Notice of field investigations will be provided to residents and impacted property owners/managers in the area.īeginning in late 2019, City’s consultant and its subcontractors will be performing additional private property inspections, conditional on receiving consent from private property owners to carry out testing on their property. Field investigations have been underway since 2018. The City and its subcontractors will be performing field investigations (drainage inspection building by building) in the project area to better understand and improve the performance of the existing sanitary sewer system. Wet Weather Flow Reduction Field Inspection See the diagram below for a visualization. Inflow can be reduced by connecting these sources to the storm sewer system instead of the sanitary sewer system. Inflow is clear stormwater flow entering the sanitary sewer system through inappropriate connections including sump pumps, roof drains, and surface drains. Infiltration is clear groundwater flow that enters the sanitary sewer system through cracks in sewer pipes and leaks in maintenance holes. The survey area that is served by the Scott Street Pumping Station is bounded by Spadina Avenue, Front Street, Parliament Street, and the Toronto Harbour. The City of Toronto is looking at ways to remove sources of clear water (groundwater and stormwater) that enter sanitary sewers, which can cause sewer capacity concerns and potential overflows into the lake.
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