California Air Resources Board 2004 Almanac (web)								
Chapter 4	Sacramento Valley Directly Emitted PM2.5  Emission Trends				Table 4-42			
"Directly Emitted PM2.5 Emission Trends (tons/day, annual average)"								
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010
All Sources	85	84	86	93	87	88	90	92
Stationary Sources	18	12	11	13	10	10	11	12
Area-wide Sources	58	62	65	68	68	70	72	73
On-Road Mobile	2	3	4	4	3	3	3	2
   Gasoline Vehicles	1	1	1	1	1	1	1	2
   Diesel Vehicles	1	2	3	3	2	2	1	1
Other Mobile	6	7	6	7	5	5	5	5