South Magnolia CSO Control Project
November 8, 2013 Update -- Construction contract is awarded
King County awarded the South Magnolia CSO Control Project storage facility construction contract to Stellar J Corporation of Woodland, WA. Stellar J teams are working on two other King County Wastewater Treatment Division projects, the upgrade of the County’s Interbay Pump Station and Kirkland Pump Station. Stellar J has also been awarded the North Beach CSO Control Project contract.
Save the date! Meet the contractor at an open house on January 30, 2014
Join us to meet Stellar J representatives and King County’s construction management team and learn about construction activities.
Open house- drop in anytime between 6-8:00 p.m.!
January 30, 2014
Seattle Yacht Club Building
Elliott Bay Marina
2601 West Marina Place
Seattle, WA 98199
Take a minute to tell us how we’re doing and how we can help you during construction
Help us to help you!
The Magnolia community will be receiving a survey in the mail. The information you provide to King County will help us understand what we’re doing well and also what we can do better communicating with you in the future. You will also help us understand your needs during construction, whether you are a project neighbor, park user, commuter, or just someone interested in the South Magnolia CSO Control Project. You can take the survey online from now until December 16.
South Magnolia basin and project location.
South Magnolia CSO basin project area
How will the new CSO facility work? View animation.
Terminal 91 West Yard / Smith Cove Park today
King County is building an underground storage tank in the Port of Seattle’s Terminal 91 West Yard south of the Magnolia Bridge. This facility will store peak combined sewer flows so that CSOs are limited to no more than one per year on a long-term average.
Why does King County need to do this project?
In 2008, King County reported that the South Magnolia combined sewer overflow (CSO) facility has 19 overflows per year on average that discharge a total of 31 million gallons of untreated wastewater and stormwater into Puget Sound off of South Magnolia. King County is working to meet current regulations set by the Washington Department of Ecology that require no more than one untreated discharge per year on a long term average.
||January 26, 2013
|Construction procurement process
|Pre-construction community meetings
||2013 - 2015
View meeting calendar for upcoming public meetings, and South Magnolia CSO Control Project Timeline (PDF), updated May 2013.