California Air Resources Board 2008 Almanac (web)			
Chapter 5	Table 5-12		Statewide
Chromium (Hexavalent)			
County	Air Basin	tons/year	Percent
Kern	Mojave Desert	0.29	25%
San Diego	San Diego	0.23	20%
Kings	San Joaquin Valley	0.12	11%
Los Angeles	South Coast	0.07	6%
Imperial	Salton Sea	0.06	5%
Fresno	San Joaquin Valley	0.04	4%
Los Angeles	Mojave Desert	0.03	3%
Ventura	South Central Coast	0.03	2%
Kern	San Joaquin Valley	0.02	2%
Solano	San Francisco Bay Area	0.02	2%