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.

The Carriger Solar Draft Order #899 is available for comment April 29th through May 1st 11:59 pm. You can see the Draft Order under the "Orders" header towards the bottom of the Carriger Solar webpage.

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.

If you would like to submit a comment for either of the above visit our comment database: https://comments.efsec.wa.gov

Horse Heaven Wind Farm

Horse Heaven Wind Farm - Horse Heaven Wind Farm - Docket:210011

Process	Type	Document Group(s)	Document link	File Date	Document Set
SEPA	Documents	Data Request 1	Data Request 1 table	05/27/2021	00043 Data Request 1
SEPA	Documents	Data Request 1	Data Request Aesthetics Panoramas	09/10/2021	00043 Data Request 1
SEPA	Documents	Data Request 1	Habitat Field Survey Data Request No.1	09/13/2021	00043 Data Request 1
SEPA	Documents	Data Request 2	Data Request 2 table	07/16/2021	00044 Data Request 2
SEPA	Documents	Data Request 2	Data Request 2 Response	08/16/2021	00044 Data Request 2
SEPA	Documents	Data Request 2	Data Request 2 Air Wind Atmospheric stability roses	09/10/2021	00044 Data Request 2
SEPA	Documents	Data Request 2	Data Request 2 Supplemental Response 2	10/20/2021	00044 Data Request 2
SEPA	Documents	Data Request 2	Data Request 2 Supplemental Response 3	11/02/2021	00044 Data Request 2
SEPA	Documents	Data Request 3	Data Request Table	07/22/2021	00045 Data Request 3
SEPA	Documents	Data Request 3	Data Request Response Table	08/18/2021	00045 Data Request 3
SEPA	Documents	Data Request 3	Data Request 3 Air Emissions	10/20/2021	00045 Data Request 3
SEPA	Documents	Data Request 3	Data Request 3 Visual	10/20/2021	00045 Data Request 3
SEPA	Documents	Data Request 4	Data Request 4 Table	10/27/2021	00051 Data Request 4
SEPA	Documents	Data Request 4	Data Request 4 Data Layers	11/02/2021	00051 Data Request 4
SEPA	Documents	Data Request 5	Data Request 5 Data Layers	11/02/2021	00052 Data Request 5
SEPA	Documents	Data Request 5	Data Request 5 Table	11/05/2021	00052 Data Request 5
SEPA	Documents	Data Request 5	Data Request 5 Response	11/23/2021	00052 Data Request 5
SEPA	Documents	[No group]	20210823_Scout_ContactLog-Tble1.12-1		00053 Data Request Sheets
SEPA	Documents	[No group]	20210913_Scout_DataReqLog-Tble1.12-1		00053 Data Request Sheets
SEPA	Documents	[No group]	20211011_Scout_DataReqLog-Tble1.12-1		00053 Data Request Sheets
SEPA	Documents	[No group]	20211104_Scout_DataReqLog-Tble1.12-1		00053 Data Request Sheets
SEPA	Documents	Data Request 6	Data Request 6 Table	01/13/2022	00054 Data Request 6
SEPA	Documents	Data Request 6	Data Request 6 Response	02/07/2022	00055 Data Request 6
SEPA	Documents	DEIS Public Comment Meeting Documents	Horse Heaven DEIS Public Comment Meeting Speaker Sign Up Sheet	02/01/2023	001
SEPA	Documents	HH Mitigation Slides	January 31, 2024 Council Meeting HH Mitigation Slides	01/31/2024	001
SEPA	Documents	HH Mitigation Slides	November 15, 2023 Council Meeting HH Mitigation Slides	11/15/2023	001
SEPA	Documents	HH Mitigation Slides	December 20, 2023 Council Meeting HH Mitigation Slides	12/20/2023	001
SEPA	Documents	FEIS	Fact Sheet - Final EIS	10/31/2023	FEIS
SEPA	Documents	FEIS	Executive Summary - Final EIS	10/31/2023	FEIS
SEPA	Documents	FEIS Corresponding Docs	WSDOT Traffic Impact Analysis review letter	11/20/2023	FEIS
SEPA	Documents	FEIS	Hoja Informativa - Declaración Final de Impacto Ambiental	11/13/2023	FEIS
SEPA	Documents	FEIS	Resumen ejecutivo - Declaración Final de Impacto Ambiental	10/31/2023	FEIS
SEPA	Draft EIS	Draft EIS	Executive Summary	12/16/2022
SEPA	Draft EIS	Draft EIS	Fact sheet	12/16/2022
SEPA	Draft EIS	Draft EIS	Table of Contents	12/16/2022
SEPA	Draft EIS	Draft EIS	Appendix 3.5-1 Habitat Subtype Photographs	12/16/2022
SEPA	Draft EIS	Draft EIS	Appendix 3.8-1 Land and Shoreline Use Consistency Analysis	12/16/2022
SEPA	Draft EIS	Draft EIS	Appendix 3.10-1 Sky Glow Information and Comparisons	12/16/2022
SEPA	Draft EIS	Draft EIS	Appendix 3.16-1 Horse Heaven Wind Farms Proximity to Other Environmental Stressors	12/16/2022
SEPA	Draft EIS	Draft EIS	Appendix 4.3-1 Emission Calculations	12/16/2022
SEPA	Draft EIS	Draft EIS	Appendix 4.6-1 GAL 2022 Wind Turbine Wildlife Collision Risk Assessment	12/16/2022
SEPA	Draft EIS	Draft EIS	Appendix 4.10-1 Glare Analysis Inputs and Assumptions	12/16/2022
SEPA	Draft EIS	Draft EIS	Appendix 4.11-1 Inputs for Noise Modeling Assessment	12/16/2022
SEPA	Draft EIS	Draft EIS	Appendix 4.16-1 Technical Review of Horse Heaven Wind Farm, LLCs Economic Impact Analysis	12/16/2022
SEPA	Draft EIS	Draft EIS	Chapter 1 - Project Background and Purpose	12/16/2022
SEPA	Draft EIS	Draft EIS	Chapter 2 - Proposed Action and Alternatives	12/16/2022
SEPA	Draft EIS	Draft EIS	Chapter 4 - Analysis of Potential Impacts	12/16/2022
SEPA	Draft EIS	Draft EIS	Chapter 5 - Cumulative Impacts	12/16/2022
SEPA	Draft EIS	Draft EIS	Chapter 6 - References	12/16/2022
SEPA	Draft EIS	Draft EIS	Chapter 7 - List of Preparers	12/16/2022

EFSEC - The State of Washington Energy Facility Site Evaluation Council

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Horse Heaven Wind Farm

Horse Heaven Wind Farm - Horse Heaven Wind Farm - Docket:210011

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