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Estimated National Emissions of Particulate Matter (PM-10)

Notes: 

Details may not add up to totals due to rounding in the source.

Description: 

KEY: R = revised.

a Fine particulate matter less than 10 microns. Data include PM without condensable.

b Industrial processes consists of chemical and allied product manufacturing, metals processing, petroleum and related industries, other industrial processes; solvent utilization; and storage and transport.

c In 1985 there appears to be a spike in Miscellaneous emissions. This is likely due to a methodological change, and the EPA does not change historical data when it changes its methodology.

Source: 

U.S. Environmental Protection Agency, Air Emissions Inventories, Air Pollutant Emissions Trends Data, available at https://www.epa.gov/air-emissions-inventories/air-pollutant-emissions-tr... as of Mar. 3, 2017.