California Air Resources Board 2004 Almanac (web) Table 5-50 Chapter 5 San Joaquin Valley Formaldehyde Emissions San Joaquin Valley - Formaldehyde Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 540 18% 3% Area-wide Sources 227 8% 1% On-Road Mobile 767 25% 4% Gasoline Vehicles 429 14% 2% Diesel Vehicles 338 11% 2% Other Mobile 1493 49% 7% Natural Sources 0 0% 0% Total 3028 100% 15% Total Statewide 20087