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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: 06/19/2025
Format: 06/19/2025
Document Groupsort descending Document Name File Date
Horse Heaven Wind Farm Pre-Hearing Conference Order #3 07/31/2023
Horse Heaven Wind Farm Data Request 7 Table 03/22/2023
Horse Heaven Wind Farm Appendix 4.16-1 Economic Impact Analysis Methodology - Final EIS 10/31/2023
Horse Heaven Wind Farm Horse Heaven Draft SCA Redlined 08/19/2024
Horse Heaven Wind Farm Refiled By Order As Public Comment: EXH-5613_T - Pre-Filed Testimony of TCC Witness Gaye Tesar 09/07/2023
Horse Heaven Wind Farm EXH-3008_R Don McIvor Wind Turbine Interactions with Wildlife and Their Habitats 08/25/2023
Horse Heaven Wind Farm Order Denying Yakama Nation Motion to Enforce Protective Order 03/25/2024
Horse Heaven Wind Farm October 18, 2022 Extension Request Comment_006 10/18/2022
Horse Heaven Wind Farm EXH-4006_T_REDACTED - Prefiled Direct Testimony of Terry Heemsah Sr. 08/23/2023
Horse Heaven Wind Farm Appendix H - Glare Analysis Report 02/08/2021
Horse Heaven Wind Farm Confederated Tribes and Bands of the Yakama Nation Comment Letter 03/02/2021
Horse Heaven Wind Farm Order Granting TCC Request for Leave to File Motion for Reconsideration 08/02/2023
Horse Heaven Wind Farm Confederated Tribes and Bands of the Yakama Nation DEIS Comment 02/01/2023
Horse Heaven Wind Farm Combined 0001-0110 02/01/2023
Horse Heaven Wind Farm Appendix J - Water Source Documentation 09/25/2023
Horse Heaven Wind Farm Summary of Proposed SCA Changes and Council Reconsideration 09/17/2024
Horse Heaven Wind Farm Refiled By Order As Public Comment: EXH-5917_S - Supplemental Testimony of TCC Witness Margaret Hue 09/07/2023
Horse Heaven Wind Farm Pre-Hearing Conference Order #3 - Corrected 07/31/2023
Horse Heaven Wind Farm Appendix 4.10-1 Glare Analysis Inputs and Assumptions 12/16/2022
Horse Heaven Wind Farm EXH-5821_R - Linda Lehman Resume 08/23/2023

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