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HomeMy WebLinkAboutNC0020184_NOV-2022-LV-0605 Correpsondence_20221013TwoRIvE RS i 1 I I. I FILS We are TRU to our Customers! October 12, 2022 Mr. Ori Tuvia Division of Water Quality, Mooresville Regional Office 610 East Center Avenue, Suite 301 Mooresville, NC 28115 RE: Notice of Violation Tracking UNOV-2022-LV-0605 NPDES Permit No. NC0020184 Long Creek WWTP Gaston County Dear Mr. Tuvia: Two Rivers Utilities received the above referenced Notice of Violation regarding exceedance of the Long Creek WWTP effluent weekly BOD limit for the week of July 9, 2022. Two Rivers Utilities takes this violation very seriously and is working diligently to determine the cause of the elevated BOD results so that appropriate preventative actions can be implemented going forward. As a part of this investigation, Two River Utilities has contracted with HDR Engineering to investigate the periodic episodes where Long Creek WWTP has experienced elevated levels of BOD at the effluent. Engineers with the firm are attempting to identify potential sources of the elevated BOD and make suggestions for additional testing or process changes to make going forward. This investigation by HDR Engineering into Long Creek WWTP's effluent BOD includes: • Onsite visit and inspection of treatment processes and equipment • Review of treatment plant influent and process data • Evaluation of industrial dischargers including chemicals used in their processes • Suggestions on additional analyses to perform or areas to investigate • A technical memorandum summarizing findings and recommendations Please advise if NCDEQ wishes to receive any additional information or future updates regarding this evaluation. Two Rivers Utilities regrets this instance of non-compliance and strives to meet all permit conditions and requirements. If additional information is needed, please contact me at 704-866-6726 or stephanies@cityofgastonia.com. Sincerely, Stephanie B. Scheringer Division Manager Wastewater Treatment cc: Andrew Pitner— Assistant Regional Supervisor, NCDEQ Mourice Brothers — Treatment Plant Supervisor/ORC — Long Creek WWTP Certified Mail: 7017 0530 0000 9533 2395