7906_Duke_DanRiver_ApprovalArea1DebrisRemoval_DIN26852_20161014

State of North Carolina | Environmental Quality | Waste Management
1646 Mail Service Center | 217 West Jones Street | Raleigh, 27699-1646
919 707 8200
PAT MCCRORY
Governor DONALD R. VAN DER VAART
Secretary
MICHAEL SCOTT
Director

October 14, 2016

Sent via email to [e-mail]

Andrew Shull
Duke Energy Carolinas, LLC
410 South Wilmington Street
NCRH 15
Raleigh, North Carolina 27601

Re: Approval of Debris Removal from Ash Stack #1
Duke Energy Carolinas – Dan River Steam Station
Proposed CCR Landfill
Permit No. 7906-INDUS-2016
Rockingham County
DIN 26852

Dear Mr. Shull:

The Division of Waste Management, Solid Waste Section (Section) has reviewed the request to
remove debris from Ash Stack #1 at the Dan River Steam Station submitted on October 13,
2017 (DIN 26851). The debris was discovered during the excavation of Ash Stack #1 and
consists of general household and construction debris. The debris was analyzed and parts of it
tested positive for asbestos, which will be safely handled and removed in coordination with the
North Carolina Division of Public Health. The material was also tested via TCLP methods for
various constituents. Lead was detected at a concentration of 5.7 mg/L, which is above the
allowable limit of 5 mg/L. The debris removal request proposed using a stabilizing agent,
Enviroblend, to help reduce the lead concentration. The material will be temporarily
stockpiled, mixed ex-situ with the Enviroblend agent and retested for lead via the TCLP method.
Upon achieving a lead concentration of 5 mg/L or less, the material will be shipped to a non-
hazardous waste landfill.

The Section approves this debris removal request. Once the project is complete, the Section
requests a notification of completeness and location of final disposal of both the asbestos and
lead contaminated material.

Approval of Debris Removal
Dan River Steam Station 7906-INDUS-2016 DIN 26852 October 14, 2016

If you have any questions, please do not hesitate to contact me via email
[e-mail] or phone [phone].

Sincerely,

Elizabeth S. Werner
Permitting Hydrogeologist
Solid Waste Section

Cc: Ed Sullivan, P.E. – Duke Energy Carolinas
Melonie Martin – Duke Energy Carolinas
Ellen Lorscheider – Section Chief, SWS
Ed Mussler, P.E. – Permitting Branch Head, SWS
Jason Watkins – Field Operations Branch Head, SWS
Larry Frost – Permitting Engineer, SWS
Shawn McKee – Environmental Senior Specialist, SWS
Shannon Aufman – Permitting Engineer, SWS