2003 Almanac (page 451)  Table C-15  County Emissions (tons/year) for Ten Toxic Air Contaminants by Air Basin				
South Coast Air Basin				

TAC	Los Angeles*	Orange	Riverside*	San Bernardino*
Acetaldehyde	923	327	187	196
Benzene	2628	883	403	431
"1,3-Butadiene"	509	159	87	97
Carbon Tetrachloride	1.83	0.08	0.02	< .01
Chromium (Hexavalent)	0.45	0.06	0.04	0.02
para-Dichlorobenzene	489	153	66	70
Formaldehyde	3173	1019	567	561
Methylene Chloride	2580	1021	253	456
Perchloroethylene	1783	625	173	199
Diesel PM	4563	1822	907	741

*  This Air Basin includes only a portion of this county.