Benzene			
County	Air Basin	tons/year	Percent
Los Angeles	South Coast	5914	19%
San Diego	San Diego	2267	7%
Orange	South Coast	2004	7%
Kern	San Joaquin Valley	1323	4%
Fresno	San Joaquin Valley	1102	4%
San Bernardino	South Coast	1037	3%
Santa Clara	San Francisco Bay Area	1015	3%
Sacramento	Sacramento Valley	925	3%
Alameda	San Francisco Bay Area	890	3%
Riverside	South Coast	757	2%