TRANSPORTATION ENERGY DATA BOOK: EDITION 22 - Center for ...

The transportation sector accounted for only 9% of the nation’s particulate matter (PM-2.5)
emissions in 1998. For details on the highway emissions of PM-2.5, see Table 4.11.
Table 4.10
Total National Emissions of Particulate Matter (PM-2.5), 1990–99
(million short tons)
Source category 1990 1995 1997 1998 1999
Highway vehicles
Off-highway
0.29
0.43
0.24
0.40
0.26
0.42
0.25
0.42
TRANSPORTATION ENERGY DATA BOOK: EDITION 22—2002
0.23
0.41
Percent
of total,
1999
3.4%
6.1%
Transportation total 0.72 0.64 0.69 0.67 0.64 9.4%
Stationary fuel combustion total 0.91 0.90 0.78 0.74 0.77 11.3%
Industrial processes total 0.56 0.50 0.38 0.39 0.39 5.7%
Waste disposal and recycling total 0.23 0.25 0.24 0.24 0.53 7.8%
Miscellaneous total 5.23 4.73 5.19 5.04 4.45 65.8%
Total of all sources 7.66 7.01 7.27 7.07 6.77 100.0%
Source:
U. S. Environmental Protection Agency, National Emission Inventory Air Pollutant Emission Trends
website www.epa.gov/ttn/chief/trends (Additional resources: www.epa.gov/oar/oaqps)
Note:
Detailed data tabulations for 2000 have not yet been released. Look for the 2000 Air Quality Trends Report on
the EPA website: http://www.epa.gov/airtrends/reports.html.
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