Rosters
Cascade Water Alliance maintains its Small Public Works Roster, Consultant Roster, and Vendor Roster in the MRSC Rosters online database. Businesses interested in working with Cascade projects using a roster contracting process must register at www.mrscrosters.org and select Cascade Water Alliance in the application.
Requests for Expressions of Interest
None at this time.
Requests for Qualifications
None at this time.
Requests for Proposals
Cascade Water Alliance (“Cascade”) is soliciting proposals for a multi-year contract for operations and maintenance services (the “Contract Services”) for Cascade’s White River-Lake Tapps Reservoir Project (the “Project”). Proposers must demonstrate experience and satisfactory performance with engagements of similar scope to the Contract Services, including with respect to the proposed Key Personnel.
This Request for Proposal (this “RFP”) is being issued to assure Cascade obtains the services of a qualified firm in the most effective and efficient manner.
Cascade intends to select one qualified firm (the “Company”) based on this RFP process to operate and maintain the Project’s infrastructure to meet regulatory and stakeholder requirements and provide preventive maintenance to ensure the Project remains in sound operating condition on a cost-effective and cooperative basis (the “Cascade Goals”). The Proposer ultimately selected pursuant to this RFP will be a full-service operations and maintenance contractor required to provide all Contract Services, including all required staffing.
About Cascade: Cascade is a municipal corporation organized under the authority of the Joint Municipal Utilities Services Act, Chapter 39.106 of the Revised Code of Washington to provide wholesale water supply to meet the current and future water supply needs of its Members.
Submittal Deadline: SOQs must be submitted to Cascade Water Alliance, per instructions in the RFP, no later than 5 PM (PST) on Friday, May 15, 2026.
Questions: All questions or requests for clarification must be made only to Henry Chen, Director of Engineering and Capital Projects, by email at hchen@cascadewater.org.
- Request for Proposals – White River-Lake Tapps Reservoir Project
- Addendum #1
- Addendum #2
- Addendum #3
Schedule B Documents
- Asset Overview Presentation dated January 21, 2022
- Flowline Facility Historical Plans
- White River Lake Tapps Profile Drawing
- Water Right Permits and Claim
- White River Management Agreement between Cascade Water Alliance and the Puyallup Tribe of Indians and the Muckleshoot Indian Tribe dated August 8, 2008
- Agreement Regarding Lake Tapps between Cascade Water Alliance and the Lake Tapps Community dated May 12, 2009
- Agreement Between the Department of the Army and Cascade Water Alliance for Operations On the White River At Buckley, Washington, dated March 2, 2018
- Emergency Action Plan (EAP) for the Lake Tapps Project, Pierce County, Washington, prepared by GeoEngineers, Inc. and Cascade Water Alliance, dated March 23, 2013 and updated October 26, 2023
- “Thompson’s Ditch Agreement,” between Laura Haugen and Puget Sound Traction, Light & Power Company dated July 22, 1919, Pierce County Recording Number 606744
- 1919 Thompson’s Ditch County Culvert Drawing
- “Bowman Creek Agreements” between Oravetz and Puget Sound Power & Light Company dated July 17, 1936, King County Recording Number 2919138, and October 18, 1936, Pierce County Recording Number 1209108
- Letter Agreement for Confirmation of Areas for Required Pre-Notification of Soil Excavation and Termination of Certain Environmental Obligations, between Cascade Water Alliance and Puget Sound Energy, dated May 18, 2023
- White River – Lake Tapps Reservoir Project Operations and Maintenance Manual dated February 2026
- Request for Expressions of Interest (RFEI) Cascade Water Alliance White River Lake Tapps Contract Operations and Maintenance dated September 2, 2025
Invitations to Bid
None at this time.
SEPA Notices
A Determination of Nonsignificance (DNS), dated October 23, 2026, is issued for or relocating the Bellevue Issaquah Pipeline (“BIP”) within Washington Department of Transportation (“WSDOT”) right-of-way. The project is located near Lewis Creek and SE Newport Way in the City of Issaquah, King County, Washington.
As the lead agency for this proposal, Cascade has determined that it does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.21C.030 (2)(c). This decision was made after review of a completed environmental checklist and other information on file with the lead agency. Links to these documents are below.
This DNS is issued under WAC 197-11-340(2); the lead agency will not act on this proposal for 14 days from the date of the DNS. Written comments must be postmarked or e-mailed on or before November 4 to:
Paula Anderson, Land Use Director
Cascade Water Alliance
11400 SE 8th ST, Suite 400
Bellevue, WA 98004
Phone: 425-453-0930
E-mail: contact@cascadewater.org
Links to the documents below: