California Air Resources Board 2006 Almanac (web)			
Chapter 5	Table 5-9		Statewide
Carbon Tetrachloride			
County	Air Basin	tons/year	Percent
Contra Costa	San Francisco Bay Area	1	63%
San Diego	San Diego	0	8%
Los Angeles	South Coast	0	8%
Riverside	South Coast	0	6%
Ventura	South Central Coast	0	4%
Sacramento	Sacramento Valley	0	3%
San Bernardino	Mojave Desert	0	2%
Orange	South Coast	0	1%
Kern	Mojave Desert	0	1%
San Bernardino	South Coast	0	1%