NC0086665_Renewal (Application)_20211007

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ROY COOPER I ,3 1.
Governor It it
ELIZABETH S.BISER \�*„.,
Secretary °."'"#
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
October 07, 2021
Duke Energy Carolinas LLC
Attn: Terry Tuck, General Manager II
240 Ernest Road
Reidsville, NC 27230
Subject: Permit Renewal
Application No. NC0086665
Rockingham County Combustion Turbine Facility
Rockingham County
Dear Applicant:
The Water Quality Permitting Section acknowledges the October 7, 2021 receipt of your permit renewal application and
supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW permitting
branch. Per G.S. 150B-3 your current permit does not expire until permit decision on the application is made.
Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit. The
permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a
timely manner to requests for additional information necessary to allow a complete review of the application and renewal
of the permit.
Information regarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker at:
https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker
If you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker.
Sincerely,
.�OluiYlc(�q�
—
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
ec: WQPS Laserfiche File w/application
DNorth Carolina Department of Environmental Quality Division of Water Resources
Winston Salem Regional Office 450 West Hanes Mill Road.Suite 300 Winston-Salem.North Carolina 27105
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336 776 9800

DUKERockingham County Combustion Turbine
ENERGY
Duke Energy Carolinas
240 Ernest Road
Reidsville, NC 27230
October 4,2021
Mr.Jeff Poupart
NC DENR/DWR/NPDES Unit
1617 Mail Services Center
Raleigh,NC 27699-1617 RECEIVED
Subject: Rockingham Combustion Turbine(CT)Station OCT 0 7 2021
National Pollutant Discharge Elimination System
NPDES Permit No.NC0086665
Rockingham County NCDEQ/DWR/NPDES
Permit Renewal Application-Minor
Dear Mr.Poupart:
Duke Energy Carolinas, LLC, (Duke) requests the subject permit be renewed and reissued. The above referenced
permit expires on April 30,2022. As mandated by North Carolina Administrative Code 15A NCAC 2H.0105(e),this
permit renewal is being submitted at least 180 days prior to expiration of the current permit.
Please find enclosed intriplicate,the renewal application,which includes the following items:
• EPA Form 1
• EPA Form 2C
• Site Map showing the location of outfall—Figure 1
• Rockingham Combustion Turbine Water Schematic Diagram
• Narrative description of sources of pollution and treatment technologies
• Data Summary Table
• Analytical Data Reports
Rockingham Combustion Turbine Station does not have a Sludge Management Plan. The oil and solids
accumulated in the Oil/Water Separator,OWS,is removed by a contractor for off-site recycling and disposal.
Cleaning of the OWS is performed,at a minimum,annually during site maintenance.
Duke Energy requests notification that this application is complete.
Should you have any questions regarding this submittal or require additional information,please contact Joyce
Dishmon at 336-623-0238 or email [e-mail].
I certify under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system,
or those persons directly responsible for gathering the information, the information submitted is, to the best
of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties
for submitting false information, including the possibility of fines and imprisonment for knowing violations
Sincerely,
Terry Tuck
GM II—Regulated Stations
Dan River Combined Cycle

Attachments
Cc:Lon Snider—WSRO,450 West Hanes Mill Road,Suite 300,Winston-Salem,NC 27105
Joyce Dishmon/Filenet-via email
Willam Milam—via email
Shannon Langley—via email

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion OMB No.2040-0004
Form U.S.Environmental Protection Agency
1 .- EPA Application for NPDES Permit to Discharge Wastewater
NPDES GENERAL INFORMATION
SECTION 1.ACTIVITIES REQUIRING AN NPDES PERMIT(40 CFR 122.21(f)and(f)(1))
1.1 Applicants Not Required to Submit Form 1
Is the facility a new or existing publicly owned Is the facility a new or existing treatment works
1.1.1 treatment works? 1.1.2 treating domestic sewage?
If yes,STOP. Do NOT complete ❑✓ No If yes,STOP. Do NOT ✓❑ No
Form 1.Complete Form 2A. complete Form 1.Complete
Form 2S.
1.2 Applicants Required to Submit Form 1
1.2.1 Is the facility a concentrated animal feeding 1.2.2 Is the facility an existing manufacturing,
operation or a concentrated aquatic animal commercial,mining,or silvicultural facility that is
a. production facility? currently discharging process wastewater?
nYes 4 Complete Form 1 D No ✓❑ Yes 4 Complete Form ❑ No
a- and Form 2B. 1 and Form 2C.
R 1.2.3 Is the facility a new manufacturing,commercial, 1.2.4 Is the facility a new or existing manufacturing,
mining,or silvicultural facility that has not yet commercial,mining,or silvicultural facility that
commenced to discharge? discharges only nonprocess wastewater?
EI Yes 4 Complete Form 1 ❑✓ No Yes 4 Complete Form No
cc and Form 2D. 1 and Form 2E.
w 1.2.5 Is the facility a new or existing facility whose
discharge is composed entirely of stormwater
associated with industrial activity or whose
discharge is composed of both stormwater and
non-stormwater?
❑ Yes 4 Complete Form 1 No
and Form 2F
unless exempted by
40 CFR
122.26(b)(14)(x)or
b 15 .
SECTION 2.NAME,MAILING ADDRESS,AND LOCATION(40 CFR 122.21(f)(2))
2.1 Facility Name
Rockingham Combustion Turbine Station
0 2.2 EPA Identification Number
U
0 NCR000012930
2.3 Facility Contact
Name(first and last) Title Phone number
-0 Terry Tuck GM II-Regulated Stations [phone]
Email address
[e-mail]
2.4 Facility Mailing Address
Street or P.O.box
240 Ernest Drive
City or town State ZIP code
Reidsville NC 27320
EPA Form 3510-1(revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion OMB No.2040-0004
u 2.5 Facility Location
a' ` Street,route number,or other specific identifier
< U 240 Ernest Drive
rn
0 County name County code(if known)
Rockingham 079
E o City or town State ZIP code
g Reidsville NC 27320
SECTION 3.SIC AND NAICS CODES(40 CFR 122.21(f)(3))
3.1 SIC Code(s) Description(optional)
4911
U -
N
3.2 NAICS Code(s) Description(optional)
221112
U
SECTION 4.OPERATOR INFORMATION(40 CFR 122.21(f)(4))
4.1 Name of Operator
Duke Energy Carolinas,LLC
0 4.2 Is the name you listed in Item 4.1 also the owner?
E ✓❑ Yes ❑ No
4.3 Operator Status
as
❑ Public—federal ❑Public—state ❑ Other public(specify)
0 Private ❑ Other(specify)
4.4 Phone Number of Operator
[phone]
4.5 Operator Address
Street or P.O.Box
E -0 i a 240 Ernest Drive
g o
r City or town State ZIP code
o V Reidsville NC 27320
co Email address of operator
0 [e-mail]
SECTION 5.INDIAN LAND(40 CFR 122.21(f)(5))
c to c 5.1 Is the facility located on Indian Land?
:CI
❑Yes El No
EPA Form 3510-1(revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion OMB No.2040-0004
SECTION 6.EXISTING ENVIRONMENTAL PERMITS(40 CFR 122.21(f)(6))
6.1 Existing Environmental Permits(check all that apply and print or type the corresponding permit number for each)
m NPDES(discharges to surface ❑ RCRA(hazardous wastes) ❑ UIC(underground injection of
o water) fluids)
NC0086665 NCR000012930
E
w a ❑ PSD(air emissions) ElNonattainment program(CM) ❑✓ NESHAPs(CM)
crs
08731T15
X ❑ Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section 404) ❑✓ Other(specify)
FRPO4NC440-Facility Response
SECTION 7.MAP(40 CFR 122.21(f)(7))
7.1 Have you attached a topographic map containing all required information to this application?(See instructions for
A specific requirements.)
2
✓❑Yes ❑ No ❑ CAFO—Not Applicable(See requirements in Form 2B.)
SECTION 8.NATURE OF BUSINESS(40 CFR 122.21(f)(8))
8.1 Describe the nature of your business.
The plant consists of five simple cycle gas turbine generator units producing approximately 180 megawatts each for a
total generating capacity of approximately 900 megawatts. The primary fuel consumed is natural gas,with#2 diesel
fuel as a secondary fuel. Raw water is processed through portable demineralizer trailers and stored in a 1.4 million
gallon tank.
co
"6
During the operation of the units,demineralized water is injected into the units for NOx control.
z The plant is dispatched for peaking and back-up power to support the regulated Duke Energy system.
SECTION 9.COOLING WATER INTAKE STRUCTURES(40 CFR 122.21(f)(9))
9.1 Does your facility use cooling water?
❑ Yes ✓❑ No 4 SKIP to Item 10.1.
B9.2 Identify the source of cooling water.(Note that facilities that use a cooling water intake structure as described at
40 CFR 125, Subparts I and J mayhave additional application requirements at 40 CFR 122.21(r).Consult with your
c, P PP q
o NPDES permitting authority to determine what specific information needs to be submitted and when.)
o ,�
SECTION 10.VARIANCE REQUESTS(40 CFR 122.21(f)(10))
10.1 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(m)?(Check all that
apply.Consult with your NPDES permitting authority to determine what information needs to be submitted and
d when.)
❑ Fundamentally different factors(CWA ❑ Water quality related effluent limitations(CWA Section
d Section 301(n)) 302(b)(2))
as
❑ Non-conventional pollutants(CWA ❑ Thermal discharges(CWA Section 316(a))
Section 301(c)and(g))
❑✓ Not applicable
EPA Form 3510-1(revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbi +
OMB No.2040-0004
SECTION 11.CHECKLIST AND CERTIFICATION STATEMENT(40 CFR 122.22(a)and(d))
11.1 In Column 1 below,mark the sections of Form 1 that you have completed and are submitting with your application.
For each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority.Note
that not all applicants are required to provide attachments.
Column 1 Column 2
✓ Section 1:Activities Requiring an NPDES Permit ❑ w/attachments
❑ q 9
❑✓ Section 2:Name,Mailing Address,and Location ❑ w/attachments
❑✓ Section 3: SIC Codes ❑ wl attachments
✓❑ Section 4:Operator Information ❑ w/attachments
❑✓ Section 5: Indian Land ❑ wl attachments
❑✓ Section 6: Existing Environmental Permits ❑ wl attachments
w/topographic
❑✓ Section 7:Map ✓❑ ❑ w/additional attachments
a map
c ❑✓ Section 8:Nature of Business ❑ w/attachments
47. ✓❑ Section 9:Cooling Water Intake Structures ❑ w/attachments
❑✓ Section 10:Variance Requests ❑ w/attachments
❑✓ Section 11:Checklist and Certification Statement ✓❑ w/attachments
C.)
11.2 Certification Statement
U
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision
in accordance with a system designed to assure that qualified personnel properly gather and evaluate the
information submitted.Based on my inquiry of the person or persons who manage the system,or those persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief,true,accurate,and complete.I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations.
Name(print or type first and last name) Official title
Terry Tuck GM II-Regulated Stations
Signature 1 ' Date signed / 1
EPA Form 3510-1(revised 3-19) Page 4

