King County Combined Sewer Overflow Hearings

King County Wastewater Division is hosting two information sessions which focus on projects to control combined sewer overflows.  The meetings are designed to answer questions to date, explain the project science and engineering.

Community members interested in learning more about King County’s proposals to control combined sewer overflows (CSOs) near recreational beaches on Puget Sound are invited to attend these upcoming technical information sessions.

The information sessions will focus on the science and engineering behind the county’s proposed alternatives to build CSO control facilities in West Seattle and North Beach neighborhoods.

Project managers and technical staff will answer questions the county has received to date from community members, including how flows were calculated, why parks are among the sites being considered for location of the new facilities, the feasibility of “green” infrastructure, how much storage capacity is needed to effectively control CSOs, and how a project might impact a neighborhood during and after construction.

People are welcome to come for the entire day, or attend individual sessions based on interest level. A detailed schedule will be posted on the project website at http://www.kingcounty.govCSOBeachProjects.

While the sessions will present a high level of technical detail, the presentations will be geared toward anyone with an interest in science and engineering. Online feedback forms will continue to be available on the project website for people unable to attend the sessions.

People are also invited to provide feedback by calling Monica Van der Vieren at 206-263-7301 or by e-mailing

A portal to information about the Wastewater Treatment Division, King County Department of Natural Resources and Parks is at

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