Categorical Exclusion Determination
Office of NEPA Policy and Compliance
December 14, 2018
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Bonneville Power Administration has identified a transmission line clearance impairment on the Cascade Steel Tap to Carlton-Sherwood #1 transmission line near the Bonneville Power Administration Carlton Substation. At this location, the Cascade Steel Tap to Carlton-Sherwood #1 line is too close to the Bonneville Power Administration Forest Grove-McMinnville #1 line. To increase the clearance between the two transmission lines, Bonneville Power Administration proposes to install a single pole, and associated features (guy wires, cross-arms, insulators, etc.) between Carlton Substation and structure 11/1 of the Cascade Steel Tap to Carlton-Sherwood #1 line. All project activities would take place on Bonneville Power Administration fee-owned property, and would use traditional transmission line equipment (digger-derrick, back hoe, bucket truck, work trucks, etc.).