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine OMB No.2040-0004
Form U.S.Environmental Protection Agency
2C 1-.EPA Application for NPDES Permit to Discharge Wastewater
NPDES EXISTING MANUFACTURING,COMMERCIAL, MINING,AND SILVICULTURE OPERATIONS
SECTION 1.OUTFALL LOCATION(40 CFR 122.21(g)(1))
1.1 Provide information on each of the facility's outfalls in the table below.
c Numbelr Receiving Water Name Latitude Longitude
.�
001 Unnamed Tributary of Litt 36' 19' 42" N 79' 49' 45 W
� o 0
0
SECTION 2.LINE DRAWING(40 CFR 122.21(g)(2))
2.1 Have you attached a line drawing to this application that shows the water flow through your facility with a water
balance?(See instructions for drawing requirements.See Exhibit 2C-1 at end of instructions for example.)
❑✓ Yes ❑ No
SECTION 3.AVERAGE FLOWS AND TREATMENT(40 CFR 122.21(g)(3))
3.1 For each outfall identified under Item 1.1. provide average flow and treatment information.Add additional sheets if
necessary.
*''Outfall Number** 001
Operations Contributing to Flow
Operation Average Flow
Low Volume Wastewater-monthly avg 0.001 mgd
Stormwater-monthly avg,event driven 0.01 mgd
FL mgd
mgd
0 Treatment Units
("3 Code Code from Final Disposal of Solid or
(include size,flow rate through each treatment unit, Liquid Wastes Other Than
aretention time,etc.) Table 2C-1 by Discharge
Oil/Water Separator with Coalescing Filter 2-K Oil-Recycle
11,600 gallon capacity/flow rate is episodic
EPA Form 3510-2C(Revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine OMB No.2040-0004
3.1 **Outfall Number**
cont. Operations Contributing to Flow
Operation Average Flow
mgd
mgd
mgd
mgd
Treatment Units
Description Final Disposal of Solid or
(include size,flow rate through each treatment unit, Code from Liquid Wastes Other Than
retention time,etc.) Table 2C 1 by Discharge
C
0
C
N
f0
41
1-
**Outfall Number**
Operations Contributing to Flow
Operation Average Flow
mgd
a' mgd
mgd
mgd
Description Code from Final Disposal of Solid or
(include size,flow rate through each treatment unit, Table 2C 1 Liquid Wastes Other Than
retention time,etc.) by Discharge
3.2 Are you applying for an NPDES permit to operate a privately owned treatment works?
d ❑ Yes ✓❑ No 4 SKIP to Section 4.
3.3 Have you attached a list that identifies each user of the treatment works?
❑ Yes ❑ No
EPA Form 3510-2C(Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine OMB No.2040-0004
SECTION 4.INT RMITTENT FLOWS(40 CFR 122.21(g)(4))
4.1 Except for storm runoff,leaks,or spills,are any discharges described in Sections 1 and 3 intermittent or seasonal?
El Yes ❑ No 4 SKIP to Section 5.
4.2 Provide information on intermittent or seasonal flows for each applicable outfall.Attach additional pages,if necessary.
Outfall Operation Frecuency Flow Rate
Number (list) Average Average Long-Term Maximum Duration
Days/Week Months/Year Average Daily
Low Volume/Stormwat 4 days/week 12 months/year 0.0164 mgd 0.155 mgd 0.04 days
001 days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year mgd mgd days
SECTION 5.PRODUCTION(40 CFR 122.21(g)(5))
5.1 Do any effluent limitation guidelines(ELGs)promulgated by EPA under Section 304 of the CWA apply to your facility?
❑ Yes ✓❑ No 4 SKIP to Section 6.
5.2 Provide the following information on applicable ELGs.
w ELG Category ELG Subcategory Regulatory Citation
d
03
R
.Q
O.
5.3 Are any of the applicable ELGs expressed in terms of production(or other measure of operation)?
❑ Yes ❑ No 4 SKIP to Section 6.
as 5.4 Provide an actual measure of daily production expressed in terms and units of applicable ELGs.
Outfall Unit of
Number Operation,Product,or Material Quantity per Day-10 Measure
l6
co
0 O
O
V
a
EPA Form 3510-2C(Revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine OMB No.2040-0004
SECTION 6.IMPROVEMENTS(40 CFR 122.21(g)(6))
6.1 Are you presently required by any federal,state,or local authority to meet an implementation schedule for constructing,
upgrading,or operating wastewater treatment equipment or practices or any other environmental programs that could
affect the discharges described in this application?
❑ Yes ✓❑ No 4 SKIP to Item 6.3.
6.2 Briefly identify each applicable project in the table below.
Affected Final Compliance Dates
E Brief Identification and Description of Outfalls Source(s)of
Project (list outfall Discharge Required Projected
number)
E
V
C
N
C)
V
R
a)
6.3 Have you attached sheets describing any additional water pollution control programs(or other environmental projects
that may affect your discharges)that you now have underway or planned?(optional item)
❑ Yes ❑ No ✓❑ Not applicable
SECTION 7.EFFLUENT AND INTAKE CHARACTERISTICS(40 CFR 122.21(g)(7))
See the instructions to determine the pollutants and parameters you are required to monitor and,in turn,the tables you must
complete. Not all applicants need to complete each table.
Table A.Conventional and Non-Conventional Pollutants
7.1 Are you requesting a waiver from your NPDES permitting authority for one or more of the Table A pollutants for any of
your outfalls?
❑ Yes ❑✓ No 4 SKIP to Item 7.3.
7.2 If yes,indicate the applicable outfalls below.Attach waiver request and other required information to the application.
Outfall Number Outfall Number Outfall Number
7.3 Have you completed monitoring for all Table A pollutants at each of your outfalls for which a waiver has not been
N requested and attached the results to this application package?
El Yes ❑ No;a waiver has been requested from my NPDES
permitting authority for all pollutants at all outfalls.
Table B.Toxic Metals,Cyanide,Total Phenols,and Organic Toxic Pollutants
x 7.4 Do any of the facility's processes that contribute wastewater fall into one or more of the primary industry categories
listed in Exhibit 2C-3?(See end of instructions for exhibit.)
❑ Yes ✓❑ No 4 SKIP to Item 7.8.
co
3 7.5 Have you checked"Testing Required"for all toxic metals,cyanide, and total phenols in Section 1 of Table B?
w
❑ Yes ❑ No
7.6 List the applicable primary industry categories and check the boxes indicating the required GC/MS fraction(s)identified
in Exhibit 2C-3.
Primary Industry Category Required GCIMS Fraction(s)
(Check applicable boxes.)
❑Volatile 0 Acid 0 Base/Neutral 0 Pesticide
❑Volatile 0 Acid 0 Base/Neutral 0 Pesticide
0 Volatile 0 Acid 0 Base/Neutral 0 Pesticide
EPA Form 3510-2C(Revised 3-19) Page 4

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine OMB No.2040-0004
7.7 Have you checked"Testing Required"for all required pollutants in Sections 2 through 5 of Table B for each of the
GC/MS fractions checked in Item 7.6?
❑✓ Yes ❑ No
7.8 Have you checked"Believed Present"or"Believed Absent"for all pollutants listed in Sections 1 through 5 of Table B
where testing is not required?
✓❑ Yes ❑ No
7.9 Have you provided(1)quantitative data for those Section 1,Table B,pollutants for which you have indicated testing is
required or(2)quantitative data or other required information for those Section 1,Table B,pollutants that you have
indicated are"Believed Present"in your discharge?
✓❑ Yes ❑ No
7.10 Does the applicant qualify for a small business exemption under the criteria specified in the instructions?
❑ Yes 4 Note that you qualify at the top of Table B, ❑✓ No
then SKIP to Item 7.12.
7.11 Have you provided(1)quantitative data for those Sections 2 through 5,Table B,pollutants for which you have
o determined testing is required or(2)quantitative data or an explanation for those Sections 2 through 5,Table B,
pollutants you have indicated are"Believed Present"in your discharge?
Yes ❑ No
Table C.Certain Conventional and Non-Conventional Pollutants
12 7.12 Have you indicated whether pollutants are"Believed Present"or"Believed Absent"for all pollutants listed on Table C
for all outfalls?
c)
✓❑ Yes ❑ No
c 7.13 Have you completed Table C by providing(1)quantitative data for those pollutants that are limited either directly or
indirectly in an ELG and/or(2)quantitative data or an explanation for those pollutants for which you have indicated
"Believed Present"?
ElYes ❑ No
w Table D.Certain Hazardous Substances and Asbestos
7.14 Have you indicated whether pollutants are"Believed Present"or"Believed Absent"for all pollutants listed in Table D for
all outfalls?
O Yes ❑ No
7.15 Have you completed Table D by(1)describing the reasons the applicable pollutants are expected to be discharged
and(2)by providing quantitative data,if available?
❑✓ Yes ❑ No
Table E.2,3,7,8-Tetrachlorodibenzo-p-Dioxin(2,3,7,8-TCDD)
7.16 Does the facility use or manufacture one or more of the 2,3,7,8-TCDD congeners listed in the instructions,or do you
know or have reason to believe that TCDD is or may be present in the effluent?
❑ Yes 4 Complete Table E. ❑✓ No 4 SKIP to Section 8.
7.17 Have you completed Table E by reporting qualitative data for TCDD?
❑ Yes ❑ No
SECTION 8.USED OR MANUFACTURED TOXICS(40 CFR 122.21(g)(9))
8.1 Is any pollutant listed in Table B a substance or a component of a substance used or manufactured at your facility as
d an intermediate or final product or byproduct?
r ❑ Yes El No SKIP to Section 9.
V
3 8.2 List the pollutants below.
c
o 1. 4. 7.
2. 5. 8.
3. 6. 9.
EPA Form 3510-2C(Revised 3-19) Page 5

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine OMB No.2040-0004
SECTION 9.BIOLOGICAL TOXICITY TESTS(40 CFR 122.21(g)(11))
9.1 Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made
within the last three years on(1)any of your discharges or(2)on a receiving water in relation to your discharge?
❑✓ Yes ❑ No 4 SKIP to Section 10.
9.2 Identify the tests and their durposes below.
Test(s) Purpose of Test(s) Submitted to NPDES Date Submitted
o Permitting Authority?
Whole Effluent Toxicity NPDES Permit ✓❑ Yes ❑ No 02/22/2021
c.)
Testing Requirement-Outfall 001
16
❑ Yes ❑ No
❑ Yes ❑ No
SECTION 10.CONTRACT ANALYSES(40 CFR 122.21(g)(12))
10.1 Were any of the analyses reported in Section 7 performed by a contract laboratory or consulting firm?
❑✓ Yes ❑ No 4 SKIP to Section 11.
10.2 Provide information for each contract laboratory or consulting firm below.
Laboratory Number 1 Laboratory Number 2 Laboratory Number 3
Name of laboratory/firm Pace Analytical Services,LLC Pace Analytical Services,LLC Meritech,Inc.
N
Laboratory address 205 E.Meadow Road 9800 Kincey Avenue 642 Tamco Road
Eden,NC 27288 Huntersville,NC 28078/ Reidsville,NC 27320
2225 Riverside Drive
Asheville,NC 28804
0 Phone number
[phone] [phone] [phone]
Pollutant(s)analyzed Turbidity,TSS Temperature,BTEX/COD,TOC, WET Testing,Acute
Ammonia,Zn,Fe
SECTION 11.ADDITIONAL INFORMATION(40 CFR 122.21(g)(13))
11.1 Has the NPDES permitting authority requested additional information?
o ElYes ❑✓ No 4 SKIP to Section 12.
11.2 List the information requested and attach it to this application.
L
0
1. 4.
0
2. 5.
3. 6.
EPA Form 3510-2C(Revised 3-19) Page 6

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine OMB No.2040-0004
SECTION 12.CHECKLIST AND CERTIFICATION STATEMENT(40 CFR 122.22(a)and(d))
12.1 In Column 1 below,mark the sections of Form 2C that you have completed and are submitting with your application.
For each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority.Note
that not all applicants are required to complete all sections or provide attachments.
Column 1 Column 2
✓❑ Section 1:Outfall Location ✓❑ w/attachments
❑✓ Section 2:Line Drawing ✓❑ w/line drawing ❑ w/additional attachments
Section 3:Average Flows and w/list of each user of
❑ Treatment El w/attachments ❑ privately owned treatment
works
❑✓ Section 4: Intermittent Flows ❑ w/attachments
❑ Section 5: Production ❑ w/attachments
w/optional additional
ElSection 6: Improvements Elw/attachments ❑ sheets describing any
additional pollution control
plans
❑ w/request for a waiver and ❑ w/explanation for identical
supporting information outfalls
•d w/small business exemption
❑ request ❑ w/other attachments
N ❑ Section 7: Effluent and Intake ✓❑ w/Table A ✓❑ w/Table B
Characteristics
0
.0 0 w/Table C ✓❑ w/Table D
✓❑ w/Table E ❑✓ w/analytical results as an
attachment
❑
Section 8:Used or Manufactured ❑ w/attachments
Toxics
Section 9: Biological Toxicity
✓❑ Tests ❑ w/attachments
U
✓❑ Section 10:Contract Analyses ❑ w/attachments
❑ Section 11:Additional Information ❑ w/attachments
❑ Section 12:Checklist and ❑ w/attachments
Certification Statement
12.2 Certification Statement
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in
accordance with a system designed to assure that qualified personnel properly gather and evaluate the information
submitted.Based on my inquiry of the person or persons who manage the system,or those persons directly
responsible for gathering the information,the information submitted is, to the best of my knowledge and belief, true,
accurate,and complete. I am aware that there are significant penalties for submitting false information,including the
possibility of fine and imprisonment for knowing violations.
Name(print or type first and last name) Official title
Terry Tuck GM II-Regulated Stations
Signature Date signed /
/o /y( 01-f
EPA Form 3510-2C(Revised 3-19) Page 7

