Emission Inventories

An emission inventory is a compilation of all air pollution quantities entering the atmosphere from all sources in a geographical area for a time period. The emission inventory is an important planning tool in air quality management. A properly developed inventory provides information concerning source emissions and defines the location,

Transportation sources

Fuel combustion in stationary sources

Motor vehicles Off-highway fuel usage Aircraft Trains Vessels

Gasoline-handling evaporative losses

Residential fuel Commercial and institutional fuel Industrial fuel Steam electric power plant fuel

Area and point sources

Emissions from industrial process losses

Chemical process industries Food and agricultural industries Metallurgical industries Mineral product industries Petroleum refining industries

Onsite and municipal incineration Open burning

Solid waste disposal

Forest fires Structural fires Coal refuse burning Agricultural burning


FIG. 5.1.1 Source categories for emission inventories.

Sulfur dioxide emissions 30-

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