Government Contract | Washington
North Mercer Island Pump Station

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Bid Information

Bid Alert No: 00002779070

Bid Title: North Mercer Island Pump Station

Agency Bid No. Title: Not Stated

Received Date: 10/13/2021

Close Date: 11/03/2021

Purchase Type: Not Stated

Delivery Point: King County, Washington

Delivery Date: Not Stated

Special Notices: Bidder Preregistration


Specifications include, but are not limited to: The upgrade at N. Mercer Pump Station is to accommodate the increased flowand pumping head that it will experience with the planned pipeline improvements. Three existing raw sewage pumps will be replaced with four dry-pit submersible pumps, and the wet well will be modified to improve hydraulic performance. The discharge piping will be replaced with a new header that will allow flows to be pumped to either of two new force mains. Each force main will be equipped with a surge tank, located in the pump station dry well, to control hydraulic transients. Similarly, Lift Station 11 will be modified to accommodate the higher head associated with planned pipeline improvements and will be converted from a wet well and dry well configuration to a wet well containing submersible pumps. The existing lift station force main will also be rehabilitated by a cured-in-place pipe (CIPP) method, and the force main will be extended with a new 10-inch diameter pipeline along 97th Avenue SE, to connect to the new King County Interceptor system.

Bid Related Documents

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Product Code: 91345

Agency Information

Issuing Agency: Walsh Construction Co.

State: Washington

Agency Type: State and Local




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