The National Environmental Policy Act (NEPA) 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 (EIS), Environmental Assessment (EA), and a Categorical Exclusion (CX) Determination. Categorical exclusions are classes of DOE actions that DOE/NNSA has 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 the applicable CX determinations involving classes of actions listed in Appendix B to Subpart D of DOE's Implementing Procedures, 10 CFR Part 1021.
For general comments or questions: Please send an email to NEPA.Comments@yfo.doe.gov c/o
Chloe
Costanzo
NEPA Compliance Officer,
NNSA YFO
Or via US mail to:
Chloe Costanzo
NEPA Compliance Officer,
NNSA
YFO
P.O. Box 2050,
Oak Ridge, TN 37831
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.
2025 CX Determinations
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Date |
Project Title |
|---|---|
|
NEPA 5198 - Joint Information Center Lease |
2024 CX Determinations
|
Date |
Project Title |
|---|---|
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NEPA 5092 - East End Substation Construction |
2023 CX Determinations
|
Date |
Project Title |
|---|---|
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NEPA 5087 - West End Production Change House |
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NEPA 5079 - Building 9706-02 Complex Disposition |
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NEPA 4818 Rev 3 - Building 9215, Direct Chip Melt (DCM) – Bottom Loading Furnaces |
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NEPA 5043 Elza Switchyard Disposition |
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NEPA 5056 - CRADA for CENTRUS UF6 Conversion Concept Development |
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NEPA 5060 - Building 9983 Demolitions |
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NEPA 4909 - Test and Demonstration Facility |
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NEPA 5075 – Building 9713-14 Disposition |
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Safety, Health, and Environmental Improvements for FY2024 & FY2025 |
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NEPA 5022 - Modular Salvage Operations |
2022 Umbrella CX Determinations (UCXDs)
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Date |
Project Title |
|---|---|
|
Y12-NEPA-001-RM, Rev 0, Routine Maintenance Actions performed at the Y-12 National Security Complex (Y-12), CY 2022 to CY 2024 |
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Y12-NEPA-002-D&D, Rev 0, Excess Facilities De-inventory, Deactivation, Decommissioning and Limited Pre-Demolitions Activities, CY 2022 to CY 2024 |
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Y12-NEPA-003-SB&E, Rev 0, Support Buildings for Temporary Housing and Storage, Building Modifications, and Machinery and Equipment Installations, CY 2022 to CY 2024 |
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Y12-NEPA-004-R&D, Rev 0, Analytical Laboratory and Research and Development (R&D) Activities Conducted by the Analytical Chemistry and Y-12 Development Organization, CY 2022 to CY 2024 |
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Y12-NEPA-005-SC&EM, Rev 0, Site Characterization and Environmental Monitoring Activities, CY 2022 to CY 2024 |
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Y12-NEPA-006-WM, Rev 0, Waste Management, Waste Minimization, Energy Conservation, Sustainability, and Pollution Prevention Activities, CY 2022 to CY 2024 |
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Y12-NEPA-007-Safety, Rev 0, Personnel Safety Enhancements and Safety Equipment Improvements at the Y-12 National Security Complex (Y-12), CY2022 to CY2024 |
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Y12-NEPA-008-Training, Rev 0, Routine Administrative Actions and Emergency Preparedness Training Exercises, Drills, and Simulations, CY2022 to CY2024 |
2022 CX Determinations
|
Date |
Project Title |
|---|---|
|
NEPA 5041 South Ridge Facility Dispositions |
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NEPA-5028, Use of Unmanned Aircraft Systems (UAS) at Y-12 National Security Complex, DOE Oak Ridge Reservation, and other NNSA and DOE owned or leased properties |
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NEPA 4834, rev 4, West End Protected Area Reduction (WEPAR) Project |
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NEPA 4201.25, Uranium Processing Facility (UPF), Security Portal 10 Demolition |
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SNL-NEPA-UASCUAS, Unmanned Aerial Systems (UAS) and Counter UAS (CUAS), Testing and Evaluation, External Department of Energy Sites |
