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Gateway West Transmission Line | Segments 8 and 9








The BLM is preparing a supplemental environmental impact statement (EIS) analyzing new information - not previously evaluated in the 
April 2013 final EIS - associated with the potential impacts of approving 
a right-of-way (ROW) application for segments 8 and 9 of 
the Gateway West 500-kilovolt (kV) transmission line project.

On August 8, 2014, Rocky Mountain Power and Idaho Power submitted a revised application and revised plan of development for segments 8 and 9. The BLM has determined that the new information in these revised documents warrants additional analysis and public review under the National Environmental Policy Act (NEPA).

The BLM has initiated scoping for the supplemental EIS. The BLM invites comments on issues, potential impacts, mitigation measures, and alternatives associated with granting rights-of-way on public lands for segments 8 and 9 that were not addressed in the 2013 final EIS.  

  red graphic dotREAD or DOWNLOAD scoping documents

  red graphic dotCOMMENT on scoping issues

   The most helpful scoping comments:

  • provide new information about segment 8 or 9, or the proposed mitigation and enhancement portfolio (MEP); 
  • identify new issues that should be considered; 
  • identify a different way to meet the underlying need; 
  • point out a specific flaw in the companies' proposal, in the information developed by the RAC, or in past NEPA analysis; 
  • suggest methodologies that should be used in the NEPA analysis, including reason(s) why; and/or 
  • identify a different source of credible research that should be used in the NEPA analysis. 

 Segments 1 – 7 and 10 | BLM Wyoming 
  The BLM has authorized routes on public lands for segments 1–7 and 10. 
Visit the BLM-Wyoming website for information on these segments.  

 SCHEDULE at a glance
¦ Notice of Intent  09.19.2014
♦ Scoping  closes 10.24.2014
  Draft Supplemental EIS
  Public comment
  Final Supplemental EIS
  Public comment
  Protest period
  Record of Decision

Snake River Canyon looking north, near Grand View, Idaho

Mailing List
Join the mailing list to receive updates and announcements about the supplemental EIS for segments 8 and 9 of the project.

Proponents' website
The Rocky Mountain Power–Idaho Power website for the Gateway West project has additional information.  

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