Table 9.2 Major U.S. Air Pollutants(106 tons/yr) from various sources in 2003 CO NOr VOc PM25cPM10° Fuel combustion 0.5310.93 0.0 0.14 0.68 electric utilities Industrial fucl 1.38 2.22 2.78 17 0.15 0.31 combustion Other fuel combustion 3.00 0.60 0.73 0.88 0.43 0.46 Chemical and allied 0.33 0.330.10 0.22 0.02 0.05 product manufacturing Metals processing 1.420.290.090.07 0.03 0.14 Petroleum and 0.770.75 0 0.20 0.45 related industries Waste disposal and 1.85 0.030.14 0.43 0.36 0.39 recycling Highway vehicles 58.81 0.26 7.38 4.43 0.13 0.19 Off-highway 24.45 0.44 4.10 2.57 0.28 0.31 Miscellaneous 14.35 0.12 0.31 6.4 4.45 20.06 Total 1068915.97207316.06 6.19 23.04Table 9.2 Major U.S. Air Pollutants (106 tons/yr) from various sources in 2003