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbinb 001 OMB No.2040-0004
TABLE A.CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS(40 CFR 122.21(g)(7)(iii))1
Effluent Intake
Waiver (Optional)
Units Maximum Maximum Long-Term
Pollutant Requested
(if applicable) (specify) Daily Monthly Average Daily Number of Long-Term Number of
Discharge Discharge Discharge Analyses Average Value Analyses
(required) (if available) (if available)
❑ Check here if you have applied to your NPDES permitting authority for a waiver for all of the pollutants listed on this table for the noted outfall.
Biochemical oxygen demand Concentration
1' ❑(BOD5)
Mass
Chemical oxygen demand Concentration
2' ❑
(COD)
Mass
Concentration
3. Total organic carbon(TOC) ❑
Mass
Concentration mg/L 2.6 1 2.6 1
4. Total suspended solids(TSS) ✓❑
Mass lbs/day 0.09 1
Concentration
5. Ammonia(as N) 0
Mass
6. Flow ✓❑ Rate MGD 0.004
Temperature(winter) ❑ °C °C
7.
Temperature(summer) ✓❑ °C °C 24.7 24.7 1
pH(minimum) ✓❑ Standard units s.u. 1
8.
pH(maximum) ✓❑ Standard units s.u. 1
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C(Revised 3-19) Page 9

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbinb 001 OMB No.2040-0004
TABLE A.CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS(40 CFR 122.21(g)(7)(iii))1
Effluent Intake
Waiver (Optional)
Pollutant Requested Units Maximum Maximum Long-Term
(if applicable) (specify) Daily Monthly Average Daily Number of Long-Term Number of
Discharge Discharge Discharge Analyses Average Value Analyses
(required) (if available) (if available)
❑ Check here if you have applied to your NPDES permitting authority for a waiver for alI of the pollutants listed on this table for the noted outfall.
Biochemical oxygen demand Concentration mg/L 2.4 1 2.4 1
1' ❑
(BOD5) Mass lbs/day 0.22 1
Chemical oxygen demand Concentration mg/L 57.3 1 5.73 1
2' ❑
(COD) Mass lbs/day 5.25 1
Concentration mg/L 10.1 1 10.1 1
3. Total organic carbon(TOC) ❑
Mass lbs/day 0.926 1
Concentration
4. Total suspended solids(TSS) ❑
Mass
Concentration mg-N/L <0.1 1 <0.1 1
5. Ammonia(as N) 0
Mass Ibs/day <0.001 1
6. Flow ❑ Rate MGD 0.011 1
Temperature(winter) ❑ °C °C 1
7.
Temperature(summer) ❑ °C °C
pH(minimum) ❑ Standard units S.U. 6.68 1
8.
pH(maximum) ❑ Standard units S.U. 6.68 1
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C(Revised 3-19) Page 9

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent
(optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number 1
Present Absent Daily Monthly Term
Discharge Discharge Daily °f Average of
(required) (if available) Discharge Analyses Value Analyses
(if available)
❑ Check here if you qualify as a small business per the instructions to Form 2C and,therefore,do not need to submit quantitative data for any of the organic toxic pollutants in Sections
2 through 5 of this table. Note,however,that you must still indicate in the appropriate column of this table if you believe any of the pollutants listed are present in your discharge.
Section 1.Toxic Metals,Cyanide,and Total Phenols
Antimony,total Concentration
1.1 (7440-36-0) Mass
1 2 Arsenic,total ✓0 Concentration
(7440-38-2) Mass
Beryllium,total � 0 ❑ Concentration
1.3 (7440-41-7) Mass
Cadmium,total El
1.4 (7440-43-9) Mass
Chromium,total � Concentration
1.5 (7440-47-3) Mass
Copper,total Concentration
1.6 (7440-50-8) 0 El Mass
Lead,total Concentration
1.7 0 ElEl
(7439-92-1) Mass
Mercury,total ❑ Concentration
1.8 (7439-97-6) Mass
1.9 Nickel,total Concentration
(7440-02-0) Mass
Selenium,total Concentration
1.10 (7782-49-2) El El Mass
Silver,total Concentration
1.11 (7440-22-4) 0 El Mass
EPA Form 3510-2C(Revised
3-19) Page 11

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))l
Presence or Absence Intake
(check one) Effluent
(optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed ' Believed Maximum Maximum Long
q (specify) Average Number Number
Present Absent Daily Monthly Term
aily of of
Discharge
Discharge(if available) DisDcharge Analyses AverageValue Analyses
(if available)
Thallium,total Concentration
1.12 0 El
(7440-28-0) Mass
1.13 Zinc,total 0 Concentration mg/i. 0.0391 1 0.389 i
0 0
(7440-66-6) Mass lbs/day 0.0004 1
1.14 Cyanide,total 0 0 Concentration
(57-12-5) Mass
1.15 Phenols,total Concentration
Mass
Section 2.Organic Toxic Pollutants(GC/MS Fraction—Volatile Compounds)
21 Acrolein 0 Concentration
0 El
(107-02-8) Mass
2.2 Acrylonitrile 0 Concentration
0 0
(107-13-1) Mass
Benzene Concentration mg/I <0.001 1 <0.001 1
2.3 0 00
(71-43-2) Mass lbs/day 0.00003 1
Bromoform 0 Concentration
2.4 0 El
(75-25-2) Mass
2.5 Carbon tetrachloride 0 0 Concentration
El
(56-23-5) Mass
Chlorobenzene 0 Concentration
2.6 El 0
(108-90-7) Mass
2.7 Chlorodibromomethane El0 Concentration
(124-48-1) Mass
Chloroethane 0 Concentration
2.8 El El
(75-00-3) Mass
EPA Form 3510-2C(Revised 3-19) Page 12

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Daily of Term of
Discharge Discharge Average
(required) (if available) Discharge Analyses Value Analyses
(if available)
2.9 2-chloroethylvinyl ether ❑ 0Concentration
(110-75-8) Mass
2.10 Chloroform(67-66-3) ElConcentration
Mass
Dichlorobromomethane Concentration
2.11 (75-27-4) Mass
1,1-dichloroethane El El Concentration
2.12 (75-34-3) Mass
2.13 1,2-dichloroethane El El0Concentration
(107-06-2) Mass
1,1-dichloroethylene El Concentration
2.14 El
(75-35-4) Mass
1,2-dichloropropane ❑ ❑ Concentration
2.15 (78-87-5) Mass
2.16 1,3-dichloropropylene El Concentration
(542-75-6) Mass
Ethylbenzene 0 Concentration mg/I <0.001 1 <0.001 1
2.17 0 0
(100-41-4) Mass lbs/day 0.00003 1
Methyl bromide ❑ Concentration
2.18 (74-83-9) Mass
2.19 Methyl chloride 0Concentration
(74-87-3) Mass
2.20 Methylene chloride 0Concentration
(75-09-2) Mass
221 1,1,2,2-tetrachloroethane ✓❑ Concentration
El El(79-34-5) Mass
EPA Form 3510-2C(Revised 3-19) Page 13

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Term
aily of of
Discharge
req fi (red) ifavalabe)e Di(if Davailable)harge Analyses AValuee Analyses
(
Tetrachloroethylene El � 0 Concentration
2.22 (127-18-4) Mass
2.23 Toluene 0 Concentration mg/I <0.001 1 <0.001 1
(108-88-3) Mass lbs/day <0.00003 1
2 24 1,2-trans-dichloroethylene 0 Concentration
1:1(156-60-5) Mass _
1,1,1-trichloroethane El � 0 Concentration
2.25 (71-55-6) Mass
1,1,2-trichloroethane � 0 Concentration
2.26 (79-00-5) Mass
2 27 Trichloroethylene � 0 Concentration
(79-01-6) Mass
Vinyl chloride
Concentration
2.28 El El
(75-01-4) Mass
Section 3.Organic Toxic Pollutants(GC/MS Fraction—Acid Compounds)
2-chlorophenol I Concentration
3.1 El El 1=1
(95-57-8) Mass
3.2 2,4-dichlorophenol 0 Concentration
El El(120-83-2) Mass
2,4-dimethylphenol 1:1 El � Concentration
3.3 (105-67-9) Mass
3.4 4,6-dinitro-o-cresol 0 0 Concentration
(534-52-1) Mass
2,4-dinitrophenol � � � Concentration
3.5 (51-28-5) Mass
EPA Form 3510-2C(Revised 3-19) Page 14

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
Pollutant/Parameter Testing Units Maximum Maximum Long-Term Long-
(and CAS Number,if available) Required Believed Believed (specify) Daily Monthly Average Number Term Number
Present Absent Daily of of
D(reghred) ifavailabarge e) Discharge Analyses AValuee Analyses
(if available)
2-nitrophenol 0 Concentration
3.6 (88-75-5) Mass
4-nitrophenol � Concentration
3.7 El El(100-02-7) Mass
p-chloro-m-cresol 0 Concentration
3.8 I=1 El
(59-50-7) Mass
3.9 Pentachlorophenol 0 Concentration
El 1:1
(87-86-5) Mass
3.10 Phenol /2 Concentration
0 El
(108-95-2) Mass
2,4,6-trichlorophenol 0 Concentration
3.11 0 El
(88 05 2) Mass
Section 4.Organic Toxic Pollutants(GC/MS Fraction—Base/Neutral Compounds)
4.1 Acenaphthene 0 Concentration
1=1 El(83-32-9) Mass
4.2 Acenaphthylene 1=1 El Concentration
(208-96-8) _Mass
Anthracene � Concentration
4.3 El El(120-12-7) Mass
Benzidine � Concentration
4.4 1:1 El(92-87-5) Mass
Benzo(a)anthracene 0 ElConcentration
4.5 (56-55-3) Mass
4.6 Benzo(a)pyrene 0 Concentration
El El(50-32-8) Mass
EPA Form 3510-2C(Revised 3-19) Page 15

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent
(optional)
PollutantlParameter Testing Units Long-Term
(and CAS Number.if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Term
Discharge Discharge Daily of Average of
(required) (if available) Dischar(ifavailable)ge Analyses Value Analyses
4.7 3,4-benzofluoranthene 0Concentration
(205-99-2) Mass
4.8 Benzo(ghi)perylene Concentration
(191-24-2) Mass
Benzo(k)fluoranthene ❑ ❑ Concentration
4.9 (207-08-9) Mass
Bis(2-chloroethoxy)methane 0 Concentration
4.10 (111-91-1) Mass
Bis(2-chloroethyl)ether ❑ ❑ Concentration
4.11 (111-44-4) Mass
4.12 Bis(2-chloroisopropyl)ether ❑ ✓1 Concentration
(102-80-1) Mass
4.13 Bis(2-ethylhexyl)phthalate ❑ ❑ 0 Concentration
(117-81-7) Mass
4-bromophenyl phenyl ether El ❑ Concentration
4.14 (101-55-3) Mass
Butyl benzyl phthalate Concentration
4.15 (85-68-7) Mass
2-chloronaphthalene ❑ ❑ ❑ Concentration
4.16 (91-58-7) Mass
4-chlorophenyl phenyl ether El Concentration
4.17 (7005-72-3) Mass
4.18 Chrysene ✓❑ Concentration
0 0
(218-01-9) Mass
4.19 Dibenzo(a,h)anthracene ✓❑ Concentration
El 0
(53-70-3) Mass
EPA Form 3510-2C(Revised 3-19) Page 16

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
I
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long Number
Present Absent Daily Monthly Term
Daily
Discharge Discharge Dischar a Analyses Average Analyses
(required) (if available) g Value
_ (if available)
4.20 1,2-dichlorobenzene Concentration
(95-50-1) Mass
4.21 1,3-dichlorobenzene ❑ ❑ 0Concentration
(541-73-1) Mass
4.22 1,4-dichlorobenzene 0Concentration
(106-46-7) Mass
4.23 3,3-dichlorobenzidine 0Concentration
0 El
(91-94-1) Mass
4.24 Diethyl phthalate 0Concentration
El El
(84-66-2) Mass
4.25 Dimethyl phthalate 0Concentration
El El
(131-11-3) Mass
4.26 Di-n-butyl phthalate ❑ © Concentration
(84-74-2) Mass
4.27 2,4-dinitrotoluene ❑ 0Concentration
(121-14-2) Mass
4 28 2,6-dinitrotoluene ❑ 0Concentration
(606-20-2) Mass
4.29 Di-n-octyl phthalate 0Concentration
El El
(117-84-0) Mass
4.30 1,2-Diphenylhydrazine 0 0Concentration
(as azobenzene)(122-66-7) Mass
4.31 Fluoranthene 0Concentration
0 El
(206-44-0) Mass
4.32 Fluorene 0Concentration
0 El
(86-73-7) Mass
EPA Form 3510-2C(Revised 3-19) Page 17

