California Air Resources Board 2007 Almanac (web)			
Chapter 5	San Francisco Bay Area		Table 5-38
San Francisco Bay Area - Chromium (Hexavalent)			
Emissions Source	tons/year	Percent Air Basin	Percent State
Stationary Sources	< .01	6%	0%
Area-wide Sources	< .01	1%	0%
On-Road Mobile	0.03	32%	2%
   Gasoline Vehicles	0.02	31%	2%
   Diesel Vehicles	< .01	1%	0%
Other Mobile	0.05	62%	4%
   Gasoline Fuel	< .01	0%	0%
   Diesel Fuel	< .01	0%	0%
   Other Fuel	0.05	61%	4%
Natural Sources	0	0%	0%
Total	0.08	100%	7%
Total Statewide	1.17