Sewer & Wastewater Treatment
Chief Operator, Victor “Rick” Chaput, Jr.
Phone: (802) 877-2931
Infiltration and Inflow in Sewer Collection Systems
Over many years, the City of Vergennes has experienced and has attempted to remediate overflows at the McDonough Drive pump station. A recent engineering study found excessive infiltration (groundwater entering sewer). An approximate 30% gap in flow quantities was observed between the temporary flow meters and the wastewater treatment facility (WWTF) flow meters. The gap suggests there may be a loss of wastewater from the collection system before reaching the WWTF.
The engineer recommended that the City implement a system evaluation survey (SSES) and investigation to identify infiltration and inflow in collection systems, which will ultimately lead to correction of the overflows and creating reserve capacity for future growth. SSES will be initiate in the summer 2020 and will conclude by fall 2020. SSES will be comprised of (1) smoke testing, (2) metering, and (3) videoing sewer lines.
Smoke Testing Information
SDS Smoke Fluid