California Air Resources Board 2007 Almanac (web)							
Appendix E	"San Diego County, San Diego Air Basin"						Table E-54
Category	ROG	CO	NOX	SOX	PM10	PM2.5	NH3
Natural Sources Total	76	138	4	1	14	12	2
Biogenic Sources	67	0	0	0	0	0	0
Geogenic Sources	0	0	0	0	0	0	0
Wildfires	9	138	4	1	14	12	1