California Air Resources Board 2004 Almanac (web)			Table 5-19
Chapter 5	Top Ten Counties - Perchloroethylene Emissions		
Perchloroethylene			
County	Air Basin	tons/year	Percent
Los Angeles	South Coast	1761	29%
San Diego	San Diego	618	10%
Orange	South Coast	556	9%
Sacramento	Sacramento Valley	336	6%
San Bernardino	South Coast	238	4%
Santa Clara	San Francisco Bay Area	223	4%
Alameda	San Francisco Bay Area	184	3%
Riverside	South Coast	183	3%
Fresno	San Joaquin Valley	130	2%
San Francisco	San Francisco Bay Area	115	2%