Chapter 4 San Francisco Bay Area Air Basin  Table 4-19 "Directly Emitted PM2.5 Emission Trends (tons/day, annual average)" Emission Source 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 All Sources 84 81 81 82 75 78 78 78 78 79 Stationary Sources 26 20 14 12 14 14 13 13 13 14 Area-wide Sources 41 44 46 48 44 47 49 49 49 50 On-Road Mobile 5 7 9 9 7 6 7 7 7 7 Gasoline Vehicles 3 3 2 3 3 3 4 5 5 6 Diesel Vehicles 2 4 7 7 4 3 3 2 2 1 Other Mobile 11 11 11 13 10 10 10 9 8 8 Gasoline Fuel 1 1 1 1 1 1 2 2 2 2 Diesel Fuel 9 8 9 10 8 8 8 6 5 5 Other Fuel 1 1 2 2 1 1 1 1 1 1