California Air Resources Board 2004 Almanac (web) Chapter 5 Statewide Hexavalent Chromium Emissions Table 5-10 Chromium (Hexavalent) Emissions Source tons/year Percent State Stationary Sources 0.8050 47% Area-wide Sources < .01 0% On-Road Mobile 0.1226 7% Gasoline Vehicles 0.1196 7% Diesel Vehicles < .01 0% Other Mobile 0.7796 46% Natural Sources < .01 0% Total Statewide 1.7042 100%