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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

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Format: 06/19/2025
Format: 06/19/2025
Document Groupsort descending Document Name File Date
Horse Heaven Wind Farm Ch.4 Analysis of Potential Impacts - Final EIS 10/31/2023
Horse Heaven Wind Farm EXH-1042 - American Wind Wildlife Institute (2020) 08/23/2023
Horse Heaven Wind Farm Appendix B - Preliminary Geotech Report 02/08/2021
Horse Heaven Wind Farm EXH-5501_Revised Pre-filed testimony Richard Simon 08/25/2023
Horse Heaven Wind Farm EXH-1034_R Rebuttal Testimony Jessica Wadsworth 08/15/2023
Horse Heaven Wind Farm 0201-0300 04/11/2024
Horse Heaven Wind Farm Chapter 9 - Distribution 12/16/2022
Horse Heaven Wind Farm Updated ASC Appendix S - Economic Impact Assessment 06/15/2022
Horse Heaven Wind Farm Yakama Nation’s Reply to Motion for Continuance of Adjudication Deadlines 05/31/2023
Horse Heaven Wind Farm Combined SEPA Scoping Comments 00301 - 00361 07/10/2021
Horse Heaven Wind Farm DEIS_1501-1600 02/13/2023
Horse Heaven Wind Farm Appendix 4.10-1 Glare Analysis Report - Final EIS 10/31/2023
Horse Heaven Wind Farm EXH-1063_X - Demonstrative Map 08/23/2023
Horse Heaven Wind Farm Notice of Public Information Meeting 03/09/2021
Horse Heaven Wind Farm Refiled By Order As Public Comment: EXH-5610_R - Pre-Filed Testimony of TCC Witness William McKay 09/07/2023
Horse Heaven Wind Farm EXH-2012 Benton County Resolution 2021-301 08/15/2023
Horse Heaven Wind Farm Index of Supporting Documents 04/29/2024
Horse Heaven Wind Farm Updated ASC Appendix J - Water Source Documentation 12/29/2022
Horse Heaven Wind Farm Figure X0.4-2 Turbine Layout Option 2 01/22/2024
Horse Heaven Wind Farm Letter from Judge Torem RE Errors in Pre-Filed Testimony and Exhibits 06/21/2023

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