City Purchasing and Contracting
Windermere Combined Sewer Overflow (CSO) Reduction Project WMBE Inclusion Page
CDM Constructors, Inc. (CDM) is the General Contractor/Construction Manager (GC/CM) for the Windermere CSO Reduction project. This project will be constructed for Seattle Public Utilities. CDM will be seeking sealed Subcontractor bids for various portions of the work which will be competitively bid with public bid openings in accordance with RCW 39.10.380.
An informational flyer on the project is available here.
If you are interested in this project please complete the Company Profile form and send it to CDM per the instructions on the form. Your company will be entered into our database and you will receive project updates by Email.
Project General Scope
The Windermere CSO Reduction project calls for construction of an underground storage tank to temporarily hold approximately 2.1 million gallons of combined sewer overflow during major rain events. This tank will limit overflows into Lake Washington. The tank will typically be emptied within 24 hours and its contents gradually transferred to the County’s system, so as not to overwhelm the treatment plant. The project also includes construction of a 30-inch gravity line to convey CSO flows to the tank and a 12-inch force main for pumping CSO out of the tank. Both conveyance lines will be in a shared trench.
Below are links to some photos of the project site:
CDM will begin mobilizing crews to the project in Fall 2012. Shoring and excavation work will begin and continue through January 2012. The improvements to Sportsfield Dr. will be concurrent with the shoring and excavation work and is scheduled to be complete in November 2012.
Potential Subcontracting Opportunities
CDM’s subcontracting plan outlines the bid packages that will be publicly bid in accordance with RCW 39.10.380. The items below represent the scopes of work that will be subcontracted. These scopes do not represent the final bid packages that will be released for bid.
Bids have been received for the following bid packages:
Upcoming bid packages including the scopes indicated above will be issued for public bid. The structural concrete and conveyance packages are two packages anticipated to bid out in October 2012. A call for bids will be advertised in the Daily Journal of Commerce prior to release of those packages.
City WMBE Outreach Contact Information
CDM WMBE Outreach Contact Information
This site is updated periodically. Please continue to check back for the latest news and information on this project.