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Table 4-43. Estimated National Emissions of Particulate Matter (PM-10)a (Million short tons)
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CSV
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| 0.44 |
0.47 |
0.40 |
0.36 |
0.36 |
0.36 |
0.37 |
0.37 |
0.34 |
0.35 |
0.34 |
0.32 |
0.32 |
0.29 |
0.28 |
0.27 |
0.26 |
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| 0.02 |
0.03 |
0.03 |
0.04 |
0.04 |
0.04 |
0.04 |
0.04 |
0.04 |
0.04 |
0.05 |
0.04 |
0.04 |
0.04 |
0.04 |
0.04 |
0.04 |
| 0.03 |
0.03 |
0.04 |
0.04 |
0.04 |
0.04 |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
0.05 |
0.03 |
0.03 |
0.03 |
0.03 |
| 0.01 |
0.01 |
0.02 |
R0.03 |
R0.03 |
R0.03 |
R0.04 |
R0.04 |
R0.04 |
R0.05 |
R0.05 |
R0.04 |
R0.04 |
R0.04 |
R0.04 |
R0.04 |
0.04 |
| R<0.01 |
0.03 |
R0.03 |
R0.03 |
0.04 |
0.04 |
0.04 |
0.04 |
0.04 |
R0.04 |
R0.04 |
R0.04 |
R0.04 |
R0.04 |
R0.04 |
R0.04 |
0.04 |
| R0.49 |
0.57 |
0.52 |
0.50 |
R0.51 |
0.51 |
R0.54 |
R0.54 |
0.51 |
R0.53 |
R0.53 |
0.49 |
0.49 |
0.44 |
0.43 |
0.42 |
0.41 |
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| N |
N |
N |
11.64 |
11.67 |
11.11 |
12.38 |
11.80 |
11.23 |
11.21 |
10.92 |
11.43 |
11.37 |
10.36 |
12.06 |
R12.53 |
12.67 |
| N |
N |
N |
5.08 |
5.26 |
5.53 |
5.90 |
5.77 |
2.25 |
2.40 |
2.42 |
2.46 |
2.54 |
2.41 |
2.39 |
R2.54 |
2.62 |
| R0.49 |
R0.57 |
R0.52 |
17.22 |
R17.44 |
17.15 |
R18.82 |
R18.11 |
R13.99 |
R14.14 |
R13.87 |
14.38 |
14.40 |
13.21 |
14.88 |
R15.49 |
15.70 |
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| 2.87 |
2.25 |
2.45 |
1.54 |
1.42 |
1.33 |
1.38 |
1.38 |
1.20 |
1.15 |
1.18 |
1.12 |
1.11 |
1.18 |
R1.17 |
R1.09 |
1.09 |
| 7.67 |
3.70 |
2.75 |
1.06 |
1.05 |
1.02 |
1.03 |
1.03 |
1.04 |
0.99 |
0.99 |
0.91 |
0.91 |
0.95 |
R0.68 |
R0.70 |
0.71 |
| 1.00 |
0.37 |
0.27 |
0.28 |
0.27 |
0.27 |
0.26 |
0.25 |
0.27 |
0.28 |
0.28 |
0.33 |
0.31 |
0.29 |
R0.30 |
R0.31 |
0.31 |
| 1.00 |
0.78 |
1.13 |
25.34 |
30.76 |
22.69 |
39.59 |
32.31 |
13.47 |
13.02 |
13.15 |
11.26 |
14.18 |
11.45 |
16.00 |
16.64 |
16.94 |
| 12.54 |
7.10 |
6.60 |
28.22 |
33.50 |
25.31 |
42.26 |
34.97 |
15.98 |
15.44 |
15.60 |
13.62 |
16.51 |
13.87 |
18.15 |
18.74 |
19.05 |
| 13.04 |
7.67 |
7.12 |
45.45 |
50.94 |
42.46 |
61.07 |
53.06 |
29.96 |
29.56 |
29.47 |
28.01 |
30.91 |
27.07 |
33.04 |
34.23 |
34.74 |
a Fine particulate matter less than 10 microns.
b Other off-road comprises nonroad gasoline- and diesel-powered recreational, airport service and railway maintenance vehicles, and recreational marine vessels.
c Industrial processes comprise chemical and allied product manufacturing, metals processing, petroleum and related industries, and other industrial processes; solvent utilization; and storage and transport.
d Miscellaneous comprises nonroad gasoline- and diesel-powered construction, industrial, lawn and garden, farm, light-commercial, logging vehicles and other non-road sources;
geogenic sources; agriculture and forestry, cooling towers, nontransportation-related fugitive dust, wildfires, managed burning, and other combustion sources that could not be accurately allocated to specific source categories.
KEY: N = data do not exist; R = revised.
NOTES: The methodologies used to estimate emissions constantly evolve and undergo major changes. These improved methods are often used to revise estimates for previous years. Therefore, some estimates in this table may not match estimates produced in previous reports, and some trends may not be consistent across years in which major methodology changes have occurred.Numbers may not add to totals due to rounding.
SOURCES: U.S. Environmental Protection Agency, National Air Pollutant Emission Trends: 1900-1998 (EPA-454/R-00-002) (Research Triangle Park, NC: March 2000), table A-5; also available atInternet site www.epa.gov/ttn/chief/trends98/emtrnd.html, as of Aug. 8, 2000.
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