NC0003425_Termination of Special Order by Consent_20211008

oSTATEatb
ROY COOPER it, n
Governor e
ELIZABETH S.BISER ` * 4.
Secretary 411ouwvd►
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 18-005
Duke Energy Progress, LLC -Roxboro Plant
NPDES Permit NC0003425
Person County
Dear Ms. Bednarcik:
On August 15, 2018, Duke Energy Progress, LLC and the North Carolina Environmental
Management Commission entered into Special Order by Consent(SOC) S 18-005 to address
issues related to the elimination of seeps from coal ash basins at Duke Energy's Roxboro and
Mayo Plants. 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 reported completion of decanting at the Roxboro Plant's West Ash Basin occurred
on February 11, 2020. Per the terms of the SOC, Duke Energy submitted reports summarizing
and characterizing the status of the seeps at the site, and followed up with the September 2, 2020
submittal of a Seep Management Amendment to the proposed Groundwater Corrective Action
Plan(CAP)Update that had been previously submitted on December 31, 2019. On April 27,
2021,the Department of Environmental Quality issued its conditional approval of the CAP
Update,including its seep management provisions. This event activated the provision regarding
SOC termination in SOC S18-005 for the Roxboro Plant, and this letter affirms that the SOC has
been terminated for the Roxboro Plant. 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 Plan required in DEQ's conditional approval of the CAP Update.
Please be aware that while Duke Energy's obligations relating to the Roxboro Plant in the SOC
have ended, the SOC terms and conditions regarding the Mayo Plant remain active.
NortNorthh CarolinaSalisb DepartmenturyStreet1 of1617 Environmental
MailServiceCenter Raleigh.Quality Division of WaterNorthCarolina Resou27rces
512 699-1617
awa� /'' 919.707.9000

Ms. Jessica Bednarcik
S 18-005 Termination (Roxboro Only)
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
Robert Howard—Duke Energy
Lori Tollie—Duke Energy
Bob Sledge
Scott Vinson- RRO
Dr. A. Stanley Meiburg- EMC