California Air Resources Board 2004 Almanac (web)								
Chapter 4	San Joaquin Valley  Directly Emitted PM2.5 Emission Trends				Table 4-23			
"Directly Emitted PM2.5 Emission Trends (tons/day, annual average)"								
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010
All Sources	161	153	148	147	142	141	144	148
Stationary Sources	47	32	24	18	18	16	17	18
Area-wide Sources	100	103	106	109	110	112	115	119
On-Road Mobile	3	5	6	7	5	4	4	4
   Gasoline Vehicles	1	1	1	1	2	2	2	2
   Diesel Vehicles	2	4	6	6	4	3	2	2
Other Mobile	11	14	11	12	9	9	8	7