Categorical Exclusion Determinations: B4.6

Sacajawea Substation Expansion and Upgrade CX(s) Applied: B4.6Date: 41912 Location(s): WashingtonOffices(s): Bonneville Power Administration

Bouse Hills Pumping Plant to Harcuvar 115 Kilovolt Transmission Line, Inset Structure Installation CX(s) Applied: B4.6Date: 41878 Location(s): ArizonaOffices(s): Western Area Power Administration-Desert Southwest Region

Categorical Exclusion Determination

Liberty Parker #2 Transmission Line - Erosion Repair at Structure 53/1 CX(s) Applied: B4.6 Date: 06/09/2014 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region

Collbran Substation Conduit Installation and Breaker Replacement, Mesa County, Colorado CX(s) Applied: B4.6 Date: 06/03/2014 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

Swan Valley-Teton Overhead Fiber Line Install CX(s) Applied: B4.6 Date: 06/02/2014 Location(s): Idaho Offices(s): Bonneville Power Administration

Asarco and Troy Substations Grounding Mat Installations CX(s) Applied: B4.6 Date: 05/27/2014 Location(s): Montana Offices(s): Bonneville Power Administration

Doniphan Substation Backup Station Service Project CX(s) Applied: B4.6 Date: 05/05/2014 Location(s): Missouri Offices(s): Southwestern Power Administration

Southwestern Power Administration proposes to make grounding and drainage safety improvements to the Doniphan Substation.…

Line Tap Construction on the East Ellensburg Tap to Columbia-Ellensburg Transmission Line CX(s) Applied: B4.6 Date: 04/11/2014 Location(s): Washington, Washington Offices(s): Bonneville Power Administration