Categorical Exclusion (CX) Determinations

Pacific Northwest Site Office Categorical Exclusion (CX) Determinations

Determination Date Name of Action: Description Categorical Exclusion Number
4/6/2018 Generic CX Cultural and Biological Resource Protection B1.20
3/21/2018 Categorical Exclusion for Tribal Mitigation activities on the PDA B 1.20
12/20/2017 Generic Categorical Exclusion for Safety and Security Component Installation and Alteration B1.11, B2.2
12/20/2017 Generic Categorical Exclusion for Routine Maintenance B1.3, B1.4, B1.8, B1.16, B1.17
12/20/2017 Generic Categorical Exclusion for Site Characterization B3.1
12/11/2017 NEPA Categorical Exclusion: Generic Categorical Exclusion for Minor Road and Utility Alterations B1.3, B1.7, B1.13, B1.32, B4.7
12/8/2017 NEPA Categorical Exclusion: Generic Categorical Exclusion for Property Transfers B1.24
12/8/2017 NEPA Categorical Exclusion: Generic Categorical Exclusion for Microbiological and Biomedical Research B3.12
12/8/2017 NEPA Categorical Exclusion: Generic Categorical Exclusion for Small-Scale Research and development, Laboratory Operations, and Pilot Projects B3.6
12/8/2017 NEPA Categorical Exclusion: Generic Categorical Exclusion for Siting, Constructing, Modifying, and Operating Small-Scale Structures B1.15
* Implicit in CX determinations are the following:
  1. There are no extraordinary circumstances related to the proposed action that may affect the significance of the environmental effects of the proposed action.
  2. The proposed action is not “connected” to other actions with potentially significant impacts.
  3. The proposed action is not related to other proposed actions with cumulatively significant impacts.
  4. The proposed action is not precluded by 40 CFR 1506.1 or 10 CFR 1021.211.
  5. For CX determinations made prior to November 14, 2011, CX number definitions can be found at: http://energy.gov/sites/prod/files/nepapub/nepa_documents/RedDont/CXR-10CFRPart1021-Changes.pdf