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AMS: Air Management Service is Philadelphia's regulating agency on air quality issues and part of the city's Health Department
B20: Most common biodiesel blend, comprised of 20% biodiesel and 80% petrodiesel
B100: Pure biodiesel that is nontoxic and biodegredable
CARB: The California Air Resource Board
CMAQ: Congestion Mitigation and Air Quality is a federal program to reduce transportation emissions in regions that are not in attainment of the Clean Air Act.
CO: Carbon Monoxide
CNG: Compressed Natural Gas
DOC: Diesel Oxidation Catalyst
DPF: Diesel Particulate Filter
DVRPC: Delaware Valley Regional Planning Commission is the area's metropolitan planning organization
EPA: Environmental Protection Agency
HAP: Hazardous Air Pollutant
HC: Hydrocarbons are a precursor to ozone and a serious air pollutant. Emissions result from incomplete fuel combustion and fuel evaporation.
IRT: Idle Reduction Technologies
LNG: Liquified Natural Gas (commonly called propane)
MERCs: Mobile source Emission Reduction Credits
NMHC: Non-Methane Hydrocarbons
NOx: Nitrogen Oxides
P.A. DEP: Pennsylvania Department of Environmental Protection
PDD: Philadelphia Diesel Difference
PM: Particulate Matter
PM10: Particulate matter with a mass median aerodynamic diameter of less than 10 micrometers. They are among the smaller particles, suspended in the air and easily inhaled into the deep lungs. Also known as "course" particulates.
PM2.5: Particulate matter with a mass median aerodynamic diameter of less than 2.5 micrometers. Also known as "fine" particulates.
RFP: Request For Proposals (when an entity with funds asks that applications be submitted for consideration)
SCR: Selective Catalytic Reduction
ppm: parts per million
ULSD: Ultra -Low Sulfur Diesel
VOC: Volatile Organic Compounds
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COMMON
ACRONYMS
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