WI0300437_Signed Permit_20200825

ROY COOPER
Governor
MICHAEL S. REGAN
secretary
S. DANIEL SMITH
Dkft-Wr
NORTH 'CAROLINA
£nvltnnmentaiQnaUW
August 25, 2020
Mr. James Wells, VP EHS Programs & Env. Sciences
Duke Energy Carolinas, LLC
526 South Church Street, Mail Code EC12J
Charlotte, NC 28202
Subject: UIC Permit Type Other No. WI0300437
Duke Marshall Steam Station Plant
Catawba County
Sent electronically and via U.S. Postal Service
Dear Mr. Wells:
In accordance with your permit application received June 19, 2020, and additional information received July
22, and August 7, 2020, we are forwarding this permit for the construction and operation of 24 UIC Type
Other infiltration wells. This permit shall be effective, unless revoked, from the date of issuance until July 31,
2025, and shall be subject to the conditions and limitations stated therein, including the requirement to submit
a Final Project Evaluation (FPE) as stated in PART VI — MONITORING AND REPORTING
REQUIREMENTS. Please read the entire permit to ensure that you are aware of all compliance requirements
of the permit.
Please note the following:
• Per permit condition I1I.1, at least forty-eight (48) hours prior to constructing or operating any
injection well, the Permittee shall notify the Underground Injection Control (UIC) Central Office staff,
telephone number 919-707-9000, and the Mooresville Regional Office staff, telephone number 704-663-
1699.
• Per permit condition VL2, sample results shall be submitted to the DWR UIC Program and
Mooresville Regional Office annually starting from date well construction and/or injection activities
commence. However, per requirements in V1.7, the Permittee shall report any monitoring or other
information that indicates noncompliance with a specific permit condition, that a contaminant may cause
a violation of applicable groundwater quality standards.
Per permit conditions Part VI.3 &4, and IX.2(G), within 30 days after each injection event, if
applicable, please provide the well construction (if not previously submitted) and injection information
on the applicable forms listed below. These forms are available on the Division of Water Resources'
website at https://decl.nc. ov/ahout/divi ions/water-resources/water-resources-I)ermits/wastewater-
branch/ground-water y,rctection/ground-water-reporting-forms
➢ Injection Event Record
➢ Well Construction Record (GW 1), if applicable
➢ Well Abandonment Record (GW-30), if applicable
North Carolina Department of Environmental Quality I Division of Water Resources
E Q} 512 North Salisbury Street 11636 Mail service Center I Raleigh, North Carolina 27699-1636
hCiF[ifG a�,yd f
919.707.9000

In order to continue uninterrupted legal use of this well for the stated purpose, you are required to submit an
application to renew the permit 120 days prior to its expiration date. As indicated in the permit, this permit is
not transferable to any person without prior notice to, and approval by, the Director of the Division of Water
Resources (DWR). If you have any questions regarding your permit or the Underground Injection Control
Program, please call me at [phone].
Best Regards,
./ 'a�'rze�)
Michael Rogers, P.G. ( c & FL)
Underground Injection Control (UIC) Program Manager
Division of Water Resources - Ground Water Resources Section
cc: Mooresville Regional Office, WQROS (sent electronically)
WI0300437 Permit File

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENTAL QUALITY (DEQ)
RALEIGH, NORTH CAROLINA
PERMIT FOR THE USE OF A WELL FOR INJECTION
In accordance with the provisions of Article 7, Chapter 87; Article 21, Chapter 143; and other
applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Duke Energy Carolinas, LLC
Catawba County
WI0300437
FOR THE CONSTRUCTION AND OPERATION OF 24 INJECTION WELL(S) TYPE OTHER
defined in Title 15A North Carolina Administrative Code 2C .0209(5)(b)(xiii). These injection
points are located at the Marshall Steam Station, 8320 East NC Highway 150, Terrell, NC 28682,
and will be constructed and operated in accordance with the permit application received June 19,
2020, and in conformity with the specifications and supporting data submitted July 22, and August
7, 2020, all of which are filed with the Department of Environmental Quality and are considered
a part of this permit.
This permit is for construction and operation, and does not waive any provisions of the Water Use
Act or any other applicable Laws, Rules, or Regulations. Operation and use of an injection well
shall be in compliance with Title 15A North Carolina Administrative Code 02C .0100 and .0200,
and any other Laws, Rules, and Regulations pertaining to well construction and use.
This permit shall be effective, unless revoked, from the date of issuance until July 31, 2025.
Permit issued the day of 92020
for S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission.
Permit No. WI0300437 PAGE 1 OF 8
ver. 8-25-2020 UIC-Other

PART I — PERMIT GENERAL CONDITIONS
1. The Permittee shall comply with all conditions of this permit and with the standards and criteria
specified in Criteria and Standards Applicable to Injection Wells (15A NCAC 2C .0200).
Noncompliance with conditions of this permit constitutes a violation of the North Carolina
Well Construction Act and is grounds for enforcement action as provided for in N.C.G.S. 87-
94.
2. This permit shall become voidable unless the facility is constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other supporting data [ 15A
NCAC 02C .0211(k)].
3. This permit is valid only for construction and operation of the number of injection wells
described in the application and other supporting data. Construction of additional injection
wells must be approved in advance by the Division of Water Resources (DWR) [15A NCAC
.0211(a)].
4. This permit is not transferable without prior notice and approval. In the event there is a desire
for the facility to change ownership, or there is a name change of the Permittee, a formal permit
amendment request and any supporting materials must be submitted at least 30 days prior to
the date of the change [15A NCAC 02C .0211(o)].
5. The issuance of this permit shall not relieve the Permittee of the responsibility of complying
with any and all statutes, rules, regulations, or ordinances that may be imposed by other local,
state, and federal agencies having jurisdiction. FurthermQre, the issuance of this permit does
not imply that all regulatory requirements have been met [15A NCAC 02C .0203].
PART II - WELL CONSTRUCTION GENERAL CONDITIONS
1. Each injection well shall not hydraulically connect separate aquifers [15A NCAC 02C
.0211(b)].
2. Multi -screened wells shall not hydraulically connect different aquifers or zones having
differences in water quality that would result in a degradation of any aquifer or zone [15A
NCAC 02C .0225(h)(17)].
3. Each injection well shall be constructed in such a manner that water from land surface cannot
migrate into the gravel pack or well screen [ 15A NCAC 02C .0225(h)(4)]. NOTE: A bentonite
seal of sufficient thickness (minimum 1 foot) shall be used if it is determined the proposed 2
feet of fine sand and 2 feet of very fine sand is inadequate to prevent water from land surface
to migrate into gravel pack or well screen.
4. Bentonite grout shall not be used to seal any water -bearing zone with a chloride concentration
equal to or greater than 1,500 milligrams per liter. In areas where elevated chloride levels are
known to exist or are probable, such as coastal areas, chloride levels shall be verified in the
field to determine existing conditions. [15A NCAC .0225(h)(8)].
5. Each injection well shall be secured to reasonably insure against unauthorized access and use.
Each well shall be permanently labeled with a warning that it is for injection purposes and the
Permit No. WI0300437 PAGE 2 OF 8
ver. 8-25-2020 UIC-Other

entrance to each well shall be secured with a locking cap as defined in G.S. 87-85(16) [15A
NCAC 02C .0225(h)(23)].
6. Each injection well shall be afforded reasonable protection against damage during construction
and use [15A NCAC 02C .02250)(3)].
7. Each permanent injection well shall have a permanently affixed identification plate [15A
NCAC .0225(h)(20)].
8. If not previously submitted, a copy of the completed Well Construction Record (Form GW-1)
shall be submitted as described in Part VI.3 of this permit (the original document goes to the
address indicated on the form).
PART III - WELL CONSTRUCTION SPECIAL CONDITIONS
1. At least forty-eight (48) hours prior to constructing or operating any injection well, the
Permittee shall notify the Underground Injection Control (UIC) Central Office staff, telephone
number 919-707-9000, and the Mooresville Regional Office staff, telephone number 704-663-
1699.
PART IV - OPERATION AND USE CONDITIONS
1. The Permittee shall be required to comply with the terms and conditions of this permit even
if compliance requires a reduction or elimination of the permitted activity [ 15A NCAC 02C
.0211(i)] .
2. The issuance of this permit shall not relieve the Permittee of the responsibility for damages
to surface water or groundwater resulting from the operation of this facility [ 15A NCAC 02C
.0206].
3. The injection facility shall be properly maintained and operated at all times to achieve
compliance with the conditions of this permit and the rules of 15A NCAC 02C .0200, even
if compliance requires a reduction or elimination of the permitted activity [15A NCAC 02C
.0211(i)].
4. In the event that the facility fails to perform satisfactorily resulting in the creation of nuisance
conditions, failure of the injection zone to adequately assimilate the injected fluid, or
daylighting, the Permittee shall take immediate corrective actions including, but not limited
to, repairs, modifications, or abandonment of the injection facility. The Permitee shall report
non-compliance according to Part VI.7 of this permit [15A NCAC 02C .0206].
PART V - INSPECTIONS [ 15A NCAC 02C .02110)]
1. Any duly authorized officer, employee, or representative of the Division of Water Resources
(DWR) may, upon presentation of credentials, enter and inspect any property, premises, or
place on or related to the injection facility at any reasonable time for the purpose of determining
compliance with this permit, may inspect or copy any records that must be maintained under
Permit No. WI0300437 PAGE 3 OF 8
ver. 8-25-2020 UIC-Other

the terms and conditions of this permit, and may obtain samples of groundwater, surface water,
or injection fluids.
2. DWR representatives shall have reasonable access for purposes of inspection, observation, and
sampling associated with injection and any related facilities as provided for in N.C.G.S. 87-
90.
3. Provisions shall be made for collecting any necessary and appropriate samples associated with
the injection facility activities.
PART VI - MONITORING AND REPORTING REQUIREMENTS
1. The proposed monitoring plan included in the application, and provided from responses to
additional information requests received July 22, 2020 (Attachment A), and August 7, 2020
(Attachment B) shall be followed. Any additional monitoring, including groundwater, surface
water, or soil sampling, deemed necessary to ensure surface water and groundwater protection
may be established and an acceptable sampling reporting schedule shall be followed [15A
NCAC 02C .0225(k)].
2. An Annual Report with all historical monitoring results shall be submitted in bound hard copy
format with attached CD or flash drive to the UIC Program Central Office, and Mooresville
Regional Office starting within one year of the first injection event. Monitoring reports shall
include, a summary of injection activities and monitoring results, analytical data presented in
a spreadsheet distinguishing between pre -injection and post injection data, and an update on
the status and location of monitoring and injection wells. Well locations may be given in a
table with the name and geographic coordinates or shown on an updated version of the site
map [15A NCAC 02C .0225(1)].
3. Records of well construction, repair, or abandonment shall be submitted within 30 days of
completion of such activities [15A NCAC 02C .0225(1)].
4. An Injection Event Record (IER) shall be submitted within 30 days of each individual injection
event, if applicable [I 5A NCAC 02C .0225(1)].
5. The Permittee shall submit a Final Project Evaluation (FPE) within 9 months after completing
all injection -related activity associated with this permit or produce an interim evaluation to be
submitted with a renewal application for this permit. Both the final project evaluation and
interim evaluation shall contain historical monitoring data and updated contaminant plume and
potentiometric surface maps. PLEASE NOTE: Inj ectants and related reaction byproducts must
attenuate to pre -injection concentrations or groundwater standards specified in rule 15A NCAC
02L .0202, whichever is �_,reater, in order for this permit to be closed. Otherwise, corrective
action as described in Part VII may be required [15A NCAC 02C .0225(1)].
6. All monitoring results, forms, and reports required in this Part shall be submitted to:
UIC Program
NC Division of Water Resources
1636 Mail Service Center
Raleigh, NC 27699-1636
Water Quality Regional Operations
and WQROS Mooresville Regional Office
610 East Center Ave.
Mooresville, NC 28115
Permit No. WI0300437 PAGE 4 OF 8
ver. 8-25-2020 UIC-Other

