San Francisco Bay Area - Diesel Particulate Matter Emissions Source tons/year Percent Air Basin Percent State Stationary Sources 1 0% 0% Area-wide Sources 0 0% 0% On-Road Mobile 1067 25% 4% Gasoline Vehicles 0 0% 0% Diesel Vehicles 1067 25% 4% Other Mobile 3153 75% 13% Natural Sources 0 0% 0% Total 4221 100% 17% Total Statewide 24808