NC0000396_Correspondence_20190529 (3)

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
NORTH CAROLINA
Environmental Quality
May 24, 2019
Mr. Paul Draovitch, Senior Vice President
Environmental, Health and Safety
Duke Energy Carolinas, LLC
Mail Code EC 13K
P.O. Box 1006
Charlotte, North Carolina 28201-1006
Subject: Issuance of NPDES Major Modification
Permit NC0000396
Asheville Steam Electric Plant
Buncombe County
Facility Class I
Dear Mr. Draovitch:
The Division of Water Resources is forwarding herewith the Final NPDES Major Modification for
Asheville Steam Electric Plant. This Major 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 dated October 15, 2007 (or as
subsequently amended).
No major changes were made to the draft Major Modification sent to you on March 20,
2019.
The Division is unable to grant your request for the removal or three internal outfalls, effluent
guidelines require an independent compliance with the Technology Based Effluent Limits for
each outfall.
The final Major Modification maintains the following significant changes identified in the
letter sent on March 20, 2019:
To accommodate changes required for conversion to Combined Cycle Plant four
additional internal outfalls were added to the permit: Outfall 001A, Outfall 001B, Outfall
001 C, Outfall 001 D.
Instream temperature limits were added to Outfall 001 to assure compliance with the
state temperature standard, this change is required because cooling tower blowdown was
added to this Outfall.
The Clean Water Act Section 316(b) Special Condition was updated.
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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 permits that may be required.
If you have any questions on this permit, please contact Sergei Chernikov at 919-707-3606.
Sincerely,
Linda Culpepper, Director
Division of Water Resources
Hardcopy: Central Files,
NPDES Files
Asheville Regional Office, Water Quality
E-copy: US EPA, Region IV
WSS/Aquatic Toxicology Branch
PERCS
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