7. The Permittee shall report any monitoring or other information that indicates noncompliance
with a specific permit condition, that a contaminant may cause a violation of applicable
groundwater quality standards, or that a malfunction of the injection system may cause the
injected fluids to migrate outside the approved injection zone or area. As specified in rule
15A NCAC 02C .0211(p), noncompliance notification shall be as follows:
(A) Oral notification shall be given within 24 hours of the occurrence, or first knowledge
of the occurrence, to the Mooresville Regional Office, telephone number 704-663-
1699.
(B) Written notification shall be made within five days of the occurrence and submitted
to the addresses in Item #6 above.
(C) The written notification shall contain a description of the noncompliance and its
cause; the period of noncompliance, including dates and times; if the noncompliance
has not been corrected, the anticipated time it is expected to continue; and any steps
taken or planned to reduce, eliminate, and prevent reoccurrence of the
noncompliance.
PART VII - CORRECTIVE ACTION [15A NCAC 02C .0206]
1. Any injection well not constructed or operated in accordance with this permit, or the criteria
and standards specified in 15A NCAC 02C .0200, shall be subject to corrective action as
provided under rule 15A NCAC 02C .0206.
2. The following corrective actions shall apply to elevated concentrations of inj ectants or reaction
byproducts resulting from the permitted injection activity:
(A) Continued monitoring until concentrations return to pre -injection values or meet the
standards specified in 15A NCAC 02L .0202, whichever are greater. The frequency,
duration, and location of monitoring shall be appropriate for site specific conditions and
potential receptors.
(B) Groundwater quality parameters that do not attenuate as described in 2(A) above may
warrant a corrective action plan as provided under rule 15A NCAC 02C .0206, depending
on the type, concentration, and distribution of the groundwater quality standards being
exceeded.
PART VIII - PERMIT RENEWAL [I 5A NCAC 02C .0211(h)]
In order to continue uninterrupted legal use of the injection facility for the stated purpose, the
Permittee shall submit an application to renew the permit 120 days prior to its expiration date.
PART IX - CHANGE OF WELL STATUS [15A NCAC 02C .0240]
1. The Permittee shall provide written notification within 15 days of any change of status of an
injection well. Such a change would include the discontinued use of a well for injection. If a
well is taken completely out of service temporarily, the Permittee must install a sanitary seal.
If a well is not to be used for any purpose that well must be permanently abandoned according
Permit No. WI0300437 PAGE 5 OF 8
ver. 8-25-2020 UIC-Other

to 15A NCAC 2C .0240, Well Construction Standards.
2. When operations have ceased at the facility and a well will no longer be used for any purpose,
the Permittee shall abandon that injection well in accordance with the procedures specified in
15A NCAC 2C .0240, including but not limited to the following:
(A) All casing and screen materials may be removed prior to initiation of abandonment
procedures if such removal will not cause or contribute to contamination of the
groundwaters.
(B) The entire depth of each well shall be sounded before it is sealed to insure freedom
from obstructions that may interfere with sealing operations.
(C) The well shall be thoroughly disinfected, prior to sealing, if WQROS staff determines
that failure to do so could lead to the contamination of an underground source of
drinking water.
(D) Drilled wells shall be completely filled with cement grout or bentonite grout, which
shall be introduced into the well through a pipe which extends to the bottom of the well
and is raised as the well is filled.
(E) In the case of gravel -packed wells in which the casing and screens have not been
removed, neat -cement, or bentonite grout' shall be injected into the well completely
filling it from the bottom of the casing to the top.
(F) In those cases when, as a result of the injection operations, a subsurface cavity has been
created, each well shall be abandoned in such a manner that will prevent the movement
of fluids into or between underground sources of drinking water and in accordance with
the terms and conditions of the permit.
(G)The Permittee shall submit a Well Abandonment Record (Form GW-30) as specified
in 15A NCAC 2C .0225(l) within 30 days of completion of abandonment.
3. The written documentation required in Part IX (1) and (2)(G) shall be submitted to:
UIC Program
DEQ-Division of Water Resources
1636 Mail Service Center
Raleigh, NC 27699-1636
Permit No. WI0300437 PAGE 6 OF 8
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ATTACHMENT A
Permit No. WI0300437 PAGE 7 OF 8
ver. 8-25-2020 UIC-Other

DUKE
ENERGY®
PROGRESS
July 22, 2020
Mr. Michael Rogers
N.C. Department of Environmental Quality
Division of Water Resources, UIC Program
1636 Mail Service Center
Raleigh, North Carolina 27699-1636
Subject: Underground Injection Permit —Additional Information Request
UIC Permit No. W10300437
Duke Energy Carolinas, LLC
Marshall Steam Station
Terrell, NC 28682
Mr. Michael Rogers,
526 South Church St
Mail Code EC12J
Charlotte, NC 28202
On behalf of Duke Energy Carolinas, LLC (Duke Energy), Arcadis G&M of North Carolina is
submitting the attached additional information pertaining to UIC Permit No. W10300437 that
was requested by the North Carolina Department of Environmental Quality (NCDEQ) in a letter
dated July 7, 2020. This information supports the initial application package, which was
submitted on June 19, 2020, to obtain a permit to install and operate up to 24 clean water
infiltration wells at the Marshall Steam Station, located in Terrell, North Carolina.
Below, in bold/italic font, are the items listed in the above -referenced NCDEQ letter followed
by Duke Energy's response.
1. More detail is needed on how contaminates of interest (COIs) and unrelated
contaminants that may be present in surface water (e.g. PFAS/PFOAs) will be
monitored and reduced to prevent injection into the subsurface that may result in
exceedances of groundwater standards per 15A NCAC 02L.0202
Water proposed for use as clean water infiltration water will be collected from a new water
intake located in Lake Norman, southeast of the Ash Basin (see Figure D-2 in UIC Permit
Application). A sample of this water was collected on April 30, 2020 and analyzed for the
following: total alkalinity, nitrate, inorganic ions (chloride, fluoride, sulfate, and sulfide), mercury,
dissolved metals, total metals, geochemical parameters (total dissolved solids, total suspended
solids, pH, total organic carbon, dissolved oxygen, temperature, specific conductivity), and
coliform.1 Results of this sample were included as Appendix A of the Pilot Test Work Plan
(Arcadis 2020). No constituents were present at concentrations above their respective
screening criteria, which was identified as the greater of the 02L groundwater standard, the
Interim Maximum Allowable Concentration or the shallow background threshold concentration.
In addition, Duke Energy conducted a PFAS surface water sampling event in 2019, including
four locations on Lake Norman. Analytical results for these four samples showed that all
' A separate surface water sample was collected for coliform on May 27, 2020.
8111LOiNG A SMARTER FNFRGV FUTURP

compounds were below the Reporting Limit (Limit of Quantitation). The Reporting Limits were
well below the USEPA drinking water lifetime human health advisory of 70 parts per trillion.
A sampling program will be conducted for the infiltration water during the course of system
operation in order to verify the continued compliance of constituents with the applicable
groundwater standards. An initial sample of all analytes listed above and non -site related
compounds (i.e., volatile organic compounds [VOCs], semi -volatile organic compounds
[SVOCs], and polychlorinated biphenyls [PCBs]) will be collected from the new intake prior to
the pilot system startup. During the first six months of pilot and full system operation, a monthly
sample of infiltration water will be collected and analyzed for a reduced list of base compounds,
including total alkalinity, nitrate, inorganic ions, mercury, dissolved metals, total metals,
geochemical parameters, and coliform. Additional analysis of non -site related compounds,
including VOCs, SVOCs, and PCBs, will be performed quarterly during the first six months of
pilot and full -system operation. If analytical results show consistent water quality below the
applicable groundwater standards, a reduced sampling program may be implemented for future
operations.
2. More detail is needed in the Application on the Interim Monitoring Plan (IMP) and the
Environmental Monitoring Plan (EMP). This would include lists of parameters for
both, time frame or schedule for transition from IMP to EMP, etc.
The Interim Monitoring Plan (IMP) was initially developed as part of the Corrective Action Plan
(CAP) in 2015. Several modifications to the IMP have been implemented since 2015. A
summary of the current IMP is included in Attachment A-1. This summary table includes the
2015 IMP, wells added as part of the Work Plans for additional source areas and data gap wells
installed in late 2019, as well as wells identified in an email correspondence between Brandy
Costner (NCDEQ) and Tyler Hardin (Duke Energy) that documents recent minor modifications
to the March 2019 IMP. A summary of analytical parameters for newly installed wells is provided
in Attachment A-2. This IMP will'remain in place until approval of the CAP Update (SynTerra
2019), at which time the Effectiveness Monitoring Plan (EMP) will go into effect. A summary of
the proposed EMP, as provided in the CAP Update, is included in Attachment A-3.
It should be noted that based on the March 4, 2020 letter to the NCDEQ, and the subsequent
response from the NCDEQ (Holman to Draovitch, May 12, 2020), Duke Energy is evaluating the
proposed EMP for opportunities to optimize the monitoring program.
3. More detail is needed on how injection pressures will be managed to avoid creating
preferential pathways.
Infiltration pressures for each well will be monitored at two locations: the infiltration manifold
(within the modular system) and at the infiltration wellhead. The infiltration manifold includes a
pressure transmitter that monitors the infiltration pressure (at the modular building) and will shut
a control valve if the pressure setpoint (user adjustable) is exceeded. Infiltration pressure will
also be monitored within the well using a downwell transducer. The downwell controls will also
have the ability to shut a control valve if the pressure setpoint (user adjustable) is
exceeded. Along with these two automated controls the system manifold includes a diaphragm
hand valve to control the pressure and flow to each well. Additional details regarding clean
water infiltration pressures are provided in Attachment C of the UIC Permit Application and in
Section 4.1.3.3 of the Pilot Test Work Plan.

4. There appears to be a typo in the Recovery Well Permit Application package received
by the Mooresville Regional Office (MRO) concerning the number of wells. Please
confirm the total number of wells.
Duke Energy reviewed the number of wells listed in the Recovery Well Permit Application
package for the Marshall Steam Station and found no typo in the number of wells. Up to 32
extraction wells will be installed, including nine wells screened in -bedrock and 23 wells screened
across the three interconnected hydrostratigraphic zones (shallow, transition zone, and
bedrock).
5.. Please provide your phone number as this was not included on the U1C Permit
Application.
980-373-6800
We appreciate the NCDEQ's timely review of this submittal package as we proactively
implement the groundwater remediation strategy for this Site. Please contact Mr. Scott Davies
(980.373.6563) with any questions or concerns regarding this application.
Sincerely,
Tyler Digitally signed byp.p.
p.p. Y Tyler Hardin, P.E.
04 e0 020.07.22 08:28:20
Hardin, P.E.
Scott E. Davies, P.G.
Project Director
cc: Steve Lanter, NCDEQ Division of Water Resources, Central Office
Eric Smith, NCDEQ Division of Water Resources, Central Office
Andrew Pitner, NCDEQ Division of Water Resources, Mooresville Regional Office
Brandy Costner, NCDEQ Division of Water Resources, Mooresville Regional Office
Attachments
Attachment A — Interim Monitoring Plan and Effectiveness Monitoring Plan Summary
Table A-1 Modified IMP Summary
Table A-2 Summary of Analytical Parameters for Newly Installed Wells
Table A-3 Effectiveness Monitoring Plan Summary

ATTACHMENT A
Table A-1 Modified IMP Summary
Table A-2 Summary of Analytical Parameters for Newly installed Wells
Table A-3EMP Summary
r