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CRADA NFE-22-00001, Collaboration for Manufacturing Solutions and Material Applications |
2021 CX Determinations
|
Date |
Project Title |
|---|---|
|
NEPA 4201.22, Uranium Processing Facility (UPF), Security Portal Demolition |
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NEPA 4954, rev 1, Y-12 National Security Complex's Public Warning System |
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NEPA 4976, Aerojet Ordinance Tennessee Inc., Recycle Pilot Project |
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NEPA 4818, rev 2, Direct Chip Melt – Bottom Loading Furnace |
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NEPA 4624, rev 2, Electorefining Project (addendum) |
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NEPA 4955, Federal Building - Fuel Tank Demolition and Disposition Project |
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NEPA 4642, Calciner Project (addendum) |
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NEPA 4834, West End Protected Area Reduction (WEPAR) Project |
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NEPA 4953, Security Infrastructure Revitalization Program |
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NEPA 4951, Demolition of Buildings 9727-04, 9727-04A, 9409-34, and Nitrogen Tower |
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NEPA 4949, Manufacturing Sciences Corporation, Cold Hearth Furnace |
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|
NEPA 4954, Y-12 National Security Complex’s Public Warning Siren System |
2020 CX Determinations
|
Date |
Project Title |
|---|---|
|
NEPA 4914, Demolition of Building 9404-18 |
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|
NEPA 4909, Test and Demonstration Facility |
|
|
Property Transfer of the SSP-2A to the National Nuclear Security Administration (CX-ORR-24-001) |
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|
NEPA 4916, Demolition of Building 9204-04 Ancillary Facilities |
2019 CX Determinations
|
Date |
Project Title |
|---|---|
|
NEPA 4779, Building 9204-2 Annex Demolition Project |
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|
NEPA 4721, Y-12 Fire Station Construction Project |
|
|
Lease office space in the Oak Ridge Technical Center - Buildings 1060 and 1099 Commerce Park |
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NEPA 4886, Energy Savings Performance Contract, Phase III, Mod 4 |
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NEPA 4869, Demolition of 9204-04 Complex Ancillary Facilities |
2018 CX Determinations
|
Date |
Project Title |
|---|---|
|
NEPA 4834 rev 2, West End Protected Area Reduction (WEPAR) Project |
|
|
NEPA 4840, Demolition of Group #2 and #3 trailers |
|
|
NEPA 4728 rev. 1, Demolition of Building 9720-24 |
|
|
Property Transfer of the Y-12 West End Fuel Station, CX-ORR-18-001 |
2017 CX Determinations
|
Date |
Project Title |
|---|---|
|
NEPA 4822, Demolition of Building 9201-05 Annex |
|
|
NEPA 4782 and 4783 rev. 1, Demolition of Buildings 9111, 9112, and 9616-10 |
2016 CX Determinations
|
Date |
Project Title |
|---|---|
|
Building 9204-2 Annex Demolition Project at the Y-12 National Security Complex (Y-12) (NEPA #4779) |
|
|
NEPA 4752, Depleted Uranium Technology Testing for the Uranium Processing Facility (UPF) |
|
|
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 |
|---|---|
|
Y-12 Fire Station Construction Project (4721) |
|
|
Electro-Refining Project (4624 (Rev.1)) |
|
|
Nuclear Facilities Risk Reduction (NFRR) (4457 Rev. 1) |
2014 CX Determinations
|
Date |
Project Title |
|---|---|
|
There were no CX Determinations posted in 2014 |
|
2013 CX Determinations
|
Date |
Project Title |
|---|---|
|
Guard Tower Power and Fiber Reroute (4608) |
|
|
Disposition of Kerr Hollow Quarry Shredder Project (4607) |
|
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9831 Wall Construction Project (4606) |
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Development CONOPS Improvement Project (4604) |
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Enclosure Modification Project (4603) |
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9744 Utility Isolations Project (4602) |
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Line Yard Fence Project (4601) |
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9103 Second Floor Refurbishment (4600) |
2012 CX Determinations
|
Date |
Project Title |
|---|---|
|
Disposition Excess Equipment from Alpha 1 (4605) |
|
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Security Upgrades Project (4598) |
|
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Lithium Wet Chemistry Project (4597) |
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High Contamination Area (HCA) Cleanup Project (4596) |
