| AAPFCO |
Association of American Plant Food Control Officials |
| AAR |
Association of American Railroads |
| ADA |
American Dental Association |
| ADTV |
Annual Daily Traffic Volume |
| AEDT |
Aviation Environmental Design Tool |
| AERR |
Air Emissions Reporting Rule |
| AMoN |
Ammonia Monitoring Network |
| APU |
Auxiliary power unit |
| BAAQMD |
Bay Area Air Quality Management District |
| BACT |
Best Available Control Technology |
| BEIS |
Biogenics Emissions Inventory System |
| BELD |
Biogenic Emissions Landuse Dataset |
| BSP |
BlueSky Pipeline |
| BTEX |
Benzene, Toluene, Ethylbenzene, and Xylenes |
| C1 |
Category 1 (commercial marine vessels) |
| C2 |
Category 2 (commercial marine vessels) |
| C3 |
Category 3 (commercial marine vessels) |
| CAMD |
Clean Air Markets Division (of EPA Office of Air and Radiation) |
| CAP |
Criteria Air Pollutant |
| CAMx |
Comprehensive Air quality Model with extensions |
| CBM |
Coal bed methane |
| CBP |
County Business Patterns |
| CDB |
County Database |
| CDL |
Cropland Data Layer |
| CDM |
County Database Manager |
| CEC |
North American Commission for Environmental Cooperation |
| CEM |
Continuous Emissions Monitoring |
| CERR |
Consolidated Emissions Reporting Rule |
| CFL |
Compact Fluorescent |
| CFR |
Code of Federal Regulations |
| CH4 |
Methane |
| CMAQ |
Community Multiscale Air Quality Modeling System |
| CMU |
Carnegie Mellon University |
| CMV |
Commercial marine vessels |
| CNG |
Compressed natural gas |
| CO |
Carbon monoxide |
| CONUS |
Continental United States |
| CO2 |
Carbon dioxide |
| CSB |
Crop Sequence Boundaries |
| CSV |
Comma Separated Variable |
| CWD |
Coarse Woody Debris |
| DMV |
Department of Motor Vehicles |
| DOC |
Department of Commerce |
| DOI |
Department of the Interior |
| E10 |
10% ethanol gasoline |
| E85 |
85% ethanol gasoline |
| EF |
Emissions Factor |
| EGU |
Electric Generating Utility |
| EIS |
Emission Inventory System |
| EAF |
Electric arc furnace |
| EF |
Emissions Factor |
| EI |
Emissions Inventory |
| EIA |
Energy Information Administration |
| EIIP |
Emissions Inventory Improvement Program |
| ELVS |
End of Life Vehicle Solutions Corporation |
| EMFAC |
Emission FACtor (model) – for California |
| EMP |
Emissions Modeling Platform |
| EPA |
Environmental Protection Agency |
| EPIC |
Environmental Policy Integrated Climate |
| ERG |
Eastern Research Group |
| ERTAC |
Eastern Regional Technical Advisory Committee |
| FAA |
Federal Aviation Administration |
| FACTS |
Forest Service Activity Tracking System |
| FCCS |
Fuel Characteristic Classification System |
| FDID |
Fire Department Identifier |
| FEST-C |
Fertilizer Emission Scenario Tool for CMAQ |
| FEM |
Farm Emissions Model |
| FEMA |
Federal Emergency Management Agency |
| FETS |
Fire Emissions Tracking System |
| FHWA |
Federal Highway Administration |
| FDOT |
Florida Department of Transportation |
| FODR |
Fire Occurrence Data Records |
| FRA |
Federal Railroad Association |
| FWS |
United States Fish and Wildlife Service |
| FP2 |
Farm Practices Probability Tool |
| FRS |
Facility Registry System |
| FSRI |
Fire Safety Research Institute |
| GenTPro |
Generating Temporal Profiles |
| GHG |
Greenhouse gas |
| GHGI |
Inventory of U.S. Greenhouse Gas Emissions and Sinks |
| GHGRP |
Greenhouse Gas Reporting Program |
| GIS |
Geographic information systems |
