Chromium (Hexavalent)			
County	Air Basin	tons/year	Percent
Los Angeles	South Coast	0.54	22%
Kern	Mojave Desert	0.31	12%
San Diego	San Diego	0.22	9%
Solano	San Francisco Bay Area	0.18	7%
Riverside	South Coast	0.18	7%
San Joaquin	San Joaquin Valley	0.08	3%
Orange	South Coast	0.07	3%
San Bernardino	South Coast	0.07	3%
San Bernardino	Mojave Desert	0.07	3%
Lake	Lake County	0.06	3%