California Air Resources Board 2008 Almanac (web) Chapter 5 Statewide Table 5-21 Diesel PM Emissions Source tons/year Percent State Stationary Sources 1227 3% Area-wide Sources 0 0% On-Road Mobile 16936 40% Gasoline Vehicles 0 0% Diesel Vehicles 16936 40% Other Mobile 24163 57% Gasoline Fuel 0 0% Diesel Fuel 24163 57% Other Fuel 0 0% Natural Sources 0 0% Total Statewide 42326 100%