NC0001422_Correspondence_20221202

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
NORTH CAROLINA
Environmental Quality
December 20, 2022
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
Subject: Draft NPDES Permit
Permit NC0001422
L.V. Sutton Energy Complex
New Hanover County
Facility Class I
Dear Ms. Bednarcik:
Enclosed with this letter is a copy of the draft Permit for your facility. Please review the draft very
carefully to ensure thorough understanding of the conditions and requirements it contains.
The draft Permit contains the following significant changes from your current permit:
• Limits for Total Arsenic, Total Selenium, and Total Nickel have been removed from the
permit based on the results of the Reasonable Potential Analysis (Outfall 001).
• The monitoring frequency for the Total Mercury, Total Arsenic, Total Lead, Total Selenium,
Total Cadmium, Total Aluminum, Total Copper, Total Nickel, Total Zinc, Turbidity, and
Hardness was reduced from Weekly to Monthly based on the results of the Reasonable
Potential Analysis (Outfall 001).
• Monitoring for Total Iron has been removed from the permit since the water quality standard
for Iron has been eliminated in 2015.
• Limits for Total Arsenic and Total Nickel have been removed from the permit based on the
results of the Reasonable Potential Analysis (Outfall 008).
• The Section A. (19.) entitled Ash Settling Basin was removed from the permit since wastewater
is no longer discharged to the Ash Basin.
• The Special Condition A. (13.) entitled Clean Water Act Section 316(b) was updated based on
the approval of the 316(b) report.
• Fish tissue monitoring frequency has been reduced to twice per permit cycle (5 years) from
annually based on the review of the fish tissue data.
1:tE
NORTH CAROLINA
Department of Environmental Duali�
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh, North Carolina 27699-1611
919.707.9000

Please provide any comments you have regarding the draft permit to this office by January
23, 2023. At this time, the Division is also publishing a notice in the newspapers of general
circulation in New Hanover County, inviting public comment on the draft major modification.
Following the 30-day comment period, we will review all pertinent comments received and take
appropriate action on the permit modification.
The NPDES Standard Conditions (Parts II, III, and IV) are not included with this draft. They can
be found at the following link if you would like to review them in conjunction with this draft permit.
https: / /bit.ly/2BZ4xxx
If you have any questions about the NPDES permit process, please contact me at the following e-
mail address: [e-mail], or telephone number: 919-707-3606.
Sincerely,
Sergei Chernikov, Ph.D.
Environmental Engineer III
Complex NPDES Permitting Unit
cc: NPDES Files
EPA Region IV (e-copy)
Wilmington Regional Office / Surface Water Protection (e-copy)
Aquatic Toxicology Unit (e-copy)
TACU (e-copy)
£D_EQ
-4
NORTH CAROLINA
Department of Environmental Duellry
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh, North Carolina 27699-1611
919.707.9000