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HomeMy WebLinkAboutWQCS00007_Response to Notice - NOV-2024-DV-0361_20240919DONALD L. PORTER, COMMISSIONER PUBLIC WORKS COMMISSION 955 OLD SS ae CHRISTOPHER DAVIS., COMMISSIONER RONNA GARRETT, COMMISSIONER OF THE CITY OF FAYETTEVILLE FAYETTEVILLE, NORTH CAROLINA 28302 1089 RICHARD KING, COMMISSIONER TELEPHONE (910) 483-1401 TIMOTHY L. BRYANT, CEO/GENERAL MANAGER WWW.FAYPWC.COM ELECTRIC & WATER UTILITIES September 19, 2024 Mr. Trent Allen, Regional Supervisor NC Division of Water Resources 225 Green Street, Suite 714 Fayetteville, NC 28302 Subject: Notice of Violation; NOV-2024-DV-0361 7/20/24 4479 Jockey Whip Lane; Incident 202401183; 97,100 gallons 7/20/24 4146 Fescue Court; Incident 202401186; 377,400 gallons Dear Mr. Allen: PWC hereby acknowledges receipt of the NOV regarding the sewer overflows at 4479 Jockey Whip Lane and 4146 Fescue Court, which both occurred on July 20, 2024. As stated in the reports dated July 21, 2024, and July 22, 2024, the spills at 4146 Fescue Court and 4479 Jockey Whip Lane respectively, were caused by a third party, utility contractor who was installing new 24” gravity sewer pipe. The contractor was installing the new sewer pipe immediately adjacent to Lake Upchurch. The water level in Lake Upchurch rose after a rain event and the lake water inundated the excavation where the contractor had stopped their installation on the previous Friday afternoon. The lake water was able to displace the 24” cap the contractor had placed over the end of the last joint of pipe they had installed and began to enter the collection system through the newly installed pipe. The influx of lake water overwhelmed the collection system and resulted in surcharging of the sewer system. Wastewater was able to escape from the collection system at two locations, a manhole on Jockey Whip Lane and a manhole on Fescue Court. PWC maintenance staff responded immediately after becoming aware of the overflow and began searching for the source of the inflow. Crews also began pumping and hauling wastewater with combination vacuum/jetter trucks to minimize the amount of wastewater escaping from the collection system. Upon locating the source of the inflow PWC staff immediately installed an inflatable plug at the manhole immediately downstream of the source of the flow and that ended the spill incident. The utility contractor responded to the site as well and constructed an earthen berm around the excavation to prevent any further lake water from entering their excavation. There was not any cleanup necessary since the wastewater flow was so diluted with fresh water from the lake. Sampling was conducted in the area of the overflows and results were forwarded to the DWR-FRO. PWC and the utility contractor met to discuss the importance of protecting any open excavations and extensions of the collection system to ensure that this type of event would not BUILDING COMMUNITY CONNECTIONS SINCE 1905 AN EQUAL EMPLOYMENT OPPORTUNITY / AFFIRMATIVE ACTION EMPLOYER reoccur. The contractor installed inflatable plugs and constructed earthen berms to protect their excavations when they resumed work. A Notification of Discharge of Untreated Sewage and a Paid Public Notice were issued and copies forwarded to the DWR-FRO. As a condition of PWC’s permit for operation and maintenance of the subject wastewater collection system, it is required that a minimum of 10% (120 miles) of the collection system be cleaned yearly. In the last three completed fiscal years (FY22-FY24) PWC has cleaned an average of 23% (276 miles) of the sewer system per year. While not a requirement of the permit, PWC has also performed CCTV inspections on an average of 6.5% (78 miles) of the system per year evaluating the condition of the mains. PWC maintains a proactive approach in operating and maintaining the sewer system to avoid as many sanitary sewer overflows as possible. Feel free to call me at 910-223-4718 if you need any additional information. Very truly yours, PUBLIC WORKS COMMISSION Chris Rainey Water Resources Operations Manager c: Mick Noland Rhonda Locklear Tim Ramsey Deborah Gore, PERCS Unit