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National Environmental Policy Act (NEPA) Categorically Excluded Actions

Categorical Exclusions (CX) – Categorical exclusions are categories of actions that DOE has determined, by regulation, do not individually or cumulatively have a significant effect on the human environment and for which neither an environmental assessment nor an environmental impact statement is typically required. Title 10 Code of Federal Regulations Part 1021, National Environmental Policy Act Implementing Procedures, Appendices A and B to Subpart D, list DOE's categorical exclusions. Appendix A classes of actions are those actions considered to be general agency actions, such as awarding a contract or hiring personnel. Appendix B classes of actions include actions such as property transfers, erosion control, sampling and characterization of water, soil, rock, or contaminants, or, drilling wells for sampling or monitoring of groundwater. The table below provides a list (with links) of recent CX Appendix B determinations.

List of Recent Categorically Excluded Actions

NEPA ID Number Short Title Date Signed Determination(s)
LM 05-16 Air Stripper Removal and Disposal at the Pinellas County, Florida, Site. 04/19/2016 B1.24
LM 04-16 Conduct Pedogenesis Study at the Falls City, Texas, Disposal Site 04/22/2016 B3.1
LM 01-16 Evaporation Pond Removal and Verification and Associated Road Maintenance, Durango, Colorado, Disposal Site. 05/09/2016 B1.3 and B6.1
LM 32-15 Install Four New Groundwater Monitoring Wells at the Shiprock, New Mexico, Disposal Site 03/28/2016 B3.1
LM 21-15 Lease of the Cabin Portion of Building 12, Grand Junction, Colorado, Site 09/14/2015 B1.24 and B1.25
LM 18-15 Groundwater Monitoring and Associated Actions at the Green River, Utah, Disposal Site. 10/23/2015 B1.24, B1.3 and B3.1
LM 17-15 Field Studies to include installing groundwater monitoring wells, obtaining groundwater and sediment samples, land surveys, measuring surface water discharge, and conducting miscellaneous field activities near the former Riverton, Wyoming, Processing Site 08/17/2015 B3.1
LM 16-15 Remove and reuse/recycle sulfuric acid from an onsite tank at the Tuba City, AZ disposal site. 09/24/2015 B1.28
LM 07-15 Operations, Maintenance, Repairs, Modifications, and Ongoing CERCLA Remedy-Related Actions and Site Facility Support Activities for the Monticello, Utah, Sites 03/31/2015 B1.3; B1.11; B1.24; B1.26; B1.33; B2.5; B3.1; B6.1
LM 06-15 Obtain subsurface soil samples from five locations on the San Juan River floodplain near Shiprock, New Mexico, Disposal Site. 03/26/2015 B3.1
LM 03-15 Maintenance and Related Activities at the Burris Park, California, Site 03/11/2015 B1.3, B1.11, B1.24, B3.1, B6.1
LM 28-14 Aerial Photography and Topographic Mapping of the Weldon Spring, Missouri, Site 12/23/2014 B3.2
LM 22-14 Stanford Linear Accelerator Center-Science Focus Area (SLAC-SFA) Geoprobe Sampling Near the Naturita, Colorado, Title I Uranium Mill Tailings Radiation Control Act Processing Site 10/14/2014 B3.1
LM 21-14 Onsite and Offsite Bioremediation Injections and Related Activities at the Pinellas County, Florida, Site 10/14/2014 B3.1, B6.1, B6.2
LM 14-14 Installation and Redevelopment of Groundwater Monitoring Wells at the Salmon, Mississippi, Site 08/26/2014 B3.1(c)
LM 13-14 Aerial photography and mapping of the Gunnison, Colorado, Processing Site 09/09/2014 B3.2
LM 07-14 Vapor Intrusion Mitigation Pilot Study and Potential Full-Scale Sub-Slab Depressurization System Design/Build for Building 100 at the Pinellas County, Florida, Site in Largo, Florida 07/10/2014 B3.1, B6.1 and B6.2
LM 06-14 Install three groundwater monitoring wells at the Shoal, Nevada, Site 07/02/2014 B3.1(c)
LM 05-14 Storm Shelter Installation and Related Activities at the Weldon Spring, Missouri, Site 06/11/2014 B1.15 and B3.1
LM 04-14 Abandon five test holes and remove contaminated soils from the associated well pads at the Chariot, Alaska, Site 05/15/2014 B3.1 and B6.1
LM 01-14 Determination of Excess Real Property 05/01/2014 B1.36
LM 13-13 Bioremediation Injection and Related Activities at the Pinellas Site, Largo, Florida 05/28/2013 B3.1 and B6.1
LM 12-13 Road Maintenance on Roads Used to Access Groundwater Monitoring Wells South of the Tuba City, Arizona, Uranium Mill Tailing Remedial Action (UMTRA) Title I Ste 05/28/2013 B1.3

