Categorical Exclusion (CX) Determinations

Oak Ridge National Laboratory Site Office Categorical Exclusion (CX) Determinations

Determination Date Name of Action: Description Categorical Exclusion Number
2/28/2025 Demolition and Replacement of Bridges at Oak Ridge National Laboratory (ORNL) B1.15, B1.23
2/28/2025 Generic Categorical Exclusion: Construction, Extension, Connection, and Upgrades to Utilities Systems at Oak Ridge National Laboratory B1.4-B1.7, B1.13, B1.15, B1.23, B1.26, B1.31, B1.32, B1.33, B2.5, B3.9, B4.6-B4.13, B5.1, B5.2, B5.4, B5.5, B5.16, B5.19, B5.22, B5.23
4/30/2020 DOE Purchase of Building 2040 B1.24
7/26/2023 Transfer of Real Property Asset from the DOE Office of Science, Oak Ridge National Laboratory Site Office to the DOE National Nuclear Security Administration, Office of Secure Transportation A2; B1.24
3/7/2023 Bank Stabilization and Repair to Jones Island Road on the Clinch River (CX-ORR-26-001) B1.3
3/9/2023 Removal of A Fence Near Department of Energy Oak Ridge Reservation (ORR) Boundary Oak Ridge Tennessee Roane County Tennessee (Cx-Orr-27) (002) B1.23
11/29/2022 Transfer of the SSP-2A Parcel and Construction of an Electrical Substation (CX-ORR-25-001) B1.24; B4.11; B4.12
7/12/2022 Categorical Exclusion Determination for Research and Development Operation of the Material-Plasma Exposure eXperiment (MPEX) Target Station for Neutron-Irradiated Samples at Oak Ridge National Laboratory (4433X) B1.10; B3.6; B3.13
7/12/2022 Demolition of Excess Structures at Freels Bend in Oak Ridge, Tennessee (4647CXD) B1.23; B6.1
9/25/2020 Office of Secure Transportation Running Track / Physical Training Facility Construction CX-ORR-18-001 AMENDED B1.15, B2.1, B1.23, B2.3
* 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