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Home My WebLink AboutNC0024406_Annual Report_20161031October 25, 2016 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: Belews Creek Steam Station Duke Energy Carolinas 3194 Pine Hall Road Walnut Creek, NC 27609 RECEIVEDIMCDEOIDWR OCT 3 12016 vyatev Quality Permiifit4r:C� FJt'- rt 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 Joy_ce.Dishmon@duke-energy.com. You Reginald D. Anderson General Manager III, Regulated Stations Belews Creek Steam Station Power Generating Carolinas East Attachments Belews Creek Steam Station Bromide Reduction Evaluation NPDES Permit-NC0024406 Semi -Annual Progress Report October 2016 Pursuant to Condition A.(14) Bromide Reduction Evaluation of the NPDES Permit — NC0024406. Duke Energy submits this semi-annual progress report. This report is required to summarize on-going investigations focused on minimizing bromide discharge at Outfall 003 as well as efforts aimed at reducing the formation of total trihalomethanes (TTHM) at downstream water treatment plants. • Duke Energy has worked cooperatively with DWR and the Town of Madison and City of Eden to address the bromide/TTHM issues since being advised of the municipality's issues with TTHM formation. • Bromide itself is not a health concern in surface waters. There is no water quality standard for bromide and no NPDES permit limit. • Duke Energy has provided direct technical expertise and financial assistance to Madison and Eden to help address their respective TTHM issues. Town of Madison • No updated information new to report since the last submittal. City of Eden • City of Eden is continuing work on its chloramines conversion project. The project startup has been delayed due to chemical feed control issues. Belews Creek Steam Station • Duke Energy and the University of North Carolina at Charlotte (UNC -C), Civil and Engineering Dept., are currently planning the next phase in the halide study. This phase, tentatively scheduled of 1Q 2017, will test UNC -C's previous lab work on the field demonstration scale. The goal is to produce test beds of fixated coal combustion byproduct, material and FGD wastewater to monitor for halide separation. An engineering firm will be contracted to assist with the study. Belews Creek Steam Station Bromide Reduction Evaluation NPDES Permit-NC0024406 Semi -Annual Progress Report October 2016 Pursuant to Condition A.(14) Bromide Reduction Evaluation of the NPDES Permit — NC0024406. Duke Energy submits this semi-annual progress report. This report is required to summarize on-going investigations focused on minimizing bromide discharge at Outfall 003 as well as efforts aimed at reducing the formation of total trihalomethanes (TTHM) at downstream water treatment plants. • Duke Energy has worked cooperatively with DWR and the Town of Madison and City of Eden to address the bromide/TTHM issues since being advised of the municipality's issues with TTHM formation. • Bromide itself is not a health concern in surface waters. There is no water quality standard for bromide and no NPDES permit limit. • Duke Energy has provided direct technical expertise and financial assistance to Madison and Eden to help address their respective TTHM issues. Town of Madison • No updated information new to report since the last submittal. City of Eden • City of Eden is continuing work on its chloramines conversion project. The project startup has been delayed due to chemical feed control issues. Belews Creek Steam Station • Duke Energy and the University of North Carolina at Charlotte (UNC -C), Civil and Engineering Dept., are currently planning the next phase in the halide study. This phase, tentatively scheduled of 1Q 2017, will test UNC -C's previous lab work on the field demonstration scale. The goal is to produce test beds of fixated coal combustion byproduct material and FGD wastewater to monitor for halide separation. An engineering firm will be contracted to assist with the study. Belews Creek Steam Station Bromide Reduction Evaluation NPDES Permit-NC0024406 Semi -Annual Progress Report October 2016 Pursuant to Condition A.(14) Bromide Reduction Evaluation of the NPDES Permit — NC0024406. Duke Energy submits this semi-annual progress report. This report is required to summarize on-going investigations focused on minimizing bromide discharge at Outfall 003 as well as efforts aimed at reducing the formation of total trihalomethanes (TTHM) at downstream water treatment plants. • Duke Energy has worked cooperatively with DWR and the Town of Madison and City of Eden to address the bromide/TTHM issues since being advised of the municipality's issues with TTHM formation. • Bromide itself is not a health concern in surface waters. There is no water quality standard for bromide and no NPDES permit limit. • Duke Energy has provided direct technical expertise and financial assistance to Madison and Eden to help address their respective TTHM issues. Town of Madison • No updated information new to report since the last submittal. City of Eden • City of Eden is continuing work on its chloramines conversion project. The project startup has been delayed due to chemical feed control issues. Belews Creek Steam Station • Duke Energy and the University of North Carolina at Charlotte (UNC -C), Civil and Engineering Dept., are currently planning the next phase in the halide study. This phase, tentatively scheduled of 1Q 2017, will test UNC -C's previous lab work on the field demonstration scale. The goal is to produce test beds of fixated coal combustion byproduct material and FGD wastewater to monitor for halide separation. An engineering firm will be contracted to assist with the study.