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SEPA (State Environmental Policy Act) (56 publications 1974-2020)


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
Summary of Draft Environmental Impact Statement for the Proposed Chehalis River Basin Flood Damage Reduction Project 20-06-002February 2020
Mt Baker Properties Cleanup Site 19-09-148October 2019
Emerald Gateway Cleanup Site 19-09-146October 2019
Quiet Cove Site 19-09-067September 2019
Sitio de Limpieza 8801 E Marginal Way S 19-09-145ESAugust 2019
8801 E Marginal Way S Cleanup Site 19-09-145August 2019
Sitio de Limpieza Bothell Service Center Simon & Son 19-09-143ESAugust 2019
Central Waterfront Agreed Order, Cleanup Action Plan, SEPA Fact Sheet 19-09-164July 2019
Bothell Service Center Simon & Son Cleanup Site 19-09-143July 2019
Texaco 211577 Monterey Cleanup Site Factsheet 19-09-141June 2019
Response to Comments Kimberly-Clark Worldwide March 13-April 1, 2019 19-09-063May 2019
Final Environmental Impact Statement Short-term modification of the total dissolved gas criteria in the Snake and Columbia Rivers 19-10-019March 2019
Scoping Meeting Notice for Perma-fix Northwest SEPA EIS 19-05-003March 2019
Report to the Legislature - Average Time to complete Final Environmental Impact Statements 18-06-012March 2019
Draft Environmental Impact Statement Short-term modification of total dissolved gas criteria in the Snake and Columbia Rivers 19-10-013January 2019
Final Environmental Impact Statement - Washington State's Changes to Water Quality Standards for Surface Waters of Washington State - WAC 173-201A 18-10-041January 2019
Shell Puget Sound Refinery Solid Waste Management Unit 55 Cleanup Public Notice 18-07-025November 2018
State Environmental Policy Act Environmental Checklist for the Switzler Reservoir Project 18-12-014August 2018
State Environmental Policy Act Co-Lead Memorandom of Agreement for the Switzler Reservoir Project 18-12-013August 2018
Determination of Significance, Switzler Reservoir Project 18-12-012August 2018
Final Programmatic EIS: Marine Spatial Plan for Washington’s Pacific Coast 17-06-028June 2018
Marine Spatial Plan for Washington’s Pacific Coast 17-06-027June 2018
Supplemental Draft Environmental Impact Statement (SDEIS) for Kachess Drought Relief Pumping Plant (KDRPP) and Keechelus Reservoir-to-Kachess Reservoir Conveyance (KKC) 17-12-021April 2018
Final Supplemental Environmental Impact Statement for the State of Washington Aquatic Plant and Algae Management 17-10-020August 2017
Chehalis Basin Strategy Final Programmatic Environmental Impact Statement (EIS) 17-06-019June 2017
Millennium Bulk Terminals – Longview Final Environmental Impact Statement (EIS) 17-06-013April 2017
Draft Marine Spatial Plan 17-06-007April 2017
Chehalis Basin Strategy Draft Programmatic Environmental Impact Statement (EIS) 17-06-017September 2016
Westway Expansion Project Final Environmental Impact Statement (EIS) 17-06-012September 2016
Rule Adoption Notice 16-06-018June 2016
Concise Explanatory Statement, Chapter 197-11 WAC, State Environmental Policy Act (SEPA) Rules 16-06-017May 2016
Rule Implementation Plan, State Environmental Policy Act (SEPA) Rules 16-06-016May 2016
Cost-Benefit Analysis and Least Burdensome Alternative Analysis 16-06-014May 2016
Combined Funding Program: Environmental Review Guidance 16-10-003March 2016
Wetlands Identification-Call Before you Fill Flyer (Central Region) 15-06-010March 2015
Wetlands Identification - Call Before you Fill Flyer (Eastern Region) 15-06-005March 2015
Colville Post & Poles Site 15-09-022February 2015
Public comment and event notice: Port Townsend Paper Corp 14-07-031November 2014
L & L Exxon: Interim Action Plan and SEPA DNS Available for Review and Comment 14-09-009October 2014
Public Comment Notice: RockTenn Notice of Construction and SEPA Determination of Non-significance 14-07-028October 2014
Final Environmental Impact Statement: Management of Zostera Japonica on Commercial Clam Beds in Willapa Bay, Washington 14-10-050March 2014
Public Comment Notice: Weyerhaeuser, Longview Notice of Construction Order SEPA Determination of Non-Significance 13-07-049December 2013
State Environmental Policy Act Mitigated Determination Of Nonsignificance for Kennewick General Hospital water right 13-12-006February 2013
Port of Tacoma Kaiser: Interim Cleanup Plans and SEPA Forms Available for Public Comment 13-09-112January 2013
Final Cost-Benefit and Least Burdensome Alternative Analyses Chapter 197-11 WAC 12-06-021December 2012
SEPA Rule Adoption Notice 12-06-020December 2012
SEPA Rule Implementation Plan 12-06-017December 2012
SEPA Rule - Concise Explanatory Statement 12-06-016December 2012
Preliminary Cost-Benefit and Least Burdensome Alternative Analyses, Chapter 197-11 WAC SEPA Rules 12-06-013November 2012
Rule Proposal Notice, State Environmental Protection Act (SEPA) 12-06-009October 2012
Addendum to the Final Supplemental Environmental Impact Statement for the Lake Roosevelt Incremental Storage Releases Program 09-12-012December 2009
Mitigated Determination of Non-Significance, Potholes Supplemental Feed Route Project Phase 2 09-12-020May 2009
Mitigated Determination of Non-Significance, Potholes Supplemental Feed Route Project Phase 1 09-12-019January 2008
Final Programmatic Environmental Impact Statement For The Columbia River Water Management Program 07-11-009February 2007
Efficiency Study of Toledo Sewage Lagoon. 74-e19March 1974