California Air Resources Board 2006 Almanac (web) Chapter 5 South Coast Table 5-26 South Coast - Chromium (Hexavalent) Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 0.06 35% 4% Area-wide Sources < .01 1% 0% On-Road Mobile 0.05 31% 3% Gasoline Vehicles 0.05 31% 3% Diesel Vehicles < .01 1% 0% Other Mobile 0.05 33% 4% Gasoline Fuel 0.05 31% 3% Diesel Fuel < .01 1% 0% Other Fuel < .01 1% 0% Natural Sources 0 0% 0% Total 0.16 100% 11% Total Statewide 1.52