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Coal Pile Basin Project (4595) |
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Duct Chase Sprinkler Replacement Project (4594) |
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Jack Case Showers Projects (4593) |
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Dry Air Glovebox Projects (4592) |
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Water Tanks Demolition and Deactivation (D&D) Projects (4589) |
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Dry Pipe Sprinkler Piping Replacement Projects (4588) |
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Sprinkler Head Replacement Projects (4586) |
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Californium Shuffler Removal Projects (4585) |
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Electric Discharge Machining (EDM) Projects (4584) |
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Direct Application of TiBor Coatings Projects (4583) |
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Coordinate Measuring Machine (CMM) Research Project (4582) |
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Unneeded Materials and Chemicals Clean-out Project (4581) |
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Protection Upgrades Project (4580) |
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Facilities Infrastructure & Services Unneeded Materials and Chemicals Disposition Project (4579) |
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Sustainable Environment Technologies (4578) |
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Lithium Isotope Separation & Enrichment Technologies (4577) |
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9983-CC Demolition Project (4574) |
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Cork Alternatives Project (4573) |
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Critical Nuclear Utilities Upgrade Project (CNUUP) (4572) |
2011 CX Determinations
|
Date |
Project Title |
|---|---|
|
Crane Removal Project (4568) |
|
|
MPLE Test Stand Replacement Project (4567) |
|
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Ash Removal Project (4566) |
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Waste Management Construction Support (4565) |
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Sort and Segregation Facility (4564) |
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UPF Mock Wall Project (4563) |
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Parts Washer Project (4560) |
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9404-10 Man Lifts and Pallet Jacks Project (4557) |
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TR-37 9404-3 IR Demolition Project (4556) |
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Roof Asset Management (4555) |
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West Tank Farm (WTF) Pipe Replacement (4553) |
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9404-2 X-Ray Replacement Project (4552) |
|
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9215 Office Refurbishment (4551) |
|
|
9215 Roofing Clean-up and Testing Project (4549) |
|
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Guard Tower and Station D&D Project (4548) |
|
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Vehicle Detection System (VDS) Project (4547) |
|
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NightStalker Infrastructure Reduction (IR) Project (4546) |
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Code 4 Armor TM Sample Fabrication and Testing (4545) |
|
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Rheocast Demolition Project (4544) |
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VTR Upgrade Project (4543) |
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Entry Equipment (4542) |
|
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9201-5N HVAC Replacement (4539) |
|
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9998 G-3 Clean-out and Machining Capability (4538) |
|
|
Portal 8 Inspection Enhancements (4537) |
|
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Portal 11 Access Control (4536) |
|
|
EF520 Roof Duct Rain Hood (4535) |
|
|
9201-5 Utilities Re-route (4534) |
|
|
UWB Tracking and Ident. Sys. (CRADA #2416-Z581-11) (4533) |
|
|
Tin Whisker Mitigation (CRADA #NFE-11-00011) (4532) |
|
|
Development Chemicals of Buildings 9292 (4531) |
|
|
Coal Storage Area Stabilization (4530) |
2010 CX Determinations
|
Date |
Project Title |
|---|---|
|
JIC Yard (4529) |
|
|
U-Mo Cladded Fuel Preparation Facility Upgrades (4528) |
|
|
Corridor Access and Controls (4527) |
