California Air Resources Board 2006 Almanac (web)											
Chapter 4	San Diego Air Basin 						Table 4-40				
"San Diego Air Basin  Emissions (tons/day, annual average)"											
Pollutant	1975	1980	1985	1990	1995	2000	2005	2010	2015	2020	
NOX	280	273	287	319	270	231	189	157	131	125	
ROG	439	437	413	343	267	226	186	173	168	170	
PM10	68	76	84	102	97	105	112	119	125	133	
PM25	29	31	30	35	33	36	38	40	42	45	
CO	3299	3030	2924	2458	1719	1279	938	742	610	539