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v)p
Presence or Absence Intake
(check one) Effluent
(optional)
Pollutant/Parameter Testing Units Long-Term 1
Long-
(and CAS Number,if available) Required Believed Believed Maximum Maximum
q (specify) Daily Monthly Average Number Term Number
Present Absent Discharge Discharge Daily of Average of
(required) (if available) Dischar(ifavailablge)e Analyses Value Analyses
Hexachlorobenzene Concentration
4.33 (118-74-1) Mass
Hexachlorobutadiene ❑ Concentration
4.34 El El
(87 68 3) Mass
4.35 Hexachlorocyclopentadiene 0 0Concentration
(77-47-4) Mass
Hexachloroethane ❑ Concentration
4.36 (67 72 1) Mass
Indeno(1,2,3-cd)pyrene 0 Concentration
4.37 (193-39-5) Mass
4.38 Isophorone 0 0Concentration
(78-59-1) Mass
4.39 Naphthalene Concentration
(91-20-3) Mass
Nitrobenzene ❑ � Concentration
4.40 (98 95 3) Mass
4.41 N-nitrosodimethylamine ❑ 0 0Concentration
(62-75-9) Mass
N-nitrosodi-n-propylamine ❑ Concentration
4.42 0 El
(621-64-7)
Mass
N-nitrosodiphenylamine 0 Concentration
4.43 (86-30-6) Mass
Phenanthrene ❑ ❑ Concentration
4.44 (85-01-8) Mass
4.45 Pyrene Concentration
0 El El
(129-00-0) Mass
EPA Form 3510-2C(Revised 3-19) Page 18

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Daily of Term of
Drequired) ifavalabl) Discharge Analyses AValuee Analyses
(if available)
4.46 1,2,4-trichlorobenzene Concentration
(120-82-1) l Mass
Section 5.Organic Toxic Pollutants(GC/MS Fraction—Pesticides)
Aldrin ✓ Concentration
5.1 (309-00-2) Mass
a-BHC Concentration
5.2 (319-84-6) � El
Mass
R-BHC Concentration
5.3 I=1 El(319-85-7) 0
Mass
y-BHC Concentration
5.4 (58-89-9) 0 � ✓
Mass
5-BHC Concentration
5.5 0 CI El
(319-86-8) Mass
5.6 Chlordane Concentration
(57-74-9) Mass
5.7 4,4'-DDT Concentration
El I:I El
(50-29-3) Mass
5.8 4,4'-DDE Concentration
El El El
(72-55-9) Mass
4,4'-DDD Concentration
5.9 (72-54-8) � 0 Mass
5.10 Dieldrin 0 Concentration
0 0
(60-57-1) Mass
a-endosulfan 0 Concentration
5.11 0 CI
(115-29-7) Mass
EPA Form 3510-2C(Revised 3-19) Page 19

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent
I (optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long Number
Present Absent Daily Monthly Term
uaily of of
Discharge fired) Df ava labile) Dischaischarge rge Analyses
AValuee Analyses
(if available)
R-endosulfan Concentration
5.12 El El El
(115-29-7) Mass
Endosulfan sulfate ID ElConcentration
5.13 (1031-07-8) Mass
Endrin Concentration
5.14 (72 20 8) Mass
Endrin aldehyde ❑ Concentration
5.15 (7421-93-4) Mass
5.16 Heptachlor ❑ Concentration
(76-44-8) Mass
Heptachlor epoxide Concentration
5.17 (1024-57-3) 0 0 ✓❑ Mass
PCB-1242 Concentration
5.18 (53469-21-9) ❑ El ✓❑ Mass
PCB-1254 Concentration
5.19 (11097-69-1) 0 0 ✓❑ Mass
PCB-1221 Concentration
5.20 (11104-28-2) 0 ❑ ✓❑ Mass
PCB-1232 Concentration
5.21 (11141-16-5) 0 ❑ ✓E Mass
PCB-1248 Concentration
5.22 (12672-29-6) ❑ 0 0 Mass
PCB-1260 Concentration
5.23 (11096-82-5) ❑ ❑ 0 Mass
PCB-1016 Concentration
5.24 (12674-11-2) 1=1 ❑ ✓❑ Mass
EPA Form 3510-2C(Revised 3-19) Page 20

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))l
Presence or Absence Intake
(check one) Effluent
(optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Term
Discharge Discharge Datly of Average of
(required) (if available) Discharge Analyses Value Analyses
(if available)
Toxaphene Concentration
5.25 (8001-35-2) ❑ ❑ Mass
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C(Revised 3-19) Page 21

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE C.CERTAIN CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS(40 CFR 122.21(g)(7)(vi))1
Presence or Absence
(check one) Effluent Intake
(Optional)
Pollutant Units Maximum I Long-Term
Believed Believed (specify) Maximum Daily Long-Term
Present Absent Discharge Monthly Average Daily Number of Average Number of
Discharge Discharge Analyses Analyses
(required) Value
(if available) (if available)
❑ Check here if you believe all pollutants on Table C to be present in your discharge from the noted outfall.You need not complete the"Presence or Absence"column of Table C for
each pollutant.
❑ Check here if you believe all pollutants on Table C to be absent in your discharge from the noted outfall.You need not complete the"Presence or Absence"column of Table C for
each pollutant.
1 Bromide ❑ El Concentration
(24959-67-9) Mass
Chlorine,total Concentration
2' residual ❑ Mass
3. Color El ❑ Concentration
Mass
4. Fecal coliform El0 Concentration
Mass
5 Fluoride 0 ✓❑ Concentration
(16984-48-8) Mass
Concentration
6 Nitrate-nitrite 0 ✓❑ Mass
Nitrogen,total Concentration
7. El
organic(as N) ❑ Mass _
Concentration
8. Oil and grease 0 0 Mass
9 Phosphorus(as El 0
Concentration
P),total(7723-14-0) Mass
10. Sulfate(as SO4) 0 ❑ Concentration
(14808-79-8) Mass
Concentration
11. Sulfide(as S) 0 0
Mass
EPA Form 3510-2C(Revised 3-19) Page 23

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE C.CERTAIN CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS(40 CFR 122.21(g)(7)(vi))1
Presence or Absence Intake
(check one) Effluent (Optional)
Units
Pollutant Maximum Long-Term
Believed , Believed (specify) Maximum Daily Long-Term
Present Absent Discharge Monthly Average Daily Number of Average Number of
(required) Discharge Discharge Analyses Value Analyses
(if available) (if available)
12. Sulfite(as S03) 0 ❑✓ Concentration
(14265-45-3) Mass
13. Surfactants 0 El
Concentration
Mass
14. Aluminum,total 0 El Concentration
(7429-90-5) Mass
15. Barium,total ❑ ❑✓ Concentration
(7440-39-3) Mass
Boron,total Concentration
16. (7440-42-8) 0 ❑✓
Mass
17. Cobalt,totalEl ❑✓ Concentration
(7440-48-4) Mass
18. Iron,total 0 El
Concentration mg/I 0.489 1 0.489 1
(7439-89-6) Mass lbs/day 0.04 1
19 Magnesium,total ❑ ❑� Concentration
(7439-95-0) Mass
Molybdenum, Concentration
20. total ❑ ✓❑ Mass
(7439-98-7)
21. Manganese,total Concentration
(7439-96-5) Mass
22 Tin,total 0 ✓l Concentration
(7440-31-5) Mass
23 Titanium,totalEl ✓❑ Concentration
(7440-32-6) Mass
EPA Form 3510-2C(Revised 3-19) Page 24

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE C.CERTAIN CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS(40 CFR 122.21(g)(7)(vi))1
Presence or Absence Intake
(check one) Effluent (Optional)
Units —
Pollutant Maximum Long-Term
Believed Believed (specify) Maximum Daily Monthly Average Daily Number of Long-Term Number of
Present Absent Discharge Discharge Discharge Analyses Average Analyses
(required) (if available) (if available) Value
24, Radioactivity
Concentration
Alpha,total ❑ ❑
Mass
Beta,total ❑ El
Concentration
Mass
•
Radium,total 0 ElConcentration
Mass
Radium 226,total El 0✓ Concentration
Mass
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C(Revised 3-19) Page 25
I

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE D.CERTAIN HAZARDOUS SUBSTANCES AND ASBESTOS(40 CFR 12221(g)(7)(vii)),
Presence or Absence
Pollutant (check one) Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent _
1. Asbestos ❑ ✓❑
2. Acetaldehyde ❑ ✓❑
3. Allyl alcohol ❑ ✓❑
4. Allyl chloride ❑ ✓❑
5. Amyl acetate ❑ ✓❑
6. Aniline ❑ ✓❑
7. Benzonitrile ❑ ✓❑
8. Benzyl chloride ❑ p
9. Butyl acetate ❑ ✓❑
10. Butylamine ❑ ✓❑
11. Captan CI
12. Carbaryl ❑ ✓❑
13. Carbofuran ❑ ✓❑
14. Carbon disulfide ❑ ✓❑
15. Chlorpyrifos ❑ ✓❑
16. Coumaphos 0 ✓❑
17. Cresol ❑ El
18. Crotonaldehyde ❑ ✓❑
19. Cyclohexane ❑ ✓❑
EPA Form 3510-2C(Revised 3-19) Page 27

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE D.CERTAIN HAZARDOUS SUBSTANCES AND ASBESTOS(40 CFR 122.21(g)(7)(vii))1
Presence or Absence
Pollutant (check one) Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
20. 2,4-D(2,4-dichlorophenoxyacetic acid) 0 0
' 21. Diazinon ❑ 0
22. Dicamba 0 0
23. Dichlobenil ❑ 0
24. Dichlone 0 0
25. 2,2-dichloropropionic acid 0 0
26. Dichlorvos ❑ 0
27. Diethyl amine 0 0
28. Dimethyl amine 0 0
29. Dintrobenzene 0 0
30. Diquat 0 0
31. Disulfoton 0 0
32. Diuron 0 0
33. Epichlorohydrin ❑ 0
34. Ethion 0 0
35. Ethylene diamine 0 0
36. Ethylene dibromide 0 0
37. Formaldehyde 0 0
38. Furfural 0 0
EPA Form 3510-2C(Revised 3-19) Page 28

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine ow. OMB No.2040-0004
TABLE D.CERTAIN HAZARDOUS SUBSTANCES AND ASBESTOS(40 CFR 122.21(g)(7)(vii))1
Presence or Absence
Pollutant (check one) Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
39. Guthion ❑ ✓❑
40. Isoprene 0 ❑✓
41. Isopropanolamine 0 ✓❑
42. Kelthane 0 ✓❑
43. Kepone ❑ ✓❑
44. Malathion 0 ✓❑
45. Mercaptodimethur 0 ✓❑
46. Methoxychlor 0 p
47. Methyl mercaptan 0 ✓❑
48. Methyl methacrylate 0 ✓❑
49. Methyl parathion 0 ✓❑
50. Mevinphos 0 ✓❑
51. Mexacarbate 0 ✓❑
52. Monoethyl amine 0 p
53. Monomethyl amine 0 ✓❑
54. Naled 0 ✓❑
55. Naphthenic acid 0 0
56. Nitrotoluene ❑ ❑
57. Parathion 0 p
EPA Form 3510-2C(Revised 3-19) Page 29

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE D.CERTAIN HAZARDOUS SUBSTANCES AND ASBESTOS(40 CFR 122.21(g)(7)(vii))1
Presence or Absence
Pollutant (check one) Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
58. Phenolsulfonate ❑ ✓❑
59. Phosgene ❑ ✓❑
60. Propargite ❑ p
61. Propylene oxide ❑ ❑
62. Pyrethrins ❑ ✓❑
63. Quinoline ❑ ✓❑
64. Resorcinol ❑ ✓❑
65. Strontium 0 ✓❑
66. Strychnine 0 ✓❑
67. Styrene 0 p
68. 2,4,5-T(2,4,5-trichlorophenoxyacetic ❑ ✓❑
acid)
69. TDE(tetrachlorodiphenyl ethane) 0 ✓❑
70. 2,4,5-TP[2-(2,4,5-trichlorophenoxy) ❑ ❑
propanoic acid]
71. Trichlorofon 0 0
72. Triethanolamine ❑ 0
73. Triethylamine ❑ 0
74. Trimethylamine ❑ ✓❑
75. Uranium ❑ ✓❑
76. Vanadium 0 ✓❑
EPA Form 3510-2C(Revised 3-19) Page 30

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE D.CERTAIN HAZARDOUS SUBSTANCES AND ASBESTOS(40 CFR 122.21(g)(7)(vii))1
Presence or Absence
Pollutant (check one) Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
77. Vinyl acetate ❑ ✓❑
78. Xylene ✓❑ ❑ Analytical Testing 4.4 mg/I
79. Xylenol ❑ ✓❑
80. Zirconium ❑ ✓❑
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e.,methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0.See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C(Revised 3-19) Page 31

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCR000012930 NC0086665 Rockingham Combustion Turbine 001 OMB No.2040-0004
TABLE E.2,3,7,8 TETRACHLORODIBENZO P DIOXIN(2,3,7,8 TCDD)(40 CFR 122.21(g)(7)(viii))
TCDD Presence or
Congeners Absence
Pollutant Used or (check one) Results of Screening Procedure
Manufactured Believed Believed
Present Absent
2,3,7,8-TCDD ❑ ✓❑
EPA Form 3510-2C(Revised 3-19) Page 33

