Home Page This Department
Link to Department of Executive Administration Home Page Link to Department of Executive Administration Home Page Link to Department of Executive Administration About Us Page Link to Department of Executive Administration Contact Us Page
Stewards of the City of Seattle's business and financial services Fred Podesta,  Director
Animal Shelter Business Licenses & Taxes Consumer Affairs Consultant Public Works Purchasing

Public Works Home
Current Public Works Solicitations
Job Order Contracting (JOC)
ADA Compliance
Approved Soil Suppliers
Subcontractor Pay Portal
Getting Paid
Labor Equity
Equal Benefits


Large Project Status
Large Project Status
Elliott Bay Seawall Project
First Hill Streetcar Project
Genesee CSO Reduction Project
North Transfer Station Project
Windermere CSO Reduction Project


Contact Us

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.

Project Photos

Below are links to some photos of the project site:

Project Status

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. 

  • 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

Bids have been received for the following bid packages:

  • Excavation
  • Shoring

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

  • Miguel Beltran – City of Seattle, City Contract Compliance Manager
  • E-mail: Beltran, Miguel
  • Phone: 206-684-4525

CDM WMBE Outreach Contact Information

  • Rene Finnie – Pacific Communications Consultants Inc., CDM Project Diversity Manager
  • Email:
  • Phone: 206-818-7577

This site is updated periodically. Please continue to check back for the latest news and information on this project.

Consultant Contracting | Public Works | Purchasing | Bidding Opportunities | Contact Us
FAS Home | About FAS | Business Licenses & Taxes | Seattle Animal Shelter