qualifier
mg/L
1
25
500
100
90
110
Units
Dil
MDL
Spike
% Recovery
LCL
UCL
Qualifier
mg/L
1
25
500
98.8
90
110

Duke Energy Analytical Laboratory
/ f DUKE
Mail Code MGd6A2 (Building 7406)
�C ENERGY.
Rd
Hunte(704)a, N. C. 2607a
-ter Hag. N.C. 80
pal 67ss2a6
Fax: W a76-6006
Project Name ALLEN SOUTH STARTER LANDFILL
Phone No:
PERMIT 36204NDUS
Client COURTNEY MURPHY, BRYAN MOELLER, DEE
O'BRIEN, JOSH STOWE, CONNOR ZAHORA
Operating Unit: AS00
Process:NGRDWTR
Account:
Project: AAS000415
Activity ID:
Facility ID:ALN
Program I EOuiS Task Code: ALN/ Sub-Program/Task Code:
LF
---------- Sample Description or ID
SAMPLE ID
NUMBER
J
2026021778i; ALN_SSLF-CD1B
2026021779 i 07-
2025021780 i JALN_SSLF-LCS1
•. 2025021781 JALN_FB- Zo LC OC6Z7-10Qu
CHAIN OF CUSTODY RECORD AND ANALYSIS REQUEST FORM
._ _._-.-.._.-._._._
_._._._._ _._._ _._._._--.-._._ _._._._._._._---------------------------------------
AnalyticalLaboratory Use Only
der# J25080606 Matrix WATER
6.a„I.. orl6l,uanp r.ae. Nc x_
sc_
ipad By Date a Tim
O oc
SAMPLE PROGRAM
Ground Water _A_ NPDES
Drinking Water_ UST_
RCRA Waste _
_.._.._.._.._.._.._.._.._._.-_.._.._.._.._.._.._.._.._.._.._. ._.-_.._.._--.
,dor
._.._.. _.._
Cooler TamgLC�
_.._.._. _.._-._.. _.
#
Filtration (0.45 um)
Preservative
b Unfiltered
ICE
ICE
-.._.._.._.._.._.._.._..-.._.._.._.._.._..-.._.._.._.. _.._.._.._.._.._
Container Volume (mL)
Container Type
z
600
300
S00
HDPE
PET
PET
(Metals Prep - TRM) /
(ICP - SW 60100) Be, B,
Ca, Fe, Li, Mg, Mn, Zn
(8)1 Hg (SW 7470A) /
(IMS - SW 6020B) Sb,IL
As, Be, Cd, Cr, Co, Cu,
Pb, Mo, Ni, Se, Ag,
TI LL V 14
Cl, F,
NO3-N
(
H
Hold
Time),
SO4
TDS
Customer to complete alf appropriate non -shaded areas.
in
o
Collection Information
Date
Time
Printed Name
Signature
E
u
o
-2'7'25
1025
COMA O C 7A M4
x
,
l03o
x
Z7 25
1000
C0/VA1V2Z¢1-(024
/'/1L
x
+
+
Page 18 of 18
Page _t_ of _t_
DISTRIBUTION
ORIGINAL to LAB, COPY to CLIENT
b
Filtered
260
HDPE
SW6010D Zn I SW
-
6020B Be, Cd, Cr,
e
Cu, Pb, Ni, Ag
U
Id-
4
Relinquished By
Accepted By: Date/Time
m
.r �DateirTime
�Q
o
Requested Turnaround
'j 2s 0� O
a
Relinquished By Date/Time
Accept By: DatelTime
01
mc
�
a
21 Days
Relinquished By Date/Time
Accepted By: Date/Time
y;
14 Days X
c E
c a
Seal/Locked By DatelTime
Sealed/Lock Opened By Date/Time
a m
E—
-O
`m
7 Days
Comments
EOUIS EDD Required
o
'Other
[For ALN_SSLF-CD1B and ALN_SSLF-SW1, include Total Hardness in ICP_TRM metals list]
=1
' Add. Cost Will Apply
lJ