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I) USGS 7 5 Minute Series Topograptuo Quadrangles Bethany(NC) DISCHARGE LOCATION MAP FIGURE
!Source Bp Mg(Icemen*comfoulgoingfrasteechgrl
NPDES Permit No: NC0086665
2) Property'ne information from Rodungharn Coyly Online GIS and is appro.mate
• Inecatea approximate location of home assumed to be suppled by private driNung*Oar well
[Source Rockingham CoLnty GIS Aortal 120071 DUKE ENERGY
1
ROCKINGHAM CT STATION
Drawn By Chad Hearn SCALE ROCKINGHAM COUNTY,NORTH CAROLINA
Projed Manager Bill Miner
a 0 125 025 0 5
Client Duke Energy MOPS
Date.05123/2011

Rockingham Combustion Turbine Water Schematic Diagram
NPDES Permit NC0086665 - Rockingham County
NOx Injection
Water
300(only when burning 50(when burning gas) Evaporation
liquid fuels)
Demineralizer
On-Line CT
Community 225 1 Process Storage Tank 300 Rental 300 Water Storage
I Compressor
Makeup Water 0.75 MG Capacity Demineralizer Tank Intermittent Wash
1.7 MG capacity
U
n
1
n
a
m
Potable -1 Off-LineCT e
Water i _ Compressor d
System ! Intermittent
Wash
T
1,000 galfyr r
1 Evaporation i
1 b
On-Site 105 u
t
Septic i a
System t
I r
Inlet Air Evaporative y
125 Cooling SystemI Wastewater
T
Sump o
•
Se i Intermittent a
Water Blowdown 1,000gal/yr a
1
System Units 1-4 c
0
Air Intermittent b
1 Conditioner 20 Blowdown
Area Condensate Unit 5 j Off-Site Disposal s
Washdown
5 C
r
1 e
Contact Stormwater e
(from containments OiltWater 1 k
around oil storage i Separator i OUTFACE
!I
sources) 25 Il 001
Intermittent Intermittent
25 i Non-contact
Stormwater
i
Oily Water
Note: The majority of these flows should be considered intermittent Flow Unit—Galilons Per Minute(gpm)

NPDES Supplemental Information
For
Rockingham Combustion Turbine (CT)
NPDES Permit # NC0086665
September 2021

General Information
The Rockingham Combustion Turbine Station dispatches backup and peaking power in support
of the regular Duke Energy system. The station consists of five (5) simple-cycle gas turbine
generators designed to produce approximately 180 megawatts each for a total generating
capacity of approximately 900 megawatts. The primary fuel consumed is natural gas with #2
diesel-fuel as a secondary fuel.
Process water for plant operations is provided by Dan River Water Inc.
The wastewater system is primarily for the treatment of storm water, system blow downs, wash
downs, air-conditioning condensate and other discharges associated with the operation of the
gas turbines. The discharge is primarily influenced by precipitation and plant operations, which
can vary greatly seasonally. Design, average, and maximum instantaneous discharge flow rates
to outfall 001 range between 100 and 500 gpm. The discharge duration varies from 30 to 60
minutes.
NOx Control/CT Compressor Wash
Process water is treated by portable demineralizer trailers and stored in a 1.7M gallon storage
tank prior to injection into the operating units for NOx control and Compressor Wash. The demin
water is used for NOx control and is lost to evaporation. Water generated during Compressor
Wash is sent for off-site disposal.
Oil/Water Separator
The treatment system is designed to remove oil/fuel from low volume wastewater and
stormwater. The treatment system consists of an oil water separator (OWS) with a coalescing
filter that functions as a polishing filter. The OWS and coalescing filter have a capacity of 11,600
gallons. Wastewater is collected in the OWS sump, passes through OWS, and then is pumped
gp P
through the polishing filter before discharge to outfall 001.

Table 1 - 2C Pollutant Analytical Data Summary
Concentration, Mass,
Pollutant Date Sampled Flow, MGD m I lbs/day °C S.U.
BOD 9/8/2021 0.011 2.4 0.22
COD 9/8/2021 0.011 57.3 5.25
TOC 9/8/2021 0.011 10.1 0.926
Ammonia 9/8/2021 0.011 <0.1 <0.001
Iron 9/8/2021 0.011 0.489 0.04
Zinc 9/8/2021 0.011 0.0391 0.0004
Benzene 7/8/2021 0.004 <0.001 <0.00003
Tolune 7/8/2021 0.004 <0.001 <0.00003
Ethylbenzene 7/8/2021 0.004 <0.001 <0.00003
Xylene 7/8/2021 0.004 0.0044 0.0001
TSS 7/8/2021 0.004 2.6 0.09
Temperature,
Summer 7/8/2021 24.7
pH 6.68

Pace Analytical Services,LLC
ical ��Q�ti�cer�re Suite 100
aceAnalyt
9Huntersville,NC 28078
www.pacslabs.com [phone]
July 15, 2021
Program Manager
Duke Energy
13339 Hagers Ferry Road
Bldg. 7405 MG30A2
Huntersville, NC 28078
RE: Project: J21070090
Pace Project No.: 92548332
Dear Program Manager:
Enclosed are the analytical results for sample(s)received by the laboratory on July 08, 2021. The results relate only to the
samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual,where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services-Charlotte
• Pace Analytical Services-Eden
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Kevin Herring
[e-mail]
1(704)875-9092
HORIZON Database Administrator
Enclosures
• REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
//4-ft.:4,440without the written consent of Pace Analytical Services,LLC. Page 1 of 17

Pace Analytical Services,LLC
e
„?..1aceAnalytical Vaiagiscarhe. Suite 100
yHuntersville,NC 28078
www.pacslabs.com [phone]
CERTIFICATIONS
Project: J21070090
Pace Project No.: 92548332
Pace Analytical Services Charlotte
9800 Kincey Ave.Ste 100,Huntersville,NC 28078 South Carolina Certification#:99006001
Louisiana/NELAP Certification#LA170028 Florida/NELAP Certification#:E87627
North Carolina Drinking Water Certification#:37706 Kentucky UST Certification#:84
North Carolina Field Services Certification#:5342 VirginiaNELAP Certification#:460221
North Carolina Wastewater Certification#: 12
Pace Analytical Services Eden
205 East Meadow Road Suite A,Eden,NC 27288 North Carolina Wastewater Certification#:633
North Carolina Drinking Water Certification#:37738 VirginiaNELAP Certification#:460025
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 2 of 17

Pace Analytical Services,LLC
® Huni c e. Suite 100
aceAnalytical ��b �erg
tersville,NC 28078
www.pac.lsbs.com [phone]
SAMPLE SUMMARY
Project: J21070090
Pace Project No.: 92548332
Lab ID Sample ID Matrix Date Collected Date Received
92548332001 2021018289 Water 07/08/21 10:40 07/08/21 12:43
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 3 of 17

Pace Analytical Services,LLC
aceAnalytical �abgigcaft/e. Suite 100
Huntersville,NC 28078
www.pacslabs.com [phone]
SAMPLE ANALYTE COUNT
Project: J21070090
Pace Project No.: 92548332
Analytes
Lab ID Sample ID Method Analysts Reported Laboratory
92548332001 2021018289 SM 2130B-2011 AMI 1 PASI-E
SM 2540D-2011 LRB 1 PASI-E
SM 6200B SAS 8 PASI-C
PASI-C=Pace Analytical Services-Charlotte
PASI-E=Pace Analytical Services-Eden
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 4 of 17

Pace Analytical Services,LLC
ValViecahe. Suite 100
21
aceAnalytical® Huntersville,NC 28078
www.pacalabs.com [phone]
SUMMARY OF DETECTION
Project: J21070090
Pace Project No.: 92548332
Lab Sample ID Client Sample ID
Method Parameters Result Units Report Limit Analyzed Qualifiers
92548332001 2021018289
SM 2130B-2011 Turbidity 3.0 NTU 1.0 07/08/21 22:18
SM 2540D-2011 Total Suspended Solids 2.6 mg/L 2.5 07/12/21 14:34
Performed by Pace 07/08/21 14:18
Collected By G.Vernon 07/08/21 14:18
Collected Date 7/8/21 07/08/21 14:18
Collected Time 10.40 07/08/21 14:18
Temperature 24.7 deg C 07/08/21 14:18
SM 6200E m&p-Xylene 2.4 ug/L 2.0 07/10/21 05:31
SM 6200B o-Xylene 2.0 ug/L 1.0 07/10/21 05:31
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 5 of 17

Pace Analytical Services,LLC
9igabgi . Suite 100
aceAnalytical �c5� reHuntersville,NC 28078
www.pacdabs.com [phone]
PROJECT NARRATIVE
Project: J21070090
Pace Project No.: 92548332
Method: SM 2130B-2011
Description: 2130E Turbidity EDN
Client: Duke Energy
Date: July 15,2021
General Information:
1 sample was analyzed for SM 2130B-2011 by Pace Analytical Services Eden. All samples were received in acceptable condition with
any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form(SCUR)attached at the end of
this report.
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank,where applicable,with any exceptions noted below.
Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences(RPDs)were within acceptance criteria with any exceptions noted below.
Duplicate Sample:
All duplicate sample results were within method acceptance criteria with any exceptions noted below.
Additional Comments:
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 6 of 17

Pace Analytical Services,LLC
® vabui cg e. Suite 100
'aceAnalyficalHuntersville,
er
Hun NC 28078
www.pacelahs.com [phone]
PROJECT NARRATIVE
Project: J21070090
Pace Project No.: 92548332
Method: SM 2540D-2011
Description: 2540D Total Suspended Solids
Client: Duke Energy
Date: July 15,2021
General Information:
1 sample was analyzed for SM 2540D-2011 by Pace Analytical Services Eden. All samples were received in acceptable condition with
any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form(SCUR)attached at the end of
this report.
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank,where applicable,with any exceptions noted below.
Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences(RPDs)were within acceptance criteria with any exceptions noted below.
Duplicate Sample:
All duplicate sample results were within method acceptance criteria with any exceptions noted below.
Additional Comments:
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 7 of 17

Pace Analytical Services,LLC
aceAnalytical Vgigigcsy/hie. Suite 100
Huntersville,NC 28078
www.pacslabs.com [phone]
PROJECT NARRATIVE
Project: J21070090
Pace Project No.: 92548332
Method: SM 6200B
Description: 602 Volatiles by Method 6200
Client: Duke Energy
Date: July 15,2021
General Information:
1 sample was analyzed for SM 6200B by Pace Analytical Services Charlotte. All samples were received in acceptable condition with
any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form(SCUR)attached at the end of
this report.
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Initial Calibrations(including MS Tune as applicable):
All criteria were within method requirements with any exceptions noted below.
Continuing Calibration:
All criteria were within method requirements with any exceptions noted below.
Internal Standards:
All internal standards were within QC limits with any exceptions noted below.
Surrogates:
All surrogates were within QC limits with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank,where applicable,with any exceptions noted below.
Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences(RPDs)were within acceptance criteria with any exceptions noted below.
Additional Comments:
This data package has been reviewed for quality and completeness and is approved for release.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 8 of 17

Pace Analytical Services,LLC
' • aceAnalytical F9gBgliiocsq ie. Suite 100
Huntersville,NC 28078
www.pacalabs.com [phone]
ANALYTICAL RESULTS
Project: J21070090
Pace Project No.: 92548332
Sample: 2021018289 Lab ID: 92548332001 Collected: 07/08/21 10:40 Received: 07/08/21 12:43 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
2130B Turbidity EDN Analytical Method:SM 2130B-2011
Pace Analytical Services-Eden
Turbidity 3.0 NTU 1.0 0.20 1 07/08/21 22:18
2540D Total Suspended Solids Analytical Method:SM 2540D-2011
Pace Analytical Services-Eden
Total Suspended Solids 2.6 mg/L 2.5 2.5 1 07/12/21 14:34
Field Data Analytical Method:
Pace Analytical Services-Charlotte
Performed by Pace 1 07/08/21 14:18
Collected By G.Vernon 1 07/08/21 14:18
Collected Date 7/8/21 1 07/08/21 14:18
Collected Time 10.40 1 07/08/21 14:18
Temperature 24.7 deg C 1 07/08/21 14:18
602 Volatiles by Method 6200 Analytical Method:SM 6200B
Pace Analytical Services-Charlotte
Benzene ND ug/L 1.0 0.34 1 07/10/21 05:31 71-43-2
Ethylbenzene ND ug/L 1.0 0.30 1 07/10/21 05:31 100-41-4
Toluene ND ug/L 1.0 0.48 1 07/10/21 05:31 108-88-3
m&p-Xylene 2.4 ug/L 2.0 0.71 1 07/10/21 05:31 179601-23-1
o-Xylene 2.0 ug/L 1.0 0.34 1 07/10/21 05:31 95-47-6
Surrogates
4-Bromofluorobenzene(S) 96 % 70-130 1 07/10/21 05:31 460-00-4
1,2-Dichloroethane-d4(S) 104 % 70-130 1 07/10/21 05:31 17060-07-0
Toluene-d8(S) 101 % 70-130 1 07/10/21 05:31 2037-26-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:07/15/2021 05:03 PM without the written consent of Pace Analytical Services,LLC. Page 9 of 17

