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Project documents
Stay informed on the latest project frequently asked questions, fact sheets and reports.
Please see the Public engagement page for a list of community meetings and meeting materials (agendas, presentations, summaries, etc.).
Project updates are posted on the home page.
Translated documents and content in 中文 (Chinese, simple), 正體字 (Chinese, traditional), ;ខ្មែរ (Khmer), Español (Spanish) and Tiếng Việt (Vietnamese) are posted on the Translations page.
FAQs
- Frequently asked questions (October 2025)
- Proposed solution frequently asked questions (August 2025)
- Planning phase frequently asked questions October 2024)
Fact sheets
- Proposed facilities fact sheet (May 2025)
- King County’s plan for a cleaner Duwamish River (May 2025)
- King County is starting work to address combined sewer overflows in SODO (January 2024)
Reports
- SODO Preliminary Design Survey Summary (October 2025)
- Planning Phase Community Engagement Summary (October 2025)
- Summer 2024 Community Engagement Report Summary (October 2024)