Chapter 5 San Joaquin Valley Table 5-50 San Joaquin Valley - Formaldehyde Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 984 28% 5% Area-wide Sources 229 6% 1% On-Road Mobile 732 21% 4% Gasoline Vehicles 396 11% 2% Diesel Vehicles 335 10% 2% Other Mobile 1574 45% 8% Gasoline Fuel 289 8% 1% Diesel Fuel 781 22% 4% Other Fuel 504 14% 2% Natural Sources 0 0% 0% Total 3519 100% 17% Total Statewide 20251