NC0024406_Operating Condition Clarification_20140828

North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
August 28, 2014
CERTIFIED MAIL 70I3 2630,000189981581
RETURN RECEIPT REQUESTED
Mark McIntire
Duke Energy
410 S. Wilmington Street
Raleigh, NC 27601
Subject: Duke Energy Notice of Operating Condition Clarification
Allen Steam Station NCO004979 Gaston County
Duck Steam Station NC0004774 Rowan County
Marshall Steam Station NC0004987 Catawba County
Lee Steam Electric Plant NCO003417 Wayne County
Weatherspoon Steam Electric Plant NC0005363 Robeson County
Mayo Steam Electric Power Plant NCO038377 Person County
Roxboro Steam Electric Power Plant NC0003425 Person County
Riverbend Steam Station NC0004961 Gaston County
Asheville Stearn Station NC000396 Buncombe County
Belc%v$ Creck NCO024406 Stokes County,
L.V. Sutton Electric Plant NC0001422 New Hanover County
Cape, Fear Steam Electric NCO003433 Generating Plant Chatham County
Dan River. Combined Cycle Plant NC0003468 Rockingham County
Cliffside Steam Station NCO005088 Gaston County
Dear Mr. McIntire:
This letter is to clarify operating conditions for NPDES Permits issued to the above listed facilities. The
Permittee is authorized by the existing NPDES wastewater permits to decant all the wastewater in the ash
pond above the ash level provided the supernatant is directed through the same discharge point and
monitored in accordance with the NPDES permit requirements,
The Permittee is prohibited from removing wastewater by dredging the ash, excavating the trenches, or
any other mechanical movement of the ash. Duke Energy shall submit the chemical characterization of
the interstitial ash water from the ash basin and predicted volume of wastewater that will be generated by
mechanical dewatering.
If you have any questions about this letter, please contact me at [phone], or via e-mail at
jeffpouoart a.nedenr.sov.
Sincerely,
Jeff Poupart
Water Quality Permitting Section Chief
cc: EPA Region 1V, Mark Nulher
Central Files
DWR Regional Offices
1611 Mall Service Center, Raleigh, North Carmina 27699-1611
Phone. [phone] Internet• www neviater,org
An Equal Opwwnily 1. A�.rma�ve AWA Employer — Made in pwl tyrecycW paper