Table A-1
MODIRED IMP SUMMARY
MARSHALL STEAM STATION
DUKE ENERGY CAROLINAS. LLC, TERRELL, NC
Comprehensive Water Leval Sweep to occur Semi -Annually
Modlgcar/an -March 2019 (to begin Q12019) with Inter/. Changes/
Wells for Quarterly Monitoring
AB-10SUD/BRIBRL'
CP-1SIDBR
AB-12S'ID'/BR'
CP-2S/D
AB-14DIDU
CP-3S/D
AB-15SL
PVSF-1SIDBR
AB-1 S'ID'BR'IBRL'BRLL'BRLLL'-
PVSF-2SID/BRIBRL
AB-20S
PVSF-3S/DBR
AB-21S
PVSF4SIDBR
AB-2BR"
AB-3S
AB-5S'lD'IDU'IBR'
CCRASID
AB-OSIDBRABRL
CCR-2SID
AL-1S'/D'BR'IBRL'
CCR-3S1D
AL-28/DIBRIBRUBRLUBRLLL3'
AL-3D/BR
AL4D/BR/BRL
CCR-OS11DA1
GWA-15S'1D'
MW-14BR'IBRL'
MW-BS'/D'
M W-7S'1D'
Wells for Semi -Annual Monitoringtt
AB-12SL'
GWA-WIDa
AB-14S
GWA-7SID
AB-15DIBR
GWA-8S/D
AB-20D
GWA-9BR
AB-21D
GWA-10SID
AB-28'ID'
GWA-118'/D'/13R'
AB.413
GWA-12S'ID-IBR'
AB-QWDIBR
GWA-13S/DA-
AL-3S
GWA-14SID
BG-lS'/D'IBRA'
MW-1
BG-2S'BRa
MW-4eBs
BG-3S'ID'BR'
MW-7
GWA-1S'/D'BR'
MW-12S0
GWA-3S/D
MW-1380
GWA-4S/D
MW-148'ID'
GWA58I1)
OB-I (Dry Ash Landfill)
AB-16DU
GWA-2DA
AB-7DU
MW-8S'ID'
AB-SDU
MW-98'ID'
GP-1S/D
ILF-lS/D/BR
GP-2S/D
ILF-2SID
GP-3S/D
Comprehensive Water Level Sweeps (includes wells in Seml-Annual,
Quarterly, and Discontinued
Monitoring Lists)
Optimized Quarterly & Semi -Annual Parameters for 'Non -New" Wells
2018 CSA Update COls
Additional Water Quality Parameters
Total & Dissolved if Applicable
(Toted & Dissolved If Applicable
Antimony
Manganese
Aluminum
Arsenic
Molybdenum
Alkalinity (CO3/HCO3)
Barium
Nickel
Calcium
Beryllium
Radium (226+228)'
Dissolved Oxygen (DO)
Boron
Selenium
Fluoride
Cadmium
Strontium
Lithium
Chloride
Sulfate
Magnesium
Chromium (total)
Total Dissolved Solids (IDS)
Nitrate+ Nitrite
Chromium (hexavalem)
Thallium
Oxidation -Reduction Potential (ORP)
Cobalt
Vanadium
pH
Iron
Potassium
Specific Conductance
Sodium
Temperature
Total Organic Carbon (TOC)
Turbidity
Discontinue Sampling WellslWater
Level Only
AB-10S
AB-11S/D
AB-13S/D
AB-16SID
AS-4SISUD
AB-7SID
AB-8SID
GWA-2S
MS-8'
MS-10'
MS-113
MS-13'
MW-1DSID
MW-11S/D
MW-2'
MW-33
MW-5'
OB-1 (Ash Basin)
N—:
IMP - Interim Monilornq Plan
CSA- Comprehensive she Assessment
COI - constituent(.) of Interest
CAMA- Coal Ash Menegamad Act
NCDFA m -North Cmotns Departmenl of Enviranental Coady
t Mmiliollons to March 20191MP Includes wells edtletl as pad of Marshall Sham SlaBco -Adshbona/ Source Areas Assessment Work Plan -Rev 2 (SynTerta 2018a), Marshall Sim, Sretbn -Dale Gap Evaluation Work Plan -Rev 2
(8ynTeno 2019b) end ,at commpordenoe betwoen Brandy Costrary (NCDEO) and Tyler Hardin (Duke Energy) dated 4129/2020.
Tt Sem4Annual momoring event. me scheduled to be performed concuari with mo Quarterly montodng everts per year and willinclude the vrells Udell ureter Onitedy for respective everts.
' New wells Installed as pert of the CAMA program volt be monitored quarterly. Samples from Mass woos will be analyzed for parameters formally included as pad of the 4M Owner 2018 IMP arid Additbral constituents analyzed volunlady
(ace Table A-2). Aaar four quaruslyevants, the m 11crirg fl q.... y aM/or "remoter let for the new wells wIII be re—,ImW with NCDEO and may be reduced anryor op8mbed. Replacement wells will rot be considered "row walls and
Mil follow the raWacti monBoring protocol for the wall In which they replace; hovrever, addNmal parameters may be Included vduntafity.
Do—. wag was prevbudy approved by NCDEO to be sampled for boron and euVeto only in historic versions of the IMP due to elevated pH. Respective well Is proposed to remain a bo wand-suBab- rdy sample location; however, it
the pH improves with redevelopment to fag a 8.5 at such wag, the well will be sampled for the complete appropriate parameter auto for that well; Le.. "optimized nonatevr weir or'new veer lists as proposed herein.
' Indicates CCR ndvork well edtletl to IMP per Brandy Coabier request (conference cell 00/0512018).
' Wall currently Included an IMP list that Is Proposed to be removed from IMP (CAMA) sampling; wll centime to be sampled under applicable landfill penult requkements.
'Totel radlum to be analyzed al select lecallon. in..cordance with 04 NIB IMP
Pepe 1 of 1

Table A-2
SUMMARY OF ANALYTICAL PARAMETERS FOR NEWLY INSTALLED WELLS
MARSHALL STEAM STATION
DUKE ENERGY CAROLINAS, LLC, TERRELL, NC
New wells installed as part of the CAMA program will be monitored quarterly. Samples from these wells will be analyzed for parameters formerly in
cluded as part of the 4th Quarter 201E IMP and additional constituents analyzed voluntarily. After four quarterly events, the monitoring frequency
and/or parameter list for the new wells will be re-evaluated with NCDEQ and may be reduced and/or optimized. A summary of analytical parameters
to include under this criteria Is provided below.
SUMMARY OF ANALYTICAL PARAMETERS FOR NEWLY INSTALLED WELLS
Minimum CAMA Parameters per Q4 20181MP
Additional Voluntary Parameters
(Metals are Totals)
(Dissolved (0.45 micron filter))
Aluminum
Mercury
Aluminum Magnesium
Alkalinity (C031HCO3)
Molybdenum
Antimony Manganese
Antimony
Nickel
Arsenic Mercury
Arsenic
Potassium
Barium Molybdenum
Barium
Radium (226+228)
Beryllium Nickel
Beryllium
Selenium
Boron Phosphorus
Boron
Sodium
Cadmium Potassium
Cadmium
Strontium
Calcium Selenium
Calcium
Sulfate
Chromium Silver
Chloride
Sulfide
Cobalt Sodium
Chromium
Todal Dissolved Solids (TDS)
Copper Strontium
Cobalt
Thallium
Iron Thallium
Copper
Total Organic Carbon (TOC)
Lead Vanadium
Hexavalent Chromium
Uranium (233+234+236+238)
Lithium Zinc
Iron
Total Suspended Solids (TSS)
Additional Voluntary Parameters
Lead
Vanadium
(Totals)
Magnesium
Zinc
Fluoride Nitrate + Nitrite
Manganese
Lithium Phosphorus
Additional Field Water Quality Parameters
Dissolved Oxygen (DO) Oxidation -Reduction Potential (ORP)
Redox Potential (Eh) Turbidity
Temperature Specific Conductance
pH
Page 1 of 1

TABLE A-3
EFFECTIVENESS MONITORING PLAN SUMMARY
MARSHALL STEAM STATION
DUKE ENERGY CAROLINAS, LLC, TERRELL, NC
Effectiveness Monitoring Plan (EMP)
Port -Closure Monitoring Plan (PCMP)
Implemented 30 days after CAP approval
Implemented after completion of ash
basin closure activities
Remedial Action
Groundwater Performance
Monitoring
Well Network
PCMP Groundwater Monitoring Well Network
(background, downgradient of ash basin)
AB-IBR CCR-14D4
MW-6D
PVSF-3S
Upgradient/
Geochemical
AB-IBRL CP-SS
MW-7S'
PVSF-3D
Background Wells'
Transact Wells'
AB-IBRLL CP-SD
MW-713'
PVSF-3BR
BG-IS
AB -IS
2
' AB-IBRLLL CP-IBR
MW$S
PVSF-4S
BG-1D
AB-11)
L
=
AB-25R EMP-OIBR'
MW-8D
PVSF-4D
BG-1BRA
AB-2S
p,
AL -SS EMP-02BR'
MW-95
PVSF-4BR
BG-2S
AB-21)
C
AL -SD EMP-03S'
MW-9D
BG-2BR
EMP-01S'
de
AL-3BR EMP-03D'
MW-12S
BG-3S
EMP-OID'
c
°
AL-1BRL EMP-03BR'
MW-12D
BG-3D
EMP-025'
A PCMP will be Implemented at the Site In
S
CCR-4S EMP-04S'
MW-14S
BG-3BR
EMP-020
accordance with G.S. 130A-309.214(a)(4)k.2 after
Y
CCR-4D EMP-04D'
MW-14D
GWA-4S
CCR-5S
completion of ash basin closure activities.
°
v
CCR-9S EMP-045W
MW-14BR
GWA-4D
CCR-SD
CCR-9DA ILF-2S
CCR-11S4 ILF-2D
MW-14BRL
PVSF-IS
GWA-5S
GWA-5D
GWA-15S
GWA-15D
4 CCR-ISDGWA-10S
PVSF-ID
GWA-65
M111-105
�
CCR-12S4 GWA-SOD
PVSF-IBR
GWA-6D
MW-SOD
CCR-12D4 GWA-11S
PVSF-2S
GWA-SS
CCR-13S4 GWA-1ID
PVSF-2D
GWA-8D
CCR-13D4 GWA-11BR
PVSF-2BR
GWA-12S
CCR-14S4 MW-6S
PVSF-25RL'
GWA-12D
EMP Groundwater Quality"
PCMP Groundwater Quality
(Semi -Annual Sampling Frequency)
(Sampling frequency to be determined)
mAlkalinity
Cobalt Selenium
Aluminum Ferrous Iron Strontium
m
Antimony Iron Sodium
m
Barium Uthlum' Sulfate
Parameters and sampling frequency to be included
Aa
Beryllium Magnesium Thallium
In the PCMP In accordance with G.S. 130A-
A. e
Bicarbonate Alkalinity Manganese Total Dissolved Solids (TDS)6
3D9.214(a)(4)k.2 when submitted.
e a
Boron` Molybdenum Radium (total)
Calcium Nitrate + Nitrite Total Organic Carbon
n
E
r-nc��c. Patass�um Vanadium
EMP and PCMP Groundwater Fi Id Parameters
IA
• �• r Speefic CQnd10Ivi1y Temperature
PH Oxidation Reduction Potential Dissolved Oxygen
EMP Duration
PCMP Duration
Annual Effectiveness Monitoring Evaluation and Reporting
Annual Evaluation and Reporting
c
1) Summary of annual groundwater monitoring results
1) Summary of annual groundwater monitoring
Y
2) Evaluate statistical concentration trends
results
°
3) Comparison of observed concentrations to model predictions
2) Evaluate statistical concentration trends
4) Evaluation of compliance with applicable Standards
3) Comparison of observed concentrations to
5) Evaluation of system performance and effectiveness
model predictions
6) Recommend plan adjustments, if applicable, to optimize the remedial action
4) Evaluation 02L compliance
a
5) Recommend plan adjustments, If applicable
m5-Year
Performance Review Reporting
3
1) Update background analysis
At a frequency no greater than 5 years
2) Confirm Risk Assessment assumptions remain valid
1) Update background analysis
3) Re-evaluate effectiveness of technology
2) Confirm Risk Assessment assumptions remain
4) Verify modeling results, update model If needed
valid
5) Modify corrective action approach, as needed, to achieve compliance goal established
3) Verify model results, update if needed
EMP Review
PCMP Review
aAfter
ash basin closure and following ash basin
closure certification,
C
a PCMP will be Implemented at the Site for a
minimum of 30 years in accordance with G. S.
m
30 days after CAP approval, the EMP will be Implemented at the Site and will continue until there Is a total of three
130A-309.214(4)(k)(2).
Is
years of data confirming COIs are below applicable Standards at or beyond the compliance boundary, at which time a
Early termination:
request for completion of active remediation will be filed with NCDEQ.
If groundwater monitoring results are below
d
applicable Standards at the compliance boundary
If applicable standards are not met, the EMP will continue and transition to post -closure monitoring if necessary.
for three years, Duke Energy will request
e
completion of corrective action In accordance with
j
G.S. IBOA-309.214(a)(3)b. If groundwater
monitoring results are above applicable Standards,
S
the PCMP will continue.
rreparea oy: r•-.w LneMea oy: 9LIA
oe•
1) Select Bow path groundwater wells would have geochemical sondes Installed for telemetry monitoring of the six groundwater field parameters. See Appendix O, Figure 2.
2) New EMP groundwater well proposed for performance monitoring. All other wells listed are existing groundwater monitoring wells.
3) Approved background groundwater monitoring location.
4) Groundwater monitoring well assumed to be abandoned from closure activities. Groundwater well location proposed to be replaced post -closure.
5) Proposed well to be Installed In Quarter 4 - 2019.
6) Geochemically non -reactive constituents (i.e., conservative corrective action COls) that best depict the areal extent of the plume; and monitor plume stability and physical attenuation either
from active remedy or natural dilution/disperslon.
7) The number of monitoring wells and parameters may be adjusted based on additional data and the effects of corrective action.
8) Groundwater standards may be modified over time In accordance with 02L .0106(k).
Italicized parameters - parameters for general water quality to evaluate monitoring data quality (electrochemical charge balance).
Page 1 of 1

