About this project
The King County Wastewater Treatment Division's Coal Creel Sewer Upgrade project is starting construction early this summer. This multi-year project will modernize wastewater infrastructure to support growing communities in Bellevue and Newcastle. After the pipe work is completed, the contractor will restore the Coal Creek Natural Area to protect the creek, trails, and remaining infrastructure. The rebuilt Red Cedar Trailhead will retain the same look and feel while enhancing accessibility for visitors of all abilities.
Coal Creek project awarded Salmon-Safe Certification
One of the nation’s leading eco-labels, Salmon-Safe, has awarded its first ever certification for a wastewater infrastructure project to the Coal Creek Sewer Upgrade project.
Salmon-Safe is leading the movement toward practices that protect water quality, maintain watershed health, and restore habitats. The project meets Salmon-Safe standards for construction stormwater management, stream flow management during construction, water quality protection, and invasive species management.
Check out the press release and video to !
’s Community Services team in person
Coal Creek project outreach team will be at two in-person events this month. Join us to learn more about the project, what to expect as construction approaches, and ask questions! We hope to see you there!
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When: Saturday, April 19, 11am-3pm
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Where: Bellevue Botanical Garden, 12001 Main St, Bellevue, WA 98005
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When: Wednesday, April 30, 10:30am-1:30pm
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Where: Bellevue College, C Courtyard, 3000 Landerholm Circle SE Bellevue WA, 98007
What’s the latest?
As the contractor finalizes schedules and upcoming work plans, visitors will continue seeing survey activities in the Coal Creek Natural Area in the next couple of months. The contractor is conducting surveys in work areas, while County teams monitor around existing pipes in the Natural Area.
People may see surveyors in the wetlands near a previous maintenance area. In 2020, crews stabilized the bank surrounding a maintenance hole structure, as shown in the picture below. These surveys help us respond to potential erosion caused by flooding, ensuring the bank remains secure until the new pipe is installed.
For more information
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