California Air Resources Board 2004 Almanac (web) Chapter 5 South Coast Acetaldehyde Emissions Table 5-22 South Coast - Acetaldehyde Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 16 1% 0% Area-wide Sources 85 5% 1% On-Road Mobile 630 37% 8% Gasoline Vehicles 295 17% 4% Diesel Vehicles 336 20% 4% Other Mobile 973 57% 13% Natural Sources 0 0% 0% Total 1704 100% 23% Total Statewide 7507