California Air Resources Board 2009 Almanac (web)			
Chapter 5	Table 5-20		Statewide
Perchloroethylene			
County	Air Basin	tons/year	Percent
Los Angeles	South Coast	1276	26%
Orange	South Coast	433	9%
San Diego	San Diego	422	8%
San Bernardino	South Coast	226	5%
Riverside	South Coast	216	4%
Sacramento	Sacramento Valley	192	4%
Santa Clara	San Francisco Bay Area	191	4%
Alameda	San Francisco Bay Area	184	4%
Fresno	San Joaquin Valley	170	3%
San Joaquin	San Joaquin Valley	117	2%