Table 4-42: Estimated National Emissions of Volatile Organic Compounds

Table 4-42: Estimated National Emissions of Volatile Organic Compounds

(Million short tons)

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  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

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.

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.

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.