Update: The Bureau of Land Management (BLM) issued a Decision Record for segments 8 and 9 on April 18, 2018.

Rocky Mountain Power and Idaho Power filed applications with the Bureau of Land Management (BLM) and U.S. Forest Service (USFS) in 2007 for a right of way grant and special use permit, respectively, to construct, operate and maintain the Gateway West Transmission Line Project on federal lands. The BLM released its Record of Decision (ROD) on November 14, 2013, for segments 1 through 7 (Windstar to Populus, Populus to Midpoint and Populus to Cedar Hill) and segment 10 (Midpoint to Cedar Hill) of the project in Wyoming and eastern Idaho. It identifies the BLM authorized route on public land for these segments.

The BLM postponed a decision on segments 8 (Midpoint to Hemingway) and 9 (Cedar Hill to Hemingway) and determined additional environmental review on these segments was needed. A draft supplemental EIS for segments 8 and 9 was released on March 11, 2016 and a final supplemental EIS was released on October 7, 2016. The BLM released its ROD for segments 8 and 9 on January 19, 2017.

On April 17, 2017, the Interior Board of Land Appeals (IBLA) remanded the January ROD back to the BLM Idaho State Office for reconsideration of the route alternatives. The BLM completed an environmental assessment (EA) to reconsider the January 2017 decision. A notice of intent to prepare the EA was published on August 28, 2017, and began a 30-day scoping period. The BLM published a draft EA on November 3, 2017 and the final EA on January 5, 2018. The BLM issued a Decision Record on the remaining portions of segments 8 and 9 in spring 2018. For more information on the EA process, visit the BLM project website.