| GPS |
Global Positioning System |
| GSE |
Ground support equipment |
| GUI |
Graphical User Interface |
| GVW |
Gross Vehicle Weight |
| GWVR |
Gross Weight Vehicle Rating |
| HAP |
Hazardous Air Pollutant |
| HCl |
Hydrogen chloride (hydrochloric acid) |
| Hg |
Mercury |
| HID |
High Impact Discharge |
| HMS |
Hazard Mapping System |
| HPMS |
Highway Performance Monitoring System |
| ICR |
Information collection request |
| ICS-209 |
Incident Command System Form 209 |
| I/M |
Inspection and maintenance |
| IMERC |
Interstate Mercury Education and Reduction Clearinghouse |
| InFORM |
Interagency Fire Occurrence Reporting |
| IPCC |
Intergovernmental Panel on Climate Change |
| IPM |
Integrated Planning Model |
| LADCO |
Lake Michigan Air Directors Consortium |
| LEV |
Low Emission Vehicle |
| LFG |
Landfill Gas |
| LLAF |
Low Load Adjustment Factor |
| LMOP |
Landfill Methane Outreach Program |
| LRTAP |
Long-range Transboundary Air Pollution |
| LTO |
Landing and takeoff |
| LPG |
Liquified Petroleum Gas |
| MACT |
Maximum Available Control Technology |
| MARAMA |
Mid-Atlantic Regional Air Management Association |
| MATS |
Mercury and Air Toxics Standards |
| MCIP |
Meteorology-Chemistry Interface Processor |
| MER |
Monthly Energy Review |
| MMGD |
Million Gallons per Day |
| MMT |
Manure management train |
| MOBILE6 |
Mobile Source Emission Factor Model, version 6 |
| MODIS |
Moderate Resolution Imaging Spectroradiometer |
| MOVES |
Motor Vehicle Emissions Simulator |
| MRI |
Midwest Research Institute |
| MSA |
Metropolitan Statistical Area |
| MSAT2 |
Mobile Source Air Toxics rule |
| MSDS |
Material Safety and Data Sheets |
| MSW |
Municipal Solid Waste |
| MW |
Megawatts |
| MWC |
Municipal waste combustors |
| NAA |
Nonattainment area |
| NAAQS |
National Ambient Air Quality Standards |
| NAEMS |
National Air Emissions Monitoring Study |
| NAHMS |
National Animal Health Monitoring System |
| NAICS |
North American Industry Classification System |
| NAPA |
National Asphalt Pavement Association |
| NAPAP |
National Acid Precipitation Assessment Program |
| NASS |
USDA National Agriculture Statistical Service |
| NATA |
National Air Toxics Assessment |
| NCD |
National County Database |
| NEC |
Not Elsewhere Classified |
| NEEDS |
National Electric Energy Data System (database) |
| NEI |
National Emissions Inventory |
| NEMA |
National Electrical Manufacturers Association |
| NESCAUM |
Northeast States for Coordinated Air Use Management |
| NESDIS |
National Environmental Satellite and Data Information Service |
| NEWMOA |
Northeast Waste Management Officials’ Association |
| NFDA |
National Funeral Directors Association |
| NFEI |
National Fire Emissions Inventory |
| NFIRS |
National Fire Incident Reporting System |
| NG |
Natural gas |
| NHANES |
National Health and Nutrition Examination Survey |
| NLCD |
National Land Cover Database |
| NLEV |
National Low Emissions Vehicle |
| NH3 |
Ammonia |
| NH4+ |
Ammonium |
| NIFC |
National Interagency Fire Center |
| NIST |
National Institute of Standards and Technology |
| NMHC |
Non-Methane Hydrocarbons |
| NMIM |
National Mobile Inventory Model |
| NMOG |
Non-Methane Organic Gases |
| NO |
Nitrous oxide |
| NO2 |
Nitrogen dioxide |
| NOAA |
National Oceanic and Atmospheric Administration |
| NOMAD |
Nonpoint Methods Advisory |
