California Air Resources Board 2004 Almanac (web) Chapter 2 2003 Statewide CO Emissions Table 2-17 CO Emissions (annual average) Emissions Source tons/day Percent Stationary Sources 386 3% Area-wide Sources 2129 15% On-Road Mobile 8757 61% Gasoline Vehicles 8616 60% Diesel Vehicles 141 1% Other Mobile 3158 22% Total Statewide 14429 100%