California Air Resources Board 2006 Almanac (web)							
Appendix E	"Colusa County, Sacramento Valley Air Basin"						Table E-41
Category	ROG	CO	NOX	SOX	PM10	PM2.5	NH3
Natural Sources Total	23	15	1	0	2	1	1
Biogenic Sources	22	0	0	0	0	0	0
Geogenic Sources	0	0	0	0	0	0	1
Wildfires	1	15	1	0	2	1	0