SIP: Glossary and Acronyms
Glossary
attainment demonstration: A plan that describes how a nonattainment area expects to meet the National Ambient Air Quality Standards (NAAQS) by the attainment deadline.
control strategy: Measures to deal with air pollution. Examples of control strategies include an emissions trading program or vehicle inspection and maintenance.
eight-hour ozone standard: The indicator of air quality acceptability as it pertains to ground-level ozone. The current threshold value for this standard is 0.075 ppm, measured as maximum daily eight-hour average concentrations. To attain the eight-hour ozone NAAQS, the three-year average of the annual fourth-highest daily maximum eight-hour ozone concentration must not exceed 0.075 ppm.
nonattainment area: A geographic area that fails to meet a NAAQS. An area must be officially designated by the EPA, under procedures set forth by the Federal Clean Air Act, in order to be classified in nonattainment.
offsets (pollution offsets, industrial growth offset): The reduction of current emissions at a rate equal to or greater than the amount of emissions expected to be produced in a new project. The offset ratio is determined by the ozone air quality classification in a particular area.
one-hour ozone standard: The former indicator of air quality acceptability as it pertains to ground-level ozone. This indicator involves taking an average one-hour concentration of pollutants. An area meets the one-hour ozone NAAQS if the monitored ozone level does not exceed the standard of 0.12 ppm more than three times over a consecutive three-year period.
Acronyms
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N | O | P | Q | R | S | T | U | V | W| X | Y | Z
ACT: Alternative Control Techniques
APA: Administrative Procedure Act
ASM: acceleration simulation mode
BACM: best available control measures
BACT: best available control technology
CAMx: Comprehensive Air Model with Extensions
CARB: California Air Resources Board
CFR: Code of Federal Regulations
CMSA: Consolidated Metropolitan Statistical Area
CNG: compressed natural gas
CO: carbon monoxide
COAST: Coastal Oxidant Assessment for Southeast Texas
CTG: Control Technique Guidelines
DERC: discrete emission reduction credit
DFW: Dallas-Fort Worth
DPS: Texas Department of Public Safety
DV: design value
EGF: electric generating facility
EGR: exhaust gas recirculation
EI: emissions inventory
ELP: El Paso
EPA: United States Environmental Protection Agency
EPN: emission point number
ERC: emission reduction credit
FACA: Federal Advisory Committee Act
FCAA: Federal Clean Air Act
FIP: federal implementation plan
FMVCP: Federal Motor Vehicle Control Program
FR: Federal Register
FTE: full-time equivalent employee
FTP: File Transfer Protocol
g/hp-hr: grams per horsepower-hour
GIS: geographic information system
g/mi: grams per mile
GVWR: gross vehicle weight rating
HAP: hazardous air pollutant
HB: House Bill
HC: hydrocarbon
HDD: heavy-duty diesel
HDDV: heavy-duty diesel vehicle
HDV: heavy-duty vehicle
HGB: Houston-Galveston-Brazoria
HOV: high-occupancy vehicle
hp: horsepower
HPMS: Highway Performance Monitoring System
kg/ha: kilograms per hectare
km: kilometer
LDT: light-duty truck
LED: low emission diesel
LEV: low emission vehicle
LNG: liquefied natural gas
LSG: low sulfur gasoline
m: meter
MACT: maximum achievable control technology
MMBtu: million British thermal units
MPA: metropolitan planning area
mph: miles per hour
MY: model year
NAAQS: National Ambient Air Quality Standards
NNSR: nonattainment new source review
NOx: nitrogen oxides
NOy: nitrogen species
NSR: new source review
NWS: National Weather Service
O3: ozone
OAQPS: Office of Air Quality Planning and Standards
OBD: on-board diagnostics
OSAT: Ozone Source Apportionment Technology
OTAQ: the EPA's Office of Transportation and Air Quality
PAMs: photochemical assessment monitoring sites
Pb: lead
PEI: periodic emissions inventory
PM: particulate matter
PM2.5: particulate matter smaller than 2.5 microns
PM10: particulate matter smaller than 10 microns
ppb: parts per billion
ppm: parts per million
ppmv: parts per million by volume
psi: pounds per square inch
psia: pounds per square inch absolute
QA/QC: quality assurance / quality control
RACT: reasonably available control technology
REMI: Regional Economic Modeling, Inc.
ROP: rate of progress
rpm: revolutions per minute
RVP: Reid vapor pressure
SAE: Society of Automotive Engineers
SB: Senate Bill
SCC: source classification code
SIC: Standard Industrial Classification
SIP: state implementation plan
SO2: sulfur dioxide
SOx: sulfur compounds
SOCMI: Synthetic Organic Chemical Manufacturing Industry
SULEV: super ultra low emission vehicle
TAC: Texas Administrative Code
TCAA: Texas Clean Air Act
TCEQ: Texas Commission on Environmental Quality
TCM: transportation control measure
TERP: Texas Emissions Reduction Plan
TIP: transportation implementation plan
TMCP: Texas Motorist's Choice Program
TNRCC: Texas Natural Resource Conservation Commission (the former name for the TCEQ)
tpd: tons per day
tpy: tons per year
TSP: total suspended particulate
TTI: Texas Transportation Institute
TxDOT: Texas Department of Transportation
VID: Vehicle Identification Database
VIN: vehicle identification number
VIR: Vehicle Inspection Report
VMAS: Vehicle Mass Analysis System
VMEP: Voluntary Mobile Source Emissions Reduction Program
VMT: vehicle miles traveled
VOC: volatile organic compounds
VRF: Vehicle Repair Form
WOE: weight of evidence
