California Air Resources Board 2004 Almanac (web) Table 5-48 Chapter 5 San Joaquin Valley Hexavalent Chromium Emissions San Joaquin Valley - Chromium (Hexavalent) Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 0.13 65% 7% Area-wide Sources 0.00 0% 0% On-Road Mobile 0.01 7% 1% Gasoline Vehicles 0.01 7% 1% Diesel Vehicles < .01 0% 0% Other Mobile 0.05 28% 3% Natural Sources 0.00 0% 0% Total 0.19 100% 11% Total Statewide 1.71