ACL  Alternate Concentration Limit 
AEA  Atomic Energy Act 
AEC  U.S. Atomic Energy Commission
AIM  Archives and Information Management
ALC  Atomic Legacy Cabin
AML Abandoned Mine Lands Reclamation
AS&T  Applied Studies and Technology
BIA  U.S. Bureau of Indian Affairs 
BLM  U.S. Bureau of Land Management
CDPHE  Colorado Department of Public Health and Environment 
CERCLA  Comprehensive Environmental Response, Compensation, and Liability Act or Superfund Program
CFR  Code of Federal Regulations 
D&D  Decontamination and Decommissioning 
DOE  U.S. Department of Energy
DRUM  Defense-Related Uranium Mines
EA  Environmental Assessment
EC  Environmental Compliance
EEOIPCA  Energy Employees Occupational Illness Compensation Program
EIS  Environmental Impact Statement
EJ  Environmental Justice
EM  U.S. Department of Energy Office of Environmental Management
EMS  Environmental Management System
EPA  U.S. Environmental Protection Agency
EQuIS  Environmental Quality Information System 
FOIA  Freedom of Information Act 
FONSI  Finding of No Significant Impact 
FUSRAP  Formerly Utilized Sites Remedial Action Program 
GCAP  Groundwater Compliance Action Plan
GEMS  Geospatial Environmental Mapping System
GIS  Geographic Information System
HQ  Headquarters
IAEA  International Atomic Energy Agency
IC  Institutional Control OR Interpretive Center
LEED Leadership in Energy and Environmental Design
LM  U.S. Department of Energy Office of Legacy Management
LTS  Long-Term Stewardship 
LTS&M  Long-term surveillance and maintenance
LTSP  Long-Term Surveillance Plan
MAPR  Manhattan Project National Historical Park 
NEPA  National Environmental Policy Act 
NHP  National Historical Park
NLN  National Laboratory Network
NN  Navajo Nation
NPL  National Priorities List
NPS  National Park Service
NRC   U.S. Nuclear Regulatory Commission
NVOS  Nevada Offsites 
NWPA  Nuclear Waste Policy Act
OSHA  Occupational Safety and Health Administration 
PEIS  Programmatic Environmental Impact Statement
QA  Quality Assurance
QC  Quality Control 
RCRA  Resource Conservation and Recovery Act 
ROD  Record of Decision 
RRM  Residual Radioactive Material
SHPO  State Historic Preservation Officer
SOARS  System Operation and Analysis at Remote Sites
SOW  Statement of Work
STEM  Science, Technology, Engineering, and Mathematics
STGWG  State and Tribal Government Working Group  
THPO  Tribal Historic Preservation Officer
ULP  Uranium Leasing Program
UMTRA  Uranium Mill Tailings Remedial Action (Project)
UMTRCA  Uranium Mill Tailings Radiation Control Act
USACE  U.S. Army Corps of Engineers 
USBR  U.S. Bureau of Reclamation 
USC  United States Code
USGS  U.S. Geological Survey
V&V  Verification and Validation