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Project documents
Find a variety of project documents such as environmental checklists and translated materials.
We have received reports of people getting unsolicited phone calls from the Coal Creek Project Hotline 206-492-6499. These calls were not made by King County staff. We are currently investigating these reports.
If you receive a call from this number, please do not answer or call it back. Please block the number. We are investigating this technical issue. We apologize for the inconvenience.
Please also visit the Public engagement page to view materials and information shared at meetings; project updates are posted on the home page.
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Enviromental documents
Coal Creek Trunk Upgrade Project
- DNS and Environmental Checklist, issued January 19, 2021
Coal Creek Trunk Maintenance Hole 25B Protection Project
- DNS and Environmental Checklist, issued June 11, 2020