Barton CSO Control Project
Green stormwater infrastructure
Completed fall 2015
The Barton CSO Control Project construction phase is complete, and the construction hotline has been deactivated.
King County is responsible for regular maintenance of the roadside rain gardens year round. You can expect to see crews onsite at least monthly performing regular maintenance. Expect more frequent visits before and after large storms, and during the summer growing season.
Here is what crews will be doing:
• Monitoring plant health
• Removing weeds
• Monitoring drainage
• Removing debris and trash
• Clearing curb inlets and gutters
• Caring for the pipes and deep wells
• Gathering ongoing information on the performance of roadside rain gardens
To view the maintenance schedule and Operations and Maintenance (O&M) Manual, visit the facility operations page.
King County will share performance data once it is collected.
King County constructed roadside rain gardens, a type of green stormwater infrastructure, in the Sunrise Heights and Westwood neighborhoods in West Seattle. Located in the planter strip between the curb and sidewalk, these roadside rain gardens divert stormwater runoff away from the combined sewer system. When it rains, stormwater filters through the rain garden soil to a drain pipe, which takes the water to a deep well for slow infiltration underground. Keeping stormwater out of the sewer system will reduce CSOs of raw sewage and untreated stormwater into Puget Sound near the recently upgraded Barton Pump Station and Fauntleroy ferry dock.
Source: summer 2015 newsletter (PDF).