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Estimated National Emissions of Particulate Matter (PM-2.5)
Details may not add up to totals due to rounding in the source.
KEY: R = revised.
(a) Particulate matter less than 2.5 microns in size. Data include PM without condensable.
(b) Industrial processes consists of chemical and allied product manufacturing, metals processing, petroleum and related industries, and other industrial processes; solvent utilization; and storage and transportation.
U.S. Environmental Protection Agency, Air Emissions Inventories, Air Pollutant Emissions Trends Data, available at as of May 23, 2018.