California Air Resources Board 2004 Almanac (web) Chapter 5 South Coast Hexavalent Chromium Emissions Table 5-26 South Coast - Chromium (Hexavalent) Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 0.41 81% 24% Area-wide Sources 0.00 0% 0% On-Road Mobile 0.05 9% 3% Gasoline Vehicles 0.05 9% 3% Diesel Vehicles < .01 0% 0% Other Mobile 0.05 10% 3% Natural Sources 0.00 0% 0% Total 0.51 100% 30% Total Statewide 1.71