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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: 06/09/2025
Format: 06/09/2025
Document Group Document Name File Datesort ascending
Horse Heaven Wind Farm Yakima Nation Comment 05/19/2021
Horse Heaven Wind Farm WDFW Grassland and Shrubsteppe Corrected Mitigation Acreage 5/19/21 for the WDFW Rvw 3 letter dated 4/1/21 05/19/2021
Columbia Solar Columbia Solar Stormwater permit public comment Legal Ad - CAMAS 05/19/2021
Horse Heaven Wind Farm Comment from Nisqually Indian Tribe 05/19/2021
Columbia Solar Columbia Solar Stormwater permit public comment Legal Ad - PENSTEMON 05/19/2021
Columbia Solar Columbia Solar Stormwater permit public comment Legal Ad - URTICA 05/19/2021
EFSEC general documents May 18, 2021 Council Meeting Agenda 05/18/2021
EFSEC general documents May 18, 2021 Council Meeting Packet 05/18/2021
EFSEC general documents May 18, 2021 Council Meeting Minutes 05/18/2021
Horse Heaven Wind Farm Notice - SEPA Determination of Significance and Request for Comments on Scope of Environmental Impact Statement 05/11/2021
Horse Heaven Wind Farm Attachment C - Library List 05/11/2021
Horse Heaven Wind Farm Attachment A - SEPA Checklist 05/11/2021
Horse Heaven Wind Farm Attachment B - Figure 2.1-1 05/11/2021
Horse Heaven Wind Farm Department of Defense (DoD) Agreement Map 05/03/2021
Horse Heaven Wind Farm May 3, 2021 Spokane Tribe of Indians Deferral 05/03/2021
Columbia Solar Penstemon Initial Site Restoration Plan 05/01/2021
Columbia Solar Urtica Initial Site Restoration Plan 05/01/2021
Columbia Solar Camas Initial Site Restoration Plan 05/01/2021
Horse Heaven Wind Farm EFSEC letter - CTUIR Comment Received 04/29/2021
Horse Heaven Wind Farm Letter to Yakama Contacts 04/29/2021

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