ATTACHMENT B
Permit No. WI0300437 PAGE 8 OF 8
ver. 8-25-2020 UIC-Other

DUKE
ENERGY®
August 7, 2020
Mr. Michael Rogers
N.C. Department of Environmental Quality
Division of Water Resources, UIC Program
1636 Mail Service Center
Raleigh, North Carolina 27699-1636
Subject: Underground Injection Permit — 2"d Additional Information Request
UIC Permit No. W10300437
Duke Energy Carolinas, LLC
Marshall Steam Station
Terrell, NC 28682
Mr. Michael Rogers,
526 South Church St
Mail Code EC12J
Charlotte, NC 28202
Duke Energy Carolinas, LLC (Duke Energy) is submitting the attached additional information
pertaining to UIC Permit No. W10300437 that was requested by the North Carolina Department
of Environmental Quality (NCDEQ) in an email dated July 27, 2020. This information supports
the initial application package (submitted on June 19, 2020) and the first request for additional
information (submitted on July 22, 2020) to obtain a permit to install and operate up to 24
clean water infiltration wells at the Marshall Steam Station, located in Terrell, North Carolina.
Below, in bold/italic font, are the items listed in the above -referenced NCDEQ email followed
by Duke Energy's response.
1. You indicate sampling for PFAS was conducted in 2019. We would like to request the
laboratory analytical results be provided.
Attachment A includes a copy of the analytical laboratory report for the PFAS surface water
sampling conducted by Duke Energy in 2019 for four locations on Lake Norman and one blank
sample. These results are being provided at the request of NCDEQ; however, Duke Energy
emphasizes that PFAS compounds are unrelated to Duke Energy and the operations and
activities at the Marshall Steam Station. Also, as previously stated, results for these samples
showed that all PFAS compounds were below the Reporting Limit (Limit of Quantitation), and all
reporting Limits were well below the USEPA drinking water lifetime human health advisory of 70
parts per trillion.
2. In regards for the proposed sampling for SW for the remediation project, we would
like to request a monitoring plan be provided in similar tabular format as the plans for
groundwater monitoring. The SW plan should also include a list of the proposed
suite of constituents for PFAS and sampling frequency.
Attachment B includes a table summarizing the constituents that will be analyzed for as part of
the Pilot Test clean water infiltration source monitoring. Sampling frequency for each constituent
is also included. The monitoring plan includes site -related constituents of interest, geochemical
parameters, and unrelated site constituents. Unrelated site constituents, including PFAS, will be
BUILDING A SMARTER FNFRGY FUTURFF"

monitored at NCDEQ's request; however, these constituents are unrelated to Duke Energy and
the operations and activities at the Marshall Steam Station. As previously stated, if analytical
results show consistent water quality below the applicable groundwater standards, a reduced
sampling program may be implemented for future operations.
We appreciate the NCDEQ's timely review of this submittal package as we proactively
implement the groundwater remediation strategy for this Site. Please contact Mr. Scott Davies
(980.373.6563) with any questions or concerns regarding this application.
Sincerely,
Scott E. Davies, P.G.
Project Director
cc: Steve Lanter, NCDEQ Division of Water Resources, Central Office
Eric Smith, NCDEQ Division of Water Resources, Central Office
Andrew Pitner, NCDEQ Division of Water Resources, Mooresville Regional Office
Brandy Costner, NCDEQ Division of Water Resources, Mooresville Regional Office
Attachments
Attachment A — Analytical Laboratory Report J 19050054
Attachment B — Clean Water Infiltration Source Monitoring Plan

ATTACHMENTS
f.

ATTACHMENT A

DUKE Analytical Laboratory
ENERGY,
13339 Hagers Ferry Road
Huntersville, NC 28078-7929
McGuire Nuclear Complex - MG03A2
Phone:[phone] Fax:[phone]
Vendor QC Data Review
Summary Report
Order Number:
J19050054
Project Name:
MCGUIRE -
Customer Name(s):
Josh Quinn
Lab Contact:
Peggy Kendall Phone: [phone]
Report Authorized By:
(Signature)
� �. �r�-, . - I��
Program Comments:
Please review all vendor data for case narratives with explanations of quality control failures and data qualifiers.
5-13-19
Page 1 of 26
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. Certified vendor results and QC qualifiers can be found in the vendor lab final report.
This report shall not be reproduced, except in full, without the written consent of the Analytical Laboratory.
Vendor Data Review Criteria:
This vendor data package has been reviewed at the Duke Analytical Laboratory for the following applicable criteria:
• Required QC samples collected and analyzed
• Required tests performed for all samples
• Vendor Laboratory utilized required test methods for all analyses
• Vendor Laboratory met all requested Reporting Limits (RL)
• QC Results reviewed for outlying recovery values
Case Narrative:
QC Note: For E_2_9.5_FB, the surrogate recovery for 13C2-4:2FTS was outside the upper control limit. This sample did not
contain any associated target analytes; therefore, re -extraction and re -analysis was not performed.

5-13-19
Page 2 of 26
SHEALY ENVIRONMENTAL SERVICES, INC.
Report of Analysis
Duke Energy
13339 Hagers Ferry Rd
Bldg 7405
Huntersville, NC 28078
Attention: Peggy Kendall
Project Name: Lake Norman SS
Project Number: J19050054
Lot Number:UE03003
Date Completed:05/09/2019
05/10/2019 2:18 PM
Approved and released by:
Project Manager: Grant Wilton
a A<CREL
2 w f�G
AkI.SC�nC=i�E
I"
DMEW
The electronic signature above is the equivalent of a handwritten signature.
This report shall not be reproduced, except in its entirety, without the written approval of Shealy Environmental Services, Inc.
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 1 of 24

5-13-19
Page 3 of 26
SHEALY ENVIRONMENTAL SERVICES, INC.
SC DHEC No: 32010001 NELAC No: E87653 NC DENR No: 329 NC Field Parameters No: 5639
Case Narrative
Duke Energy
Lot Number: UE03003
This Report of Analysis contains the analytical result(s) for the sample(s) listed on the Sample Summary
following this Case Narrative. The sample receiving date is documented in the header information
associated with each sample.
All results listed in this report relate only to the samples that are contained within this report.
Sample receipt, sample analysis, and data review have been performed in accordance with the most
current approved NELAC standards, the Shealy Environmental Services, Inc. ("Shealy") Quality
Assurance Management Plan (QAMP), standard operating procedures (SOPS), and Shealy policies. Any
exceptions to the NELAC standards, the QAMP, SOPS or policies are qualified on the results page or
discussed below.
If you have any questions regarding this report please contact the Shealy Project Manager listed on the
cover page.
PFAS by Isotope Dilution
Samples -001, -002,-003,-004, and -005 were provided by client in polypropylene bottles preserved with
1.25g Trizma.
Sample -005: Surrogate recovery for 13C24:2FTS was outside the upper control limit This sample did not
contain any associated target analytes; therefore, re -extraction and re -analysis was not performed.
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 2 of 24

SHEALY ENVIRONMENTAL SERVICES, INC.
Sample Summary
Duke Energy
Lot Number: UE03003
Project Name: Lake Norman SS
Project Number: J19050054
Sample Number
Sample ID
Matrix
Date Sampled
Date Received
001
C_2_5.0
Aqueous
05/02/2019 0815
05/03/2019
002
E_2_9.5
Aqueous
05/02/2019 0847
05/03/2019
003
F_2_11.5
Aqueous
05/02/2019 0952
05/03/2019
004
1_3_MRSVINT
Aqueous
05/02/20191200
05/03/2019
005
E_2_9.5_FB
Aqueous
05/02/2019 0847
05/03/2019
(5 samples)
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 3 of 24

SHEALY ENVIRONMENTAL SERVICES, INC.
Detection Summary
Duke Energy
Lot Number: UE03003
Project Name: Lake Norman SS
Project Number: J19050054
Sample Sample ID
Matrix
Parameter
Method
Result
Q
Units
Page
001
C_2_5.0
Aqueous
PFBA
537 Modified-
0.93
J
ng/L
5
001
C_2_5.0
Aqueous
PFHxA
537 Modified-
1.9
J
ng/L
5
001
C_2_5.0
Aqueous
PFOA
537 Modified-
1.2
J
ng/L
5
001
C_2_5.0
Aqueous
PFPeA
537 Modified-
1.4
J
ng/L
5
001
C_2_5.0
Aqueous
PFOS
537 Modified-
1.3
J
ng/L
5
002
E_2_9.5
Aqueous
PFBA
537 Modified-
0.93
J
ng/L
7
002
E_2_9.5
Aqueous
PFHxA
537 Modified-
1.6
J
ng/L
7
002
E_2_9.5
Aqueous
PFOA
537 Modified-
1.4
J
ng/L
7
002
E_2_9.5
Aqueous
PFPeA
537 Modified-
1.4
J
ng/L
7
002
E_2_9.5
Aqueous
PFOS
537 Modified-
1.4
J
ng/L
7
003
F_2_11.5
Aqueous
PFHxA
537 Modified-
1.4
J
ng/L
9
003
F_2_11.5
Aqueous
PFOA
537 Modified-
1.3
J
ng/L
9
003
F_2_11.5
Aqueous
PFPeA
537 Modified-
1.3
J
ng/L
9
003
F_2_11.5
Aqueous
PFOS
537 Modified-
1.4
J
ng/L
9
004
1_3_MRSVINT
Aqueous
PFBA
537 Modified-
0.93
J
ng/L
11
004
1_3_MRSVINT
Aqueous
PFHxA
537 Modified-
1.6
J
ng/L
11
004
1_3_MRSVINT
Aqueous
PFOA
537 Modified-
1.2
J
ng/L
11
004
1_3_MRSVINT
Aqueous
PFPeA
537 Modified-
1.4
J
ng/L
11
004
I_3_MRSVINT
Aqueous
PFOS
537 Modified-
1.4
J
ng/L
11
(19 detections)
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 4 of 24

