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Seattle Department of Construction & Inspections
Nathan Torgelson, Director
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Environmentally Critical Areas Update
Reviewing and updating our environmentally critical areas code to ensure we follow current best practices and state rules.
Regulations for Environmentally Critical Areas
Public Hearing Documents
- Environmentally Critical Areas and SEPA Regulations - Proposed
- Environmentally Critical Areas Director's Report
City Council Briefing Documents
- Environmentally Critical Areas Briefing Memo (November 29, 2016)
- Environmentally Critical Areas Briefing Presentation (November 29, 2016)
Updated Director's Rules
- Great Blue Heron proposed Director's Rule
- State Environmental Policy Act (SEPA) Exemptions from Environmental Review Requirements When Establishing, Changing or Expanding a Use Proposed Director's Rule
Frequently Asked Questions and ECA Presentation
Best Available Science
- Best Available Science Review for Fish and Wildlife Habitat Conservation Areas (2013)
- Best Available Science Review for Wetlands (2014)
- Best Available Science Review for Geologic Hazard Areas (2014)
- Best Available Science for the 2006 ECA Amendment
- Best Available Science for the 2008 ECA Amendment
- Best Available Science - Supplemental for the 2008 ECA Amendment
- Best Available Science for the City of Sammamish Critical Areas regulations (2012)
- Department of Community, Trade and Economic Development’s Critical Areas Assistance Handbook: Protecting Critical Areas within the Framework of the Washington Growth Management Act (2007)
- Department of Ecology's Wetland Rating, Delineation, Buffer, Mitigation, and Protecting and Managing documents (2005-2016)
ECA Maps
(These maps are large files that may take a few minutes to open.)
- Slide Area Map
- Wetland and Riparian Corridor
- Great Blue Heron and Bald Eagle Management Areas
- Liquefaction Prone Area, Seismic Hazard Area and Volcanic Hazard Areas
- Peat Settlement Prone Areas
- Flood Prone Areas
