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Categorical Exclusion Determinations: B4.6

Existing Regulations

B4.6: Additions and modifications to transmission facilities
Additions or modifications to electric power transmission facilities within a previously disturbed or developed facility area. Covered activities include, but are not limited to, switchyard rock grounding upgrades, secondary containment projects, paving projects, seismic upgrading, tower modifications, load shaping projects (such as the installation and use of flywheels and battery arrays), changing insulators, and replacement of poles, circuit breakers, conductors, transformers, and crossarms.

Previous Regulations

Categorical Exclusion Determinations dated before November 14th, 2011 were issued under previous DOE NEPA regulations. See the Notice of Final Rulemaking (76 FR 63763, 10/13/2011) for information changes to this categorical exclusion.

DOCUMENTS AVAILABLE FOR DOWNLOAD

  • April 11, 2014

    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

  • April 1, 2014

    Emergency Installation of Concrete Pad for Western's Communication Tower at Valley Farms Substation
    CX(s) Applied: B4.6
    Date: 04/01/2014
    Location(s): Arizona, Arizona
    Offices(s): Western Area Power Administration-Desert Southwest Region

  • March 6, 2014

    Deering Lake and Yuma Substation Upgrades
    CX(s) Applied: B4.6
    Date: 03/06/2014
    Location(s): Colorado
    Offices(s): Western Area Power Administration-Rocky Mountain Region

  • February 6, 2014

    Glen Canyon Substation 345 Kilovolt - Sulfur Hexafluoride and Concrete Pad Installation
    CX(s) Applied: B4.6
    Date: 02/06/2014
    Location(s): Arizona
    Offices(s): Western Area Power Administration-Desert Southwest Region

  • January 21, 2014

    Big George-Heart Mountain 69 Kilovolt Transmission Line Glendale Tap Replacement, Park County, Wyoming
    CX(s) Applied: B4.6
    Date: 01/21/2014
    Location(s): Wyoming
    Offices(s): Western Area Power Administration-Rocky Mountain Region

  • January 13, 2014

    Cable Trenching in the Gila Substation
    CX(s) Applied: B4.6
    Date: 01/13/2014
    Location(s): Arizona
    Offices(s): Western Area Power Administration-Desert Southwest Region

  • November 19, 2013

    Edgeley Substation
    CX(s) Applied: B4.6
    Date: 11/19/2013
    Location(s): North Dakota
    Offices(s): Western Area Power Administration-Upper Great Plains Region

  • November 12, 2013

    Insulator Replacement on North Bonneville-Midway No. 1 Transmission Line (update to previous CX issued 7/16/13)
    CX(s) Applied: B4.6
    Date: 11/12/2013
    Location(s): Washington
    Offices(s): Bonneville Power Administration

  • September 30, 2013

    Real-Time In-Situ Carbon Dioxide Monitoring (RICO2M) Network for Sensitive Subsurface...
    CX(s) Applied: A11, B4.6
    Date: 09/30/2013
    Location(s): Texas
    Offices(s): National Energy Technology Laboratory

  • September 30, 2013

    Echo Lake Substation Isolation Disconnect Switch Installation
    CX(s) Applied: B4.6
    Date: 09/30/2013
    Location(s): Washington
    Offices(s): Bonneville Power Administration

  • September 18, 2013

    Yaak Substation Transformer Replacement
    CX(s) Applied: B4.6
    Date: 09/18/2013
    Location(s): Montana
    Offices(s): Bonneville Power Administration

  • September 1, 2013

    Adams Tap Motor-Operator Interrupters and Control Building Replacement
    CX(s) Applied: B4.6
    Date: 09/11/2013
    Location(s): Arizona
    Offices(s): Western Area Power Administration-Desert Southwest Region

  • August 26, 2013

    Emergency Storm Damage Repairs to the Gila North Gila, Gila Knob, and Sonora San Luis Transmission Lines, near Yuma, Yuma County, Arizona
    CX(s) Applied: B4.6
    Date: 08/26/2013
    Location(s): Arizona
    Offices(s): Western Area Power Administration-Desert Southwest Region

  • August 26, 2013

    Naselle Ridge Emergency Generator Replacement
    CX(s) Applied: B4.6
    Date: 08/26/2013
    Location(s): Washington
    Offices(s): Bonneville Power Administration

  • August 6, 2013

    Transmission Line 3005, Structure 290 Replacement
    CX(s) Applied: B4.6
    Date: 08/06/2013
    Location(s): Oklahoma
    Offices(s): Southwestern Power Administration

  • July 17, 2013

    Capacity Increase on Bonneville Power Administration's (BPA) Horse Ranch Tap Line
    CX(s) Applied: B4.6
    Date: 07/17/2013
    Location(s): Washington
    Offices(s): Bonneville Power Administration

  • July 17, 2013

    McNary Substation Shunt Capacitor Addition
    CX(s) Applied: B4.6
    Date: 07/17/2013
    Location(s): Oregon
    Offices(s): Bonneville Power Administration

  • July 16, 2013

    Insulator Replacement on Bonneville Power Administration's (BPA) North Bonneville-Midway No. 1 Transmission Line
    CX(s) Applied: B4.6
    Date: 07/16/2013
    Location(s): Washington
    Offices(s): Bonneville Power Administration

  • July 9, 2013

    Hayden Substation 230-kilovolt Tie Line
    CX(s) Applied: B4.6
    Date: 07/09/2013
    Location(s): Colorado
    Offices(s): Western Area Power Administration-Rocky Mountain Region

  • July 3, 2013

    Cottonwood-Roseville Optical Groundwire Project
    CX(s) Applied: B4.6, B4.7, B4.11, B4.13
    Date: 07/03/2013
    Location(s): California
    Offices(s): Western Area Power Administration-Sierra Nevada Region

  • July 2, 2013

    Cheyenne Substation KV2A 115-kilovolt Tie Line Installation
    CX(s) Applied: B4.6
    Date: 07/02/2013
    Location(s): Wyoming
    Offices(s): Western Area Power Administration-Rocky Mountain Region

  • July 2, 2013

    Removal and replacement of Oracle Breakers 562 and 762 along with associated disconnects.
    CX(s) Applied: B4.6
    Date: 07/02/2013
    Location(s): Arizona
    Offices(s): Western Area Power Administration-Desert Southwest Region

  • July 1, 2013

    Nine Canyon Communication Tower Addition
    CX(s) Applied: B4.6
    Date: 07/01/2013
    Location(s): Washington
    Offices(s): Bonneville Power Administration

  • June 17, 2013

    Hat Rock Switching Station Replacement Project
    CX(s) Applied: B4.6
    Date: 06/17/2013
    Location(s): Oregon
    Offices(s): Bonneville Power Administration

  • June 14, 2013

    Alvey Substation 115-kilovolt and 230-kV Breaker Replacement Project
    CX(s) Applied: B4.6
    Date: 06/14/2013
    Location(s): Oregon
    Offices(s): Bonneville Power Administration