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HomeMy WebLinkAboutWQ0020239_2021 Annual Report_20220314TOWN OF HERTFORD Collections System and Wastewater Treatment Plant Performance Report 2021 I. General Information: Facility Name: Town of Hertford Collections System Town of Hertford WWTP Responsible Entity: Town of Hertford Contact Person: Janice McKenzie Cole Interim Town Manager Applicable Permits: NPDES NC0021894 Reclaimed Water Permit WQ0021289 Collection System WQCS00209 Land Application of Residuals WQ0020239 A. Description of Process: The Town of Hertford wastewater collection system is gravity flowed to 11 lift stations then gravity flowed to 9 duplex pumping stations then through force mains to the Wastewater Treatment Plant. The town also treats the wastewater from the Town of Winfall. That wastewater flows by gravity to six pumping stations then through a force main to the treatment plant, The treatment facility is a 0.700 MGD oxidation ditch activated sludge process. The facility combines physical processes with biological processes to treat the wastewater. These include automatic screens to remove trash and grit and activated sludge oxidation ditches to remove biodegradable solids and reduce the ammonia concentration. The plant also has two secondary clarifiers to remove solids to be returned back into the plant or to be disposed of. There is an aerobic digester to treat the solids removed and a storage tank to hold them until they can be hauled to permitted fields. Then the water passes through tertiary disc filters which treat the effluent to a high quality. Chlorine is added to disinfect the water, and then sulfur dioxide is added to remove the chlorine. The treated water is then sent to the Perquimans River or to the town's spray field. The facility produces a high quality effluent to help protect the environment. II. Performance Summary: A. A. Collections System: The collections system had four reportable spills this year • Grubb Street, February • Edenton Road Street, February • Edenton Road Street, August • Highway 17, May B. Treatment Facility: The treatment facility had one Notice of Violation (NOV) for flow in excess of the permitted limit of 0.700 MOD (million gallons per day) and two Notice of Deficiency (NOD) for flow exceedance. ➢ In January an NOD was issued for flow in excess of permitted limit ➢ In February an NOD was issued for flow in excess of permitted limit ➢ In June an NOV was issued for flow in excess of permitted limit All of these incidents and violations were reported to the appropriate agencies in accordance with state regulations. III. Notification: Copies of this report are available in the following locations: ➢ Town Office ➢ Public Works Building D Town of Hertford Water Plant D Town of Hertford Wastewater Treatment Plant Availability of this report will be published in the Perquimans Weekly newspaper Certification: I certify under penalty of law that this report is complete and accurate to the best of my knowledge. I further certify that this report has been made available to the customers of the Town of Hertford and those users have been notified of its availability. Janice McKenzie Cole Interim Town Manager Town of Hertford March 4, 2022