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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

There are two Special Meetings for the Carriger Solar project set for May 5th and May 6th. For more information, visit the Carriger Solar webpage

EFSEC Document

Wild Horse Wind Power Project - Wild Horse Wind and Solar Power Project - Docket:180304

Process Type Document Group(s) Document link File Date Document Set
Compliance Email Email Cover to TAC Update 07/19/2018 00011
Wild Horse Technical Advisory Committee (TAC) annual update
Compliance Email ORCAA Test Plans 07/11/2018 00016
Grays Harbor Test Plan from Robert Moody. (via email)
Compliance Email [No group] 20210310_WDFW_addInfoReq_1 03/10/2021 00024
WDFW additional info request
Compliance Final EIS FSEIS Addendum 11/01/2018 00125
Site Certification Agreement Amendment 1, November 13, 2018
Compliance Legal Ad Special Meeting Legal Ad 08/06/2021 00038
August 6, 2021 Special Meeting Documents
Compliance Legal Ad Notice of Site Tour - June 18, 2019 06/12/2019 00050
June 18, 2019 Notice of Public Hearing Session Grays Harbor...
Compliance Legal Ad October 16 2019 Site Tour Notice 10/16/2019 00098
October 16, 2019 Site Tour Legal Ad. (hard copy rec'd...
Compliance Letter Cover Letter to Governor Inslee 10/31/2022
Compliance Letter Extension request letter 11/28/2022
Compliance Letter EFSEC response to Yakima County Commissioners 12/05/2022
Compliance Letter Request for an Amendment to the Site Certification Agreement Cover Letter 02/26/2018 00001
Amendment for Site Certification on behalf of Desert Claim...
Compliance Letter Columbia Generating Station Evaporation Pond Line Break Notification 06/07/2018 00008
Columbia Generating Station Evaporation Pond Line Break...
Compliance Letter EFSEC requests CFE appointment 02/17/2021 00012
Counsel for the Environment appoints Bill Sherman. (Hard...
Compliance Letter Counsel for the Environment appoints Megan Sallomi 11/08/2021 00012
Counsel for the Environment
Compliance Letter Counsel for the Environment appoints Bill Sherman 03/01/2021 00012
Counsel for the Environment appoints Bill Sherman. (Hard...
Compliance Letter Cover Letter 07/18/2018 00013
Updated Operation and Maintenance Manual for Stormwater/...
Compliance Letter Department of Energy WNP 1 and 4 Site Restoration and Funding Plan, aka 4 Party Agreement 01/29/2003 00016
4 Party Agreement Between Dept. of Energy, Energy Northwest...
Compliance Letter EFSEC requests CFE appointment 01/27/2021 00017
Counsel for the Environment (CFE) appoints Bill Sherman
Compliance Letter Counsel for the Environment appoints Bill Sherman 03/01/2021 00017
Counsel for the Environment (CFE) appoints Bill Sherman
Compliance Letter NPDES Approval Groundwater Mounding Study 07/26/2018 00022
Documents Related to NPDES Groundwater Mounding Study...
Compliance Letter Site Certification Amendment Request Letter 05/29/2009 00023
Site Certification Agreement and Amendment for Kittitas...
Compliance Letter Confederated Tribes of the Umitilla Indian Reservation Comments 04/09/2021 00025
Confederated Tribes of the Umatilla Indian Reservation...
Compliance Letter EFSEC letter - CTUIR Comment Received 04/29/2021 00025
Confederated Tribes of the Umatilla Indian Reservation...
Compliance Letter Letter to Yakama Contacts 04/29/2021 00026
Letter to the Yakama Nation.
Compliance Letter Letter from EFSEC to DOE regarding SIP Withdrawal Notice 07/30/2024 00027
Compliance Letter Transfer of ownership and notice of sale completion 09/15/2008 00027
Ownership Transfer documents for the Chehalis Generation...
Compliance Letter 2018 Strategic and Policy Plan Cover Letter 03/28/2019 00028
EFSEC 2018 Strategic and Policy Review
Compliance Letter Thank you letter from Governor Inslee 09/19/2019 00028
EFSEC 2018 Strategic and Policy Review
Compliance Letter Department of Ecology Wetland Site Visit 05/27/2021 00029
Letter from Department of Ecology regarding Wetlands Site...
Compliance Letter Data Request 1 Response Cover Letter 04/21/2021 00030
Data Request 1
Compliance Letter Submittal of Request for Amendment to Site Certification Agreement for Grays Harbor Energy Center 10/23/2009 00031
Site Certification Agreement Amendment for Grays Harbor...
Compliance Letter Cover letter 04/20/2021 00031
Army Corps of Determination regarding determination of...
Compliance Letter Yakima County Land Use Consistency Letter 03/18/2020 00040
Yakima County Land Use Consistency Analysis Letter
Compliance Letter Extension Request 09/17/2021 00042
Extension Request
Compliance Letter One Energy's Request for SCA Transfer Cover Letter 02/17/2022 00050
SCA Transfer public meeting documents
Compliance Letter Extension Request 01/07/2022 00055
Application for Site Certification (ASC) extension request
Compliance Letter Council Appointment Letter Department of Commerce Kate Kelly 12/30/2019 00066
Council Appointment letter for Department of Commerce Kate...
Compliance Letter Council member appointment letter Department of Ecology Robert Dengel 01/28/2020 00069
Department of Ecology Council Member appointment Letter for...
Compliance Letter SCA Amendment Request Letter 05/05/2023 001
Compliance Letter Extension Request 2 09/27/2022 001
Compliance Letter Extension Request Submitted and Withdrawn 03/20/2023 001
Compliance Letter Extension Request 3 06/12/2023 001
Compliance Letter Extension Request 4 01/24/2024 001
Compliance Letter Applicant Letter Regarding Hold on Badger Mountain Solar Project 06/27/2024 001
Compliance Letter CFE Appoints Megan Sallomi 01/23/2023 001
Compliance Letter Ecology Admission of Wetlands Mitigation 09/06/2018 00116
Letter from Ecology with regards to the Addendum to the...
Compliance Letter [No group] Ltr. Designating DNR Representative 01/28/2021 00129
Letter RE: DNR Representative designated to EFSEC. (scanned...
Compliance Letter Letter RE: Extension of Timeline for Expedited Processing 02/12/2018 00133
Letter from Tuusso Energy LLC requesting an extension to...
Compliance Letter Suspension of Site Certification Letter 09/05/2019 00238
Letter to Jason Evans, Order No. 877: Suspension of Site...
Compliance Letter November 20, 2019 TUUSSO's Request to Reinstate SCA's 11/20/2019 00239
TUUSSO Energy's Request to reinstate SCA's

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