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Sound Transit and WSDOT Publish SEPA Addendum to East Link EIS

Apr 5, 2017 - Today at the close of business, the City of Mercer Island was notified that Sound Transit and Washington State Department of Transportation (WSDOT) have completed a State Environmental Policy Act (SEPA) Addendum for the East Link light rail extension, which will traverse Mercer Island along the center roadway of Interstate 90. 

The Addendum updates the Final Environmental Impact Statement (EIS) issued in July 2011 --and subsequent 2013 and 2016 addenda-- by providing additional analysis and information about the project. It describes changes in operation of I-90 high-occupancy vehicle (HOV) lanes and project refinements associated with transit integration on Mercer Island, evaluates the potential impacts of these changes, and identifies changes to mitigation measures.
The Addendum and supporting materials can be viewed and downloaded on Sound Transitís website, reviewed at local libraries and at Sound Transit (401 S. Jackson St., Seattle WA 98104). Hard copies of the Addendum, without the appendices, are free at the Sound Transit office; hard copies of the appendices are $15. Sound Transit also offers both the Addendum and all appendices for free on CD-Rom, at its office.

Learn more about light rail in general
Visit light rail/I-90 FAQ page


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