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HomeMy WebLinkAboutNCS000546_2020 DMR_20210114� DUKE ENERGY January 13, 2021 NCDEQ, Mooresville Regional Office Attn: DEMLR Stormwater Program 610 East Center Ave., Suite 301 Mooresville, N.C. 28115 Subject: Duke Energy Carolinas, LLC NPDES Storm Water Discharge Monitoring Report for: Allen Steam Station — NCS000546 — Gaston County Allen Steam Station 25.3 Plant Allen Rd. Bebnont, NC 28012 704 829-2587 In accordance with Part III, E(2) of the above referenced NPDES Storm Water permit, the original and one copy of the monthly monitoring reports are attached. The samples collected are required monthly due to Tier Two or Tier Three Status. The period for sampling ended December 31, 2020. Samples were collected for the period at outfalls SW007, SW009, SW010, SW016, SW018 and SW020 on December 14, 2020. The laboratory analysis results were received on December 29, 2020. Duke Energy has performed the steps required by the Tier II and Tier III for these outfalls. There was no sample collected at outfalls SW001, SWO13-10 and SW013-13 for the period, due to No Qualifying Flow condition. Outfalls SW002, SW008 and SW015 were sampled on December 14, 2020 and the analysis results are included on this DMR. This DMR also contains the NO FLOW status of outfalls during the period of October 1, 2020 through December 31, 2020. Analytes sampled above the benchmark values for analytical monitoring are as follows. Outfall Parameter Result Benchmark SW007 Zinc 0.283 mg/L 0.126 mg/L W010 Copper 0.0104 mg/L 0.0I0 mg/L SW020 TSS 2200 mg/L 100 mg/L W020 Copper 0.288 mg/L 0.010 mg/L SW020 Zinc 0.395 mg/L 0.126 mg/L All values reported on the attached reports are dependent on the accuracy of approved analytical methods used to measure parameters. Please direct any correspondence or questions concerning the Allen Steam Station NPDES Storm Water Program to Elizabeth Glenn (980) 373-0530 or Randy Gantt (704) 829-2587. Yours truly, d� atl�� Rick R. 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