Appendix E "Contra Costa County, San Francisco Bay Area Air Basin" Table E-57 Category ROG CO NOX SOX PM10 PM2.5 NH3 Natural Sources Total 11 0 0 0 0 0 0 Biogenic Sources 11 0 0 0 0 0 0 Geogenic Sources 0 0 0 0 0 0 0 Wildfires 0 0 0 0 0 0 0