Table 4-50: Estimated National Emissions of Sulfur Dioxide (Million short tons)
Friday, April 14, 2017
| 1970 | 1975 | 1980 | 1985 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | (R) 2012 | (R) 2013 | (R) 2014 | 2015 | 2016 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 17.55 | 16.35 | 15.93 | 15.03 | 14.81 | 14.57 | 14.55 | 13.12 | 11.70 | 10.32 | 9.09 | 7.73 | 6.48 | 6.48 | 6.48 | 4.80 | 3.80 | 2.71 |
| 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 | 0.29 | 0.25 | 0.21 | 0.17 | 0.11 | 0.04 | 0.04 | 0.04 | 0.04 | 0.03 | 0.03 | 0.03 | 0.03 | 0.02 | 0.02 |
| 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 | 0.73 | 0.65 | 0.58 | 0.51 | 0.40 | 0.29 | 0.20 | 0.21 | 0.12 | 0.13 | 0.13 | 0.13 | 0.08 | 0.05 | 0.03 |
| 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 | 12.70 | 12.59 | 12.72 | 11.54 | 10.37 | 9.15 | 7.97 | 6.75 | 5.52 | 5.52 | 5.52 | 4.01 | 3.04 | 1.97 |
| Industrial processesa | 7.09 | 4.68 | 3.77 | 2.43 | 1.85 | 1.67 | 1.71 | 1.65 | 1.61 | 1.59 | 1.37 | 1.42 | 1.42 | 1.32 | 1.38 | 1.42 | 1.05 | 1.03 | 1.01 | 0.99 | 0.91 | 0.84 | 0.76 | 0.70 | 0.64 | 0.58 | 0.58 | 0.58 | 0.50 | 0.50 | 0.50 |
| 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 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.02 | 0.04 | 0.04 | 0.04 |
| 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 | 0.13 | 0.14 | 0.15 | 0.13 | 0.13 | 0.13 | 0.14 | 0.15 | 0.16 | 0.20 | 0.20 | 0.20 | 0.15 | 0.15 | 0.15 |
KEY: R = revised.
aIndustrial processes consists of chemical and allied product manufacturing, metals processing, petroleum and related industries, and other industrial processes; solvent utilization; and storage and transport.
NOTE
Details may not add up to totals due to rounding in the source.
SOURCE
U.S. Environmental Protection Agency, Air Emissions Inventories, Air Pollutant Emissions Trends Data, available at https://www.epa.gov/air-emissions-inventories/air-pollutant-emissions-trends-data as of Mar. 3, 2017.