|
|
QE Ovens and Chambers (4526) |
|
|
Raman Project (4525) |
|
|
Guard Shack Tear Down (4524) |
|
|
Portal 8 Standoff (4523) |
|
|
PRV Installation (4522) |
|
|
9625 Kathabar Demo (4521) |
|
|
X-Ray Room MOD (4520) |
|
|
MOMentum (4519) |
|
|
9204-2 Concrete Projects (4518) |
|
|
South Bend Lathe QE Operation (4517) |
|
|
Portal 24 Generator Upgrade (4516) |
|
|
Process Condensate Tank Upgrades (4515) |
|
|
RCRA Closure of Bldg. 9720-12 Container Storage Area (4514) |
|
|
H-Road Secondary Pathways (4513) |
|
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Plant Lab Capabilities (4512) |
|
|
Walk-In Hood Project (4511) |
|
|
Scarboro Fields Burn Site (4510) |
|
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Deluge Valve Replacement (4509) |
|
|
9212 Inspector Test Valve Modifications (4508) |
|
|
NDLGS System Installation (4507) |
|
|
Two Person Rule Project (4506) |
|
|
New Salvage Yard (NSY) Drum Disposal (4504) |
|
|
New Non SNM Door (4503) |
|
|
Office Trailers of ARRA Project (4502) |
|
|
C3I Deployment (4501) |
|
|
West End Tank Farm Piping Crossover (4500) |
|
|
East End Scales Project (4499) |
|
|
Life Center West Project (4498) |
|
|
Life Center East Project (4497) |
|
|
H-Road D&D Project (4496) |
|
|
Wachs Cutter Tooling Station (4495) |
|
|
Energy Savings Performance Contracts (4494) |
|
|
UMC Construction Waste (4493) |
|
|
Evaluation Project (4492) |
|
|
Compressed Gas Cylinders (4491) |
|
|
Clean Sweep Building Clean Out (4490) |
|
|
Building 9204-2E Vacuum System Upgrade (4489) |
|
|
Miller Picking Air Handling Unit (AHU) Replacement (4488) |
|
|
Chiller Booster Pumps (4487) |
|
|
MotoMesh Deployment Phase II (4486) |
DOE/NNSA NEPA websites
Y-12 Environmental Assessments
- DOE/EA-2252, Environmental Assessment for Off-Site Depleted Uranium Manufacturing, October, 2024
- DOE/EA-2252: Finding of No Significant Impact for the Environmental Assessment for Off-Site Depleted Uranium Manufacturing, November, 2024
- DOE/EA-2218, Environmental Assessment for Activities in Support of the Y-12 National Security Complex Materials Manufacturing Mission, January, 2024
- DOE/EA-2218: Finding of No Significant Impact, Environmental Assessment for Activities in Support of the Y-12 National Security Complex Materials Manufacturing Mission, January, 2024
- DOE/EA-2159: Finding of No Significant Impact, Environmental Assessment for the Offsite Housing of the the Y-12 Development Organization at 103 Palladium Way, Horizon Center Industrial Park, Oak Ridge, Tennessee, July 2021
- DOE/EA-2159, Environmental Assessment for the Offsite Housing of the the Y-12 Development Organization at 103 Palladium Way, Horizon Center Industrial Park, Oak Ridge, Tennessee, July 2021
- DOE/EA-2145: Finding of No Significant Impact, Environmental Assessment for the Lithium Processing Facility at the Y-12 National Security Complex, Oak Ridge, Tennessee, March 2021
- DOE/EA-2145, Environmental Assessment for the Lithium Processing Facility at the Y-12 National Security Complex, Oak Ridge, Tennessee, March 2021
- DOE/EA-2144: Finding of No Significant Impact for the Environmental Assessment For The Oak Ridge Enhanced Technology And Training Center, November 4, 2020
- DOE/EA-2144, Environmental Assessment for the Oak Ridge Enhanced Technology and Training Center
- Wetland Statement of Findings for the Oak Ridge Enhanced Technology And Training Center (ORETTC), November 2020
- DOE/EA-2014: Finding of No Significant Impact, Y-12 National Security Complex Emergency Operations Center; Oak Ridge, TN, October 26, 2015
- DOE/EA-2014: Final Environmental Assessment, Y-12 National Security Complex Emergency Operations Center; Oak Ridge, TN, September 2, 2015
Y-12 Supplemental Analyses
- DOE/EIS-0387-SA-01, Supplement Analysis for Site-Wide Environmental Impact Statement for the Y-12 National Security Complex (April 2016)
- FINAL - DOE/EIS-0387-SA-03, Supplement Analysis for Site-Wide Environmental Impact Statement for the Y-12 National Security Complex
- DOE/EIS-0387-SA-04, Final Supplement Analysis for the Final Site-Wide Environmental Impact Statement for the Y-12 National Security Complex, Earthquake Accident Analysis, June 2020
- DOE/EIS-0387-SA-04, Draft Supplement Analysis for the Final Site-Wide Environmental Impact Statement for the Y-12 National Security Complex, Earthquake Accident Analysis, April 2020
- 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)
Y-12 National Security Complex, Site Wide Environmental Impact Statement
- DOE/EIS-0387, Final Site-Wide Environmental Impact Statement for the Y-12 National Security Complex
- EIS-0387, Record of Decision for the Continued Operation of the Y-12 National Security Complex