Pace Analytical Services,LLC
aceAnalytical i age liicor e. Suite 100
Huntersville,NC 28078
www.pacelabs.com [phone]
QUALITY CONTROL DATA
Project: J21070090
Pace Project No.: 92548332
QC Batch: 632284 Analysis Method: SM 2130B-2011
QC Batch Method: SM 2130B-2011 Analysis Description: 2130E Turbidity EDN
Laboratory: Pace Analytical Services-Eden
Associated Lab Samples: 92548332001
METHOD BLANK: 3321541 Matrix: Water
Associated Lab Samples: 92548332001
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Turbidity NTU ND 1.0 0.20 07/08/21 22:14
LABORATORY CONTROL SAMPLE: 3321542
Spike LCS LCS %Rec
Parameter Units Conc. Result %Rec Limits Qualifiers
Turbidity NTU 20 20.5 102 90-110
SAMPLE DUPLICATE: 3321543
92548240001 Dup Max
Parameter Units Result Result RPD RPD Qualifiers
Turbidity NTU 1.1 1.0 2 10
Results presented on this page are in the units indicated by the"Units"column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:07/15/2021 05:03 PM without the written consent of Pace Analytical Services,LLC. Page 10 of 17

r
Pace Analytical Services,LLC
f raceAnalytical ow hinter .e. Suite 100
Huntersville,NC 28078
www.pacelabs.com [phone]
QUALITY CONTROL DATA
Project: J21070090
Pace Project No.: 92548332
QC Batch: 632689 Analysis Method: SM 2540D-2011
QC Batch Method: SM 2540D-2011 Analysis Description: 2540D Total Suspended Solids
Laboratory: Pace Analytical Services-Eden
Associated Lab Samples: 92548332001
METHOD BLANK: 3323416 Matrix: Water
Associated Lab Samples: 92548332001
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Total Suspended Solids mg/L ND 2.5 2.5 07/12/21 14:32
LABORATORY CONTROL SAMPLE: 3323417
Spike LCS LCS %Rec
Parameter Units Conc. Result %Rec Limits Qualifiers
Total Suspended Solids mg/L 250 226 90 90-110
SAMPLE DUPLICATE: 3323418
92548261001 Dup Max
Parameter Units Result Result RPD RPD Qualifiers
Total Suspended Solids mg/L 194 196 1 25
SAMPLE DUPLICATE: 3323419
92548261002 Dup Max
Parameter Units Result Result RPD RPD Qualifiers
Total Suspended Solids mg/L 221 258 16 25
Results presented on this page are in the units indicated by the"Units"column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:07/15/2021 05:03 PM without the written consent of Pace Analytical Services,LLC. Page 11 of 17
I

Pace Analytical Services,LLC
aceAnalytical® F9g6gIiigcsfIle. Suite 100
y Huntersville,NC 28078
www.pacslahs.eom
[phone]
QUALITY CONTROL DATA
Project: J21070090
Pace Project No.: 92548332
QC Batch: 632506 Analysis Method: SM 6200B
QC Batch Method: SM 6200B Analysis Description: 602 by 6200B
Laboratory: Pace Analytical Services-Charlotte
Associated Lab Samples: 92548332001
METHOD BLANK: 3322567 Matrix: Water
Associated Lab Samples: 92548332001
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Benzene ug/L ND 1.0 0.34 07/09/21 22:00
Ethylbenzene ug/L ND 1.0 0.30 07/09/21 22:00
m&p-Xylene ug/L ND 2.0 0.71 07/09/21 22:00
o-Xylene ug/L ND 1.0 0.34 07/09/21 22:00
Toluene ug/L ND 1.0 0.48 07/09/21 22:00
1,2-Dichloroethane-d4(S) % 102 70-130 07/09/21 22:00
4-Bromofluorobenzene(S) % 96 70-130 07/09/21 22:00
Toluene-d8(S) % 101 70-130 07/09/21 22:00
LABORATORY CONTROL SAMPLE: 3322568
Spike LCS LCS %Rec
Parameter Units Conc. Result %Rec Limits Qualifiers
Benzene ug/L 50 46.0 92 60-140
Ethylbenzene ug/L 50 47.0 94 60-140
m&p-Xylene ug/L 100 95.8 96 60-140
o-Xylene ug/L 50 49.1 98 60-140
Toluene ug/L 50 45.4 91 60-140
1,2-Dichloroethane-d4(S) % 108 70-130
4-Bromofluorobenzene(S) % 100 70-130
Toluene-d8(S) % 99 70-130
MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3322569 3322570
MS MSD
92548332001 Spike Spike MS MSD MS MSD %Rec Max
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual
Benzene ug/L ND 20 20 21.1 20.6 105 103 60-140 2 30
Ethylbenzene ug/L ND 20 20 22.4 21.9 108 106 60-140 2 30
m&p-Xylene ug/L 2.4 40 40 45.2 44.1 107 104 60-140 3 30
o-Xylene ug/L 2.0 20 20 23.5 23.0 108 105 60-140 2 30
Toluene ug/L ND 20 20 21.5 21.2 103 102 60-140 1 30
1,2-Dichloroethane-d4(S) % 109 109 70-130
4-Bromofluorobenzene(S) % 100 99 70-130
Toluene-d8(S) % 99 101 70-130
Results presented on this page are in the units indicated by the"Units"column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:07/15/2021 05:03 PM without the written consent of Pace Analytical Services,LLC. Page 12 of 17

Pace Analytical Services,LLC
�����$
®
eAnalytcal erg e. Suite 100
Arraci Huntersville,NC 28078
www.pacalabs.com [phone]
QUALIFIERS
Project: J21070090
Pace Project No.: 92548332
DEFINITIONS
DF-Dilution Factor,if reported,represents the factor applied to the reported data due to dilution of the sample aliquot.
ND-Not Detected at or above adjusted reporting limit.
TNTC-Too Numerous To Count
J-Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL-Adjusted Method Detection Limit.
PQL-Practical Quantitation Limit.
RL-Reporting Limit-The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S-Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270.The result for each analyte is
a combined concentration.
Consistent with EPA guidelines,unrounded data are displayed and have been used to calculate%recovery and RPD values.
LCS(D)-Laboratory Control Sample(Duplicate)
MS(D)-Matrix Spike(Duplicate)
DUP-Sample Duplicate
RPD-Relative Percent Difference
NC-Not Calculable.
SG-Silica Gel-Clean-Up
U-Indicates the compound was analyzed for,but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited.Contact your Pace PM for the current list of accredited analytes.
TNI-The NELAC Institute.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:07/15/2021 05:03 PM without the written consent of Pace Analytical Services,LLC. Page 13 of 17

Pace Analytical Services,LLC
'aceAnalytical oaggiioocorr e. Suite 100
y Huntersville,NC 28078
www.pacolabs.cam [phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: J21070090
Pace Project No.: 92548332
Analytical
Lab ID Sample ID QC Batch Method QC Batch Analytical Method Batch
92548332001 2021018289 SM 2130B-2011 632284
92548332001 2021018289 SM 2540D-2011 632689
92548332001 2021018289
92548332001 2021018289 SM 6200B 632506
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:07/15/2021 05:03 PM without the written consent of Pace Analytical Services,LLC. Page 14 of 17

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CHAIN OF CUSTODY RECORD AND ANALYSIS REQUEST FORM
i Duke Energy Analytical Laboratory j i Analytical Laboratory Use Only
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5 l .`.Y'� ' ENERGY, [phone] ! ! Gn>taa]watcr ! COPY to CLIENT
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Duke Energy Analytical Laboratory i i Analytical Laboratory Use Only
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Page 22 of 23
® 9800 Kincey Ave.,Suite 100
/11aceAnalytical Huntersville,NC 28078
1 www.pacelabs.com [phone]
SAMPLE ACKNOWLEDGMENT
Samples Submitted By: Duke Energy Pace Project Manager: Kevin Herring
Client Project ID: J21070090 Phone [phone]
Client PO#: 9172712 [e-mail]
Pace Analytical Project ID: 92548332
Samples Received: July 8,2021 12:43 PM
Estimated Completion: July 15,2021
CC: Program Manager
Pace Analytical Date/Tiime
Customer Sample ID Lab ID Matrix Collected Method
2021018289 92548332001 Water 07/08/21 10:40 2130B Turbidity EDN
2540D Total Suspended Solids EDN
602 by 6200B MSV
Field Data
Sample Disposal
Please contact your project manager if you recognize any discrepancy in this form or have any questions about your project.
Confidentiality Statement:The Parties agree that they will take all reasonable precautions to prevent the unauthorized disclosure of any proprietary or
confidential information of each other and that they will not disclose such information except to those employees,subcontractors,or agents who have
expressly agreed to maintain confidentiality.
Thank you for choosing Pace Analytical Services, LLC.
07/08/2021 02:26 PM Page 1 of 2

Page 23 of 23
® 9800 Kincey Ave.,Suite 100
aceAnalytical Huntersville,NC 28078
( www.pacelabs.com [phone]
SAMPLE ACKNOWLEDGMENT
Analyte List
Reporting
Customer Sample ID Method Compound Limit Units
2021018289 2130B Turbidity EDN Turbidity 1 NTU
2540D Total Suspended Solids Total Suspended Solids 2.5 mg/L
602 Volatiles by Method 6200 Benzene 1 ug/L
Toluene 1 ug/L
Ethylbenzene 1 ug/L
m&p-Xylene 2 ug/L
o-Xylene 1 ug/L
Field Data Performed by
Collected By
Collected Date
Collected Time
pH Std.Units
Temperature deg C
Appearance
Specific Conductance umhos/cm
Oxidation Potential mV
Oxygen,Dissolved mg/L
Low Level Residual Chlorine ug/L
REDOX mV
Turbidity NW
Chlorine,Total Residual mg/L
Chlorine,Free mg/L
Chain-of-custody number
Permit number
Rainfall Inches
Event Duration Hours
Color
Odor
Clarity
Floating Solids
Suspended Solids
Foam
Oil Sheen
Oth Obv Indicator SW Pollution
Please contact your project manager if you recognize any discrepancy in this form or have any questions about your project.
Thank you for choosing Pace Analytical Services, LLC.
07/08/2021 02.26 PM Page 2 of 2

aceAnalytical® Pace Analytical Services,LLC
9800 Kincey Ave. Suite 100
Huntersville,NC 28078
www.pacelabs.com [phone]
September 20, 2021
Program Manager
Duke Energy
13339 Hagers Ferry Road
Bldg. 7405 MG30A2
Huntersville, NC 28078
RE: Project: J21090228 Rockingham
Pace Project No.: 92560936
Dear Program Manager:
Enclosed are the analytical results for sample(s)received by the laboratory on September 13, 2021. The results relate only
to the samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual,where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services-Asheville
• Pace Analytical Services-Eden
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
ry.KTA-i D'0-i°¢-
Nicole D'Oleo
nicole.d'[e-mail]
[phone]
Project Manager
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
"'$ ' without the written consent of Pace Analytical Services,LLC. Page 1 of 22

Pace Analytical Services,LLC
® 9800 Kincey Ave. Suite 100
-eaceAnalytical Huntersville,NC 28078
www.pacalabs.com [phone]
CERTIFICATIONS
Project: J21090228 Rockingham
Pace Project No.: 92560936
Pace Analytical Services Asheville
2225 Riverside Drive,Asheville,NC 28804 North Carolina Wastewater Certification#:40
Florida/NELAP Certification#:E87648 South Carolina Certification#:99030001
North Carolina Drinking Water Certification#:37712 VirginiaNELAP Certification#:460222
Pace Analytical Services Eden
205 East Meadow Road Suite A,Eden,NC 27288 North Carolina Wastewater Certification#:633
North Carolina Drinking Water Certification#:37738 VirginiaNELAP Certification#:460025
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 2 of 22

Pace Analytical Services,LLC
AceAnalytical 9800 Kincey Ave. Suite 100
Huntersville,NC 28078
www.pacelabs.com [phone]
SAMPLE SUMMARY
Project: J21090228 Rockingham
Pace Project No.: 92560936
Lab ID Sample ID Matrix Date Collected Date Received
92560936001 OUTFALL 001 Water 09/13/21 11:10 09/13/21 12:55
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 3 of 22

