Chapter 4 South Coast Air Basin Table 4-11 "NOx Emission Trends (tons/day, annual average)" Emission Source 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 All Sources 1723 1641 1741 1588 1331 1195 970 763 600 515 Stationary Sources 327 291 254 185 120 105 71 68 68 70 Area-wide Sources 31 34 35 29 27 30 32 27 26 26 On-Road Mobile 1026 954 1094 1000 869 751 581 426 282 196 Gasoline Vehicles 921 768 788 700 594 432 270 186 129 92 Diesel Vehicles 105 186 306 299 275 319 311 239 153 103 Other Mobile 339 362 358 374 315 309 286 242 224 223 Gasoline Fuel 20 21 22 24 22 25 26 22 19 19 Diesel Fuel 292 313 307 315 257 247 225 188 170 166 Other Fuel 26 28 29 35 36 37 35 33 34 38