Chapter 5 San Francisco Bay Area Table 5-34 San Francisco Bay Area - Benzene Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 160 8% 1% Area-wide Sources 34 2% 0% On-Road Mobile 1292 60% 10% Gasoline Vehicles 1243 58% 9% Diesel Vehicles 49 2% 0% Other Mobile 650 30% 5% Gasoline Fuel 476 22% 4% Diesel Fuel 111 5% 1% Other Fuel 63 3% 0% Natural Sources 0 0% 0% Total 2136 100% 16% Total Statewide 13183