| AIM |
architectural and industrial maintenance |
| AIRS |
Aerometric Information Retrieval System |
| AIRS-AFS |
Aerometric Information Retrieval System Facility Subsystem |
| ALAPCO |
Association of Local Air Pollution Control Officers |
| AQA |
Air Quality Analysis (Workgroup within OTAG) |
| ASCII |
American Standard Code for Information Interchange |
| ASCT |
area source category |
| auto-GC |
automated gas chromatograph |
| BACT |
best available control technology |
| BEA |
Bureau of Economic Analysis |
| BEIS |
Biogenic Emissions Inventory System (1988) |
| BEIS2 |
Biogenic Emissions Inventory System (1995) |
| BELD |
Biogenic Emissions Landcover Database |
| CAA |
Clean Air Act |
| CAAA |
Clean Air Act Amendments of 1990 |
| CAPI |
Clean Air Power Initiative |
| CARB |
California Air Resources Board |
| CASTnet |
Clean Air Status and Trends Network (EPA) |
| CB-IV |
Carbon Bond-IV |
| CDT |
central daylight time |
| CE |
control efficiency |
| CEM |
continuous emissions monitoring |
| CEQ |
Council on Environmental Quality |
| CMSA |
consolidated metropolitan statistical area |
| CO |
carbon monoxide |
| CO2 |
carbon dioxide |
| CSUMM |
Colorado State University Mesoscale Model |
| CTG |
Control Technology Guidelines |
| CTO |
Control Technologies and Options (Workgroup within OTAG) |
| CVG |
conventional gasoline |
| DOE |
U.S. Department of Energy |
| DSM |
Demand Side Management |
| ECOS |
Environmental Council of the States |
| EDF |
Environmental Defense Fund |
| EE |
energy efficiency |
| EGAS |
Economic Growth Analysis System |
| EI |
Emissions Inventory (Workgroup within OTAG) |
| EIA |
Energy Information Administration |
| EIS |
Environmental Impact Statement |
| EMEFS |
Eulerian Model Evaluation and Field Study |
| EMS-95 |
Emissions Modeling System–1995 |
| EPA |
U.S. Environmental Protection Agency |
| EPS |
Emissions Preprocessor System |
| ERC |
emissions reductions credit |
| EST |
eastern standard time |
| FCE |
future control efficiency |
| FDDA |
four-dimensional data assimilation |
| FERC |
Federal Energy Regulatory Commission |
| FHWA |
Federal Highway Administration |
| GEMAP |
Geocoded Emissions Modeling and Projections System |
| g/bhp-h |
grams per brake horsepower-hour |
| GDP |
gross domestic product |
| g/mi |
grams per mile |
| HDV |
heavy-duty vehicle |
| hp |
horsepower |
| HPMS |
Highway Performance Monitoring System |
| HVLP |
high-volume, low-pressure (spray equipment) |
| HY-Split |
Hybrid Single-Particle Lagrangian Integrated Trajectories model |
| IC |
internal combustion |
| ICAC |
Institute for Clean Air Companies |
| I/M |
inspection and maintenance |
| IPM |
Integrated Planning Model |
| IMPROVE |
Interagency Monitoring Protected Visual Environments
(a collaborative visibility monitoring network operated by EPA and
several other agencies) |
| ISI |
Implementation Strategies and Issues (Workgroup within OTAG) |
| kg |
kilograms |
| km |
kilometers |
| km2 |
square kilometers |
| LADCO |
Lake Michigan Air Directors Consortium |
| LAER |
lowest achievable emissions rate |
| lb |
pound |
| LDGT |
light-duty gasoline truck |
| LDGV |
light-duty gasoline vehicle |
| LDT |
light-duty truck |
| LDV |
light-duty vehicle |
| LEV |
low-emission vehicle |
| LMOS |
Lake Michigan Ozone Study |
| m |
meters |
| MACT |
maximum achievable control technology |
| MARAMA |
Mid-Atlantic Regional Air Management Association |
| MMBtu |
millions of British thermal units |
| MOCA |
Modeling Ozone Cooperative |
| mph |
miles per hour |
| MSA |
metropolitan statistical area |
| MSL |
mean sea level |
| MTBE |
methyl tertiary butyl ether |
| MW |
megawatts |
| NAAQS |
National Ambient Air Quality Standards |
