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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

EFSEC Document Set

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SEPA

File Datesort descending Document Process Type
10/31/2023 Executive Summary - Final EIS SEPA Documents
10/31/2023 Appendix 3.5-1 Habitat Photos - Final EIS SEPA Final EIS
10/31/2023 Appendix 4.16-1 Economic Impact Analysis Methodology - Final EIS SEPA Final EIS
10/31/2023 Ch.1 Project Background - Final EIS SEPA Final EIS
10/31/2023 Appendix 3.8-1 LSU Consistency Analysis - Final EIS SEPA Final EIS
10/31/2023 Appendix 10-1 Comments and Responses on Draft EIS - Final EIS SEPA Final EIS
10/31/2023 Ch.2 Proposed Action and Alternatives - Final EIS SEPA Final EIS
10/31/2023 Appendix 3.10-1 Sky Glow Comparisons - Final EIS SEPA Final EIS
10/31/2023 Notice - Final EIS SEPA Notice
10/31/2023 Ch.3 Affected Environment - Final EIS SEPA Final EIS
10/31/2023 Appendix 3.10-2 Updated SWCA Visual Study - Final EIS SEPA Final EIS
10/31/2023 Ch.4 Analysis of Potential Impacts - Final EIS SEPA Final EIS
10/31/2023 Appendix 3.16-1 Proximity to Environmental Stressors - Final EIS SEPA Final EIS
10/31/2023 Ch.5 Cumulative Impacts - Final EIS SEPA Final EIS
10/31/2023 Appendix 4.3-1 Air Quality Emission Calculations - Final EIS SEPA Final EIS
10/31/2023 Final EIS - FULL DOCUMENT SEPA Final EIS
10/31/2023 Ch.6 References - Final EIS SEPA Final EIS
10/31/2023 Appendix 4.3-2 Tetra Tech 2023 Air Quality Dispersion Modeling Evaluation - Final EIS SEPA Final EIS
10/31/2023 Cover letter - Final EIS SEPA Letter
10/31/2023 Ch.7 List of Preparers - Final EIS SEPA Final EIS
10/31/2023 Appendix 4.6-1 Wildlife Collision Study - Final EIS SEPA Final EIS
10/31/2023 Table of Contents - Final EIS SEPA Letter
10/31/2023 Ch.8 Glossary - Final EIS SEPA Final EIS
10/31/2023 Appendix 4.6-1 Wildlife Collision Study - Final EIS SEPA Final EIS
10/31/2023 Title Page - Final EIS SEPA Letter
10/31/2023 Resumen ejecutivo - Declaración Final de Impacto Ambiental SEPA Documents
10/31/2023 Ch.9 Distribution - Final EIS SEPA Final EIS
10/31/2023 Appendix 4.10-1 Glare Analysis Report - Final EIS SEPA Final EIS
10/31/2023 Fact Sheet - Final EIS SEPA Documents
10/31/2023 Ch.10 Comments & Responses on Draft EIS - Final EIS SEPA Final EIS
10/31/2023 Appendix 4.11-1 Noise Modeling Assessment - Final EIS SEPA Final EIS
11/13/2023 Hoja Informativa - Declaración Final de Impacto Ambiental SEPA Documents
11/16/2023 Notice - Final EIS Special Meeting SEPA Notice
11/20/2023 WSDOT Traffic Impact Analysis review letter SEPA Documents
11/28/2023 Agenda - Final EIS Special Meeting SEPA Agenda
11/29/2023 Mitigation Presentation - Final EIS Special Meeting SEPA Presentation
01/22/2024 Figure X0.1-2 Turbine Layout Option 2 SEPA Map
01/22/2024 Council Exclusion Considerations 1 through 4 SEPA Map
01/22/2024 Figure X0.2-1 Turbine Layout Option 1 SEPA Map
01/22/2024 Figure X0.2-2 Turbine Layout Option 2 SEPA Map

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