PFAS by LC/MS/MS
Client: Duke Energy Laboratory ID: UE03003-001
Description: C_2_5.0 Matrix: Aqueous
Date Sampled:05/02/2019 0815 Project Name: Lake Norman SS
Date Received:05/03/2019 Project Number: J19050054
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 537 MOD 537 Modified -ID 1 05/07/2019 1355 MMM 05/06/2019 1306 15764
Parameter
CAS
Number
Analytical
Method
Result Q
LOO
DL
Units
Run
Hexafluoropropylene oxide dinner acid (GenX)
13252-13-6
537 Modified-
ND
6.7
1.7
ng/L
1
1H, 1H, 2H, 21-1-perfluorodecane sulfonic acid (8:2 FTS)
39108-34-4
537 Modified-
ND
6.7
1.7
ng/L
1
1H, 1H, 2H, 21-1-perfluorooctane sulfonic acid (6:2 FTS)
27619-97-2
537 Modified-
ND
6.7
1.7
ng/L
1
1H,1H,2H,2H-perfluorododecane sulfonic acid (10:2 FTS)
120226-60-0
537 Modified-
ND
6.7
1.7
ng/L
1
1 H,1 H,2H,2H-perfluorohexane sulfonic acid (4:2 FTS)
757124-72-4
537 Modified-
ND
6.7
1.7
ng/L
1
N-ethylperfluoro-l-octanesulfonamide (EtFOSA)
4151-50-2
537 Modified-
ND
6.7
1.7
ng/L
1
N-ethylperfluoro-1-octanesulfonamidoacetic acid (EtFOSAA)
2991-50-6
537 Modified-
ND
6.7
1.7
ng/L
1
N-methylperfluoro-l-octanesulfonamide (MeFOSA)
31506-32-8
537 Modified-
ND
13
3.4
ng/L
1
N-methylperfluoro-l-octanesulfonamidoacetic acid (MeFOSAA)
2355-31-9
537 Modified-
ND
6.7
1.7
ng/L
1
Perfluoro-l-butanesulfonic acid (PFBS)
375-73-5
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluoro-1-decanesulfonic acid (PFDS)
335-77-3
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluoro-l-heptanesulfonic acid (PFHpS)
375-92-8
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluoro-l-nonanesulfonic acid (PFNS)
68259-12-1
537 Modified-
ND
6.7
1.7
ng/L
1
Perfluoro-l-octanesulfonamide (PFOSA)
754-91-6
537 Modified-
ND
6.7
1.7
ng/L
1
Perfluoro-l-pentanesulfonic acid (PFPeS)
2706-91-4
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluorohexanesulfonic acid (PFHxS)
355-46-4
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluoro-n-butanoic acid (PFBA)
375-22-4
537 Modified-
0.93
J
3.4
0.84
ng/L
1
Perfluoro-n-decanoic acid (PFDA)
335-76-2
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluoro-n-dodecanoic acid (PFDoA)
307-55-1
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluoro-n-heptanoic acid (PFHpA)
375-85-9
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluoro-n-hexanoic acid (PFHxA)
307-24-4
537 Modified-
1.9
J
3.4
0.84
ng/L
1
Perfluoro-n-nonanoic acid (PFNA)
375-95-1
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluoro-n-octanoic acid (PFDA)
335-67-1
537 Modified-
1.2
J
3.4
0.84
ng/L
1
Perfluoro-n-pentanoic acid (PFPeA)
2706-90-3
537 Modified-
1.4
J
3.4
0.84
ng/L
1
Perfluoro-n-tetradecanoic acid (PFTeDA)
376-06-7
537 Modified-
ND
6.7
1.7
ng/L
1
Perfluoro-n-tridecanoic acid (PFTrDA)
72629-94-8
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluoro-n-undecanoic acid (PFUdA)
2058-94-8
537 Modified-
ND
3.4
0.84
ng/L
1
Perfluorooctanesulfonic acid (PFOS)
1763-23-1
537 Modified-
1.3
J
3.4
0.84
ng/L
1
Surrogate Q %
13C2_4:2FTS
13C2 6:2FTS
13C2 8:2FTS
13C2_PFDoA
13C2_PFTeDA
13C3_PFBS
13C3_PFHxS
13C4_PFBA
13C4_PFHpA
13C5_PFHxA
13C5_PFPeA
13C6_PFDA
13C7_PFUdA
13C8_PFOA
Run 1 Acceptance
tecovery Limits
144
50-150
119
50-150
130
50-150
113
50-150
106
50-150
122
50-150
135
50-150
125
50-150
121
50-150
121
50-150
127
50-150
131
50-150
115
50-150
127
50-150
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit Q = Surrogate failure
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% J = Estimated result < LOQ and > DL L = LCS/LCSD failure
H = Out of holding time W = Reported on wet weight basis S = MS/MSD failure
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 5 of 24

PFAS by LC/MS/MS
Client: Duke Energy Laboratory ID:UE03003-001
Description: C_2_5.0 Matrix: Aqueous
Date Sampled:05/02/2019 0815 Project Name: Lake Norman SS
Date Received:05/03/2019 Project Number: J19050054
Run 1 Acceptance
Surrogate Q % Recovery Limits
13C8_PFOS
115
50-150
13C8_PFOSA
125
50-150
13C9_PFNA
130
50-150
d-EtFOSA
86
50-150
d5-EtFOSAA
111
50-150
d-McFOSA
83
50-150
d3-McFOSAA
111
50-150
LOQ = Limit of Quanttation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit Q = Surrogate failure
ND = Not Detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result - LOQ and > DL L = LCS/LCSD failure
H = Out of holding time W = Reported on wet weight basis 5 = MS/MSD failure
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 6 of 24

PFAS by LC/MS/MS
Client: Duke Energy Laboratory ID:UE03003-002
Description: E 2 9.5 Matrix: Aqueous
Date Sampled:05/0212019 0847 Project Name: Lake Norman SS
Date Received:0510312619 Project Number: J19050054
Run Prep Method Analytical Method
1 537 MOD 537 Modified -ID
Dilution Analysis Date Analyst
1 05/07/2019 1427 MMM
Prep Date Batch
05/06/2019 1306 15764
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Hexafluoropropylene oxide dinner acid (GenX)
13252-13-6
537 Modified-
ND
7.0
1.8
ng/L
1
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
39108-34-4
537 Modified-
ND
7.0
1.8
ng/L
1
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
27619-97-2
537 Modified-
ND
7.0
1.8
ng/L
1
11-1,11-1,21-1,21-1-perfluorododecane sulfonic acid (10:2 FTS)
120226-60-0
537 Modified-
ND
7.0
1.8
ng/L
1
1 H,1 H,2H,2H-per luorohexane sulfonic acid (4:2 FTS)
757124-72-4
537 Modified-
ND
7.0
1.8
ng/L
1
N-ethylperfluoro-l-octanesulfonamide (EtFOSA)
4151-50-2
537 Modified-
ND
7.0
1.8
ng/L
1
N-ethylperfluoro-l-octanesulfonamidoacetic acid (EtFOSAA)
2991-50-6
537 Modified-
ND
7.0
1.8
ng/L
1
N-methylperfluoro-l-octanesulfonamide (MeFOSA)
31506-32-8
537 Modified-
ND
14
3.5
ng/L
1
N-methylperfluoro-l-octanesulfonamidoacetic acid (MeFOSAA)
2355-31-9
537 Modified-
ND
7.0
1.8
ng/L
1
Pernuoro-l-butanesulfonic acid (PFBS)
375-73-5
537 Modified-
ND
3.5
0.88
ng/L
1
Perfluoro-l-decanesulfonic acid (PFDS)
335-77-3
537 Modified-
ND
3.5
0.88
ng/L
1
Perfluoro-l-heptanesulfonic acid (PFHpS)
375-92-8
537 Modified-
ND
3.5
0.88
ng/L
1
Perfluoro-l-nonanesulfonic acid (PFNS)
68259-12-1
537 Modified-
ND
7.0
1.8
ng/L
1
Perfuoro-l-octanesulfonamide (PFOSA)
754-91-6
537 Modified-
ND
7.0
1.8
ng/L
1
Perfluoro-l-pentanesulfonic acid (PFPeS)
2706-91-4
537 Modified-
ND
3.5
0.88
ng/L
1
Perfluorohexanesulfonic acid (PFHxS)
355-46-4
537 Modified-
ND
3.5
0.88
ng/L
1
Perfluoro-n-butanoic acid (PFBA)
375-22-4
537 Modified-
0.93 J
3.5
0.88
ng/L
1
Perfluoro-n-decanoic acid (PFDA)
335-76-2
537 Modified-
ND
3.5
0.88
ng/L
1
Perfluoro-n-dodecanoic acid (PFDoA)
307-55-1
537 Modified-
ND
3.5
0.88
ng/L
1
Perfuoro-n-heptanoic acid (PFHpA)
375-85-9
537 Modified-
ND
3.5
0.88
ng/L
1
Perfluoro-n-hexanoic acid (PFHxA)
307-24-4
537 Modified-
1.6 J
3.5
0.88
ng/L
1
Perfluoro-n-nonanoic acid (PFNA)
375-95-1
537 Modified-
ND
3.5
0.88
ng/L
1
Perfluoro-n-octanoic acid (PFDA)
335-67-1
537 Modified-
1.4 J
3.5
0.88
ng/L
1
Perfluoro-n-pentanoic acid (PFPeA)
2706-90-3
537 Modified-
1.4 J
3.5
0.88
ng/L
1
Perfluoro-n-tetradecanoic acid (PFTeDA)
376-06-7
537 Modified-
ND
7.0
1.8
ng/L
1
Perfluoro-n-tridecanoic acid (PFTeDA)
72629-94-8
537 Modified-
ND
3.5
0.88
ng/L
1
Perfluoro-n-undecanoic acid (PFUdA)
2058-94-8
537 Modified-
ND
3.5
0.88
ng/L
1
Perfluorooctanesulfonic acid (PFDS)
1763-23-1
537 Modified-
1.4 J
3.5
0.88
ng/L
1
Surrogate
Run 1
Q % Recovery
Acceptance
Limits
13C2_4:2FTS
143
50-150
13C2 6:2FTS
129
50-150
13C2 8:2FTS
130
50-150
13C2 PFDoA
116
50-150
13C2 PFTeDA
112
50-150
13C3 PFBS
122
50-150
13C3 PFHxS
124
50-150
13C4 PFBA
127
50-150
13C4_PFHpA
128
50-150
13C5 PFHxA
129
50-150
13C5 PFPeA
133
50-150
13C6 PFDA
134
50-150
13C7 PFUdA
131
50-150
13C8 PFOA
126
50-150
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit Q = Surrogate failure
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL L = LCS/LCSD failure
H = Out of holding time W = Reported on wet weight basis S = MS/MSD failure
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealyiab.com
Page 7 of 24

PFAS by LC/MS/MS
Client: Duke Energy Laboratory ID: UE03003-002
Description: E_2_9.5 Matrix: Aqueous
Date Sampled:05/0212019 0847 Project Name: Lake Norman SS
Date Received:05/03/2019 Project Number: J19050054
Surrogate
Run 1
Q % Recovery
Acceptance
Limits
13C8 PFOS
125
50-150
13C8 PFOSA
111
50-150
13C9 PFNA
131
50-150
d-EtFOSA
87
50-150
d5-EtFOSAA
124
50-150
d-McFOSA
94
50-150
d3-McFOSAA
126
50-150
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit Q = Surrogate failure
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL L = LCS/LCSD failure
H = Out of holding time W = Reported on wet weight basis S = MS/MSD failure
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 8 of 24

