Kirkland Pump Station and sewer upgrade

Kirkland Pump Station, corner of 3rd Street and Park Lane

As part of its mission to protect public health and the environment, King County is responsible for conveying and treating wastewater collected by 34 cities and local sewer agencies, including the City of Kirkland.

The King County Wastewater Treatment Division proposes to upgrade the Kirkland Pump Station at the corner of Third Street and Park Lane in downtown Kirkland, to increase capacity and insure safe and reliable operations. The county also needs to increase capacity of the sewers that lead in and out of the pump station.

Need for project

King County has operated the Kirkland Pump Station for more than 40 years. The pump station needs to be upgraded to:

• Replace aging pump station equipment and sewer lines to ensure safe and reliable operations.
• Increase pumping capacity to accommodate growth from 6 million gallons per day (mgd) to a peak capacity of 9.4 mgd.
• Meet current design standards, including odor and noise control.

Background

The existing pump station was built in the late 1960s.

The pump station receives flows from downtown Kirkland and pumps it east to the main conveyance pipe which takes the wastewater to King County's South Treatment Plant in Renton.

Schedule

Sound Transit is planning to upgrade the Kirkland Transit Center located along both sides of 3rd Street between Kirkland Avenue and Central Way in Kirkland. King County will coordinate with Sound Transit to minimize impacts to the community from construction activities. For example, Sound Transit's contractor will construct both the new sewer and the Transit Center. Refer to the project overview for more information.

• 2007 - 2009, Pump station and sewer predesign, environmental review
• Fall 2009 - 2010, Sound Transit constructs Kirkland Transit Center and the sewer and water main pipeline in Third Street
• Fall 2010 - 2012, County constructs Kirkland Pump Station upgrades and force main sewer on Kirkland Avenue