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HomeMy WebLinkAboutNCG030714_Cormetech Monitoring_20220218Sri � Lanette Plyler Director of Environmental, Health & Safety February 16, 2022 11707 Steele Creek Road Charlotte, North Carolina 28273 USA Phone 7044144621 Fax 704-827-8935 l.plyier@cormetech.com INC Department of Environmental Quality Mooresville Regional Office p of R. ®? N N'Q11 -OFM( 610 East Center Avenue, Suite 301 eq �Se R Mooresville, NC 28115 °s° a o�°° Attn: Zahid Khan; Regional Engineer; Energy, Mineral, and Land Resources Re: Notification of Two Consecutive Copper Benchmark Exceedances at Stormwater Outall 001 CORMETECH, Inc. Kings Mountain, NC Facility (Certificate of Coverage NCG030714) Dear Mr. Khan: Pursuant to Part E, Section E-6, Table 4, Row 2-ii of the North Carolina General Industrial Stormwater Permit NCG030000 with effective date July 1, 2021, CORMETECH, Inc. is submitting the following notification. Quarterly stormwater sampling conducted on 12/18/2021 (41, Quarter 2021) and on 1/9/2021 (1st Quarter 2022) has revealed copper results in excess of the permit benchmark of 0.010 mg/L. The table below provides details of the sample results. Outfall Sample Quarter Sample Date/Quarter Copper Result (Benchmark —0.010m /L 001 4th Quarter 2021 12/18/2021 0.013 001 151 Quarter 2022 1/9/2022 0.011 In response to these copper benchmark exceedances, CORMETECH has taken the following actions. • Conducted a Tier Two Stormwater Management Inspection in effort to identify and evaluate possible causes of the benchmark exceedances. • Implemented viable action plans to reduce concentrations of copper at the affected stormwater outfalls. • Implemented monthly monitoring for all permit parameters at Stormwater Ouffall 001 in addition to the previous monthly sampling already notified for Outfalls 004 & 006. Please advise if you have questions regarding this notification. I can be reached via phone at 980-722- 1811 or via email at I.olvler a0cormetech.com. Regards, Lanette Plyler Director of Environmental, Health & Safety CORMETECH, Inc.