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Title

State Environmental Policy Act Final Programmatic Environmental Impact Statement for Utility-Scale Onshore Wind Energy Facilities in Washington State

 
Publication number Date Published
25-06-003June 2025
VIEW NOW State Environmental Policy Act Final Programmatic Environmental Impact Statement for Utility-Scale Onshore Wind Energy Facilities in Washington State (Number of pages: 258) (Publication Size: 17MB)




Final PEIS Utility-Scale Onshore Wind Cover Letter
(2 pages) (125KB)

Final PEIS Utility-Scale Onshore Wind PEIS Summary
(13 pages) (5MB)

Final PEIS Utility-Scale Onshore Wind Appendix A Measures to Avoid, Reduce, and Mitigate Impacts
(46 pages) (636KB)

Final PEIS Utility-Scale Onshore Wind Appendix B Tribal Rights, Interests, and Resources
(37 pages) (1MB)

Final PEIS Utility-Scale Onshore Wind Appendix C Environmental Justice
(78 pages) (7MB)

Final PEIS Utility-Scale Onshore Wind Appendix D Earth Resources
(47 pages) (10MB)

Final PEIS Utility-Scale Onshore Wind Appendix E Air Quality and Greenhouse Gases
(35 pages) (1MB)

Final PEIS Utility-Scale Onshore Wind Appendix F Water Resources
(49 pages) (4MB)

Final PEIS Utility-Scale Onshore Wind Appendix G Biological Resources
(128 pages) (27MB)

Final PEIS Utility-Scale Onshore Wind Appendix H Energy and Natural Resources
(33 pages) (2MB)

Final PEIS Utility-Scale Onshore Wind Appendix I Environmental Health and Safety
(52 pages) (4MB)

Final PEIS Utility-Scale Onshore Wind Appendix J Noise and Vibration
(36 pages) (6MB)

Final PEIS Utility-Scale Onshore Wind Appendix K Land Use
(48 pages) (10MB)

Final PEIS Utility-Scale Onshore Wind Appendix L Aesthetics Visual Quality
(39 pages) (1MB)

Final PEIS Utility-Scale Onshore Wind Appendix M Recreation
(29 pages) (4MB)

Final PEIS Utility-Scale Onshore Wind Appendix N Historic and Cultural Resources
(47 pages) (3MB)

Final PEIS Utility-Scale Onshore Wind Appendix O Transportation
(42 pages) (4MB)

Final PEIS Utility-Scale Onshore Wind Appendix P Public Services and Utilities
(54 pages) (8MB)

Final PEIS Utility-Scale Onshore Wind Appendix Q Cumulative Impacts
(109 pages) (4MB)

Final PEIS Utility-Scale Onshore Wind Appendix R Scoping Report
(27 pages) (1MB)

Final PEIS Utility-Scale Onshore Wind Appendix S Response to Comments
(155 pages) (11MB)

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Author(s) Shorelands and Environmental Assistance Program
Description The Washington State Legislature directed Ecology to prepare a non-project environmental review of utility-scale onshore wind energy facilities in Washington by June 30, 2025. Revised Code of Washington (RCW) 43.21C.535 requires Ecology to assess and disclose the probable significant adverse environmental impacts and related mitigation measures for onshore wind energy facilities.
The Final PEIS has been prepared to satisfy the requirements of the Washington State Environmental Policy Act (SEPA). The purpose of the Final PEIS is to evaluate potential impacts and mitigation at a broad level.
The PEIS considers potential impacts from general types of onshore wind energy facilities; it is not site-specific or for a specific project. The types of utility-scale energy facilities evaluated in the PEIS would require additional, more detailed, project-level environmental review prior to permit decisions.
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The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

ADA Accessibility
The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188.
Visit Ecology’s website for more information.
Contact Clean Energy Coordination at 360-407-6600 or cleanenergy@ecy.wa.gov
Keywords State Environmental Policy Act (SEPA), clean energy, Programmatic Environmental Impact Statements, Department of Ecology, Wind
WEB PAGE Programmatic EIS
RELATED PUBLICATIONS Title:

State Environmental Policy Act Draft Programmatic Environmental Impact Statement for Utility-Scale Onshore Wind Energy Facilities in Washington State