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Home My WebLink AboutNC0003417_Request for Concurrence_20160502 11 , DUKE Harry K. Sideris ° ENERGY PECEIVEGINCC�EOW Senior Vice President Environmental,Health&Safety MAY U 4 2016 526 S. Church Street Mail Code:EC3XF Water Quality Charlotte, NC 28202 Permitting Section (704)382-4303 May 2, 2016 Mr. Jeffrey Poupart, Section Chief NC Division of Water Resources 1617 Mail Service Center Raleigh, NC 27699-1617 Subject: H.F Lee Energy Complex Request for concurrence with pH adjustment Amendment to existing and pending NPDES permit renewal application NC0003417 Wayne County Dear Mr. Poupart, As discussed during the meeting between Division of Water Resources staff and Duke Energy (Duke) staff on April 27, 2016, this letter amends our existing NPDES application under which the plant currently operates and our pending NPDES permit application to disclose the potential use of several products for pH adjustment. An updated list of chemicals is attached. Please include this with the relevant permit files. Based on discussion, it is our understanding that with this modification to the existing permit application, no permit modification would be necessary and Duke is authorized to utilize these additives to assure compliance with NPDES permit limits for pH are maintained. We request that you confirm this understanding. If you have any questions regarding this letter, please contact Mr. Shannon Langley at (919) 546- 2439 or shannon.langley@duke-energy.com. I certifiv, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations. Sincerely, Harry K. Sideris SVP Environmental Health and Safety cc: David May - DWR Washington Regional office Steve Cahoon —NC 15 Mike Graham — HF Lee Shannon Langley— NCRH 15th floor H. F. Lee Energy Complex Duke Energy Progress, LLC.. NPDES Permit Number NC0003417 Attachment 5. Potential Discharges Not Covered By Analysis Estimated Quantity Chemical (used per year) Frequency Purpose NALCO Stabrex ST-70 800 gal As required Wet Surface Air Cooler hiocide NALCO 3D Trasar 3DT189 300 gal As required Wet Surface Air Cooler corrosion control NALCO BT 3000 150 lb As needed Boiler corrosion inhibitor Ammonium Hydroxide(19%) 1,200 gal As required Boiler condensate pH control NALCO Y302939.52 Sodium hypochlorite, 10-16% 34.000 gal As required Raw water hiocide Winter alum liquid 36.000 gal As required Raw water treatment Caustic. 25%tech grade 21.000 gal Continuous Raw water pH control Caustic, 12,000 gal Continuous Ash pond pH control Soda Ash 4,000 lb As required Ash pond pH control Rochem Fyrewash 280 gal As required Wayne County Combustion Turbine Site Turbine compressor cleaning NALC() PC-77 110 gal As required Wayne County Combustion Turbine Site RO System membrane low pH cleaner NALC()PC 98 400 gal As required Wayne County Combustion Turbine Site RO System membrane high pH cleaner NALCO PermaTreat PC-191 220 gal Continuous Wayne County Combustion Turbine Site RO System antiscalant NALCO 7408(sodium bisullite) 880 gal As needed Various water stream dechlorination NALCO PC 11 variable As required Biocide for Reverse osmosis system Conntect 6000 Compresser Cleaner 300 gal As needed Wayne County Combustion Turbine Site Turbine compressor cleaning Miscellaneous laboratory solutions and 2 gal As required Wayne County Combustion Turbine Site reagents RO water testing Nalco 7465 < 1 gallon As required Foam Control Nalco 7468 < I gallon As required Foam Control Sulfuric Acid As required pH adjustment of ash basin discharge Acetic Acid As required pH adjustment of ash basin discharge Citric Acid As rewuired pH adjustment of ash basin discharge Hydrochloric acid As required pH adjustment of ash basin discharge Alum As required pH adjustment of ash basin discharge CO, As required pH adjustment of ash basin discharge A5-1 May,2015