California Air Resources Board 2009 Almanac (web)																									
Appendix C	South Coast		Table C_18																						
TAC	Los Angeles	Orange	Riverside	San Bernardino																					
Acetaldehyde	1174	376	214	258																					
Benzene	1761	597	302	346																					
"1,3-Butadiene"	369	119	77	108																					
Carbon Tetrachloride	0.11	1.33	0.09	0.06																					
Chromium (Hexavalent)	0.10	0.03	0.01	0.02																					
para-DiChlorobenzene	388	124	63	62																					
Formaldehyde	2870	947	502	604																					
Methylene Chloride	2039	965	234	278																					
Perchloroethylene	1276	433	216	226																					
Diesel PM	5163	1394	856	887