California Air Resources Board 2004 Almanac (web)								
Chapter 4	Sacramento Valley NOx  Emission Trends				Table 4-37			
"NOx Emission Trends (tons/day, annual average)"								
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010
All Sources	329	355	351	383	337	294	247	202
Stationary Sources	36	30	29	43	45	39	40	42
Area-wide Sources	7	8	8	9	8	8	8	8
On-Road Mobile	179	194	208	216	182	147	113	80
   Gasoline Vehicles	147	148	143	132	112	78	54	38
   Diesel Vehicles	32	46	65	84	70	68	59	43
Other Mobile	107	124	107	115	102	99	86	72