Seattle in Progress

Seattle in Progress

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68 Cascade Ky

May 12, 2021: Newport Sewer Basin Capacity Improvements. The Newport Sewer Basin, located in the City of Bellevue, has experienced significant sewer pipeline surcharging that results from stormwater infiltration and inflow to the sewer system during high intensity and high-volume storm events. During large rain events, excess storm water can seep into the aging sewer system through small cracks. This rain infiltration can overwhelm the capacity of the system and lead to the risk of wastewater backups in low-lying homes. Bellevue crews currently manage this problem by using vacuum trucks to transport excess wastewater to the Newport Pump Station. Relying on this manual operation is not ideal.
The proposed project will improve both capacity and reliability of the current sewer system by constructing a new sewer "force" main, designed to move wastewater flows away from under-capacity areas, and upgrading pump stations with new pumps.

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