California Air Resources Board 2008 Almanac (web)							
Appendix E	"Nevada County, Mountain Counties Air Basin"						Table E-20
Category	ROG	CO	NOX	SOX	PM10	PM2.5	NH3
Natural Sources Total	36	7	0	0	1	1	0
Biogenic Sources	36	0	0	0	0	0	0
Geogenic Sources	0	0	0	0	0	0	0
Wildfires	1	7	0	0	1	1	0