PFAS by LC/MS/MS
Client: Duke Energy Laboratory ID:UE03003-003
Description: F 2_11.5 Matrix: Aqueous
Date Sampled:05/02/2019 0952 Project Name: Lake Norman SS
Date Received:05/03/2019 Project Number: J19050054
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 537 MOD 537 Modified -ID 1 05/07/2019 1438 MMM 05/06/2019 1306 15764
CAS
Analytical
Parameter
Number
Method
Result
Q
LOQ
DL
Units
Run
Hexafluoropropylene oxide dinner acid (GenX)
13252-13-6
537 Modified-
NO
7.2
1.8
ng/L
1
1 H, 1 H, 2H, 2H-pernuorodecane sulfonic acid (8:2 FTS)
39108-34-4
537 Modified-
ND
7.2
1.8
ng/L
1
1 H. 1 H, 2H, 21-1-perfluorooctane sulfonic acid (6:2 FTS)
27619-97-2
537 Modified-
ND
7.2
1.8
ng/L
1
11-1,11-1,21-1,21-1-pernuorododecane sulfonic acid (10:2 FTS)
120226-60-0
537 Modified-
ND
7.2
1.8
ng/L
1
1H,11-1,21-1,21-1-pernuorohexane sulfonic acid (4:2 FTS)
757124-72-4
537 Modified-
ND
7.2
1.8
ng/L
1
N-ethylpernuoro-l-octanesulfonamide (EtFOSA)
4161-50-2
537 Modified-
ND
7.2
1.8
ng/L
1
N-ethylpernuoro-l-octanesulfonamidoacetic acid (EtFOSAA)
2991-50-6
537 Modified-
ND
7.2
1.8
ng/L
1
N-methylperfluoro-1-octanesulfonamide (MeFOSA)
31506-32-8
537 Modified-
ND
14
3.6
ng/L
1
N-methylperfluoro-1-octanesulfonamidoacetic acid (MeFOSAA)
2355-31-9
537 Modified-
ND
7.2
1.8
ng/L
1
Pernuoro-1-butanesulfonic acid (PFBS)
375-73-5
537 Modified-
ND
3.6
0.91
ng/L
1
Perfluoro-l-decanesulfonic acid (PFDS)
335-77-3
537 Modified-
ND
3.6
0.91
ng/L
1
Pernuoro-l-heptanesulfonic acid (PFHpS)
375-92-8
537 Modified-
ND
3.6
0.91
ng/L
1
Pernuoro-l-nonanesulfonic acid (PFNS)
68259-12-1
537 Modified-
ND
7.2
1.8
ng/L
1
Pernuoro-l-octanesulfonamide (PFOSA)
754-91-6
537 Modified-
ND
7.2
1.8
ng/L
1
Perfluoro-1-pentanesulfonic acid (PFPeS)
2706-91-4
537 Modified-
ND
3.6
0.91
ng/L
1
Perfluorohexanesulfonic acid (PFHxS)
355-46-4
537 Modified-
ND
3.6
0.91
ng/L
1
Pernuoro-n-butanoic acid (PFBA)
375-22-4
537 Modified-
ND
3.6
0.91
ng/L
1
Pernuoro-n-decanoic acid (PFDA)
335-76-2
537 Modified-
ND
3.6
0.91
ng/L
1
Pernuoro-n-dodecanoic acid (PFDoA)
307-55-1
537 Modified-
ND
3.6
0.91
ng/L
1
Perfluoro-n-heptanoic acid (PFHpA)
375-85-9
537 Modified-
ND
3.6
0.91
ng/L
1
Perfluoro-n-hexanoic acid (PFHxA)
307-24-4
537 Modified-
1.4
J
3.6
0.91
ng/L
1
Perfluoro-n-nonanoic acid (PFNA)
375-95-1
537 Modified-
ND
3.6
0.91
ng/L
1
Perfluoro-n-octanoic acid (PFOA)
335-67-1
537 Modified-
1.3
J
3.6
0.91
ngfL
1
Perfluoro-n-pentanoic acid (PFPeA)
2706-90-3
537 Modified-
1.3
J
3.6
0.91
ng/L
1
Perfluoro-n-tetradecanoic acid (PFTeDA)
376-06-7
537 Modified-
ND
7.2
1.8
ng/L
1
Perfluoro-n-tridecanoic acid (PFTrDA)
72629-94-8
537 Modified-
ND
3.6
0.91
ng/L
1
Perfluoro-n-undecanoic acid (PFUdA)
2058-94-8
537 Modified-
ND
3.6
0.91
ng/L
1
Perfiuorooctanesulfonic acid (PFOS)
1763-23-1
537 Modified-
1.4
J
3.6
0.91
ng/L
1
Run 1
Acceptance
Surrogate
Q % Recovery
Limits
13C2_4:2FTS
133
50-150
13C2 6:2FTS
131
50-150
13C2 8:2FTS
126
50-150
13C2 PFDoA
106
50-150
13C2 PFTeDA
104
50-150
13C3 PFBS
124
50-150
13C3 PFHxS
127
50-150
13C4 PFBA
123
50-150
13C4_PFHpA
115
50-150
13C5 PFHxA
130
50-150
13C5 PFPeA
125
50-150
13C6 PFDA
132
50-150
13C7 PFUdA
115
50-150
13C8 PFOA
125
50-150
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit Q = Surrogate failure
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL L = LCS/LCSD failure
H = Out of holding time W = Reported on wet weight basis S = MS/MSD failure
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 9 of 24

PFAS by LC/MS/MS
Client: Duke Energy Laboratory ID: UE03003.003
Description: F_2_11.5 Matrix: Aqueous
Date Sampled:05/02/2019 0952 Project Name: Lake Norman SS
Date Received:05/03/2019 Project Number: J19050054
Surrogate
Run
Q % Recovery
Acceptance
Limits
13C8 PFOS
130
50-150
13C8 PFOSA
104
50-150
13C9 PFNA
129
50-150
d-EtFOSA
90
50-150
d5-EtFOSAA
116
50-150
d-McFOSA
96
50-150
d3-McFOSAA
116
50-150
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit Q = Surrogate failure
NO = Not detected at or above the OIL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL L = LCS/LCSD failure
H = Out of holding time W = Reported on wet weight basis S = MS/MSD failure
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 10 of 24

PFAS by LC/MS/MS
Client: Duke Energy Laboratory ID:UE03003-004
Description: 1_3_MRSVINT Matrix: Aqueous
Date Sampled:0510212019 1200 Project Name: Lake Norman SS
Date Received:05103/2019 Project Number: J19050054
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 537 MOD 537 Modified -ID 1 05/07/2019 1448 MMM 05/06/2019 1306 15764
CAS
Analytical
Parameter
Number
Method
Result
Q
LOQ
DL
Units
Run
Hexafluoropropylene oxide dinner acid (GenX)
13252-13-6
537 Modified-
ND
6.7
1.7
ng/L
1
1 H, 1 H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
39108-34-4
537 Modified-
ND
6.7
1.7
ng/L
1
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
27619-97-2
537 Modified-
ND
6.7
1.7
ng/L
1
1H,1 H,2H,2H-perfluorododecane sulfonic acid (10:2 FTS)
120226-60-0
537 Modified-
ND
6.7
1.7
ng/L
1
1H,1H,2H,2H-perfluorohexane sulfonic acid (4:2 FTS)
757124-72-4
537 Modified-
ND
6.7
1.7
ng/L
1
N-ethylpernuoro-1-octanesulfonamide (EtFOSA)
4151-50-2
537 Modified-
ND
6.7
1.7
ng/L
1
N-ethylpernuoro-1-octanesulfonamidoacetic acid (EtFOSAA)
2991-50-6
537 Modified-
ND
6.7
1.7
ng/L
1
N-methylpernuoro-1-octanesulfonamide (MeFOSA)
31506-32-8
537 Modified-
ND
13
3.3
ng/L
1
N-methylperfluoro-1-octanesulfonamidoacetic acid (MeFOSAA)
2355-31-9
537 Modified-
ND
6.7
1.7
ng/L
1
Perfluoro-1-butanesulfonic acid (PFBS)
375-73-5
537 Modified-
ND
3.3
0.84
ng/L
1
Perfuoro-l-decanesulfonic acid (PFDS)
335-77-3
537 Modified-
ND
3.3
0.84
ng/L
1
Perfluoro-l-heptanesulfonic acid (PFHpS)
375-92-8
537 Modified-
ND
3.3
0.84
ng/L
1
Perfluoro-l-nonanesulfonic acid (PFNS)
68259-12-1
537 Modified-
ND
6.7
1.7
ng/L
1
Perfluoro-l-octanesulfonamide (PFOSA)
754-91-6
537 Modified-
ND
6.7
1.7
ng/L
1
Perfluoro-l-pentanesulfonic acid (PFPeS)
2706-91-4
537 Modified-
ND
3.3
0.84
ng/L
1
Perfluorohexanesulfonic acid (PFHxS)
355-46-4
537 Modified-
ND
3.3
0.84
ng/L
1
Perfluoro-n-butanoic acid (PFBA)
375-22-4
537 Modified-
0.93
J
3.3
0.84
ng/L
1
Pelfluoro-n-decanoic acid (PFDA)
335-76-2
537 Modified-
ND
3.3
0.84
ng/L
1
Perfluoro-n-dodecanoic acid (PFDoA)
307-55-1
537 Modified-
ND
3.3
0.84
ng/L
1
Perfluoro-n-heptanoic acid (PFHpA)
375-85-9
537 Modified-
ND
3.3
0.84
ng/L
1
Perfluoro-n-hexanoic acid (PFHxA)
307-24.4
537 Modified-
1.6
J
3.3
0.84
ng/L
1
Perfluoro-n-nonanoic acid (PFNA)
375-95-1
537 Modified-
ND
3.3
0.84
ng/L
1
Perfluoro-n-octanoic acid (PFDA)
335-67-1
537 Modified-
1.2
J
3.3
0.84
ng/L
1
Perfuoro-n-pentanoic acid (PFPeA)
2706-90-3
537 Modified-
1.4
J
3.3
0.84
ng/L
1
Perfluoro-n-tetradecanoic acid (PFTeDA)
376-06-7
537 Modified-
ND
6.7
1.7
ng/L
1
Perfluoro-n-tddecanoic acid (PFTrDA)
72629-94-8
537 Modified-
ND
3.3
0.84
ng/L
1
Perfluoro-n-undecanoic acid (PFUdA)
2058-94-8
537 Modred-
ND
3.3
0.84
ng/L
1
Perfluorooctanesulfonic acid (PFOS)
1763-23-1
537 Modified-
1.4
J
3.3
0.84
ng/L
1
Run 1 Acceptance
Surrogate Q % Recovery Limits
13C2_4:2FTS
141
50-150
13C2
6:2FTS
118
50-150
13C2
8:2FTS
123
50-150
13C2
PFDoA
105
50-150
13C2
PFTeDA
100
50-150
13C3
PFBS
120
50-150
13C3
PFHxS
129
50-150
13C4
PFBA
123
50-150
13C4_PFHpA
129
50-150
13C5
PFHxA
123
50-150
13C5
PFPeA
119
50-150
13C6
PFDA
118
50-150
13C7
PFUdA
117
50-150
13C8
PFDA
122
50-150
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit Q = Surrogate failure
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL L = LCS/LCSD failure
H = Out of holding time W = Reported on wet weight basis S = MS/MSD failure
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 11 of 24

PFAS by LC/MS/MS
Client: Duke Energy Laboratory ID:UE03003-004
Description: 1_3_MRSVINT Matrix: Aqueous
Date Sampled:05/02/2019 1200 Project Name: Lake Norman SS
Date Received:05/0312019 Project Number: J19050054
Run 1 Acceptance
Surrogate Q % Recovery Limits
13C8 PFOS
124
50-150
13C8 PFOSA
110
50-150
13C9 PFNA
116
50-150
d-EtFOSA
82
50-150
d5-EtFOSAA
117
50-150
d-McFOSA
86
50-150
d3-McFOSAA
118
50-150
LOQ = Limit of Quantita6on B = Detected in the method blank E = Quanlitalion of compound exceeded the calibration range DL = Detection Limit Q = Surrogate failure
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 46 % J = Estimated result < LOQ and > DL L = LCS/LCSD failure
H = Out of holding time W = Reported on wet weight basis S = MSIMSD failure
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 12 of 24

