California Air Resources Board 2004 Almanac (web)			
Chapter 5	Top Ten Counties - Carbon Tetrachloride Emissions		Table 5-9
Carbon Tetrachloride			
County	Air Basin	tons/year	Percent
Contra Costa	San Francisco Bay Area	1	61%
Los Angeles	South Coast	1	21%
San Diego	San Diego	0	5%
San Bernardino	Mojave Desert	0	4%
Ventura	South Central Coast	0	2%
Sacramento	Sacramento Valley	0	2%
Alameda	San Francisco Bay Area	0	1%
Sonoma	San Francisco Bay Area	0	1%
Kern	Mojave Desert	0	1%
San Bernardino	South Coast	0	0%