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HomeMy WebLinkAboutNC0026565_Report_20240806 Ramseur Where Family and Friends Meet TOWN OF RAMSEUR 724 Liberty Street, PO Box 545 Ramseur,North Carolina 27316 336-824-8530 COMMISSIONERS MAYOR TOWN CLERK/FINANCE OFFICER Tresa Hatchett,Mayor Pro Tern Hampton L.Spivey Carol Akers J.C.Parrish Diana Brower DEPUTY TOWN CLERK/FO Joy Kearns Debra Rhamy July 31,2024 RECEIVED NCDEQ/Division of Water Resources AUG 0 6 2024 NPDES Permitting 1617 Mail Service Center Raleigh,NC 27699-1617 NODE Q/DWR/NPDES RE: Copper Compliance Schedule NC0026565 Enclosed, please find a report summarizing the actions taken and outcomes to present to achieve compliance with the Copper limits at outfall 001 for the Town of Ramseur Wastewater Treatment Plant. The report is being provided in order to meet the NPDES permit requirement of Part I,A.(4.) Schedule of Compliance for Copper Limitations. The Town has already achieved compliance with the permit requirements. Should you have any questions or require additional information, please do not hesitate to contact me at the phone number or email listed below. Regards, Terry Lewallen Wastewater Operator in Responsible Charge t.lewallen@TownofRamseur.org Cell (336)267-1875 rtamseur Where Family and Friends Meet Town of Ramseur, NC0026565 Compliance with NPDES Permit Copper Limit July 2024 Permit Effective Date, May 1, 2022 1) Background / Requirement The Town of Ramseur received a renewal of NPDES Wastewater Plant discharge permit number NC0026565, effective May 1, 2022.The renewed permit contained new and changed requirements, including a Total Copper limit with a compliance schedule, Part 1,Section A (4), SCHEDULE OF COMPLAINCE FOR COPPER LIMITATIONS. This report is being provided to the North Carolina Division of Water Resources in response to item 3 of the compliance schedule. 2) Summary of Actions Taken to Achieve Compliance with the Copper Limit The Town of Ramseur was using an operating procedure for treatment of algae in the lagoon.The treatment used was cupric sulfate.The use of cupric sulfate lead to the effluent having high levels of copper.This operating procedure is no longer used at the plant.As a result,the effluent discharge has been compliant with the copper limit since at least the beginning of 2022,with an average of 0.014 mg/L, and a maximum of 0.024 mg/L. 3) Copper Data for NC0026565 See next pages for a table and a graph of copper data for NC0026565 beginning in 2022 to present. Ramseur NC0026565 Copper Limit Compliance Report Figure 1: Summary of Copper Data Beginning 2022 COPPER Influent Used in Effluent Used in Sample Date < mg/L Calculation < mg/L Calculation 3/15/2022 0.036 0.036 6/14/2022 0.035 0.035 < 0.01 0.005 7/26/2022 0.01 0.010 8/18/2022 0.006 0.006 9/15/2022 a _ 0.005 0.005 9/20/2022 010-1 0 104 0.005 0.005 10/20/2022 0.005 0.005 11/15/2022 0.005 0.005 12/15/2022 0.006 0.006 12/20/2022 0032 0 032 0.006 , 0.006 1/19/2023 0.009 1 0.009 2/19/2023 0.019 0.019 3/9/2023 0.042 0.042 3/14/2023 0 031 0 031 0.052 0.052 4/20/2023 _ 0.030 0.030 5/16/2023 0.007 0.007 6/13/2023 0.005 , 0.005 7/20/2023 0.007 0.007 8/17/2023 0.008 0.008 9/12/2023 0.007 0.007 9/21/2023 0.007 0.007 10/19/2023 0.008 0.008 11/16/2023 0.009 0.009 12/7/2023 0.022 0.022 12/12/2023 0.012 0.012 1/16/2024 0.011 0.011 2/15/2024 0.024 0.024 3/12/2024 - 0.011 0.011 4/16/2024 0.024 0.024 Column Averages=> 0.0505 _ 0.0138966 MAX _ 0.0240 1 average of duplicates 1 NIIN 0.0050 Page 2 of 3 Ramseur NC0026565 Copper Limit Compliance Report Figure 2: Chart, Copper Data Beginning 2022, Showing NPDES Permit Limits Town of Ramseur Effluent Copper Concentrations 0.25 0.2 i 0.15 - --0—Effluent mg/L E --- Monthly Limit,mg/L 0 1 —Daily Max,mg/L 0.05 "NNor--"-41k-e—....--40-...,--e. 9° re'+ N 8 LP F+ v Y' w ,. D nN E c ^ = D N N N N N N Lk) A N N N W W A Page 3 of 3