California Air Resources Board 2006 Almanac (web) Chapter 5 Sacramento Valley Table 5-70 Sacramento Valley - Chromium (Hexavalent) Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 0.02 29% 1% Area-wide Sources < .01 6% 0% On-Road Mobile < .01 12% 1% Gasoline Vehicles < .01 12% 1% Diesel Vehicles < .01 0% 0% Other Mobile 0.03 52% 2% Gasoline Fuel 0.02 25% 1% Diesel Fuel < .01 1% 0% Other Fuel 0.02 25% 1% Natural Sources 0 0% 0% Total 0.07 100% 4% Total Statewide 1.52