California Air Resources Board 2009 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	9%	1%
Area-wide Sources	< .01	1%	0%
On-Road Mobile	0.03	51%	5%
   Gasoline Vehicles	0.03	50%	4%
   Diesel Vehicles	< .01	1%	0%
Other Mobile	0.02	38%	3%
   Gasoline Fuel	0.02	36%	3%
   Diesel Fuel	< .01	2%	0%
   Other Fuel	< .01	0%	0%
Natural Sources	0	0%	0%
Total	0.05	100%	9%
Total Statewide	0.61