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  2. COPERT - Wikipedia

    en.wikipedia.org/wiki/COPERT

    Calculation of Emissions from Road Transport; Compilation of an emission inventory; Calculation for different vehicle categories (passenger cars, light duty vehicles, heavy duty vehicles, mopeds and motorcycles) Pollutants covered: major air pollutants (CO, NOx, VOC, PM, NH 3, SO 2, heavy metals) greenhouse gas emissions (CO 2, N 2 O, CH 4)

  3. National Emissions Standards for Hazardous Air Pollutants

    en.wikipedia.org/wiki/National_Emissions...

    The National Emission Standards for Hazardous Air Pollutants (NESHAP) are air pollution standards issued by the United States Environmental Protection Agency (EPA). The standards, authorized by the Clean Air Act, are for pollutants not covered by the National Ambient Air Quality Standards (NAAQS) that may cause an increase in fatalities or in serious, irreversible, or incapacitating illness.

  4. AP 42 Compilation of Air Pollutant Emission Factors - Wikipedia

    en.wikipedia.org/wiki/AP_42_Compilation_of_Air...

    The fugitive air pollutant emission factors from relief valves, piping valves, open-ended piping lines or drains, piping flanges, sample connections, and seals on pump and compressor shafts are discussed and included in the report EPA-458/R-95-017, "Protocol for Equipment Leak Emission Estimates" which is included in the Chapter 5 section of AP ...

  5. Michigan Department of Environment, Great Lakes, and Energy

    en.wikipedia.org/wiki/Michigan_Department_of...

    Under Michigan Public Act 252 of 2014, the DEQ's budget for fiscal year 2015, which ran from October 1, 2014 to September 30, 2015, was about $502 million. [1] In April 2014, Governor Snyder called for this funding to increase the residential recycling rate in Michigan, which stood then at about 14.5 percent. [21]

  6. Air pollutant concentrations - Wikipedia

    en.wikipedia.org/wiki/Air_pollutant_concentrations

    If a gaseous emission sample is analyzed and found to contain water vapor and a pollutant concentration of say 40 ppmv, then 40 ppmv should be designated as the "wet basis" pollutant concentration. The following equation can be used to correct the measured "wet basis" concentration to a " dry basis " concentration:

  7. Useful conversions and formulas for air dispersion modeling

    en.wikipedia.org/wiki/Useful_conversions_and...

    If a gaseous emission sample is analyzed and found to contain water vapor and a pollutant concentration of say 40 ppmv, then 40 ppmv should be designated as the "wet basis" pollutant concentration. The following equation can be used to correct the measured "wet basis" concentration to a " dry basis " concentration: [ 3 ]

  8. Emission standard - Wikipedia

    en.wikipedia.org/wiki/Emission_standard

    An emission performance standard is a limit that sets thresholds above which a different type of vehicle emissions control technology might be needed. While emission performance standards have been used to dictate limits for conventional pollutants such as oxides of nitrogen and oxides of sulphur (NO x and SO x ), [ 3 ] this regulatory ...

  9. Emission inventory - Wikipedia

    en.wikipedia.org/wiki/Emission_inventory

    An emission inventory (or emissions inventory [1]) is an accounting of the amount of pollutants discharged into the atmosphere.An emission inventory usually contains the total emissions for one or more specific greenhouse gases or air pollutants, originating from all source categories in a certain geographical area and within a specified time span, usually a specific year.