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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. 

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.  

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

Columbia Solar / SEPA / docGroup / MDNS

Columbia Solar - TUUSSO Energy - Docket:170823

Process Type Document Group(s) Document link File Date Document Set
SEPA Documents
Mitigated Determination of Nonsignificance 02/27/2018 00081
Mitigated Determination of Nonsignificance, Notice of...
SEPA Documents
MDNS Draft Measures 02/05/2018 00150
Email to Justin Allegro, Stephen Lewis, Lori White, and...
SEPA Documents
Revised MDNS 04/17/2018 00171
Revised Mitigated Determination of Non-Significance for...
SEPA Email
Email RE MDNS Draft Measures 02/06/2018 00150
Email to Justin Allegro, Stephen Lewis, Lori White, and...
SEPA Email
SEPA Consultation Email 02/06/2018 00151
SEPA Consultation Email.
SEPA Memorandum
SEPA Memo 02/27/2018 00081
Mitigated Determination of Nonsignificance, Notice of...
SEPA Memorandum
SEPA determination letter 04/17/2018 00171
Revised Mitigated Determination of Non-Significance for...
SEPA Notice
MDNS Replacement 02/27/2018 00082
Replacement document for MDNS Notice.
SEPA Notice
Notice of Order granting expedited processing and issuance of revised MDNS 04/18/2018 00171
Revised Mitigated Determination of Non-Significance for...