2002 Almanac (page 194) Table 4-33 Ozone Precursor Emission Trends and Forecasts - NOx Sacramento Valley Air Basin "NOx Emission Trends (tons/day, annual average)" Emission Source 1975 1980 1985 1990 1995 2000 2005 2010 All Sources 312 360 340 361 315 275 229 184 Stationary Sources 26 25 18 29 33 27 32 34 Area-wide Sources 4 5 5 6 7 7 8 9 On-Road Mobile 164 189 205 216 184 153 113 79 Gasoline Vehicles 137 149 147 137 120 90 61 42 Diesel Vehicles 27 40 59 79 64 63 52 37 Other Mobile 118 142 111 110 92 88 76 62