California Air Resources Board 2006 Almanac (web) Chapter 5 Sacramento Valley Table 5-72 Sacramento Valley - Formaldehyde Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 188 10% 1% Area-wide Sources 340 18% 2% On-Road Mobile 387 21% 2% Gasoline Vehicles 230 13% 1% Diesel Vehicles 157 9% 1% Other Mobile 924 50% 5% Gasoline Fuel 290 16% 2% Diesel Fuel 443 24% 2% Other Fuel 191 10% 1% Natural Sources 0 0% 0% Total 1840 100% 10% Total Statewide 19078