Categorical Exclusion Determinations: B4.11

Medicine Bow Substation Control Building Installation Project (Amended) Carbon County, Wyoming CX(s) Applied: B4.11Date: 01/05/2015 Location(s): WyomingOffices(s): Western Area Power Administration-Rocky Mountain Region

North Bonneville Substation 23- Kilovolt Line Retermination CX(s) Applied: B4.11Date: 41926 Location(s): WashingtonOffices(s): Bonneville Power Administration

Puget Sound Area Northern Intertie-Covington and Raver substation upgrades (Amendment No. 2) CX(s) Applied: B4.11Date: 41908 Location(s): WashingtonOffices(s): Bonneville Power Administration

Morrow Flat Substation Construction and Related Improvements Near Boardman, Oregon CX(s) Applied: B4.11, B4.13Date: 41859 Location(s): OregonOffices(s): Bonneville Power Administration

Categorical Exclusion Determination

Davis Dam Maintenance Building Installation at the old Davis Dam 69 Kilovolt West Switchyard CX(s) Applied: B4.11Date: 41820 Location(s): ArizonaOffices(s): Western Area Power Administration-Desert Southwest Region

Deer Park Substation Connection Modifications CX(s) Applied: B4.11 Date: 06/17/2014 Location(s): Washington Offices(s): Bonneville Power Administration

Santiam Substation 230 Kilovolt Shunt Reactor Replacement CX(s) Applied: B4.11 Date: 05/05/2014 Location(s): Oregon Offices(s): Bonneville Power Administration

Alfalfa Substation Control House Replacement CX(s) Applied: B4.11 Date: 05/02/2014 Location(s): Washington Offices(s): Bonneville Power Administration

Celilo Converter Station Upgrades (update to previous CX issued on 7/25/13 and 3/11/14) CX(s) Applied: B4.11 Date: 04/30/2014 Location(s): Oregon Offices(s): Bonneville Power Administration