| NOx |
Nitrogen oxides |
| NRM |
National Resource Manager |
| NSCR |
Non-Selective Catalytic Reduction |
| O3 |
Ozone |
| OAQPS |
Office of Air Quality Standards and Planning (of EPA) |
| OEI |
Office of Environmental Information (of EPA) |
| OG Tool |
Oil and Gas Tool |
| ORD |
Office of Research and Development |
| ORIS |
Office of Regulatory Information Systems |
| OSAP |
Office of State Air Programs |
| OTAQ |
Office of Transportation and Air Quality (of EPA) |
| OTC |
Ozone Transport Commission |
| PADD |
Petroleum Administration for Defense Districts |
| PAH |
Polycyclic aromatic hydrocarbons |
| Pb |
Lead |
| PB |
Pile Burn |
| PCB |
Polychlorinated biphenyl |
| PE |
Precipitation-Evaporation |
| PFAS |
Per- and polyfluoroalkyl substances |
| PFC |
Portable Fuel Container |
| PLPA |
Pet Loss Professionals Alliance |
| PM |
Particulate matter |
| PM25-CON |
Condensable PM2.5 |
| PM25-FIL |
Filterable PM2.5 |
| PM25-PRI |
Primary PM2.5 (condensable plus filterable) |
| PM2.5 |
Particulate matter 2.5 microns or less in diameter, synonymous with PM25-PRI |
| PM10 |
Particular matter 10 microns or less in diameter, synonymous with PM10-PRI |
| PM10-FIL |
Filterable PM10 |
| PM10-PRI |
Primary PM10 (condensable plus filterable) |
| POM |
Polycyclic organic matter |
| POTW |
Publicly Owned Treatment Works |
| PSC |
Program system code (in EIS) |
| RECS |
Residential Energy Consumption Survey |
| RFG |
Reformulated gasoline |
| RHW |
Residential Household Waste |
| RPD |
Rate per distance |
| RPH |
Rate per Hour |
| RPHO |
Rate per Hour On |
| RPP |
Rate per profile |
| RPS |
Rate per Start |
| RPV |
Rate per vehicle |
| RVP |
Reid Vapor Pressure |
| RWC |
Residential Wood Combustion |
| Rx |
Prescribed (fire) |
| SCC |
Source classification code |
| SERA |
Smoke Emissions Reference Application |
| SEDS |
State Energy Data System |
| SF2/BSP |
SMARTFIRE version 2/BlueSky Pipeline |
| S/L/T |
State, local, and tribal (agencies) |
| SMARTFIRE |
Satellite Mapping Automated Reanalysis Tool for Fire Incident Reconciliation |
| SMOKE |
Sparse Matrix Operator Kernel Emissions |
| SO2 |
Sulfur dioxide |
| SO4 |
Sulfate |
| SPDIST |
Speed Distribution |
| STAGE |
Surface Tiled Aerosol Gaseous Exchange |
| TAF |
Terminal Area Forecasts |
| THC |
Total Hydrocarbons |
| TMAS |
Travel Monitoring Analysis System |
| TOG |
Total Organic Gases |
| TRC |
Thermostat Recycling Corporation |
| TRI |
Toxics Release Inventory |
| TSD |
Technical Support Document |
| UNEP |
United Nations Environment Programme |
| UNFCCC |
United Nations Framework Convention on Climate Change |
| USDA |
United States Department of Agriculture |
| USFS |
United States Forest Service |
| VCP |
Volatile Chemical Product |
| VMT |
Vehicle miles traveled |
| VOC |
Volatile organic compounds |
| USDA |
United States Department of Agriculture |
| USFA |
United States Fire Administration |
| USFS |
United States Forest Service |
| USGS |
United States Geological Survey |
| UST |
Underground Storage Tank |
| WebFIRE |
Factor Information Retrieval System |
| WF |
Wildfire |
| WFIGS |
Wildland Fire Interagency Geospatial Services |
| WLF |
Wildland fire |
| WONDER |
Wide-ranging Online Data for Epidemiologic Research |
| WESTAR |
Western States Air Resources Council |
| WRF |
Weather Research and Forecasting Model |
| WIU |
Wildland Urban Interface |