NC0000396_Correspondence_20200415

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
Mr. Paul Draovitch, Senior Vice President
Environmental, Health and Safety
Duke Energy Carolinas, LLC
Mail Code EC13K
P.O. Box 1006
Charlotte, North Carolina 28201-1006
Dear Mr. Draovitch:
NORTH CAROLINA
Environmental Quality
April 9, 2020
Subject: Permit Major Modification
Permit NC0000396
Asheville Steam Electric Plant
Buncombe County
Facility Class I
We have received your request for a Major Modification of the subject facility. The request has
been granted.
Enclosed with this letter is modified permit. Please replace the existing permit with the
modified permit.
The permit modification contains the following significant changes from your current
permit:
• To accommodate changes required for conversion to Combined Cycle Plant, evaporator system
discharge was added to Outfall 002 and once -through cooling water for coal units was removed.
• Measurement frequency for flow and temperature was reduced from Daily to Monthly due to
the significant flow reduction (Outfall 002).
• Monitoring for the Total Residual Chlorine and the Time of Chlorine Addition was removed
from Outfall 002 due to the cessation of Chlorine addition.
• Monitoring for Total Copper and Total Chromium was added to Outfall 002 based on the
review of the effluent data provided by the facility.
No other changes have been made. This permit modification 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.
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North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000

Please take notice that this permit is not transferable. Part II, EA addresses the requirements
to be followed in case of change in ownership or control of this discharge.
If you have any questions or need additional information, please contact Sergei Chernikov,
telephone number [phone] or email: [e-mail].
Sincerely,
S. Daniel Smith, Director
Division of Water Resources
cc: Central Files
NPDES Files
Wilmington Regional Office/Water Quality
WSS/Aquatic Toxicology Unit (e-copy)
EPA Region IV (e-copy)