California Air Resources Board 2006 Almanac (web)							
Appendix E	"Sierra County, Mountain Counties Air Basin"						Table E-23
Category	ROG	CO	NOX	SOX	PM10	PM2.5	NH3
Natural Sources Total	20	38	1	0	4	3	1
Biogenic Sources	17	0	0	0	0	0	0
Geogenic Sources	0	0	0	0	0	0	0
Wildfires	3	38	1	0	4	3	0