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Environmental documents

We’re committed to environmentally friendly practices. Find out how here.

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Environmental documents

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Looking for project environmental documents?

Environmental review documents for active projects can be found in our System Expansion documents library.

Looking for SEPA rules?

Download Sound Transit's SEPA rules.

Can't find what you're looking for?

Our website includes documents from 2011 and later. If you’re looking for older documents, our librarian can help!

library@soundtransit.org

Looking for multiple documents? You can obtain any public agency information through an official records request.

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