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Table 4-50: Estimated National Emissions of Sulfur Dioxide (Million short tons)

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 19701975198019851990199119921993199419951996199719981999200020012002200320042005200620072008200920102011(R) 2012(R) 2013(R) 201420152016
TOTAL all sources31.2228.0425.9323.3123.0822.3722.0821.7721.3518.6218.3918.8418.9417.5516.3515.9315.0314.8114.5714.5513.1211.7010.329.097.736.486.486.484.803.802.71
Highway vehicles0.270.330.390.460.500.470.440.400.370.340.300.300.300.300.260.250.290.250.210.170.110.040.040.040.040.030.030.030.030.020.02
Off-Highway0.280.300.320.350.370.380.390.390.400.410.410.420.430.480.440.440.730.650.580.510.400.290.200.210.120.130.130.130.080.050.03
Fuel combustion23.4622.6621.3920.0220.2919.8019.4919.2518.8916.2316.2516.6516.7415.3414.1613.7412.8012.7012.5912.7211.5410.379.157.976.755.525.525.524.013.041.97
Industrial processesa7.094.683.772.431.851.671.711.651.611.591.371.421.421.321.381.421.051.031.010.990.910.840.760.700.640.580.580.580.500.500.50
Waste disposal and recycling0.010.050.030.030.040.040.040.070.060.050.030.030.030.030.030.030.030.030.030.030.030.020.020.020.020.020.020.020.040.040.04
Miscellaneous0.110.020.010.010.010.010.010.010.020.010.020.010.010.070.070.040.130.140.150.130.130.130.140.150.160.200.200.200.150.150.15

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-tr... as of Mar. 3, 2017.

Updated: Tuesday, May 23, 2017