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Home My WebLink AboutNC0024406_Annual Report_20180416 efiN DUKE Belews Creek Steam Station ENERGY® Duke Energy Carolinas 3194 Pine Hall Road py \AIR Creek,NC 27609 RECE �f DIDENRID!!VyR APR B® 2®1a April 16, 2018 Water geSOSection Permitting Sergei Chernikov, PhD State of North Carolina Department of Environmental Quality Division of Water Resources Complex NPDES Permitting Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Subject: Duke Energy Carolinas, LLC Belews Creek Steam Station - #NC0024406 Bromide Reduction Evaluation Semi —Annual Report Dear Dr. Chernikov: As required by Condition A. (14) of the subject NPDES permit attached are three copies of the Semi-annual status report summarizing Duke Energy's efforts to reduce bromide discharge and potential subsequent Total Trihalomethane (TTHM) formation in downstream municipal water treatment systems. Should you have questions regarding this report, please contact Joyce Dishmon at 336-623- 0238 or Joyce Dishmon@duke-energy.com. Yours t/, Reginald D Anderson General Manager Ill, Regulated Stations Belews Creek Steam Station Power Generating Carolinas East Attachment Belews Creek Steam Station Bromide Reduction Evaluation NPDES Permit-NC0024406 Semi-Annual Progress Report April 2017 Pursuant to Condition A.(14) Bromide Reduction Evaluation of the NPDES Permit— NC0024406. Duke Energy submits this semi-annual progress report. This condition requires Duke Energy to investigate technical solutions to reduce bromide in discharges from Outfall 003 and to work with downstream public water supply systems to find solutions to any total trihalomethane (TTHM) issues present within their drinking water distribution systems. • Duke Energy has worked cooperatively with the Town of Madison and City of Eden to address the TTHM issues. Upgrades or necessary maintenance to their respective drinking water systems have eliminated or lessened any halogen/TTHM impacts • Bromide itself is not a health concern in surface waters. There is no water quality standard for bromide and no NPDES permit limit. • In addition to the towns of Eden and Madison, and pursuant to the 2015 Dan River Plea Agreement, Duke Energy notified the towns of Mayodan, NC, Danville, VA, South Boston, VA, Clarksville, VA, and the Kerr Regional Water Treatment Plant in NC of potential impacts from bromide in their source waters. A claims process was initiated by which these municipalities could file a claim for damages incurred from the discharge of bromide from the Belews Creek Station. To date, none of these municipalities or water systems have filed a claim. • Belews Creek Station is currently planning for 50% natural gas co-fire capabilities by 2019 and 2020 for both units 1 and 2. This operational modification could have the added benefit of lessening the potential for bromide discharges from Outfall 003. Belews Creek Steam Station Bromide Reduction Evaluation NPDES Permit-NC0024406 Semi-Annual Progress Report April 2017 Pursuant to Condition A.(14) Bromide Reduction Evaluation of the NPDES Permit— NC0024406. Duke Energy submits this semi-annual progress report. This condition requires Duke Energy to investigate technical solutions to reduce bromide in discharges from Outfall 003 and to work with downstream public water supply systems to find solutions to any total trihalomethane (TTHM) issues present within their drinking water distribution systems. • Duke Energy has worked cooperatively with the Town of Madison and City of Eden to address the TTHM issues. Upgrades or necessary maintenance to their respective drinking water systems have eliminated or lessened any halogen/TTHM impacts • Bromide itself is not a health concern in surface waters. There is no water quality standard for bromide and no NPDES permit limit. • In addition to the towns of Eden and Madison, and pursuant to the 2015 Dan River Plea Agreement, Duke Energy notified the towns of Mayodan, NC, Danville, VA, South Boston, VA, Clarksville, VA, and the Kerr Regional Water Treatment Plant in NC of potential impacts from bromide in their source waters. A claims process was initiated by which these municipalities could file a claim for damages incurred from the discharge of bromide from the Belews Creek Station. To date, none of these municipalities or water systems have filed a claim. • Belews Creek Station is currently planning for 50% natural gas co-fire capabilities by 2019 and 2020 for both units 1 and 2. This operational modification could have the added benefit of lessening the potential for bromide discharges from Outfall 003. f Belews Creek Steam Station Bromide Reduction Evaluation NPDES Permit-NC0024406 Semi-Annual Progress Report April 2017 Pursuant to Condition A.(14) Bromide Reduction Evaluation of the NPDES Permit— NC0024406. Duke Energy submits this semi-annual progress report. This condition requires Duke Energy to investigate technical solutions to reduce bromide in discharges from Outfall 003 and to work with downstream public water supply systems to find solutions to any total trihalomethane (TTHM) issues present within their drinking water distribution systems. • Duke Energy has worked cooperatively with the Town of Madison and City of Eden to address the TTHM issues. Upgrades or necessary maintenance to their respective drinking water systems have eliminated or lessened any halogen/TTHM impacts • Bromide itself is not a health concern in surface waters. There is no water quality standard for bromide and no NPDES permit limit. • In addition to the towns of Eden and Madison, and pursuant to the 2015 Dan River Plea Agreement, Duke Energy notified the towns of Mayodan, NC, Danville, VA, South Boston, VA, Clarksville, VA, and the Kerr Regional Water Treatment Plant in NC of potential impacts from bromide in their source waters. A claims process was initiated by which these municipalities could file a claim for damages incurred from the discharge of bromide from the Belews Creek Station. To date, none of these municipalities or water systems have filed a claim • Belews Creek Station is currently planning for 50% natural gas co-fire capabilities by 2019 and 2020 for both units 1 and 2. This operational modification could have the added benefit of lessening the potential for bromide discharges from Outfall 003.