PFAS by LCIMS/MS
Client:Duke Energy Laboratory ID:UE03003-005
Description: E_2_9.5_FB Matrix: Aqueous
Date Sampled:0510212019 0847 Project Name: Lake Norman SS
Date Received:0510312019 Project Number: J19050054
Run Prep Method Analytical Method
1 537 MOD 537 Modified -ID
Dilution Analysis Date Analyst
1 05/07/2019 1459 MMM
Prep Date Batch
05/06/2019 1306 15764
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Hexafiuoropropylene oxide dimer acid (GenX)
13252-13-6
537 Modified-
ND
7.0
1.7
ng/L
1
1H, 1H, 2H, 21-1-pernuorodecane sulfonic acid (8:2 FTS)
39108-34-4
537 Modified-
ND
7.0
1.7
ng/L
1
1H, 1H, 2H, 2H-perfiuorooctane sulfonic acid (6:2 FTS)
27619-97-2
537 Modified-
ND
7.0
1.7
ng/L
1
1 H,1 H,2H,2H-perfluorododecane sulfonic acid (10:2 FTS)
120226-60-0
537 Modified-
ND
7.0
1.7
ng/L
1
1H,1H,2H,2H-perfluorohexane sulfonic acid (4:2 FTS)
757124-72-4
537 Modified-
ND Q
7.0
1.7
ng/L
1
N-ethylper0uoro-l-octanesulfonamide (EtFOSA)
4151-50-2
537 Modified-
ND
7.0
1.7
ng/L
1
N-ethylper0uoro-l-octanesulfonamidoacetic acid (EtFOSAA)
2991-50-6
537 Modified-
ND
7.0
1.7
ng/L
1
N-methylperfluoro-l-octanesulfonamide (MeFOSA)
31506-32-8
537 Modified-
ND
14
3.5
ng/L
1
N-methylperfluoro-l-octanesulfonamidoacetic acid (MeFOSAA)
2355-31-9
537 Modified-
ND
7.0
1.7
ng/L
1
Perfluoro-l-butanesulfonic acid (PFBS)
375-73-5
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluoro-l-decanesulfonic acid (PFDS)
335-77-3
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluoro-l-heptanesulfonic acid (PFHpS)
375-92-8
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluoro-l-nonanesulfonic acid (PFNS)
68259-12-1
537 Modified-
ND
7.0
1.7
ng/L
1
Perflucro-l-octanesulfonamide (PFOSA)
754-91-6
537 Modified-
ND
7.0
1.7
ng/L
1
Perfluoro-l-pentanesulfonic acid (PFPeS)
2706-91-4
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluorohexanesulfonic acid (PFHxS)
355-46-4
537 Modified-
ND
3.5
0.87
ng/L
1
Perfiuoro-n-butanoic acid (PFBA)
375-22-4
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluoro-n-decanoic acid (PFDA)
335-76-2
537 Modified-
ND
3.5
0.87
ng/L
1
Perflucro-n-dodecanoic acid (PFDoA)
307-55-1
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluoro-n-heptanoic acid (PFHpA)
375-85-9
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluoro-n-hexanoic acid (PFHxA)
307-24-4
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluoro-n-nonanoic acid (PFNA)
375-95-1
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluoro-n-octanoic acid (PFDA)
335-67-1
537 Modified-
ND
3.5
0.87
ng/L
1
Pernuoro-n-pentanoic acid (PFPeA)
2706-90-3
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluoro-n-tetradecanoic acid (PFTeDA)
376-06-7
537 Modified-
ND
7.0
1.7
ng/L
1
Perfluoro-n-tridecanoic acid (PFTrDA)
72629-94-8
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluoro-n-undecanoic acid (PFUdA)
2058-94-8
537 Modified-
ND
3.5
0.87
ng/L
1
Perfluorooctanesulfonic acid (PFDS)
1763-23-1
537 Modified-
ND
3.5
0.87
ng/L
1
Surrogate
Run 1
Q % Recovery
Acceptance
Limits
13C2_4:2FTS
N 154
50-150
13C2 6:2FTS
136
50-150
13C2 8:2FTS
149
50-150
13C2 PFDoA
124
50-150
13C2 PFTeDA
135
50-150
13C3 PFBS
140
50-150
13C3 PFHxS
138
50-150
13C4 PFBA
142
50-150
13C4_PFHpA
146
50-150
13C5 PFHxA
132
50-150
13C5 PFPeA
142
50-150
13C6 PFDA
132
50-150
13C7 PFUdA
145
50-150
13C8 PFOA
140
50-150
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit Q = Surrogate failure
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL L = LCS/LCSD failure
H = Out of holding time W = Reported on wet weight basis S = MS/MSD failure
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 13 of 24

PFAS by LC/MS/MS
Client: Duke Energy Laboratory ID:UE03003-005
Description: E 2 9.5_FB Matrix: Aqueous
Date Sampled:05/02/2019 0847 Project Name: Lake Norman SS
Date Received:05/03/2019 Project Number: J19050054
Surrogate
Run 1
Q % Recovery
Acceptance
Limits
13C8 PFOS
141
50-150
13C8 PFOSA
116
50-150
13C9 PFNA
140
50-150
d-EtFOSA
85
50-150
d5-EtFOSAA
136
50-150
d-McFOSA
94
50-150
d3-McFOSAA
133
50-150
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit Q = Surrogate failure
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL L = LCS/LCSD failure
H = Out of holding time W = Reported on wet weight basis S = MS/MSD failure
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 14 of 24

QC Summary
Shealy Environmental Services, Inc. QC Data for Lot Number: UE03003
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 15 of 24

PFAS by LC/MS/MS - MB
Sample ID: UQ15764-001
Batch:15764
Analytical Method: 537 Modified -ID
Matrix: Aqueous
Prep Method: 537 MOD
Prep Date: 05/06/2019 1306
Parameter
Result Q
Dil
LOQ
DL
Units
Analysis Date
GenX
ND
1
8.0
2.0
ng/L
05/07/2019 1147
8:2 FTS
ND
1
8.0
2.0
ng/L
05/07/2019 1147
6:2 FTS
ND
1
8.0
2.0
ng/L
05/07/2019 1147
10:2 FTS
ND
1
8.0
2.0
ng/L
05/07/2019 1147
4:2 FTS
ND
1
8.0
2.0
ri
05/07/2019 1147
EtFOSA
ND
1
8.0
2.0
ng/L
05/07/2019 1147
EtFOSAA
ND
1
8.0
2.0
ng/L
05/07/2019 1147
McFOSA
ND
1
16
4.0
ng/L
05/07/2019 1147
McFOSAA
ND
1
8.0
2.0
ng/L
05/07/2019 1147
PFBS
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFDS
ND
1
4.0
1.0
ng/L
05/07120191147
PFHpS
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFNS
ND
1
8.0
2.0
ng/L
05/07/2019 1147
PFOSA
ND
1
8.0
2.0
ng/L
05/07/2019 1147
PFPeS
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFHxS
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFBA
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFDA
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFDoA
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFHpA
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFHxA
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFNA
ND
1
4.0
1.0
ng/L
05107120191147
PFOA
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFPeA
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFTeDA
ND
1
8.0
2.0
ng/L
05/07/2019 1147
PFTeDA
ND
1
4.0
1.0
ng/L
05/07/2019 1147
PFUdA
ND
1
4.0
1.0
ng/L
05107/20191147
PFOS
ND
1
4.0
1.0
ng/L
05/07/2019 1147
Surrogate
Q % Rec
Acceptance
Limit
13C2 4:2FTS
135
50-150
13C2 6:2FTS
131
50-150
13C2 8:2FTS
139
50-150
13C2 PFDoA
132
50-150
13C2 PFTeDA
123
50-150
13C3 PFBS
128
50-150
13C3 PFHxS
135
50-150
13C4 PFBA
138
50-150
13C4_PFHpA
146
50-150
13C5 PFHxA
133
50-150
13C5 PFPeA
142
50-150
13C6 PFDA
136
50-150
LOQ = Limit of Quantitation P = The RPD between two GC columns exceeds 40 % N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL + = RPD is out of criteria
LOD = Limit of Detection ND = Not detected at or above the OIL
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Shealy Environmental Services, Inc. QC Data for Lot Number: UE03003
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 16 of 24

PFAS by LC/MS/MS - MB
Sample ID: UQ15764-001 Matrix: Aqueous
Batch:15764 Prep Method: 537 MOD
Analytical Method: 537 Modified -ID Prep Date: 05/06/2019 1306
Acceptance
Surrogate Q % Rec Limit
13C7 PFUdA
130
50-150
13C8 PFOA
135
50-150
13C8 PFOS
126
50-150
13C8 PFOSA
123
50-150
13C9 PFNA
141
50-150
d-EtFOSA
83
50-150
d5-EtFOSAA
128
50-150
d-McFOSA
89
50-150
d3-McFOSAA
126
50-150
LOQ = Limit of Quantitation P = The RPD between two GC columns exceeds 40 % N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOD and > DL + = RPD is out of criteria
LOD = Limit of Detection ND = Not detected at or above the DL
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Shealy Environmental Services, Inc. QC Data for Lot Number: UE03003
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 17 of 24

PFAS by LUMS/MS - LCS
Sample ID: UQ15764-002
Matrix: Aqueous
Batch:15764
Prep Method:
537 MOD
Analytical Method: 537 Modified -ID
Prep Date: 05/06/2019 1306
Spike
Amount
Result
% Rec
Parameter
(ng/L)
(ng/L) Q
Dil
% Rec
Limit
Analysis Date
GenX
40
38
1
95
70-150
05/07/2019 1158
8:2 FTS
19
24
1
123
70-150
05/07/2019 1158
6:2 FTS
19
20
1
106
70-150
05/07/2019 1158
10:2 FTS
19
19
1
101
70-150
05/07/2019 1158
4:2 FTS
19
18
1
98
70-150
05/07/2019 1158
EtFOSA
20
24
1
121
70-150
05/07/2019 1158
EtFOSAA
20
19
1
93
70-150
05/07120191158
McFOSA
20
24
1
118
70-150
05/07/2019 1158
McFOSAA
20
21
1
105
70-150
05/07/2019 1158
PFBS
18
18
1
104
70-150
05/07/2019 1158
PFDS
19
15
1
79
70-150
05/07/2019 1158
PFHpS
19
19
1
99
70-150
05/07/2019 1158
PFNS
19
16
1
83
70-150
05/07/2019 1158
PFOSA
20
23
1
114
70-150
05/07/2019 1158
PFPeS
19
20
1
104
70-150
05/07/2019 1158
PFHxS
18
18
1
98
70-150
05/07/2019 1158
PFBA
20
20
1
101
70-150
05/07/2019 1158
PFDA
20
19
1
96
70-150
05/07/2019 1158
PFDoA
20
20
1
102
70-150
05/07/2019 1158
PFHpA
20
20
1
102
70-150
05/07/2019 1158
PFHxA
20
21
1
106
70-150
05/07/2019 1158
PFNA
20
20
1
98
70-150
05/07/2019 1158
PFOA
20
21
1
106
70-150
05/07/2019 1158
PFPeA
20
19
1
97
70-150
05107/20191158
PFTeDA
20
20
1
101
70-150
05/07/2019 1158
PFTrDA
20
17
1
85
70-150
05/07/2019 1158
PFUdA
20
21
1
103
70-150
05107/20191158
PFOS
19
15
1
83
70-150
05107/20191158
Surrogate
Q % Rec
Acceptance
Limit
13C2
4:2FTS
141
50-150
13132
6:2FTS
132
50-150
13C2
8:2FTS
127
50-150
13C2
PFDoA
116
50-150
13C2
PFTeDA
88
50-150
13C3
PFBS
121
50-150
13C3
PFHxS
124
50-150
13C4
PFBA
133
50-150
13C4_PFHpA
133
50-150
13C5
PFHxA
123
50-150
13C5
PFPeA
136
50-150
13C6
PFDA
129
50-150
LOQ = Limit of Quantitation P = The RPD between two GC columns exceeds 40% N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOD and > DL + = RPD is out of criteria
LOD = Limit of Detection ND = Not detected at or above the DL
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Shealy Environmental Services, Inc. QC Data for Lot Number: UE03003
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 18 of 24

PFAS by LC/MS/MS - LCS
Sample ID: UQ15764-002 Matrix: Aqueous
Batch: 15764 Prep Method: 537 MOD
Analytical Method: 537 Modified -ID Prep Date: 05/06/2019 1306
Acceptance
Surrogate Q %, Rec Limit
13C7 PFUdA
121
50-150
13C8 PFOA
122
50-150
13C8 PFOS
137
50-150
13C8 PFOSA
109
50-150
13C9 PFNA
138
50-150
d-EtFOSA
62
50-150
d5-EtFOSAA
121
50-150
d-McFOSA
73
50-150
d3-McFOSAA
121
50-150
LOQ = Limit of Quantitation P = The RPD between two GC columns exceeds 40 % N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOD and > DL + = RPD is out of criteria
LOD = Limit of Detection ND = Not detected at or above the DL
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Shealy Environmental Services, Inc. QC Data for Lot Number: UE03003
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 19 of 24

