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The Draft Transmission Programmatic Environmental Impact Statement (EIS) was released on March 31, 2025. To review the document visit the Transmission PEIS webpage. 
There has been an extension to comment on the Draft PEIS until May 15th. 

The Carriger Solar Draft Order #899 is available for comment April 29th through May 1st 11:59 pm. You can see the Draft Order under the "Orders" header towards the bottom of the Carriger Solar webpage.  

There are two Special Meetings for the Carriger Solar project set for May 5th and May 6th. For more information, visit the Carriger Solar webpage. 

If you would like to submit a comment for either of the above visit our comment database: https://comments.efsec.wa.gov

Horse Heaven Wind Farm / SEPA / Draft EIS

Horse Heaven Wind Farm - Horse Heaven Wind Farm - Docket:210011

Process Type Document Group(s) Document link File Date Document Set
SEPA Draft EIS
Chapter 5 - Cumulative Impacts 12/16/2022
SEPA Draft EIS
Chapter 6 - References 12/16/2022
SEPA Draft EIS
Chapter 7 - List of Preparers 12/16/2022
SEPA Draft EIS
Chapter 8 - Glossary 12/16/2022
SEPA Draft EIS
Chapter 9 - Distribution 12/16/2022
SEPA Draft EIS
Chapter 3 - Affected Environment 12/16/2022
SEPA Draft EIS
Appendix 3.10-2 SWCA 2022 Visual Impact Assessment Report 12/16/2022
SEPA Draft EIS
FECHA DE PUBLICACIÓN DECLARACIÓN PRELIMINAR DE IMPACTO AMBIENTAL 12/22/2022
SEPA Draft EIS
HOJA INFORMATIVA 12/22/2022
SEPA Draft EIS
Executive Summary 12/16/2022
SEPA Draft EIS
Fact sheet 12/16/2022
SEPA Draft EIS
Table of Contents 12/16/2022
SEPA Draft EIS
Appendix 3.5-1 Habitat Subtype Photographs 12/16/2022
SEPA Draft EIS
Appendix 3.8-1 Land and Shoreline Use Consistency Analysis 12/16/2022
SEPA Draft EIS
Appendix 3.10-1 Sky Glow Information and Comparisons 12/16/2022
SEPA Draft EIS
Appendix 3.16-1 Horse Heaven Wind Farms Proximity to Other Environmental Stressors 12/16/2022
SEPA Draft EIS
Appendix 4.3-1 Emission Calculations 12/16/2022
SEPA Draft EIS
Appendix 4.6-1 GAL 2022 Wind Turbine Wildlife Collision Risk Assessment 12/16/2022
SEPA Draft EIS
Appendix 4.10-1 Glare Analysis Inputs and Assumptions 12/16/2022
SEPA Draft EIS
Appendix 4.11-1 Inputs for Noise Modeling Assessment 12/16/2022
SEPA Draft EIS
Appendix 4.16-1 Technical Review of Horse Heaven Wind Farm, LLCs Economic Impact Analysis 12/16/2022
SEPA Draft EIS
Chapter 1 - Project Background and Purpose 12/16/2022
SEPA Draft EIS
Chapter 2 - Proposed Action and Alternatives 12/16/2022
SEPA Draft EIS
Chapter 4 - Analysis of Potential Impacts 12/16/2022
SEPA Draft EIS
Complete DRAFT EIS Document 12/16/2022 001