Table 4-45:  Estimated National Emissions of Sulfur Dioxide (Million short tons),,,,,,,,,,,,,,,,,,,,,,,,,
,1970,1975,1980,1985,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,(R) 2002,(R) 2003,(R) 2004,(R) 2005,(R) 2006,2007,,,
TOTAL all sources,31.22,28.04,25.93,23.31,23.08,22.37,22.08,21.77,21.35,18.62,18.39,18.84,18.94,17.54,16.35,15.93,14.78,14.76,14.74,14.71,13.51,12.93,,,
Highway vehicles,0.27,0.33,0.39,0.46,0.50,0.47,0.44,0.40,0.37,0.34,0.30,0.30,0.30,0.30,0.26,0.25,0.25,0.21,0.18,0.15,0.12,0.09,,,
Off-Highway,0.28,0.30,0.32,0.35,0.37,0.38,0.39,0.39,0.40,0.41,0.41,0.42,0.43,0.48,0.44,0.44,0.51,0.51,0.51,0.52,0.46,0.40,,,
Fuel combustion,23.46,22.66,21.39,20.02,20.29,19.80,19.49,19.25,18.89,16.23,16.25,16.65,16.74,15.34,14.16,13.74,12.80,12.81,12.82,12.83,11.74,11.26,,,
Industrial processesa,7.09,4.68,3.77,2.43,1.86,1.68,1.72,1.65,1.62,1.59,1.37,1.43,1.43,1.33,1.38,1.43,1.06,1.06,1.06,1.06,1.05,1.03,,,
Waste disposal and recycling,0.01,0.05,0.03,0.03,0.04,0.04,0.04,0.07,0.06,0.05,0.03,0.03,0.03,0.03,0.03,0.04,0.03,0.03,0.03,0.03,0.03,0.03,,,
Miscellaneous,0.11,0.02,0.01,0.01,0.01,0.01,0.01,0.01,0.02,0.01,0.02,0.01,0.01,0.07,0.07,0.04,0.14,0.14,0.14,0.14,0.13,0.13,,,
Key: R = revised.,,,,,,,,,,,,,,,,,,,,,,,,,
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"a  Industrial processes consists of chemical and allied product manufacturing, metals processing, petroleum and related industries, and other industrial processes; solvent utilization; and storage and transport. ",,,,,,,,,,,,,,,,,,,,,,,,,
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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.",,,,,,,,,,,,,,,,,,,,,,,,,









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