CX-002438: Categorical Exclusion Determination

Rocky Reach-Maple Valley Number-1 Transmission Line Bridge Replacement ProjectCX(s) Applied: B1.3Date: 05/03/2010Location(s): Kittitas County, WashingtonOffice(s): Bonneville Power Administration

Office of NEPA Policy and Compliance

May 3, 2010
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Rocky Reach-Maple Valley Number-1 Transmission Line Bridge Replacement Project
CX(s) Applied: B1.3
Date: 05/03/2010
Location(s): Kittitas County, Washington
Office(s): Bonneville Power Administration

Bonneville Power Administration (BPA) has a need to construct a bridge across Cold Creek. Although a bridge once stood at this location, currently the only access to mile 47 of BPA?s Rocky Reach-Maple Valley Number- 1 transmission line is through an existing ford. Cold Creek provides habitat for Middle Columbia River Basin bull trout, a listed threatened species. As a result, future access to mile 47 of the Rocky Reach-Maple Valley transmission line may be greatly restricted or eliminated. Abandoning the ford and constructing a bridge is necessary to ensure ongoing access to the line. Proposed project work includes: vegetation removal, removal of old timber abutments, installation of new abutments, building of approaches, and placing of decking. All work would be in accordance with National Electrical Safety Code and BPA standards.

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