Table 9.2 Major U.S. Air Pollutants(106 tons/yr) from various sources in 2003 CO NO VOC PM2.5PM10° Fuel combustion 0.5310.93 4.46 0.0 0.14 0.68 electric utilities Industrial fucl 1382222.780.17 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 0.267.38443 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 106.8915.9720.7316.06 6.19 23.04Table 9.2 Major U.S. Air Pollutants (106 tons/yr) from various sources in 2003