PFAS by LC/MS/MS - LCSD
Sample ID: UQ15764-003 Matrix: Aqueous
Batch:15764 Prep Method: 537 MOD
Analytical Method: 537 Modified -ID Prep Date: 05/06/2019 1306
Spike
Amount
Result
% Rec
% RPD
Parameter
(ng/L)
(ng/L) Q
Dil
% Rec
% RPD
Limit
Limit
Analysis Date
GenX
40
41
1
103
8.0
70-150
30
05/07/2019 1209
8:2 FTS
19
20
1
106
14
70-150
30
05/07/2019 1209
6:2 FTS
19
18
1
95
11
70-150
30
05/07/2019 1209
10:2 FTS
19
17
1
88
13
70-150
30
05/07/2019 1209
4:2 FTS
19
19
1
104
6.1
70-150
30
05/07/2019 1209
EtFOSA
20
22
1
108
12
70-150
30
05107/20191209
EtFOSAA
20
19
1
94
1.5
70-150
30
05/07/2019 1209
McFOSA
20
25
1
126
7.1
70-150
30
05107/20191209
McFOSAA
20
20
1
102
2.8
70-150
30
05107/20191209
PFBS
18
16
1
93
11
70-150
30
05/07/2019 1209
PFDS
19
18
1
93
17
70-150
30
05/07/2019 1209
PFHpS
19
19
1
97
1.5
70-150
30
05/07/2019 1209
PFNS
19
17
1
86
3.3
70-150
30
05/07/2019 1209
PFOSA
20
19
1
95
18
70-150
30
05/07/2019 1209
PFPeS
19
17
1
92
12
70-150
30
05/07/2019 1209
PFHxS
18
16
1
90
8.3
70-150
30
05/07/2019 1209
PFBA
20
20
1
99
1.7
70-150
30
05/07/2019 1209
PFDA
20
18
1
91
4.6
70-150
30
05/07/2019 1209
PFDoA
20
20
1
102
0.068
70-150
30
05/07/2019 1209
PFHpA
20
19
1
97
4.9
70-150
30
05/07120191209
PFHxA
20
19
1
94
12
70-150
30
05107/20191209
PFNA
20
19
1
94
4.0
70-150
30
05/07/2019 1209
PFOA
20
19
1
93
13
70-150
30
05/07120191209
PFPeA
20
20
1
101
4.2
70-150
30
05107/20191209
PFTeDA
20
19
1
97
3.9
70-150
30
05/07/2019 1209
PFTrDA
20
19
1
93
8.9
70-150
30
05/07/2019 1209
PFUdA
20
22
1
108
5.0
70-150
30
05/07/2019 1209
PFOS
19
18
1
97
15
70-150
30
05/07/2019 1209
Acceptance
Surrogate Q %, Rec Limit
13C2 4:2FTS
132
50-150
13132 6:2FTS
132
50-150
13C2 8:2FTS
134
50-150
13C2 PFDoA
119
50-150
13C2 PFTeDA
113
50-150
13C3 PFBS
128
50-150
13C3 PFHxS
127
50-150
13C4 PFBA
133
50-150
13C4_PFHpA
131
50-150
13C5 PFHxA
128
50-150
13C5 PFPeA
130
50-150
13C6 PFDA
130
50-150
LOQ = Limit of Quantitation P = The RPD between two GC columns exceeds 40 % N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL + = RPD is out of criteria
LOD = Limit of Detection ND = Not detected at or above the DL
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Shealy Environmental Services, Inc. QC Data for Lot Number: UE03003
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 20 of 24

PFAS by LC/MS/MS - LCSD
Sample ID: UQ15764-003 Matrix: Aqueous
Batch: 15764 Prep Method: 537 MOD
Analytical Method: 537 Modified -ID Prep Date: 05/06/2019 1306
Surrogate
Q %, Rec
Acceptance
Limit
13C7 PFUdA
123
50-150
13C8 PFOA
128
50-150
13C8 PFOS
121
50-150
13C8 PFOSA
109
50-150
13C9 PFNA
137
50-150
d-EtFOSA
77
50-150
d5-EtFOSAA
128
50-150
d-McFOSA
72
50-150
d3-McFOSAA
118
50-150
LOQ = Limit of Quantitation P = The RPD between two GC columns exceeds 40 % N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL + = RPD is out of criteria
LOD = Limit of Detection ND = Not detected at or above the DL
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
QC Data for Lot Number: UE03003
Page 21 of 24

Chain of Custody
and
Miscellaneous Documents
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 22 of 24

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Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
Page 23 of 24
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try 20. Were client rernarksirequesEs (ix, requasW dilutions, MSIMSD designations, etc.,.)
ecrrecily traTtscribid from the COC_: into the comment seciion in LINIS?
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tnple(s) NA �" ere: received inc4rr�eUb Preserved And were adjusted nocording[y.
sumplc receiving +pith NA n1L Of ircle one: 112SO4, HNO3, HC[, Naol I using SR i. NA
ne of preservation NA If more, than ante l}rescrvative is nwdcd, please note in the oDmntents below.
NJA
SHEALY ENVIRONMENTAL SERVICES, INC.
W011:LvuwcwnW Sgrvice3; Ine.
1)ucunrerti Number: Mtr�xi BC-i d EfFctit�s Dutc- �,r3C15
Sumple Receipt Checklist (SRC.)
Client: DUKE ENERGY Cooler lnsueitcd by/date: L H 1 05-03-2019 Lot M-10003
Heartsoffocc!Pt, VI sr'3r_ n C'[ient F11 UPS li F£dPr f-1 nthe, NANA
❑ YesLL��"
1, Were custody'seals present on th+,: cooler?
p14 Strip TD: NA Chlorine Strip'�,rmeftt, %cre they intact rind unbroken?
(� Yes; Ifoustvdb�.:Lalr,Were
ID-. NA Tested by, AA
Wginal temperulurc upon receipt+ D&,iti-ed (Corrected) temperature upon receipt %So[id Snap-Crrp ID; NA
1.8 /1.8 aC TEA YNA T NA, INA QC NA tNA nC
Method; JZTemperaturc Blank [] srtst
aiBottles IRGrun TD: 5 IRGun Correction Factor: 0 OC
Method of coolant; 0 al 1c 11 Ice Packs. ❑ DnAce ® None
yes No L JNA. !, If temperature of any cooler erteet4t:16.0"C, was Proj W Manager Nali ficd?
PIM was Notified by.- phone, / r
I email � face -is -race (circle ortr).
❑ Yes ®Nn NA 4. I:s tha commercial c4ounier"s jucking slip attached to This form? -
No
166 Yes L] No
Yes © No
PT Yes, CINo
PT Yes/ QNo-
Yes' N[�
YesI ❑lr}'
El YYosl 0
5. Mere. p+romr custody pi+ucc;,luTLs (relingnish.t&rocr ived) fi+llowud?
6. Wurc sample ID& listed on the COC^
7, Were mrnple lDs listed on all sample ctmlaincas'-
1 1
8. Was cnllecllion date 1Cs time li.sl[W on the COC?
9. Was collection rhea R. tune listed an el[ sample conWn=,.,
1Q. Did ►ell (*ntniner label informatiai (In, date, rinse) agrex with the I
11. Were testR in be Performed li%Wd on the Coo?
12, Did all samples arrive in. the proper contehicrs for, raoh test and/or err good condition
(ultbzvUri, lids on, etc.)?
Was adequate sample vo[ume availabl a ?
14. W= all samples ry i.ed Kithin !1s the holding time or 48 horns, Whichever ounacs first?
15. Wem any ssmples containers missinp,exc_ess (circle one)-,4amples N2t listed on C OC7
O NA 16. Fzor V0A rand RSK-175 sarn*L weir hubblos present : "pca-s1ze" CA"err 6nxni in dlionrctcr)
irr U Y of the UA Vials?
NA 17. Were all DRUmetalshnutricnl samples re iyod1 at a ['H o(e 27
Vj
rn
lrlA 18, Were a][ cytuiidc samples received at a 1}I4> 12 and sulfide samples rerxivcd atit pl I 9?
9Yes 1 No 0
❑ Yes D No 0
Pr'eserva(ion
were rcmived ► ith bubbles 'i6 rnm in diameter,
imple-s(s) NA were raceiwd with TRC. , 0.5 mgrL (I
l usted ao ordingly in sample receiving Mjth sodium thiosulfate (NntS,L} with Shealy 1D. NA
'191t hereode labels appliod by: LKH- Date.- 05-04.nWlg
Shealy Environmental Services, Inc.
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.shealylab.com
11) is pro) and were
r_s
Page 24 of 24

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ATTACHMENT B

Attachment B
Clean Water Infiltration Source Monitoring Plan
Duke Energy - Marshall Steam Station
Terrell, North Carolina
ARCADIS I Iw�"0-MYaSSeu WMY
Constituent Pre airtup (April - DeSample Monthly Quarterly
cem7ber Alkalinity (SM-23205-2011)
Alkalinity, Bicarbonate
x
x
Alkalinity, Carbonate
x
x
Total Alkalinity as CaCO3
x
x
Other Constituents
Nitrite + Nitrate (EPA 353.2)
x
x
Phosphorus, total and dissolved (EPA 366.1)
x
I
x
Mercury, total and dissolved (EPA 1631 E)
x
x
Inorganic Ions (EPA 300.0)
Chloride
x
x
Fluoride
x
x
Sulfate
x
x
Sulfide
x
x
Total and Dissolved Metals (ICP EPA
200.7)
Aluminum
x
x
Barium
x
x
Boron
x
x
Calcium
x
x
Iron
x
x
Lithium
x
x
Magnesium
x
x
Manganese
x
x
Potassium
x
x
Sodium
x
x
Strontium
x
x
Hardness, total only
x
x
Zinc
x
x
Total and Dissolved Metals (ICP MS EPA 200.8)
Antimony
x
x
Arsenic
x
x
Beryllium
x
x
Cadmium (Low Level)
x
x
Chromium
x
x
Cobalt
x
x
Copper
x
x
Lead (Low Level)
x
x
Molybdenum
x
x
Nickel
x
x
Selenium
x
x
Silver (Low Level)
x
x
Thallium ( Low Level)
x
x
Vanadium (Low Level)
x
x
Geochemical and Water Quality Parameters
Total Dissolved Solids
x
x
Total Organic Carbon
x
x
Total Suspended Solids
x
x
pH
x
x
Dissolved Oxygen
x
x
Dissolved Oxygen Saturation
x
x
Oxidation Reduction Potential
x
x
Temperature
x
x
Specific Conductance
x
x
Page 1 of 2

Attachment B ��"Y
/aRC/�DIS
Clean Water Infiltration Source Monitoring Plan bu Sets
Duke Energy - Marshall Steam Station
Terrell, North Carolina
Constituent
Total Coliform
Pro -Startup (April - December)
Sample Quarterl
ly
x Monthly x
Fecal/E. Coli
x x
Unrelated Site Constituents
Total PCBs (EPA 8082)
x
x
Pesticides (EPA 8081)
x
x
VOCs (EPA 8260)
x
x
SVOCs (EPA 8270)
x
x
PFAS (EPA 537.1 aqueous)
x
x
Perfluorooctanesulfonic acid (PFOS)
x
x
Perfluoro-n-octanoic acid (PFOA)
x
x
Perfluoro-l-butanesulfonic acid (PFBS)
x
x
General Notes:
e If analytical results show consistent water quality below the applicable groundwater standards, a reduced sampling
program may be implemented for future operations.
b Unrelated site constituents, including select PFAS compounds, will be monitored at NCDEQ's request. These
constituents are unrelated to Duke Energy and the operations and activities at the Marshall Steam Station.
Acronyms and Abbreviations:
EPA = United States Environmental Protection Agency
NCDEQ = North Carolina Department of Environmental Quality
PFAS = per- and polyfluoroalkyl substances
PCB = polychlorinated biphenyl
SVOC = semi -volatile organic compound
VOC = volatile organic compound
Page 2of2