NC0004774_Alternate Outfall Location #2_20170525

Water Resources
ENVIRONMENTAL QUALITY
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S JAY ZIMMERMAN
Director
May 25, 2017
Mr. Shannon Langley
EHS CCP Environmental Programs
Duke Energy
410 South Wilmington St.
Raleigh, North Carolina 27601
Subject: Alternate Outfall Locations #2
NPDES Permit NC0004774
Buck Combined Cycle Station
Rowan County
Dear Mr. Langley:
In response to our recent discussions and your letter of March 29, I am writing to confirm that
the Division fully intends to include provisions in the draft Buck permit that authorize the
discharge of treated ash pond waters to the Yadkin River at the existing Outfall 002 and to the
mainstem of the river at a new Outfall 007 to be installed at a point approximately due north of
Outfall 002. Permit conditions for the outfalls will set forth necessary limitations and other
requirements to ensure the protection of water quality and conformance with applicable
regulations. The draft permit will be subject to public review and could be revised in response
to comments received. However, we believe that the discharge will have less environmental
impact at the new outfall locations than at the existing Outfall 002 due to the increased dilution
available in the mainstem of the river.
Please let me know if you have other questions in this matter.
Hardcopy Central Files
NPDES Files
Mooresville Regional Office
E -copy: US EPA, Region IV
Sincerely,
Jeff Poupart
Water Quality Permitting Section Chief
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919 807 6300