National Environmental Policy Act

The National Environmental Policy Act of 1969 requires all federal agencies to consider the environmental impacts of their proposed actions and the reasonable alternatives for implementing those actions during the decision making process. The Y-12 National Security Complex follows the Council on Environmental Quality regulations (40 CFR 1500-1508) and the Department of Energy’s Implementing Procedures (10 CFR 1021).

There are three types of NEPA documents, an Environmental Impact Statement, and Environmental Assessment, and a Categorical Exclusion Determination. Categorical exclusions are classes of DOE actions that DOE has, by regulation, determined do not individually or cumulatively have a significant effect on the environment and for which, therefore, neither an EIS nor an EA is normally required.

In accordance with DOE’s transparency and openness policy, Y-12 National Security Complex posts on this page documentation of CX determinations involving classes of actions listed in Appendix B to Subpart D of DOE’s Implementing Procedures, 10 CFR Part 1021.

For further information, please contact the NNSA’s Production Office, NEPA Compliance Officer Jack Zanger Jack Zanger@npo.doe.gov at 806-477-3638.

To view the CX determination form for a particular Y-12 project, select the year and click the date to the left of the project title.

2017 CX Determinations
Date Project Title
01/03/2018 NEPA 4822, Demolition of Building 9201-05 Annex
08/31/2017 NEPA 4782 and 4783 rev. 1, Demolition of Buildings 9111, 9112, and 9616-10
2016 CX Determinations
Date Project Title
11/15/2016 Building 9204-2 Annex Demolition Project at the Y-12 National Security Complex (Y-12) (NEPA #4779)
5/2/2016 NEPA 4752, Depleted Uranium Technology Testing for the Uranium Processing Facility (UPF)
4/19/2016 Construction of an Electrical Substation and the Transmission Line Feeds for the Uranium Processing Facility (UPF) at the Y-12 National Security Complex (Y-12) (NEPA #4201.16, rev. 1)
2015 CX Determinations
Date Project Title
9/03/2015 Y-12 Fire Station Construction Project (4721)
9/03/2015 Electro-Refining Project (4624 (Rev.1))
9/03/2015 Nuclear Facilities Risk Reduction (NFRR) (4457 Rev. 1)
2014 CX Determinations
There were no CX Determinations posted in 2014
2013 CX Determinations
Date Project Title
6/05/2013 Guard Tower Power and Fiber Reroute (4608)
6/05/2013 Disposition of Kerr Hollow Quarry Shredder Project (4607)
6/05/2013 9831 Wall Construction Project (4606)
6/05/2013 Development CONOPS Improvement Project (4604)
6/05/2013 Enclosure Modification Project (4603)
6/05/2013 9744 Utility Isolations Project (4602)
6/05/2013 Line Yard Fence Project (4601)
6/05/2013 9103 Second Floor Refurbishment (4600)
2012 CX Determinations
Date Project Title
11/21/2012 Disposition Excess Equipment from Alpha 1 (4605)
8/22/2012 Security Upgrades Project (4598)
9/5/2012 Lithium Wet Chemistry Project (4597)
6/25/2012 High Contamination Area (HCA) Cleanup Project (4596)
5/31/2012 Coal Pile Basin Project (4595)
5/31/2012 Duct Chase Sprinkler Replacement Project (4594)
5/29/2012 Jack Case Showers Projects (4593)
5/31/2012 Dry Air Glovebox Projects (4592)
5/29/2012 Water Tanks Demolition and Deactivation (D&D) Projects (4589)
4/30/2012 Dry Pipe Sprinkler Piping Replacement Projects (4588)
4/24/2012 Sprinkler Head Replacement Projects (4586)
4/12/2012 Californium Shuffler Removal Projects (4585)
4/11/2012 Electric Discharge Machining (EDM) Projects (4584)
3/12/2012 Direct Application of TiBor Coatings Projects (4583)
3/15/2012 Coordinate Measuring Machine (CMM) Research Project (4582)
3/15/2012 Unneeded Materials and Chemicals Clean-out Project (4581)
3/15/2012 Protection Upgrades Project (4580)
3/15/2012 Facilities Infrastructure & Services Unneeded Materials and Chemicals Disposition Project (4579)
2/13/2012 Sustainable Environment Technologies (4578)
2/9/2012 Lithium Isotope Separation & Enrichment Technologies (4577)
2/13/2012 9983-CC Demolition Project (4574)
2/06/2012 Cork Alternatives Project (4573)
2/23/2012 Critical Nuclear Utilities Upgrade Project (CNUUP) (4572)
2011 CX Determinations
Date Project Title
12/15/2011 Crane Removal Project (4568)
12/15/2011 MPLE Test Stand Replacement Project (4567)