Pace Analytical Services,LLC
2eAnalytical®® 9800 Kincey Ave. Suite100
Huntersville,NC 28078078
www.pacelabs.cam [phone]
SAMPLE ANALYTE COUNT
Project: J21090228 Rockingham
Pace Project No.: 92560936
Analytes
Lab ID Sample ID Method Analysts Reported Laboratory
92560936001 OUTFALL 001 SM 5210B-2011 SRS 1 PASI-E
EPA 200.7 Rev 4.4 1994 CBV 2 PASI-A
EPA 350.1 Rev 2.0 1993 NGP 1 PASI-A
SM 5220D-2011 JP1 1 PASI-A
SM 5310B-2011 MEM1 1 PASI-A
PASI-A=Pace Analytical Services-Asheville
PASI-E=Pace Analytical Services-Eden
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 4 of 22

Pace Analytical Services,LLC
aceAnalytical 9800 Kincey Ave. Suite 100
I Huntersville,NC 28078
www.pacelabs.com
[phone]
SUMMARY OF DETECTION
Project: J21090228 Rockingham
Pace Project No.: 92560936
Lab Sample ID Client Sample ID
Method Parameters Result Units Report Limit Analyzed Qualifiers
92560936001 OUTFALL 001
SM 5210B-2011 BOD,5 day 2.4 mg/L 2.0 09/19/21 11:49 R6
EPA 200.7 Rev 4.4 1994 Iron 489 ug/L 50.0 09/16/21 19:01
EPA 200.7 Rev 4.4 1994 Zinc 39.1 ug/L 10.0 09/16/21 19:01
SM 5220D-2011 Chemical Oxygen Demand 57.3 mg/L 25.0 09/17/21 05:14
SM 5310B-2011 Total Organic Carbon 10.1 mg/L 1.0 09/16/21 17:42
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 5 of 22

Pace Analytical Services,LLC
'aceAnalytical 9800 Kincey Ave. Suite 100
Huntersville,NC 28078
www.pacelabs.tom [phone]
PROJECT NARRATIVE
Project: J21090228 Rockingham
Pace Project No.: 92560936
Method: SM 5210B-2011
Description: 5210B BOD,5 day EDN
Client: Duke Energy
Date: September 20,2021
General Information:
1 sample was analyzed for SM 5210B-2011 by Pace Analytical Services Eden. All samples were received in acceptable condition with
any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form(SCUR)attached at the end of
this report.
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Sample Preparation:
The samples were prepared in accordance with SM 5210B-2011 with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank,where applicable,with any exceptions noted below.
Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences(RPDs)were within acceptance criteria with any exceptions noted below.
Duplicate Sample:
All duplicate sample results were within method acceptance criteria with any exceptions noted below.
Additional Comments:
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 6 of 22

Pace Analytical Services,LLC
® 9800 Kincey Ave. Suite 100
aceAnalytical Huntersville,NC 28078
www.pacelabs.com [phone]
PROJECT NARRATIVE
Project: J21090228 Rockingham
Pace Project No.: 92560936
Method: EPA 200.7 Rev 4.41994
Description: 200.7 MET ICP
Client: Duke Energy
Date: September 20,2021
General Information:
1 sample was analyzed for EPA 200.7 Rev 4.4 1994 by Pace Analytical Services Asheville. All samples were received in acceptable
condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form(SCUR)attached
at the end of this report.
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Sample Preparation:
The samples were prepared in accordance with EPA 200.7 Rev 4.4 1994 with any exceptions noted below.
Initial Calibrations(including MS Tune as applicable):
All criteria were within method requirements with any exceptions noted below.
Continuing Calibration:
All criteria were within method requirements with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank,where applicable,with any exceptions noted below.
Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences(RPDs)were within acceptance criteria with any exceptions noted below.
Additional Comments:
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 7 of 22

Pace Analytical Services,LLC
"1-aceAnalytical5 9800 Kincey Ave. Suite 100
Huntersville,NC 28078
www.pacelabs.com [phone]
PROJECT NARRATIVE
Project: J21090228 Rockingham
Pace Project No.: 92560936
Method: EPA 350.1 Rev 2.0 1993
Description: 350.1 Ammonia
Client: Duke Energy
Date: September 20,2021
General Information:
1 sample was analyzed for EPA 350.1 Rev 2.0 1993 by Pace Analytical Services Asheville. All samples were received in acceptable
condition with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form(SCUR)attached
at the end of this report.
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank,where applicable,with any exceptions noted below.
1 Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences(RPDs)were within acceptance criteria with any exceptions noted below.
QC Batch:648267
A matrix spike and/or matrix spike duplicate(MS/MSD)were performed on the following sample(s): 92560449001,92560450001
M1:Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample(LCS)recovery.
•MS (Lab ID:3399993)
•Nitrogen,Ammonia
•MSD (Lab ID:3399994)
•Nitrogen,Ammonia
Additional Comments:
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 8 of 22

Pace Analytical Services,LLC
aceAnalytical 9800 Kinsey Ave. Suite100
Huntersville,NC 28078078
www.pacslabs.com [phone]
PROJECT NARRATIVE
Project: J21090228 Rockingham
Pace Project No.: 92560936
Method: SM 5220D-2011
Description: 5220D COD
Client: Duke Energy
Date: September 20,2021
General Information:
1 sample was analyzed for SM 5220D-2011 by Pace Analytical Services Asheville. All samples were received in acceptable condition
with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form(SCUR)attached at the end
of this report.
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Sample Preparation:
The samples were prepared in accordance with SM 5220D-2011 with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank,where applicable,with any exceptions noted below.
Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences(RPDs)were within acceptance criteria with any exceptions noted below.
Additional Comments:
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 9 of 22

Pace Analytical Services,LLC
9800 Kincey Ave. Suite 100
aceAnalytical Huntersville,NC 28078
www.pacelabs.com [phone]
PROJECT NARRATIVE
Project: J21090228 Rockingham
Pace Project No.: 92560936
Method: SM 5310B-2011
Description: 5310B TOC
Client: Duke Energy
Date: September 20,2021
General Information:
1 sample was analyzed for SM 5310B-2011 by Pace Analytical Services Asheville. All samples were received in acceptable condition
with any exceptions noted below or on the chain-of custody and/or the sample condition upon receipt form(SCUR)attached at the end
of this report.
Hold Time:
The samples were analyzed within the method required hold times with any exceptions noted below.
Method Blank:
All analytes were below the report limit in the method blank,where applicable,with any exceptions noted below.
Laboratory Control Spike:
All laboratory control spike compounds were within QC limits with any exceptions noted below.
Matrix Spikes:
All percent recoveries and relative percent differences(RPDs)were within acceptance criteria with any exceptions noted below.
Additional Comments:
This data package has been reviewed for quality and completeness and is approved for release.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
without the written consent of Pace Analytical Services,LLC. Page 10 of 22

Pace Analytical Services,LLC
9800 Kincey Ave. Suite 100
aceAnalytical Huntersville,NC 28078
www.pacalabs.com [phone]
ANALYTICAL RESULTS
Project: J21090228 Rockingham
Pace Project No.: 92560936
Sample: OUTFALL 001 Lab ID: 92560936001 Collected: 09/13/21 11:10 Received: 09/13/21 12:55 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
5210B BOD,5 day EDN Analytical Method:SM 5210B-2011 Preparation Method:SM 5210B-2011
Pace Analytical Services-Eden
BOD,5 day 2.4 mg/L 2.0 2.0 1 09/14/21 16:30 09/19/21 11:49 R6
200.7 MET ICP Analytical Method:EPA 200.7 Rev 4.4 1994 Preparation Method:EPA 200.7 Rev 4.4 1994
Pace Analytical Services-Asheville
Iron 489 ug/L 50.0 41.5 1 09/16/21 01:44 09/16/21 19:01 7439-89-6
Zinc 39.1 ug/L 10.0 9.5 1 09/16/21 01:44 09/16/21 19:01 7440-66-6
350.1 Ammonia Analytical Method:EPA 350.1 Rev 2.0 1993
Pace Analytical Services-Asheville
Nitrogen,Ammonia ND mg/L 0.10 0.031 1 09/18/21 12:22 7664-41-7
5220D COD Analytical Method:SM 5220D-2011 Preparation Method:SM 5220D-2011
Pace Analytical Services-Asheville
Chemical Oxygen Demand 57.3 mg/L 25.0 12.5 1 09/17/21 01:43 09/17/21 05:14
5310E TOC Analytical Method:SM 5310B-2011
Pace Analytical Services-Asheville
Total Organic Carbon 10.1 mg/L 1.0 0.50 1 09/16/21 17:42 7440-44-0
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:09/20/2021 05:27 PM without the written consent of Pace Analytical Services,LLC. Page 11 of 22

Pace Analytical Services,LLC
aceAnalytical 9800 Kinsey Ave. Suite 100
Huntersville,NC 28078
www.pacelabs.com [phone]
QUALITY CONTROL DATA
Project: J21090228 Rockingham
Pace Project No.: 92560936
QC Batch: 646929 Analysis Method: SM 5210B-2011
QC Batch Method: SM 5210B-2011 Analysis Description: 5210E BOD,5 day Final EDN
Laboratory: Pace Analytical Services-Eden
Associated Lab Samples: 92560936001
METHOD BLANK: 3393363 Matrix: Water
Associated Lab Samples: 92560936001
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
BOD,5 day mg/L ND 2.0 2.0 09/19/21 11:21
LABORATORY CONTROL SAMPLE: 3393364
Spike LCS LCS %Rec
Parameter Units Conc. Result %Rec Limits Qualifiers
BOD,5 day mg/L 198 186 94 84.6-115.4
SAMPLE DUPLICATE: 3393366
92560862001 Dup Max
Parameter Units Result Result RPD RPD Qualifiers
BOD,5 day mg/L 81.1 91.5 12 25
Results presented on this page are in the units indicated by the"Units"column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:09/20/2021 05:27 PM without the written consent of Pace Analytical Services,LLC. Page 12 of 22

Pace Analytical Services,LLC
aceAnalytical 9800 Kincey Ave. Suite100
Huntersville,NC 28078078
www.pacalabs.com [phone]
QUALITY CONTROL DATA
Project: J21090228 Rockingham
Pace Project No.: 92560936
QC Batch: 647455 Analysis Method: EPA 200.7 Rev 4.4 1994
QC Batch Method: EPA 200.7 Rev 4.4 1994 Analysis Description: 200.7 MET
Laboratory: Pace Analytical Services-Asheville
Associated Lab Samples: 92560936001
METHOD BLANK: 3396120 Matrix: Water
Associated Lab Samples: 92560936001
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Iron ug/L ND 50.0 41.5 09/16/21 18:54
Zinc ug/L ND 10.0 9.5 09/16/21 18:54
LABORATORY CONTROL SAMPLE: 3396121
Spike LCS LCS %Rec
Parameter Units Conc. Result %Rec Limits Qualifiers
Iron ug/L 5000 5180 104 85-115
Zinc ug/L 500 527 105 85-115
MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3396122 3396123
MS MSD
92560936001 Spike Spike MS MSD MS MSD %Rec Max
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual
Iron ug/L 489 5000 5000 4390 4380 78 78 70-130 0 20
Zinc ug/L 39.1 500 500 639 625 120 117 70-130 2 20
Results presented on this page are In the units indicated by the"Units"column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:09/20/2021 05:27 PM without the written consent of Pace Analytical Services,LLC. Page 13 of 22

Pace Analytical Services,LLC
cio I aceAnalytical 9800 Kincey Ave. Suite 100
Huntersville,NC 28078
www.pacelabs.com
[phone]
QUALITY CONTROL DATA
Project: J21090228 Rockingham
Pace Project No.: 92560936
QC Batch: 648267 Analysis Method: EPA 350.1 Rev 2.0 1993
QC Batch Method: EPA 350.1 Rev 2.0 1993 Analysis Description: 350.1 Ammonia
Laboratory: Pace Analytical Services-Asheville
Associated Lab Samples: 92560936001
METHOD BLANK: 3399989 Matrix: Water
Associated Lab Samples: 92560936001
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Nitrogen,Ammonia mg/L ND 0.10 0.031 09/18/21 11:58
LABORATORY CONTROL SAMPLE: 3399990
Spike LCS LCS %Rec
Parameter Units Conc. Result %Rec Limits Qualifiers
Nitrogen,Ammonia mg/L 5 5.1 103 90-110
MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3399991 3399992
MS MSD
92560449001 Spike Spike MS MSD MS MSD %Rec Max
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual
Nitrogen,Ammonia mg/L 24.5 5 5 29.9 29.8 109 107 90-110 0 10
MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3399993 3399994
MS MSD
92560450001 Spike Spike MS MSD MS MSD %Rec Max
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual
Nitrogen,Ammonia mg/L 40.5 5 5 43.6 44.7 63 83 90-110 2 10 M1
Results presented on this page are in the units indicated by the"Units"column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:09/20/2021 05:27 PM without the written consent of Pace Analytical Services,LLC. Page 14 of 22

