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3612_Duke_Allen_ConcurLetter_DIN26765_20160927 PAT MCCRORY Governor DONALD R. VAN DER VAART Secretary MICHAEL SCOTT Director State of North Carolina | Environmental Quality | Waste Management Asheville Regional Office | 2090 US Highway 70 | Swannanoa, North Carolina 28778 828 296 4500 T September 27, 2016 Mr. Sean DeNeale, Environmental Services Duke Energy Corporation 526 South Church Street, Mail Code EC13K Charlotte, North Carolina 28202 Subject: Compaction Modification Request, Concurrence Permit No. 3612-INDUS-2008, Allen Steam Station RAB Ash Landfill Gaston County, DIN 26765 Dear Mr. DeNeale: On September 22, 2016 the Division of Waste Management Solid Waste Section (Section) received Duke Energy’s request entitled; Retired Ash Basin (RAB) Ash Landfill Compaction Modification Request, Permit No.: 3612- INDUS, Allen Steam Station, Gaston County, Belmont, North Carolina 28012. Prepared by Duke Energy. September 2016. DIN 26763. In the letter Duke Energy requested revising the approved Operations Plan to change the minimum compaction requirement from 95 percent of Standard Proctor (ASTM D 698) maximum dry density to 90 percent for the intermediate cover compaction specification on exterior slopes at Allen Marshall Steam Station’s industrial landfill. The Section concurs with Duke Energy’s request and requests that the next time the permit for the Allen Steam Station is either amended or modified that the change be incorporated in the Operations Plan. Should you have any questions regarding this matter you may contact me at (828) 296-4704 or at larry.frost@ncdenr.gov. Sincerely, Larry Frost, Engineering Project Manager Permitting Branch, Solid Waste Section Division of Waste Management, NCDEQ ec: Shawn McKee – SWS/RCO Elizabeth Werner – SWS/RCO