California Air Resources Board 2006 Almanac (web)			
Chapter 5	San Francisco Bay Area		Table 5-34
San Francisco Bay Area - Benzene			
Emissions Source	tons/year	Percent Air Basin	Percent State
Stationary Sources	146	7%	1%
Area-wide Sources	38	2%	0%
On-Road Mobile	1202	60%	10%
   Gasoline Vehicles	1153	58%	9%
   Diesel Vehicles	48	2%	0%
Other Mobile	611	31%	5%
   Gasoline Fuel	437	22%	4%
   Diesel Fuel	113	6%	1%
   Other Fuel	62	3%	1%
Natural Sources	0	0%	0%
Total	1997	100%	16%
Total Statewide	12293