Table 4-42:  Estimated National Emissions of Volatile Organic Compounds (Million short tons) ,,,,,,,,,,,,,,,,,,,,,
,1970,1975,1980,1985,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006
Total all sources,34.66,30.77,31.11,27.40,24.11,23.58,23.07,22.73,22.57,22.04,20.87,19.53,18.78,18.27,17.51,17.11,19.40,18.89,18.39,17.89,17.38
Highway vehicles,16.91,15.39,13.87,12.35,9.39,8.86,8.33,7.80,7.28,6.75,6.22,5.99,5.86,5.68,5.33,4.95,4.66,4.46,4.26,4.05,3.85
Off-Highway,1.62,1.92,2.19,2.44,2.66,2.71,2.75,2.80,2.85,2.89,2.94,2.75,2.67,2.68,2.64,2.62,2.62,2.55,2.47,2.40,2.32
Fuel combustion,0.72,0.66,1.05,1.57,1.01,1.08,1.12,0.99,0.99,1.07,1.12,1.12,1.12,1.15,1.18,1.19,1.47,1.49,1.52,1.54,1.57
Industrial processesa,12.33,11.10,12.10,9.50,9.01,9.18,9.37,9.53,9.69,9.71,8.14,8.34,7.88,7.49,7.21,7.40,7.09,7.04,6.99,6.94,6.89
Waste disposal and recycling,1.98,0.98,0.76,0.98,0.99,1.00,1.01,1.05,1.05,1.07,0.51,0.52,0.54,0.49,0.42,0.42,0.40,0.39,0.39,0.39,0.39
Miscellaneousv,1.10,0.72,1.13,0.57,1.06,0.76,0.49,0.56,0.72,0.55,1.94,0.82,0.72,0.79,0.73,0.53,3.17,2.97,2.77,2.57,2.37
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"a  Industrial processes comprises chemical and allied product manufacturing, metals processing, petroleum and related industries, and other industrial processes; and solvent utilization, storage, and transport.",,,,,,,,,,,,,,,,,,,,,
"b  Miscellaneous comprises nonroad gasoline- and diesel-powered construction, industrial, lawn and garden, farm, light-commercial, logging vehicles, and other nonroad sources; geogenic sources, catastrophic and accidental releases, health services, cooling towers, nontransportation-related fugitive dust, agriculture and forestry, structural fires, agriculture fires, slash/prescribed burning, forest wildfires,  and other combustion sources that could not be accurately allocated to specific source categories.",,,,,,,,,,,,,,,,,,,,,
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NOTE,,,,,,,,,,,,,,,,,,,,,
"Previous edition's data include all on road mobile sources and some nonroad mobile sources, since EPA changed the methodology to estimate emissions, the details of the data are not available, this data set only contains the on road mobile sources.",,,,,,,,,,,,,,,,,,,,,
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SOURCE ,,,,,,,,,,,,,,,,
"U.S. Environmental Protection Agency, Clearinghouse for Inventories and Emissions Factors (CHIEF), Current Emission Trends Summaries, Internet website http://www.epa.gov/ttn/chief/trends/index.html as of July 2007.",,,,,,,,,,,,,,,,