2003 Almanac (page 212)  Table 5-5  2002 Top Ten Counties:  Benzene			

Benzene			
County	Air Basin	tons/year	Percent
Los Angeles	South Coast	2628	19%
San Diego	San Diego	947	7%
Orange	South Coast	883	6%
Kern	San Joaquin Valley	821	6%
Santa Clara	San Francisco Bay Area	545	4%
Alameda	San Francisco Bay Area	438	3%
San Bernardino	South Coast	431	3%
Riverside	South Coast	403	3%
Sacramento	Sacramento Valley	372	3%
Contra Costa	San Francisco Bay Area	353	3%