Pace Analytical Services,LLC
aceAnalytical® 9800 Kincey Ave. Suite 100
, Huntersville,NC 2807878
www.pacslabs.com [phone]
QUALITY CONTROL DATA
Project: J21090228 Rockingham
Pace Project No.: 92560936
QC Batch: 647873 Analysis Method: SM 5220D-2011
QC Batch Method: SM 5220D-2011 Analysis Description: 5220D COD
Laboratory: Pace Analytical Services-Asheville
Associated Lab Samples: 92560936001
METHOD BLANK: 3398374 Matrix: Water
Associated Lab Samples: 92560936001
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Chemical Oxygen Demand mg/L ND 25.0 12.5 09/17/21 05:09
LABORATORY CONTROL SAMPLE: 3398375
Spike LCS LCS %Rec
Parameter Units Conc. Result %Rec Limits Qualifiers
Chemical Oxygen Demand mg/L 750 792 106 90-110
MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3398376 3398377
MS MSD
92559620008 Spike Spike MS MSD MS MSD %Rec Max
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual
Chemical Oxygen Demand mg/L 107 100 100 214 217 107 109 90-110 1 3
MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3398378 3398379
MS MSD
92559647001 Spike Spike MS MSD MS MSD %Rec Max
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual
Chemical Oxygen Demand mg/L 40.6 100 100 143 145 102 105 90-110 2 3
Results presented on this page are in the units indicated by the"Units"column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:09/20/2021 05:27 PM without the written consent of Pace Analytical Services,LLC. Page 15 of 22

Pace Analytical Services,LLC
e/7: 9800 Kincey Ave. Suite 100
aceAnalytical Huntersville,NC 28078
www.pacelabs.cam [phone]
QUALITY CONTROL DATA
Project: J21090228 Rockingham
Pace Project No.: 92560936
QC Batch: 647640 Analysis Method: SM 5310B-2011
QC Batch Method: SM 5310B-2011 Analysis Description: 5310B TOC
Laboratory: Pace Analytical Services-Asheville
Associated Lab Samples: 92560936001
METHOD BLANK: 3396784 Matrix: Water
Associated Lab Samples: 92560936001
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Total Organic Carbon mg/L ND 1.0 0.50 09/16/21 16:12
LABORATORY CONTROL SAMPLE: 3396785
Spike LCS LCS %Rec
Parameter Units Conc. Result %Rec Limits Qualifiers
Total Organic Carbon mg/L 25 23.5 94 90-110
MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3396786 3396787
MS MSD
92560936001 Spike Spike MS MSD MS MSD %Rec Max
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual
Total Organic Carbon mg/L 10.1 25 25 34.2 34.6 96 98 90-110 1 10
MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 3396788 3396789
MS MSD
92561091001 Spike Spike MS MSD MS MSD %Rec Max
Parameter Units Result Conc. Conc. Result Result %Rec %Rec Limits RPD RPD Qual
Total Organic Carbon mg/L 10.1 25 25 34.0 33.8 95 95 90-110 1 10
Results presented on this page are in the units indicated by the"Units"column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:09/20/2021 05:27 PM without the written consent of Pace Analytical Services,LLC. Page 16 of 22

Pace Analytical Services,LLC
'aceAnalytical 9800 Kincey Ave. Suite 100
Huntersville,NC 28078
www.pacelabs.cam [phone]
QUALIFIERS
Project: J21090228 Rockingham
Pace Project No.: 92560936
DEFINITIONS
DF-Dilution Factor,if reported,represents the factor applied to the reported data due to dilution of the sample aliquot.
ND-Not Detected at or above adjusted reporting limit.
TNTC-Too Numerous To Count
J-Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL-Adjusted Method Detection Limit.
PQL-Practical Quantitation Limit.
RL-Reporting Limit-The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S-Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270.The result for each analyte is
a combined concentration.
Consistent with EPA guidelines,unrounded data are displayed and have been used to calculate%recovery and RPD values.
LCS(D)-Laboratory Control Sample(Duplicate)
MS(D)-Matrix Spike(Duplicate)
DUP-Sample Duplicate
RPD-Relative Percent Difference
NC-Not Calculable.
SG-Silica Gel-Clean-Up
U-Indicates the compound was analyzed for,but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Reported results are not rounded until the final step prior to reporting.Therefore,calculated parameters that are typically reported as
"Total"may vary slightly from the sum of the reported component parameters.
Pace Analytical is TNI accredited.Contact your Pace PM for the current list of accredited analytes.
TNI-The NELAC Institute.
ANALYTE QUALIFIERS
M1 Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample(LCS)recovery.
R6 The RPD between valid sample dilutions exceeded 30%.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:09/20/2021 05:27 PM without the written consent of Pace Analytical Services,LLC. Page 17 of 22

Pace Analytical Services,LLC
aceAnalytical® 9800 Kincey Ave. Suite100
Huntersville,NC 28078078
www.pudabs.cam [phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: J21090228 Rockingham
Pace Project No.: 92560936
Analytical
Lab ID Sample ID QC Batch Method QC Batch Analytical Method Batch
92560936001 OUTFALL 001 SM 5210B-2011 646929 SM 5210B-2011 647393
92560936001 OUTFALL 001 EPA 200.7 Rev 4.4 1994 647455 EPA 200.7 Rev 4.4 1994 647549
92560936001 OUTFALL 001 EPA 350.1 Rev 2.0 1993 648267
92560936001 OUTFALL 001 SM 5220D-2011 647873 SM 52200-2011 647901
92560936001 OUTFALL 001 SM 5310B-2011 647640
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced,except in full,
Date:09/20/2021 05:27 PM without the written consent of Pace Analytical Services,LLC. Page 18 of 22

Document Nurse; --- __- Document Revised:February 7,IO1B
duly Sample Con dfitlon Upost Recetp3fSCUl) Page 1 of I
„'�J Document No.: Issuing Authority:
r' FMCS-CAR -CS Pace Caroilnas Qua Office
laboratory receiving samples:
Asheville Eden I
❑ Greenwood[] NuntorsvIl(e❑ ftalelgh❑ MechanlccvilleD I
mr,;�
-. - ulent Nantes: ; WO# 92560936
I �( ( V )(%(- r Projectti:
Courier: BPace Fed Ex UPS Q ter. r nt LVJ1JJ'
IIII11111
(
Custody Seal Present? Ores []No Seals Intact? Ores QNo
•
eate/Inftiab Parton Esamkatrp Cantinb: I I 1 1
Packing Material: QBubble Wrap ❑Bubble Bags (]NoneiTT"' I i
Tlzermarrtater. pp 0 Other �tB�tologlta171saue Frozen?
•
❑IR Gun 1 !- ' iypa of ico: Des QNo ❑N/A
� ❑Wet) (]Blue ❑Nme ,
Cooler Temp('C): 3 .
Correction Factor:Add/Subtract(•C) (1)
Cooler Temp[enacted CO: -j ` I ---" Temp shoed be above freezing to fi•C
panties out of temp criteria.Samples on Ice,coent process
]/ ha bsgn 1 .USDA Regulated Sal ![ N/A,water sample)
Old samples originate in a quarantine zone within the United States:CA,NY,or SC(check mapsj7 Old sanptesanfinate from a foreign source(internationally, i 1
I as n ifnduckgHawai and Puerto Rico)?QYes
�J pile.
-- Cornments/Oiacreparuy:
Char of Custody Present? f .
•(lYes ONa °WA L ,--- 1
Samples Arrived within Hold time?
es ■no ❑N/A L ii
Short Hold Time Analysis(<72 hr.)? faits QNa Iw/A 1 `)(.; t...-) •
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Rush Turn Around Time Requested?
[ayes -0No aN/A 4.
SufficientVcrume? Ar r ayes ONo ❑N/A S.
•
•
Correct Containers Used? [Jars Ono DNA 6.
•
-Pace Containers Used? ' javao ON/A
Containers intact? ■ties !No ill N/A 7.
Dissolved analysis:Samples Fletd Filtered? DYes •No rN/A R. i
Sample labels Match COC7 -
QYes ONO C1N/A 9.
!
-Includes Oatefrme/10/Analysis Matrix: f
Headspace in VOA Vials( S-6mmJ? �s,(( s L I .
LJYes ❑na num lo. l )'Lk G r `t. k('C{_, 1.C..0
Trip frank Present? Oyes QNo .DN/A 11. .
i
Trip Blank Custody Seak Present? Yu II to ISJN/A
comtitf/TS/SAMPLE OISCREPANJ'CY
Field Data Required? Dyes ❑No
Lot 10 of split containers:
Cll[NIT NOTTSCITKlv/RISOU mCN �� i
• 1
Person contacted:
___________
Project Minster SCURF Review: _ �_________
Otte
•
Project Manager SRF Review: ........
Otte:
Page 19 of 22

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aceAnalytical
Sample Receiving Non-Conformance Form (NCF)
Date: q i �:z �rj r Evaluated by: L � I Vrp Affix Workorder/Login Label Here or List Pace
Client: r Jn ' r Workorder Number or MTJL Log-in Number
� � � ��! �1��� Here
1. If Chain-of-Custody(COG) is not received: contact client and if necessary, fill out a COC and indicate that it was filled out by
lab personnel. Note issues on this NCF.
2. If COC is incomplete,check applicable issues below and add details where appropriate:
Collection date/time missing or Analyses or analytes:missing or Samples listed on COC do not match samples
incorrect clarification needed received(missing,additional,etc.)
Sample IDs on COC do not
match sample labels Required trip blanks were not received Required signatures are missing
Comments/Details/Other Issues not listed above:
3. Sample integrity issues: check applicable issues below and add details where appropriate:
Samples:Condition needs to be brought to
Samples:Past holding time lab personnel's attention(details below) . `\Preservation: Improper
Temperature: not within acceptance criteria(typicalh
Samples:Not field filtered Containers:Broken or compromised a-6C)
Samples:Insufficient volume
received Containers: Incorrect Temperature: Samples arrived frozen
Samples:Cooler damaged or Custody Seals:Missing or compromised on
compromised samples,trip blanks or coolers Vials received with improper headspace
Samples:contain chlorine or
sulfides Packing Material:Insufficient/Improper Other:
Comments/Details:
`\ (.;(; 1� cum d k E;.iet t { ) L )
4. If Samples not preserved properly and Sample Receiving adjusts pH, add details below:
Sample ID:(_f;t ii c,"it ,,,t1-1r(F-Cr ( Date/Time: till.'{) 1> 1 i Amount/type pres added: . : S 1 l
r l
Preserved by: (' Initial and Final pH: 141 i () Lot#of pres added: 0 46 1.. L l
Sample ID: Date/Time: Amount/type pres added:
Preserved by: Initial and Final pH: Lot of pres added:
Sample ID: Date/Time: Amount/type pres added:
Preserved by: Initial and Final pH: Lot#of pres added:
5. Client Contact: If client is contacted for any issue listed above,fill in details below:
Client: Contacted per:
PM Initials: Date/Time:
Client Comments/Instructions:
ALL-C-011-rev.00, 05Jul2018
Page 21 of 22

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CHAIN OF CUSTODY RECORD AND ANALYSIS REQUEST FORM
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From Carolina ;
ORIGINAL Co C.
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SAMPLE i IV 411Kkof PACE
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place 2 copies of COC in the cooler

Dan-Riveretimbintrd-CycteNPDES Field Parameter Analysis Sheet
Date: ?/Z0/21 Time: 0700 NPDES Outfall: l Parameter: pH t/
pH Meter Model No. Accumet AP62
Meter Serial No. 219930
Calibration
Calibration Buffers i Check Buffer
pH Post Analysis
Cal 4.00 I 4.00 10.00 10.00 Percent j Check Temp.
7.00 Buffer Check
Date Time Analyst Buffer Buffer Buffer Buffer i Eff. 7.00 j I Remarks
(24 hr) Initials ("C)
(mV)* ` (SU)** (mV)* (SU)** (%)t Buffer pH Temp. Time
(SU)** (SU)** (CC) (24 hr)
tY112-1 07D0
CVIIG 175- i{-.vo -(75- •as R7.Z (e•a`� ZI.Z 7.02 2a.S i 12SS
* Buffer mV readings should be within the following ranges: pH 4.00= 180± 30 mV, 10.00= -180± 30 mV
** Buffer readings should be within ±0.1 of the buffer's actual value
t The Slope must be within 56-62 mV or 95%- 105%. The Efficiency must be within 95-105%(0.95 - 1.05)
Outfall Sample Date Sample Time Analysis pH (S.U.) Temp(°C) Initials
Time
da V2-0/ 74 10 So ,oc o - 64 V 24- to /�r/f