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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 Draft SCA Appendix - Mitigation Measures 04/01/2024
Horse Heaven Wind Farm Updated ASC Appendix O - Acoustic Modeling Results by Noise Sensitive Receptor 12/29/2022
Horse Heaven Wind Farm Updated ASC Appendix K - REDACTED Biological Reports (Revised) Redline 06/15/2022
Horse Heaven Wind Farm Appendix F - Project Lease Boundary Landowner List with Legal Descriptions 09/25/2023
Horse Heaven Wind Farm Data Request 2 Response 2 Vegetation Impacts 09/10/2021
Horse Heaven Wind Farm Declaration of Willa B. Perlmutter in Support of Applicant's Opposition to Motion to Compel 06/28/2023
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 Land Use Hearing Comment #0001 03/30/2021
Horse Heaven Wind Farm Department of Defense (DoD) Agreement 11/10/2020
Horse Heaven Wind Farm EXH-1001_REVISED - Resume of Brynn Guthrie 08/24/2023
Horse Heaven Wind Farm EXH-1013 - Laposa & Mueller (2010) Article 08/18/2023
Horse Heaven Wind Farm Horse Heaven Special Vote Meeting Notice - RESCHEDULED 09/04/2024
Horse Heaven Wind Farm Updated ASC Redline Appendix H - Glare Analysis Report 12/01/2022
Horse Heaven Wind Farm Discovery Conference 07/03/2023
Horse Heaven Wind Farm Appendix W - Air Quality Dispersion Modeling Evaluation (New) - Redline 09/25/2023
Horse Heaven Wind Farm 20211011_Scout_DataReqLog-Tble1.12-1 Unknown
Horse Heaven Wind Farm Tri-Cities C.A.R.E.S. Reply to Opposition of Applicant to Motion to Dismiss RE Water Supply with Attachments 07/24/2023
Horse Heaven Wind Farm PHC4 Transcript 08/04/2023
Horse Heaven Wind Farm A0005_DAHP_Rvw_Ltr 03/09/2021
Horse Heaven Wind Farm Tri-Cities CARES Venue letter 03/23/2023

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