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SEPA Checklist (5 publications 2019-2020)


Title (link to summary)NumberDate (released or updated)
South State Street Manufactured Gas Plant Cleanup Action Plan and SEPA Determination Fact Sheet 20-09-162June 2020
Emerald Gateway Cleanup Site 19-09-146October 2019
Public Comment Period: Boeing Developmental Center Cleanup 19-04-013May 2019
Final Environmental Impact Statement Short-term modification of the total dissolved gas criteria in the Snake and Columbia Rivers 19-10-019March 2019
Draft Environmental Impact Statement Short-term modification of total dissolved gas criteria in the Snake and Columbia Rivers 19-10-013January 2019