California Air Resources Board 2009 Almanac (web)											
Chapter 4							Table 4-53				
"Sacramento Valley Air Basin Emissions (tons/day, annual average)"											
Pollutant	1975	1980	1985	1990	1995	2000	2005	2010	2015	2020	
NOX	334	351	342	381	353	318	292	249	198	161	
ROG	452	443	412	361	300	243	207	184	172	166	
PM10	199	205	212	226	215	222	226	232	237	242	
PM25	73	71	73	81	73	74	74	75	75	76	
SOX	25	23	26	30	9	6	5	3	4	4	
CO	3122	3120	2905	2581	1943	1528	1231	1041	917	845