California Air Resources Board 2006 Almanac (web) Chapter 5 Statewide Table 5-4 Benzene Emissions Source tons/year Percent State Stationary Sources 1658 13% Area-wide Sources 123 1% On-Road Mobile 6041 49% Gasoline Vehicles 5779 47% Diesel Vehicles 261 2% Other Mobile 4426 36% Gasoline Fuel 3484 28% Diesel Fuel 615 5% Other Fuel 327 3% Natural Sources 46 0% Total Statewide 12293 100%