California Air Resources Board 2007 Almanac (web)							
Appendix E	"Riverside County, Salton Sea Air Basin"						Table E-53
Category	ROG	CO	NOX	SOX	PM10	PM2.5	NH3
Natural Sources Total	8	12	0	0	1	1	1
Biogenic Sources	7	0	0	0	0	0	0
Geogenic Sources	0	0	0	0	0	0	0
Wildfires	1	12	0	0	1	1	0