TRANSPORTATION ENERGY DATA BOOK: EDITION 20 - Center for ...

The transportation sector accounted for only 7% 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), 1990-98
(million short tons)
Percent
of total,
Source category 1990 1991 1992 1993 1994 1995 1996 1997 1998 1998
Highway vehicles 0.28 0.29 0.28 0.26 0.26 0.23
Off-highway 0.44 0.43 0.43 0.43 0.42 0.40
Transportation total 0.71 0.72 0.71
Stationary fuel combustion total 0.91 0.89 0.93
Industrial processes total 0.56 0.57 0.58
Waste disposal and recycling total 0.23 0.24 0.24
Miscellaneous total 5.55 5.31 5.19
Total of all sources 7.96 7.74 7.65
0.68 0.68
0.85 0.84
0.50 0.50
0.29 0.27
5.00 5.68
7.33 7.98
Source:
U.S. Environmental Protection Agency, National Air Pollutant Emission Trends, 1900-1998, 2000, pp. A-27-A-31, and annual.
(Additional resources: www.epa.gov/oar/oaqps)
0.63
0.90
0.50
0.25
4.90
7.18
0.22
0.41
0.63
0.86
0.38
0.23
6.09
8.20
0.21 0.20 2.4%
0.41 0.41 4.9%
0.62
0.79
0.39
0.24
6.45
8.48
0.61 7.3%
0.79 9.4%
0.39 4.7%
0.24 2.8%
6.35 75.7%
8.38 100.0%