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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 EXH-5000_T Pre-filed testimony J. Richard Aramuru 08/25/2023
Horse Heaven Wind Farm Tri-cities C.A.R.E.S. Objection to Second Prehearing Conference Order 05/30/2023
Horse Heaven Wind Farm 0101-0200 04/11/2024
Horse Heaven Wind Farm Chapter 8 - Glossary 12/16/2022
Horse Heaven Wind Farm EXH-1050 - Wilkening and Rautenstrauch (2019) 08/23/2023
Horse Heaven Wind Farm DEIS_1001-1100 02/13/2023
Horse Heaven Wind Farm Updated ASC Appendix Q - Visual Simulation 06/15/2022
Horse Heaven Wind Farm Notification Letter to Council for the Environment 02/17/2021
Horse Heaven Wind Farm Combined SEPA Scoping Comments 00201 - 00300 07/10/2021
Horse Heaven Wind Farm EXH-2004 Pre-Filed Reply Testimony Greg Wendt 08/15/2023
Horse Heaven Wind Farm Appendix 3.16-1 Proximity to Environmental Stressors - Final EIS 10/31/2023
Horse Heaven Wind Farm Refiled By Order As Public Comment: EXH-5601_T - Pre-Filed Testimony of TCC Witness Barabara Buckmaster 09/07/2023
Horse Heaven Wind Farm General comments 0524 - 0574 06/13/2023
Horse Heaven Wind Farm Draft SCA with Attachments 04/29/2024
Horse Heaven Wind Farm Updated ASC Appendix H - Glare Analysis Report 12/29/2022
Horse Heaven Wind Farm EXH-5800_R - Prefiled Testimony of TCC Witness Kahryn Campbell 08/23/2023
Horse Heaven Wind Farm Response to Applicant's Limited Objection to Tri-Cities C.A.R.E.S. Petition to Intervene 02/24/2023
Horse Heaven Wind Farm Figure X0.4-1 Turbine Layout Option 1 01/22/2024
Horse Heaven Wind Farm 20210325_HH_LegalAdProofOfPub Unknown
Horse Heaven Wind Farm Data Request 2 Topographical Earth Maps 09/10/2021

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