Argonne Site Office CX Determinations

Determination Date Name of Action: Description Categorical Exclusion Number
9/16/2024 ASO-CX-409 Steam line proactive tree clearing/removal B 1.3 and B 1.5
9/10/2024 ASO-CX-408 Third ARM Mobile Facility (AMF3) Installation and Operation of RADAR Sites B 3.1, B 3.6, and B 3.8
5/24/2024 ASO-CX-407 Building 201 Storm Sewer Pipe and Culvert Replacement B 1.3
3/29/2024 ASO-CX-406 Third ARM Mobile Facility (AMF3) Installation and Operation of Supplemental Sites (Summerford, Sudduth, Courtland) B 3.1
2/27/2024 NEPA Categorical Exclusion: ASO-CX-405 Generic CX-Scaling Up Decarbonization and Sustainability B 3.1 and B 3.8
7/5/2023 ASO-CX-403 Vehicle Induced Resuspension of Surrogate Fallout B 3.11
5/22/2023 ASO-CX-402 Buildings 115 and 116 Decommissioning and Demolition for AU-2 Project B 1.23
4/24/2023 ASO-CX-401 Building 361 LINAC Decommissioning B 1.23
1/23/2023 ASO-CX-400 TCS Building 240 Facility Enhancements B1.31, B1.15
7/19/2021 ASO-CX-387 ESnet FIBER Install ARGONNE NATIONAL LABORATORY B 4.7
* 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