WQ0000020_NOV2015PC0303_20160316

Water Resources
ENVIRONMENTAL QUALITY
February 25, 2016
Harry K. Sideris —SVP, Environmental, Health & Safety
Duke Energy
526 South Church Street, ECUP
Charlotte, NC 28202
Subject: Incident Closure
NOV-2015-PC-0303
Permit No. WQ0000020
Duke Energy Progress Inc.
Coal Combustion Products Structural Fill Projects
Buncombe County
Dear Mr. Sideris,
PAT MCCRORY
Govemor
DONALD R. VAN DER VAART
Secretary
S. JAY ZIMMERMAN,
Director
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The Asheville Regional Office (ARO) received your December 18, 2015 letter response to a
recent Notice of Violation (NOV-2015-PC-0303) involving violations of permit WQ0000020 at
the Asheville Regional Airport Coal Combustion Products (CCP) Structural Fill Project. More
specifically, site inspections conducted by Duke Energy on October 29, 2015 noted an erosion -
induced breach of the soil cap and subsequent CCP exposure at Area 1 and an erosion -induced
breach of the soil cap and subsequent exposure of the plastic (HDPE) liner at Area 4. The
violations cited in the NOV include a failure to notify in accordance with permit condition
IV.12.e and a failure to properly maintain and operate a CCP structural fill facility in accordance
with permit condition 111.1.
According to permit condition IV.12.e, the Permittee is responsible for contacting the ARO, as
soon as possible, but in no case more than 24 hours or on the next working day following the
occurrence or first knowledge of the occurrence of a breach and/or severe erosion of the liner
systems. Any erosion of the soil cap that results in the exposure of the HDPE liner, GCL liner,
and/or CCP is a non-compliant condition and is required to be reported under permit conditions
IV.12.
ARO staff conducted site inspections on November 2, 2015 and November 5, 2015 and
observed your response to the non-compliance issues affecting Area 1 and Area 4.
Your written response, the annual inspection report, and the temporary stabilization efforts
have been reviewed and evaluated. We appreciate your response to the NOV. It is our
understanding that a stormwater management plan for the entire Asheville Airport CCP
structural fill project is currently under review and implementation of that plan will likely begin
State of North Carolina I Environmental Quality I Water Resources
2090 U.S. Hwy, 70, Swanneooa, North Carolina 28778
828-2964500

Harry Sfderis
February 25, 2016
Page 2 of 2
in June 2016. Please provide a copy or summary of the final repair plan when it becomes
available.
The North Carolina Department of Environmental Quality is committed to protecting North
Carolina's environment and natural resources. It strives to foster a collaborate stewardship
among the citizens, regulators and the business community with the goal of maintaining and
enhancing North Carolina's environment and natural resources for the benefit and enjoyment
of everyone living in and visiting our great state.
Your attention and cooperation is greatly appreciated. Should you have any questions
regarding this matter or other water quality issues or concerns, please contact Brett Laverty at
[phone] or [e-mail].
Sincerely,
G. Landon Davidson, P.G., Regional Supervisor
Water Quality Regional Operations, NCDEQ
Asheville Regional Office
cc: WQAsheville Files
MSC 1617— Central Files — Basement
WQ Enforcement/Non Discharge
Michael Reisman—Asheville Airport (via email)
John Toepfer— Duke Energy (via email)