Chapter 5 San Francisco Bay Area Table 5-37 San Francisco Bay Area - Chromium (Hexavalent) Emissions Source tons/year Percent Air Basin Percent State Stationary Sources < .01 4% 0% Area-wide Sources 0 0% 0% On-Road Mobile 0.02 22% 1% Gasoline Vehicles 0.02 21% 1% Diesel Vehicles < .01 0% 0% Other Mobile 0.08 75% 5% Gasoline Fuel 0.02 19% 1% Diesel Fuel < .01 1% 0% Other Fuel 0.06 54% 3% Natural Sources 0 0% 0% Total 0.11 100% 6% Total Statewide 1.74