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The King County Solid Waste Division contracts with renewable energy company INGENCO external link – doing business as Bio Energy (Washington) LLC, (BEW) external link – to generate renewable energy from landfill gas produced by decomposing organic material at the Cedar Hills Regional Landfill.

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infographic of landfill gas-to-energy at Cedar Hills


Bio Energy Washington
If you have any questions or comments about BEW’s landfill gas processing facility or would like to schedule a facility tour, call the BEW comment line at 425-392-3918 or visit the BEW website external link .

King County Solid Waste Division
If you have questions or comments about the operation of the Cedar Hills Regional Landfill, or would like a tour of the landfill, call 206-477-4466, Monday through Friday, 8:30 a.m. to 4:30 p.m., or use our online comment form.

King County Solid Waste Division mission: Waste Prevention, Resource Recovery, Waste Disposal

Contact Us

 Call: 206-477-4466

TTY Relay: 711