12/15/2011 Ash Removal Project (4566)
12/15/2011 Waste Management Construction Support (4565)
12/15/2011 Sort and Segregation Facility (4564)
11/29/2011 UPF Mock Wall Project (4563)
11/29/2011 Parts Washer Project (4560)
10/24/2011 9404-10 Man Lifts and Pallet Jacks Project (4557)
10/24/2011 TR-37 9404-3 IR Demolition Project (4556)
09/24/2011 Roof Asset Management (4555)
03/17/2011 West Tank Farm (WTF) Pipe Replacement (4553)
07/27/2011 9404-2 X-Ray Replacement Project (4552)
07/27/2011 9215 Office Refurbishment (4551)
09/27/2011 9215 Roofing Clean-up and Testing Project (4549)
06/28/2011 Guard Tower and Station D&D Project (4548)
06/28/2011 Vehicle Detection System (VDS) Project (4547)
06/16/2011 NightStalker Infrastructure Reduction (IR) Project (4546)
05/17/2011 Code 4 Armor TM Sample Fabrication and Testing (4545)
05/17/2011 Rheocast Demolition Project (4544)
06/16/2011 VTR Upgrade Project (4543)
04/12/2011 Entry Equipment (4542)
03/28/2011 9201-5N HVAC Replacement (4539)
03/09/2011 9998 G-3 Clean-out and Machining Capability (4538)
03/17/2011 Portal 8 Inspection Enhancements (4537)
03/17/2011 Portal 11 Access Control (4536)
03/17/2011 EF520 Roof Duct Rain Hood (4535)
12/05/2011 9201-5 Utilities Re-route (4534)
03/17/2011 UWB Tracking and Ident. Sys. (CRADA #2416-Z581-11) (4533)
12/05/2011 Tin Whisker Mitigation (CRADA #NFE-11-00011) (4532)
01/25/2011 Development Chemicals of Buildings 9292 (4531)
01/11/2011 Coal Storage Area Stabilization (4530)
2010 CX Determinations
Date Project Title
12/16/2010 JIC Yard (4529)
12/16/2010 U-Mo Cladded Fuel Preparation Facility Upgrades (4528)
12/16/2010 Corridor Access and Controls (4527)
12/16/2010 QE Ovens and Chambers (4526)
12/16/2010 Raman Project (4525)
11/15/2010 Guard Shack Tear Down (4524)
11/15/2010 Portal 8 Standoff (4523)
09/30/2010 PRV Installation (4522)
09/30/2010 9625 Kathabar Demo (4521)
09/30/2010 X-Ray Room MOD (4520)
09/30/2010 MOMentum (4519)
09/07/2010 9204-2 Concrete Projects (4518)
09/30/2010 South Bend Lathe QE Operation (4517)
09/07/2010 Portal 24 Generator Upgrade (4516)
09/07/2010 Process Condensate Tank Upgrades (4515)
08/17/2010 RCRA Closure of Bldg. 9720-12 Container Storage Area (4514)
08/17/2010 H-Road Secondary Pathways (4513)
08/17/2010 Plant Lab Capabilities (4512)
08/09/2010 Walk-In Hood Project (4511)
05/10/2010 Scarboro Fields Burn Site (4510)
05/10/2010 Deluge Valve Replacement (4509)
03/19/2010 9212 Inspector Test Valve Modifications (4508)
03/19/2010 NDLGS System Installation (4507)
03/19/2010 Two Person Rule Project (4506)
03/15/2010 New Salvage Yard (NSY) Drum Disposal (4504)
03/15/2010 New Non SNM Door (4503)
03/19/2010 Office Trailers of ARRA Project (4502)
03/15/2010 C3I Deployment (4501)
02/25/2010 West End Tank Farm Piping Crossover (4500)
02/24/2010 East End Scales Project (4499)
02/16/2010 Life Center West Project (4498)
02/16/2010 Life Center East Project (4497)
08/17/2010 H-Road D&D Project (4496)
02/11/2010 Wachs Cutter Tooling Station (4495)
02/11/2010 Energy Savings Performance Contracts (4494)
02/11/2010 UMC Construction Waste (4493)
01/28/2010 Evaluation Project (4492)
01/05/2010 Compressed Gas Cylinders (4491)
01/05/2010 Clean Sweep Building Clean Out (4490)
01/05/2010 Building 9204-2E Vacuum System Upgrade (4489)
01/05/2010 Miller Picking Air Handling Unit (AHU) Replacement (4488)
01/05/2010 Chiller Booster Pumps (4487)
01/05/2010 MotoMesh Deployment Phase II (4486)


Related Links

  • DOE NEPA website
  • 81 FR 45138 , Amended Record of Decision for the Continued Operations of the Y-12 National Security Complex (FR, Vol. 81, No. 133, July 12, 2016)
  • EIS-0387, Record of Decision for the Continued Operation of the Y-12 National Security Complex
  • DOE/EIS-0387-SA-01, Supplement Analysis for Site-Wide Environmental Impact Statement for the Y-12 National Security Complex (April 2016)
  • DOE/EIS-0387, Final Site-Wide Environmental Impact Statement for the Y-12 National Security Complex
  • EA-2014: Finding of No Significant Impact, Y-12 National Security Complex Emergency Operations Center; Oak Ridge, TN, October 26, 2015
  • EA-2014: Final Environmental Assessment, Y-12 National Security Complex Emergency Operations Center; Oak Ridge, TN, September 2, 2015