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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 EXH-1049 - Whitby et al. (2021) 08/23/2023
Horse Heaven Wind Farm Chapter 3 - Affected Environment 12/16/2022
Horse Heaven Wind Farm Appendix 4.6-1 Wildlife Collision Study - Final EIS 10/31/2023
Horse Heaven Wind Farm Notification Letter to Benton County Commissioner 02/17/2021
Horse Heaven Wind Farm Data Request 6 Response 02/07/2022
Horse Heaven Wind Farm EXH-2003 Pre-Filed Testimony Michelle Cooke 08/15/2023
Horse Heaven Wind Farm 202105_DODMitAgrmntMAP Unknown
Horse Heaven Wind Farm Refiled By Order As Public Comment: EXH-5607_T - Pre-Filed Testimony of TCC Witness John Christensen 09/07/2023
Horse Heaven Wind Farm DEIS_1701-1800 02/13/2023
Horse Heaven Wind Farm 892 - Horse Heaven Final Adjudicative Order Resolving Contested Issues 04/17/2024
Horse Heaven Wind Farm Figure X0.3-2 Turbine Layout Option 2 01/22/2024
Horse Heaven Wind Farm EXH-5801_R - Kahryn Campbell Photographs 08/23/2023
Horse Heaven Wind Farm Updated ASC Appendix O - Acoustic Modeling Results by Noise Sensitive Receptor 12/29/2022
Horse Heaven Wind Farm Appendix F - Project Lease Boundary Landowner List with Legal Descriptions 09/25/2023
Horse Heaven Wind Farm Energy Facility Site Evaluation Council 03/30/2021
Horse Heaven Wind Farm Order Denying TCC Motion to Recuse ALJ Torem 06/23/2023
Horse Heaven Wind Farm EXH-4012_R Reply Testimony Mark Nuetzmann 08/15/2023
Horse Heaven Wind Farm Data Request 2 Response 2 Vegetation Impacts 09/10/2021
Horse Heaven Wind Farm Refiled By Order As Public Comment: EXH-5629_T - Pre-Filed Testimony of TCC Witness Tim Richardson 09/07/2023
Horse Heaven Wind Farm PHC1 Agenda 03/10/2023

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