Sacramento Valley - Formaldehyde Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 166 7% 1% Area-wide Sources 325 13% 1% On-Road Mobile 785 31% 3% Gasoline Vehicles 566 22% 2% Diesel Vehicles 220 9% 1% Other Mobile 1271 50% 5% Natural Sources 0 0% 0% Total 2548 100% 10% Total Statewide 26329