NC0000396_Camera Inspection of Piping_20150427

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North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R. van der Vaart
Governor Secretary
April 27, 2015
Mr. Harry Sideris, 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: Camera Inspection of Piping
Permit NC0000396
Asheville Steam Station
Dear Mr. Sideris,
The Division has received your request to lower the water surface in the 1964 ash pond at the
Asheville Steam Electric Plant. The water surface has to be lowered to conduct a video inspection of
HDPE piping that leads from the ash pond to Outfall 001. This inspection is necessary to determine
any potential structural problems. The wastewater from 1964 pond is released to Outfall 001 as part
of daily plant operations. The lowering of the water level will add 0.16 MGD to the average wastewater
flow of 3.52 MGD and will represent only 4.5% of the typical discharge. The flow from this operation
will be sampled in accordance with the existing NPDES wastewater permit. Upon the completion of the
video inspection, the water level in the pond will be allowed to return to normal level. The Division
approves the proposed lowering of the water in the 1964 pond provided that all the terms and
conditions in the NPDES permit for the facility will be met during the proposed project and the water
quality standards in the receiving stream will not be contravened.
If you have any questions, please feel free to contact me at the following e-mail address:
[e-mail] or telephone number: 919-807-6309.
Sincerely,
Jeff Poupart
Water Quality Permitting Chief
Division of Water Resources
cc: Central Files
EPA Region IV (e-e-copy)
Asheville Regional Office / Water Quality (e-copy)
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Phone:[phone] Internet:www.ncwaterquality.org
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