| Acronym | Definition |
|---|---|
| AAMP | Ambient Air Modeling Plan |
| AC | Hydrogen cyanide |
| AChE | Acetylcholinesterase |
| ACGIH | American Conference of Governmental Industrial Hygienists |
| AEGL | Acute Exposure Guideline Level |
| ATSDR | Agency for Toxic Substances and Disease Registry (of HHS) |
| AUES | American University Experimental Station |
| BMD | Benchmark Dose |
| BZ | 3-Quinuclidinyl benzilate |
| CA-REL | California EPA’s Reference Exposure Level |
| CAFS | Chemical Agent Filtration System |
| CalEPA | California Environmental Protection Agency |
| CAMEO | Computer-Aided Management of Emergency Operations |
| CDC | Centers for Disease Control and Prevention |
| CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act |
| CG | Carbonyl chloride (phosgene) |
| CIR | Critical Information Requirements |
| CK | Cyanogen chloride |
| COA | Course of Action |
| CONOPs | Concept of Operations |
| CSF | Oral/Cancer Slope Factor |
| CSM | Conceptual Site Model |
| CWA | Chemical Warfare Agent |
| CX | Phosgene oxime |
| DDOE | District of Columbia Department of the Environment |
| DEP | Department of Environmental Protection (local) |
| DHEC | Department of Health and Environmental Control (local) |
| DHS | Department of Homeland Security |
| DOD | Department of Defense |
| DOE | Department of Energy |
| DOI | Department of Interior |
| DOT | Department of Transportation |
| DP | Diphosgene |
| DU | Decontamination Unit |
| ECS | Engineering Control System |
| EOC | Emergency Operations Center |
| EPA | Environmental Protection Agency |
| ERPG | Emergency Response Planning Guideline |
| ES&H | Environmental Safety and Health |
| EU | Environmental Unit |
| FBI | Federal Bureau of Investigation |
| FEMA | Federal Emergency Management Agency |
| FGA | Fourth Generation Agent |
| FSLTT | Federal, state, local, tribal and territorial |
| FUDS | Formerly Used Defense Site |
| GA | Tabun |
| GB | Sarin |
| GD | Soman |
| GF | Cyclosarin |
| GPL | General Population Limit |
| HASP | Health and Safety Plan |
| HAZMAT | Hazardous material |
| HAZWOPER | Hazardous Waste Operations and Emergency Response Standard (29 CFR 1910.120) |
| HBESL | Health-Based Environmental Screening Level |
| HD | Sulfur mustard |
| HEAST | Health Effects Assessment Summary Table |
| HHS | Department of Health and Human Services |
| HI | Hazard Index |
| HN | Nitrogen mustard |
| HSPD | Homeland Security Presidential Directive |
| HSRP | Homeland Security Research Program |
| HVAC | Heating, Ventilation, and Air Conditioning System |
| IAB | Information Analysis Brief |
| IAP | Incident Action Plan |
| IC | Incident Commander |
| ICS | Incident Command System |
| IC/UC | Incident Command/Unified Command |
| IDLH | Immediately dangerous to life or health |
| IMAAC | Interagency Modeling and Atmospheric Assessment Center |
| IRIS | Integrated Risk Information System |
| IUPAC | International Union of Pure and Applied Chemistry |
| IUR | Inhalation Unit Risk |
| JFO | Joint Field Office |
| JIC | Joint Information Center |
| Kow | Octanol-water partition coefficient |
| L | Lewisite |
| LOAEL | Lowest observed adverse effect level |
| LOC | Level of Concern |
| µg/cm2 | Micrograms per square centimeter |
| µg/m3 | Micrograms per cubic meter |
| mg/kg-day | Milligrams per kilograms of body weight per day |
| mg/L | Milligrams per liter |
| mg/m3 | Milligrams per cubic meter |
| MCL | Maximum Contaminant Level |
| MRL | Minimum Risk Level |
| NAS | National Academy of Science |
| NIMS | National Incident Management System |
| NIOSH | National Institute for Occupational Safety and Health |
| NOAEL | No observed adverse effect level |
| NRC | National Research Council |
| NRF | National Response Framework |
| NRT | U.S. National Response Team |
| NSF | National Strike Force |
| NSTC | National Science and Technology Council |
| NTA | Non-Traditional Agent |
| OSHA | Occupational Safety and Health Administration |
| OSTP | Office of Science and Technology Policy |
| PAL | Provisional Advisory Level |
| PEL | Permissible Exposure Limits |
| PIO | Public Information Officer |
| POD | Point of Departure |
| POI | Point of Interest |
| PPB | Parts per billion |
| PPE | Personal protective equipment |
| PPM | Parts per million |
| PPRTV | Provisional Peer-Reviewed Toxicity Value |
| PS | Chloropicrin |
| QAPP | Quality Assurance Project Plan |
| QSAR | Quantitative Structure Activity Relationship |
| RAGS | Risk Assessment Guidance for Superfund |
| RAP | Remedial Action Plan |
| RBC | Risk Based Concentration |
| REL | Recommended Exposure Limit |
| RfC | Inhalation reference concentration |
| RfD | Oral reference dose |
| RI/FS | Remedial investigation/feasibility study |
| SAP | Sampling and Analysis Plan |
| SCBA | Self-contained breathing apparatus |
| SLTT | State, local, tribal and territorial |
| SSC | Science Support Coordinator |
| START | Superfund Technical Assessment and Response Team |
| STEL | Short-term Exposure Limit |
| STSC | Superfund Health Risk Technical Support Center |
| TEEL | Temporary Emergency Exposure Level |
| TIC | Toxic Industrial Chemical |
| TIM | Toxic Industrial Material |
| TLV | Threshold Limit Values |
| TSD | Technical Support Document |
| TWA | Time Weighted Average |
| UC | Unified Command |
| USACE | United States Army Corps of Engineers |
| USCG | United States Coast Guard |
| USDA | United States Department of Agriculture |
| USGS | United States Geological Survey |
| VX | O-Ethyl S-(2-diisopropylaminoethyl) methylphosphonothiolate |
| WMP | Waste Management Plan |
| WPL | Worker Population Limit |
| 2-PAM Cl | 2-pyridine aldoxime methyl chloride |
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