California Air Resources Board 2008 Almanac (web)							
Appendix E	"Placer County, Sacramento Valley Air Basin"						Table E-43
Category	ROG	CO	NOX	SOX	PM10	PM2.5	NH3
Natural Sources Total	7	0	0	0	0	0	0
Biogenic Sources	7	0	0	0	0	0	0
Geogenic Sources	0	0	0	0	0	0	0
Wildfires	0	0	0	0	0	0	0