San Diego - Formaldehyde Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 96 5% 0% Area-wide Sources 118 6% 0% On-Road Mobile 737 38% 3% Gasoline Vehicles 568 29% 2% Diesel Vehicles 169 9% 1% Other Mobile 989 51% 4% Natural Sources 0 0% 0% Total 1941 100% 7% Total Statewide 26329