Chapter 5 San Diego Table 5-56 San Diego - Benzene Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 37 4% 0% Area-wide Sources 3 0% 0% On-Road Mobile 519 58% 4% Gasoline Vehicles 499 56% 4% Diesel Vehicles 20 2% 0% Other Mobile 339 38% 3% Gasoline Fuel 274 31% 2% Diesel Fuel 37 4% 0% Other Fuel 27 3% 0% Natural Sources 0 0% 0% Total 899 100% 7% Total Statewide 13183