NC0004987_Other Correspondence_20211008

ROY COOPER 4 i'' --At
Governor
ELIZABETH S.BISER
Secretary *14law+00*
S.DANIEL SMITH NORTH CAROLINA
Director Environmental Quality
October 8, 2021
Ms. Jessica Bednarcik, Senior Vice President EHS
Duke Energy
526 S. Church Street
Mail Code EC3XP
Charlotte,NC 28202
Subject: Termination of Special Order by Consent
EMC SOC WQ S 17-009
Duke Energy Carolinas, LLC
Allen Steam Station, Marshall Steam Station&Rogers Energy Complex
NPDES Permits NC0004979,NC0004987 &NC0005088
Gaston, Catawba and Rutherford Counties
Dear Ms. Bednarcik:
On April 12,2018, Duke Energy Carolinas, LLC and the North Carolina Environmental
Management Commission entered into Special Order by Consent(SOC) S 17-009 to address
issues related to the elimination of seeps from coal ash basins at Duke Energy's Allen and
Marshall Steam Stations and the Rogers Energy Complex. Paragraph 2(b)(4) of the SOC states
that the SOC shall terminate on a facility-by-facility basis on the later of the following dates: 180
days following completion of decanting; or 30 days following the approval of an amended
groundwater Corrective Action Plan and/or Closure Plan as appropriate.
Duke Energy completed decanting at each of the subject facilities and,per the terms of the SOC,
submitted reports summarizing and characterizing the status of the seeps at the sites, and
followed up with submittals of Seep Management Amendments to the proposed Groundwater
Corrective Action Plan(CAP) Updates that had been previously submitted for each site. On July
8,2021,the Department of Environmental Quality issued its conditional approval of the CAP
Updates, including their seep management provisions. This event activated the provision
regarding SOC termination within SOC S 17-009 for each of the subject facilities, and this letter
affirms that the SOC has been terminated for each of the subject facilities. As an interim
measure, Duke Energy shall continue the monitoring and reporting of seeps established in the
SOC until approval of the Surface Water Assessment Plans required in DEQ's conditional
approvals of the CAP Updates.
D Q North Cnmf oml Quality I W Re
512 North SaarolilisburyaDepart Street
1 o16 17Envir Mail n Serviceenta Center I Raleigh,Division Northof Carolina ha sources 27699 1617
r ;Y\ /.' 919.707.9000

Ms. Jessica Bednarcik
S 17-009 Termination
p.2
If you have any questions regarding this letter, please contact Bob Sledge at(919) 707-3602, or
via email at [e-mail].
Sincerely,
Jeffrey O. Poupart, Chief
Water Quality Permitting Section
Division of Water Resources
ec: Richard Baker—Duke Energy
Shannon Langley—Duke Energy
Chris Hallman—Duke Energy
Michael Gantt—Duke Energy
Elizabeth Glenn—Duke Energy
Scott La Sala—Duke Energy
Steve Hodges—Duke Energy
Bob Sledge
Landon Davidson—ARO
Corey Basinger- MRO
Dr. A. Stanley Meiburg- EMC