ePlanning DOI-BLM-ID-B000-2014-0003-EIS (Gateway West Supplemental EIS (SEIS))  
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Last Updated:
08/29/2017 12:15:56 MDT
Gateway West Transmission Line Updates
The Final SEIS was published on October 5, 2016.  The Record of Decision issued on January 19, 2017 has been remanded for reconsideration.  Click ‘Documents’ in the navigation column to the left to read the FSEIS and the ROD.  Click ‘Links’ to access the Environmental Assessment being prepared to support reconsideration and to access the Final EIS documents for segments 1-7.  

Rocky Mountain Power and Idaho Power have submitted a right of way (ROW) application to locate 500-kV electric transmission lines on Federal lands in Wyoming and Idaho.  A November 12, 2013 Record of Decision (ROD) for the project deferred a decision on ROW grants Segments 8 and 9 of the project, in order to provide additional time for permitting agencies and other stakeholders to pursue a consensus regarding siting routes for these segments.  As presented in the 2013 Final EIS, Segment 8 would be one single-circuit 500-kV transmission line between the existing Midpoint Substation in Jerome County, Idaho, and the existing Hemingway Substation, located in Owyhee County approximately 30 miles southwest of Boise, Idaho.  As presented in the 2013 Final EIS, Segment 9 would be one single-circuit 500-kV transmission line between the future Cedar Hill Substation southeast of Twin Falls, Idaho, in Cassia County and the existing Hemingway Substation.  The revised route alignments for Segments 8 and 9 which the Applicants submitted in August 2014 retain the endpoints presented in the 2013 Final EIS.  The BLM prepared an SEIS for these revised alignments for Segments 8 and 9 and identified Alternative 5 as the Agency Preferred Alternative in the Final SEIS.  The ROD selecting Alternative 5 was remanded for reconsideration in April 2017.