California Air Resources Board 2004 Almanac (web) Table 5-70 Chapter 5 Sacramento Valley Hexavalent Chromium Emissions Sacramento Valley - Chromium (Hexavalent) Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 0.05 55% 3% Area-wide Sources 0.00 0% 0% On-Road Mobile < .01 10% 0% Gasoline Vehicles < .01 9% 0% Diesel Vehicles < .01 0% 0% Other Mobile 0.03 35% 2% Natural Sources 0.00 0% 0% Total 0.08 100% 5% Total Statewide 1.71