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Air Quality Management in the United States
CTG
control technique guidelines
CTM
chemical transport model
3D
three-dimensional—three in space
4D
four-dimensional—three in space and one in time
DALYs
disability-adjusted life-years
DDT
dichlorodiphenyltrichloroethane
DOE
U.S. Department of Energy
ECO
employee commute options
EIIP
Emission Inventory Improvement Program
EKMA
empirical kinetic modeling approach
EPA
U.S. Environmental Protection Agency
ERC
emission-reduction credit
FACE
free air CO2 enrichment
FEM
federal equivalent methods
FHWA
U.S. Federal Highway Administration
FIA/FHM
Forest Inventory and Analysis and Forest Health Monitoring Program
FIP
federal implementation plan
FRM
federal reference methods
FTIR
Fourier transform infrared spectroscopy
FTP
federal test procedure (for vehicle emissions)
G/bhp-hr
grams per brake horsepower hour
g/gal
grams per gallon
g/kWh
grams per kilowatt hour
GACT
generally available control technology
GAO
U.S. General Accounting Office
GC
gas chromatography
GPMN
Gaseous Pollutant Monitoring Network (NPS)
GPMP
Gaseous Pollutant Monitoring Program (NPS)
GPRA
Government Performance and Results Act (1993)
GVWR
gross vehicle weight rating (weight of vehicle plus rated cargo capacity)