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EIS-0451: Notice of Intent to Prepare an Environmental Impact Statement

Hooper Springs Transmission Project, Caribou County, Idaho

BPA intends to prepare an EIS in accordance with the National Environmental Policy Act (NEPA) on the proposed construction, operation, and maintenance of a 115-kilovolt (kV) transmission line and a 138/115-kV substation (collectively referred to as the Hooper Springs Project). The new BPA substation would be called Hooper Springs Substation and would be located adjacent to PacifiCorp's existiog 345/138-kV Threemile Knoll Substation, located near the City of Soda Springs in Caribou County, Idaho. The new 115-kV single-circuit BP A transmission line would exlend generally north and east from these substations to a connection with Lower Valley Energy's (L VE's) existing 115-kV Lane Creek Substation, east of the City of Wayan, Idaho. The proposed project would address voltage stability and reliability concerns of two of BPA's full requirements customers, L VE and Fall River Rural Electric Cooperative (Fall River), which purchase all or almost all of the electric power required to serve their loads from BPA under existing contracts.