Bellevue Pump Station Upgrade and Force Main Installation

To protect public health and the environment and ensure safe and reliable operations, the Wastewater Treatment Division will upgrade the Bellevue Pump Station facilities.

The pump station is located at Southeast Sixth Street and 102nd Avenue Southeast. It pumps about 8 million gallons per day of wastewater from west Bellevue to the Sweyolocken Pump Station near the Mercer Slough. From there, the wastewater flows to King County’s South Treatment Plant in Renton.

Phase One. During phase one of the upgrade, a new 5,300-foot-long, 24-inch-diameter pipe was installed from the Bellevue Pump Station directly to the Eastside Interceptor, a large regional pipe near Interstate 405. The force main project was completed in March 2008.

Phase Two. Over the next two years, the above grade pump station will be demolished and replaced with a facility featuring more powerful pumps, a new generator building, stronger odor control equipment and updated architecture.

Upon completion, the refurbished pump station will be able to convey more than 13 million gallons of wastewater daily from west and central Bellevue to King County’s South Treatment Plant in Renton -- a 60 percent increase in capacity.

What to expect

• King County is committed to being a good neighbor. Sound walls will muffle noise coming from the site and fencing erected around the work site will protect public safety.
• The project team will keep the community regularly apprised of the work schedule via e-mail and written notifications, and will be available to answer questions 24-hours a day via the project hotline: 206-296-4081.
• The most disruptive work will occur in the first year when crews demolish existing structures on site and build a temporary pump station bypass.
• Increased noise, dust and activity typical of a construction site. Heavy equipment will be in use at the construction site on most days.
• Increased truck traffic on Southeast 6th Street and 102nd Avenue Southeast.
• Most work will occur weekdays between 7 a.m. - 5 p.m. Some work may be required at night when wastewater flows are lower.

Schedule

• January 2007 - Bids received on Force Main project
• Summer 2007 - Force Main construction begins
• March 2008 - Force Main construction complete
• September 2008 - The bid for the Bellevue Pump Station project has been awarded to Harbor Pacific Contractors, Inc. (external link)
• September 8, 2008 -- Notice to proceed given to contractor
• Fall 2010 -- Pump Station Upgrade complete

Your comments and ideas are welcome

King County is committed to being a good neighbor and welcomes your comments. We are working directly with the City of Bellevue, local jurisdictions and the community throughout the project to ensure that suggestions and concerns are addressed.

For more information

• Project library (project updates, technical reports and environmental documents)
• News Release, July 17, 2007 -- Bellevue sewer improvement project to impact traffic near central business district
• News Release, March 3, 2005 -- Community open house March 10 on plans for improving Bellevue Pump Station
• Traffic detours and Road Closures
• Contact the project information line at 206-296-4081 or doug.marsano@kingcounty.gov.

Department of Natural Resources and Parks
Wastewater Treatment Division
201 S. Jackson St.
Seattle, WA 98104-3855
Fax: 206-684-1278

Updated: Sept. 26, 2008

Related Information:

Conveyance System Improvement Program

Sweyolocken Pump Station Upgrade

Local Sewer Agencies

Regional Infiltration and Inflow Control Program

City of Bellevue, Utilities
(external link)