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HomeMy WebLinkAboutWQCS00006_NOI_NOV2022DV0186_Response_#1_20220727ern i-a -'�-A N C Department of Environmental Quality Received GREENSBORONORTH CAROLIN� AUG 0 4 2022 Winston-Salem Regional Office July 27, 2022 Lon T. Snider, Assistant Regional Supervisor Water Quality Regional Operations 450 West Hanes Mill Road, Suite 300 Winston-Salem, North Carolina 27105 Dear Mr. Snider, This letter is in response to the Notice of Violation and Recommendation for Enforcement Letter dated July 11, 2022 received by the City of Greensboro. The address where the violation occurred and the amount spilled is shown below: 1. 1308 West Cornwallis Drive 2100 Gallons The sanitary sewer release at 1308 West Cornwallis Drive on May 26, 2022, was due to debris accumulation in the sanitary sewer at this address. A combination jet truck was dispatched to unstop the blockage and clean the line. Once the sanitary sewer overflow was stopped, we thoroughly cleaned all lines in the area to ensure we could perform a CCTV inspection of the line to see if further action would need to be taken to prevent future debris accumulation. Upon our inspection, we found a heavy presence of asphalt grindings and concrete. We determined that the contractor responsible for the recent paving in the area had not properly plated and sealed the manholes before grinding the roadbed. We believe these actions led to the sanitary sewer spill and the extended duration due to the difficulty of removing the material from the lines. The line is currently on a biannual PM schedule, and we will monitor the line to see if that cycle needs to be increased in the future. Remediation efforts include opening fire hydrants to flush the affected area. It is our duty to comply with the requirements of Collection System Permit Number WQCS00006 and G.S. 143-215.1(a)(1), and we will continue to address unforeseen circumstances as quickly as they occur. If any additional information is required, please do contact me. We appreciate your review and welcome your feedback. Sincerely yours, Robert Martin, Construction and Maintenance Supervisor PO BOX 3136 • GREENSBORO NC 27402-3136 • WWW.GREENSBORO-NC.GOV • 336-373-CITY (2489) 640 i GREENSBORO NORTH CAROLINA I I cc: Adam Conn, Operations Manager Patrick Smith, Utilities Maintenance Superintendent 4 a � , I I t PO BOX 3136 - GREENSBORO NC 27402-3136 • WWW.GREENSBORO-NC.GOV • 336-373-CITY (2489), `6ao