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.
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Product Code: 91345
Issuing Agency: Walsh Construction Co.
Agency Type: State and Local