California Air Resources Board 2004 Almanac (web) Table 5-72 Chapter 5 Sacramento Valley Formaldehyde Emissions Sacramento Valley - Formaldehyde Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 216 11% 1% Area-wide Sources 326 17% 2% On-Road Mobile 452 23% 2% Gasoline Vehicles 285 15% 1% Diesel Vehicles 167 9% 1% Other Mobile 935 48% 5% Natural Sources 0 0% 0% Total 1928 100% 10% Total Statewide 20087