NC0003433_Correspondence_20240617

DocuSign Envelope ID: 5E516DB2-8C1E-4867-8625-9A2C1F93A458
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
Ms. Jessica Bednarcik, Senior Vice President
Environmental, Health and Safety
Duke Energy Carolinas, LLC
Mail Code EC13K
P.O. Box 1006
Charlotte, North Carolina 28201-1006
Dear Ms. Bednarcik:
NORTH CAROLINA
Environmental Quality
June 17, 2024
Subject: Final NPDES Permit
Permit NC0003433
Cape Fear Steam Electric
Power Plant
Chatham County
Facility Class I
The Division of Water Resources is forwarding herewith the Final Permit for Cape Fear Steam Electric Power
Plant. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the
Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency dated
October 15, 2007 (or as subsequently amended).
The Final Permit contains no significant changes from your Draft Permit.
The Final Permit maintains the following significant changes contained in the Draft Permit:
1. The description of wastewater types discharged from Outfall 007 was updated to reflect the current
operational status.
2. The Internal Outfall 001 was removed from the permit because this outfall was eliminated.
3. The S-05 Outfall was removed from the permit based upon this former seep being dispositioned in
accordance with consent order EMC SOC WQ 19-001 and coverage in the Seep Corrective Action
Plan.
4. The Division is unable to eliminate Selenium limits for Outfall 007 since this Outfall has not discharged
since late 2018 and the RPA cannot be conducted.
5. The monitoring frequency for Arsenic, Selenium, and Mercury was reduced from weekly to monthly
based on the review of the effluent data and frequency of discharge.
6. The Division is unable to eliminate the WET testing requirements for Outfall 007 to be consisted with
the requirements of 15A NCAC 2B .0500.
7. The requirements associated with decanting and dewatering have been removed from Outfall 007
because decanting has been completed and dewatering discharge is routed through Outfall 008.
8. The Effluent page for Outfall 008 decanting was eliminated from the permit since this activity has been
completed and dewatering was initiated on 11 /11 /2019.
9. The limits for Selenium have been removed from the permit based on the results of the RPA (Outfall
008 dewatering).
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CARCLINA
919.707.9000

DocuSign Envelope ID: 5E516DB2-8C1E-4867-8625-9A2C1F93A458
10. The monitoring frequency for Arsenic, Selenium, and Mercury was reduced from weekly to monthly
based on the results of the RPA (Outfall 008 dewatering).
11. The monitoring requirements for Aluminum, Nickel, Lead, and Cadmium were eliminated from the
permit based on the results of the RPA (Outfall 008 dewatering).
12. The limits and monitoring requirements for Copper were eliminated from the permit based on the
results of the RPA (Outfall 008 dewatering).
13. The Division is unable to reduce frequency of the WET testing requirements for Outfall 008 until
dewatering is complete to be consistent with the Division's dewatering strategy.
14. The Division is unable to eliminate requirements associated with dewatering from Outfall 008 until
dewatering is completed.
15. The Division is unable to eliminate Selenium limits for Outfall 008 (dewatering and groundwater
remediation) since this phase of the operation has not been initiated and the RPA cannot be conducted.
16. The monitoring frequency for Arsenic, Selenium, Mercury, Aluminum, Nickel, Beryllium, Copper,
Lead, Silver, and Zinc was reduced from weekly to monthly based on the results of the RPA (Outfall
008 dewatering and groundwater remediation).
17. The monitoring frequency for instream monitoring was reduced from Monthly to Quarterly based on
the review of the instream data.
18. The monitoring frequency for fish tissue instream monitoring was reduced from Annually to once per
permit term based on the review of the fish tissue data.
If any parts, measurement frequencies, or sampling requirements contained in this permit are unacceptable to
you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt
of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the office of Administrative Hearings, 6714 Mail Service Center,
Raleigh, North Carolina 27699-6714. Unless such a demand is made, this permit shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to
obtain other permits which may be required by the Division of Water Resources or any other Federal, State, or
Local governmental regulations.
If you have any questions or need additional information, please contact Sergei Chernikov, telephone number
[phone] or email: [e-mail].
Sincerely,
IDocuSigned by:
0b+S 06W Jt A,
Douglas Bowen
Environmental Supervisor II
Division of Water Resources
cc: Central Files
NPDES Files
Raleigh Regional Office/Water Quality
WSS/Aquatic Toxicology Unit (e-copy)
EPA Region IV (e-copy)
REQ5 North Carolina Department ofEnvironmental Quality I Division ofWater Resources
512 North Salisbury Street 1 1611 Mail Service Center I Raleigh, North Carolina 27699-1611
NORTH CAROLINA 919.707.9000
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