San Diego - Diesel Particulate Matter Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 68 4% 0% Area-wide Sources 0 0% 0% On-Road Mobile 462 26% 2% Gasoline Vehicles 0 0% 0% Diesel Vehicles 462 26% 2% Other Mobile 1218 70% 5% Natural Sources 0 0% 0% Total 1748 100% 7% Total Statewide 24808