California Air Resources Board 2009 Almanac (web) Chapter 5 San Joaquin Valley Table 5-45 San Joaquin Valley - Acetaldehyde Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 72 5% 1% Area-wide Sources 164 10% 2% On-Road Mobile 639 40% 7% Gasoline Vehicles 81 5% 1% Diesel Vehicles 558 35% 6% Other Mobile 727 45% 8% Gasoline Fuel 76 5% 1% Diesel Fuel 525 33% 6% Other Fuel 127 8% 1% Natural Sources 0 0% 0% Total 1603 100% 18% Total Statewide 9103