LM 01-13

Current and Future Actions Related to Installation, Sampling, Abandonment, and Repair of Monitoring Wells at the Pinellas County, Florida Site 03/06/2013 B1.3, B3.3, and B6.1
LM 12a-12 Additional Considerations Amendment to LM-12-12, Routine and Non-Routine Activities at the Grand Junction, Colorado, Office Site 03/25/2013 B1.11, B1.30, B1.31, B1.32, B1.33, and B5.1
LM 12-12 Routine and Non-Routine Activities at the Grand Junction, Colorado, Office Site 09/21/2012 B1.3, B1.4, B1.7,
B1.13, B1.15, B1.16,
B1.23, B1.24, B1.28,
B2.1, B2.2, B2.4,
B2.5, B3.1, B5.16, and B6.1
LM 11-12 Routine and Non-Routine Activities at the Grand Junction, Colorado, Office Site 11/02/2012 B1.3, B1.19,
and B5.16
LM 10-12 Groundwater Monitoring Well Installation at Bluewater, Site near Grants, New Mexico 07/19/2012 B3.1
LM 09-12 Surface Water and Groundwater Sampling Near the Naturita, Colorado, Processing Site 07/13/2012 B3.1
LM 08-12
Grazing Agreement Amendment, Acid Pond, Spook, Wyoming 09/12/2012 B1.24
LM 08-12 Acid Pond Property Disposition Near the Spook, Wyoming, Disposal Site 07/13/2012 B1.24 and B1.36
LM 07-12 Amendment Amendment to LM-07-12 for Fiber Optic Cable Trenching at the Westminster, Colorado, Office 04/30/2013 B4.7
LM 07-12  Building Space Modifications and Security Improvements, Westminster, Colorado, Office Location 06/07/2012 B1.3, B1.15, B1.24,
B2.1, and B2.2
LM 06-12 Routine Activities at L-Bar, New Mexico 05/21/2012 B1.3 and B3.1
LM 05-12
Obtain Access Agreement to Sample Homestake Mining Company Groundwater Monitoring Well
HMC-951 Amendment
10/30/2012 B3.1 and B1.24
LM 05-12 General Site Actions at Bluewater Site near Grants, New Mexico 05/16/2012 B1.3 and B3.1
LM 04-12 Asphalt Repair and Concrete Work Activities at the Grand Junction, Colorado, Disposal Site 05/18/2012 B1.3, B3.1
and B6.1
LM 03-12 Infrastructure Demolition at Weldon Spring, Missouri 05/31/2012 B1.3, B1.7, B1.15,
B1.23, B1.24, B1.26,
B1.36, B3.1, and B4.7.
LM 01-12 Routine Activities and Seismic Survey at Gnome-Coach, New Mexico, Site 02/09/2012 B1.3 and B3.1

LM NEPA determination tracking numbers on this webpage (above) are identified as LM document number-year (LM 00-00). LM NEPA determination forms posted through the link to the DOE website (below) use a different tracking number such as CX-009399.

Office of NEPA Policy and Compliance - All Categorical Exclusion Determinations: Legacy Management