California Air Resources Board 2004 Almanac (web)								
Chapter 4	San Francisco Bay Area Directly Emitted PM2.5 Emission Trends				Table 4-15			
"Directly Emitted PM2.5 Emission Trends (tons/day, annual average)"								
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010
All Sources	93	90	90	91	84	84	87	87
Stationary Sources	26	20	14	12	14	12	13	13
Area-wide Sources	50	53	55	57	53	56	58	57
On-Road Mobile	5	7	9	9	7	6	7	7
   Gasoline Vehicles	3	3	2	3	3	3	4	5
   Diesel Vehicles	2	4	7	7	4	3	3	2
Other Mobile	11	11	11	13	10	10	10	9