NC0038377_Bioassay Compliance Evaluation Inspection_20240102

DocuSign Envelope ID: 7C3E03AA-3372-48FA-A3BD-3lC5F8E87513
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
NORTH CAROLINA
Environmental Quality
January 2, 2024
Via Electronic Mail ([e-mail])
Joseph Slade
Duke -Mayo Steam Electric Plant
10660 Boston Rd.
Roxboro, NC 27574
Subject: Bioassay Compliance Evaluation Inspection
Whole Effluent Toxicity Test
Duke -Mayo Steam Electric Plant
NPDES Permit No: NCO038377/002
Person County
Dear Mr. Slade:
Whole Effluent samples were collected from Duke -Mayo Steam Electric Plant on May 2, 2023, by Robert
Langley of Division of Water Resource (DWR), Aquatic Toxicity Branch. The sample was for use in an
acute 24-hour Pimephales promelas pass -fail toxicity test, which was performed by the staff at DWR
Aquatic Toxicity Branch. This test passed for the toxicity inspection. Toxicity test information follows.
Test Type Acute 24-hour Pimephales promelas pass -fail
Test Concentration 90 %
Test Result Pass (for Toxicity Inspection)
If you have any questions regarding the attached report or any of the findings, please contact Cheng Zhang
at: [phone] (or email: cheng zhang(a�deq.nc.gov).
Attachments: Compliance Inspection Report
Cc: Laserfiche
NORTH CAROLINAD ���
Depa ,M NE,Amnm W1U-IR,
Sincerely,
DocuSigned by:
Vaun t,SSa f.
B2916E6AB32144F...
Vanessa E. Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources
North Carolina Department of Environmental Quality I Division of Water Resources
Raleigh Regional Office 1 3800 Barrett Drive I Raleigh, North Carolina 27609
919.791.4200

DocuSign Envelope ID: 7C3E03AA-3372-48FA-A3BD-31C5F8E87513
United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 IN 2 u 3 I NCO038377 111 121 23/05/02 I17 18 LB] 19 I s I 201
21111I I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I II I I I I I r6
Inspection
Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved -------------------
67
70 LJ 71 L72 Ln73 74 79 I I I I
80
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES Dermit Number)
08:30AM 23/05/02
22/01/01
Mayo Steam Electric Power Plant
10660 Boston Rd
Exit Time/Date
Permit Expiration Date
Roxboro NC 27573
08:45AM 23/05/02
23/07/31
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
Joseph Heath Slade/ORC/336-597-7398/
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Tom Copolo,10660 Boston Rd Roxboro NC 27574/Plant Manager/336-597-7307/
No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Other
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Cheng Zhang Docusignedby: DWR/RRO WQ/919-791-4200/ E
�,�2�4,� 1/2/2024
D6171508P EC41F.-
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
DocuSigned by:
1/3/2024
VcUn t,SSa f.
"-B2916E6AB32144F...
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.
Page#

DocuSign Envelope ID: 7C3E03AA-3372-48FA-A3BD-31C5F8E87513
NPDES yr/mo/day Inspection Type
NCO038377 I11 12I 23/05/02 117 18 IBI
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Whole effluent samples were collected on May 2 by Robert Langley for use in an acute Pimephales
promelas pass -fail toxicity test. The test was performed by ATB. The test using these samples
resulted in a pass.
Page#