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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. If you would like to submit a comment visit our comment database: https://comments.efsec.wa.gov

EFSEC Document Search

Filter documents by Facility or Post Date.
Format: 06/13/2025
Format: 06/13/2025
Document Groupsort descending Document Name File Date
Horse Heaven Wind Farm Tri-Cities C.A.R.E.S Motion for Disqualification / Recusal of Presiding Administrative Law Judge with Decl ISO and Decserv 05/25/2023
Horse Heaven Wind Farm Chapter 2 - Proposed Action and Alternatives 12/16/2022
Horse Heaven Wind Farm DEIS_0501-0600 02/13/2023
Horse Heaven Wind Farm 0001-0100 04/11/2024
Horse Heaven Wind Farm Departent of Ecology SEPA Scoping Comment 06/08/2021
Horse Heaven Wind Farm Proof of Service 02/17/2021
Horse Heaven Wind Farm EXH-1049 - Whitby et al. (2021) 08/23/2023
Horse Heaven Wind Farm Updated ASC Appendix P - Emergency Response Plan 06/15/2022
Horse Heaven Wind Farm Appendix 3.10-2 Updated SWCA Visual Study - Final EIS 10/31/2023
Horse Heaven Wind Farm EXH-2003 Pre-Filed Testimony Michelle Cooke 08/15/2023
Horse Heaven Wind Farm EXH-5912_S - Supplemental Testimony of Benton County Fire Chief Lonnie E. Click in Response to Questions from Chair Drew 09/07/2023
Horse Heaven Wind Farm Order Denying Motions 06/05/2023
Horse Heaven Wind Farm Updated ASC Appendix C - SEPA Checklist 12/29/2022
Horse Heaven Wind Farm DEIS_2201-2300 02/13/2023
Horse Heaven Wind Farm 892 - Horse Heaven Final Adjudicative Order Resolving Contested Issues 04/17/2024
Horse Heaven Wind Farm Applicant's PowerPoint Presentation 03/30/2021
Horse Heaven Wind Farm Proof of Service 02/25/2021
Horse Heaven Wind Farm EXH-5801_R - Kahryn Campbell Photographs 08/23/2023
Horse Heaven Wind Farm Figure X0.3-2 Turbine Layout Option 2 01/22/2024
Horse Heaven Wind Farm Appendix B - Preliminary Geotechnical Investigation Report 09/25/2023

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