| NAMS |
National Air Monitoring Station |
| NAPAP |
National Acid Precipitation Assessment Program |
| NARSTO |
North American Regional Strategy for Tropospheric Ozone |
| NCAR |
National Center for Atmospheric Research |
| NEEDS |
National Electric Energy Data System |
| NEI |
National Emission Inventory |
| NERC |
North American Electric Reliability Council |
| NET |
National Emission Trends |
| NESCAUM |
Northeast States for Coordinated Air Use Management |
| NMHC |
non-methane hydrocarbon |
| NGM |
nested grid model |
| NH3 |
ammonia |
| NLEV |
National Low-Emission Vehicle Program |
| NO |
nitric oxide |
| NOAA |
National Oceanic and Atmospheric Administration |
| NOx |
nitrogen oxides |
| NOy |
totally reactive nitrogen |
| NOz |
products of NOx oxidation |
| NO2 |
nitrogen dioxide |
| NSPS |
New Source Performance Standards |
| NSR |
new source review |
| NWS |
National Weather Service |
| O3 |
ozone |
| OAQPS |
Office of Air Quality Planning and Standards |
| OBD |
on-board diagnostic |
| OMS |
Office of Mobile Sources |
| OMTR |
Open Market Trading Rule |
| OTAG |
Ozone Transport Assessment Group |
| OTC |
Ozone Transport Commission |
| OTC NOx MOU |
Ozone Transport Commission NOx Memorandum of Understanding |
| OTR |
Ozone Transport Region |
| PAMS |
Photochemical Analysis Monitoring System |
| PFC |
progressive flow control |
| PiG |
Plume-in-Grid |
| PM-10 |
particulate matter with an aerodynamic diameter less
than or equal to a nominal 10 micrometers |
| PIO |
public information office |
| ppb |
parts per billion |
| ppbC |
parts per billion measurement based on carbon content |
| ppm |
parts per million |
| psi |
pounds per square inch |
| QA |
quality assurance |
| r2 |
correlation coefficient |
| RACT |
reasonably available control technology |
| RAMS |
Regional Atmospheric Modeling System |
| RASS |
radar acoustic sounding systems |
| reg/neg |
regulation/negotiation |
| RFG |
reformulated gasoline |
| RFP |
reasonable further progress |
| r/min |
revolutions per minute |
| ROG |
reactive organic gases |
| ROM |
regional oxidant modeling |
| ROP |
rate of progress |
| RUSM |
Regional and Urban Scale Modeling (Workgroup within OTAG) |
| RVP |
Reid vapor pressure |
| SAIMM |
Systems Applications International Mesoscale Model |
| SCC |
source classification code |
| SCION |
Southeastern Consortium Intermediate Oxidant Network
(ambient monitoring network used as part of the Southern Oxidants
Study |
| SCF |
source conversion factor |
| SCR |
selective catalytic reduction |
| SIC |
standard industrial classification (code) |
| SIP |
State Implementation Plan |
| SLAMS |
State/Local Air Monitoring Station |
| SNCR |
selective noncatalytic reduction |
| SO2 |
sulfur dioxide |
| SOS |
Southern Oxidants Study |
| STAPPA |
State and Territorial Air Pollution Program Administrators |
| SUPROXA |
Super Regional Oxidant A (modeling domain) |
| SPECIATE |
EPA's Air Emissions Species Database |
| STID/CYID |
state ID/county ID |
| TDL |
tape data library |
| T/I |
Trading/Incentives (Workgroup within OTAG) |
| TLEV |
transitional low-emission vehicle |
| TOG |
total organic gas |
| TOMS |
Total Ozone Mapping Spectrometer |
| TPD |
tons per day |
| TPY |
tons per year |
| TSDF |
treatment, storage, and disposal facility |
| TTN |
Technology Transfer Network |
| TVA |
Tennessee Valley Authority |
| UAM-V |
Urban Airshed Model, Version V |
| UARG |
Utility Air Regulatory Group |
| USGS |
U.S. Geological Survey |
| UTM |
Universal Transverse Mercator |
| UV |
ultraviolet |
| VMT |
vehicle miles traveled |
| VNR |
video news release |
| VOC |
volatile organic compound |
| WDNR |
Wisconsin Department of Natural Resources |
