Table 4-44: Estimated National Emissions of Particulate Matter (PM-2.5)a
Table 4-44: Estimated National Emissions of Particulate Matter (PM-2.5)a
(Million short tons)
1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | (R) 2002 | (R) 2003 | (R) 2004 | (R) 2005 | (R) 2006 | 2007 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total | 7.56 | 7.32 | 7.20 | 7.15 | 7.54 | 6.93 | 6.73 | 6.26 | 6.26 | 6.40 | 6.50 | 6.22 | 3.102 | 3.095 | 3.089 | 3.082 | 2.998 | 2.958 |
Highway vehicles | 0.32 | 0.31 | 0.29 | 0.28 | 0.26 | 0.25 | 0.23 | 0.22 | 0.20 | 0.18 | 0.17 | 0.16 | 0.15 | 0.14 | 0.14 | 0.13 | 0.11 | 0.10 |
Off-Highway | 0.30 | 0.30 | 0.31 | 0.31 | 0.31 | 0.31 | 0.31 | 0.31 | 0.30 | 0.31 | 0.30 | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 | 0.26 | 0.25 |
Fuel combustion | 0.91 | 0.89 | 0.93 | 0.85 | 0.84 | 0.90 | 0.67 | 0.67 | 0.63 | 0.67 | 0.72 | 0.74 | 0.29 | 0.29 | 0.29 | 0.29 | 0.25 | 0.22 |
Industrial processesb | 0.56 | 0.57 | 0.58 | 0.50 | 0.50 | 0.50 | 0.37 | 0.38 | 0.39 | 0.30 | 0.31 | 0.32 | 0.36 | 0.36 | 0.36 | 0.36 | 0.36 | 0.35 |
Waste disposal and recycling | 0.23 | 0.24 | 0.24 | 0.29 | 0.27 | 0.25 | 0.43 | 0.44 | 0.46 | 0.44 | 0.33 | 0.33 | 0.22 | 0.22 | 0.22 | 0.22 | 0.22 | 0.22 |
Miscellaneous | 5.23 | 5.00 | 4.85 | 4.93 | 5.36 | 4.73 | 4.72 | 4.24 | 4.28 | 4.50 | 4.68 | 4.38 | 1.80 | 1.80 | 1.80 | 1.80 | 1.81 | 1.82 |
Key: R = revised.
a Particulate matter less than 2.5 microns in size. Data include PM without condensibles
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.
SOURCE
U.S. Environmental Protection Agency, Clearinghouse for Inventories and Emissions Factors (CHIEF), Current Emission Trends Summaries, available at http://www.epa.gov/ttn/chief/trends/index.html as of December 2008.