Windermere CSO Reduction Project WMBE Inclusion Page
Windermere Basin
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.
On December 8, 2011, CDM held a project open house. CDM thanks all those firms that were in attendance. Another project open house will be held in March or April 2012. The exact date, time, and location will be posted to this website in a future update.
Firms that are interested in this project are encouraged to attend the project open house. Attendance is not mandatory for bidding on any subcontracting packages. For more information regarding the upcoming open house, feel free to contact Simon Lee, Project Engineer at leesn@cdmsmith.com.
Please complete the Company Profile form found here 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 (CSO) 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.
Project Photos
Below are links to some photos of the project site:
Existing CSO Facility Site
Tank Cutaway at 30% Design
Sand Point Way Conveyance Alignment
Project Status
60% design was completed in early October 2011. The project team has conducted a design & constructability review of the documents. The design team is currently working on incorporating the design & constructability comments into the design.
Potential Subcontracting Opportunities
CDM’s subcontracting plan outlines the bid packages that will be bid. All bid packages will be publicly bid in accordance with RCW 39.10.380. The items below represent the preliminary scopes of work that will be subcontracted. These scopes do not represent the final bid packages that will be released for bid. Final bid packages will be published Spring 2012 with construction expected to begin early Summer 2012.
- Excavation
- Shoring
- Trucking
- Open Trench Piping
- Trenchless Piping
- Asphalt Paving
- Concrete Paving
- Pavement Striping
- Concrete Structures
- Curbs, Gutters & Sidewalks
- Mechanical
- Coatings
- Electrical & Illumination
- Instrumentation & Controls
- Landscaping
City WMBE Outreach Contact Information
CDM WMBE Outreach Contact Information
- Regina Glenn – Pacific Communications Consultants Inc., CDM Project Diversity Manager
- Email: rglenn@pccus.com
- Phone: (425) 455-5997
Updates to this site will be done monthly. Please continue to check back for the latest news and information on this project.
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