WI0400551_More Information (Requested)_20200713

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quality
July 13, 2020
Mr. James Wells, VP EHS Programs & Env. Sciences
Duke Energy Carolinas, LLC
526 South Church Street, Mail Code EC12J
Charlotte, NC 28202
Subject: Additional Information Request
UIC Permit Other Application No. W10400551
Duke Belews Steam Station Plant
Stokes County
Sent electronically and via U.S. Postal Service
Dear Mr. Wells:
The Division of Water Resources (DWR) is in receipt of your application to construct and
operate an Underground Injection Control (UIC) groundwater remediation system at the above
referenced site. After review by staff, we find that additional information is needed so that we
can continue the review and permit issuance process. Please address the following items within
30 days of receipt:
1. More detail is needed on how contaminates of interest (COIs) and unrelated contaminants
that may be present in surface water (e.g., PFAS/PFOAs) will be monitored (including
frequency) and reduced to prevent injection into the subsurface that may result in
exceedances of groundwater standards per 15A NCAC 02L .0202.
2. More detail is needed on how injection pressures will be managed to avoid creating
preferential pathways.
3. There appears to be a discrepancy in the total number of injections proposed to be
installed- 74 wells in narrative, and 91 on Table listing the wells. Please confirm the total
number of wells. If any corrections are needed, please provide corrected pages to replace
in Application.
4. Please provide well schematic for extraction wells_
5. Please provide an interim report discussing results of Phase 1 for review prior to
implementation of full-scale Phase 2 injection.
6. Variances are needed for the extraction wells and the infiltration wells as the wells will
be screened across three water bearing zones. Attached you will find variance request
forms to complete and submit electronically. For the attachments section of the request
forms, you may reference figures in the UIC permit application if applicable.
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11636 Mail Service Center I Raleigh, North Carolina 27699-1636
rom+cwawa
919.707.9000

Please note that failure to provide this additional information on or before the above
requested date may result in your application being returned as incomplete. If additional
time is necessary, the Application may be withdrawn to avoid being returned as incomplete.
Either the Applicant or the Applicant's consultant may request withdrawal by email message or
letter if this is desired.
If you have any questions regarding this request, please do not hesitate to contact me
MichaeI.Rogersnaa.ncdenr.gov or at [phone].
Thank you for your cooperation.
Sincerely,
Michael Rogers, PG (NC IFL)
UIC Program Manager
Ground Water Resources Section
Division of Water Resources
Department of Environmental Quality
cc: Refer to email for complete list of CC recipients