California Air Resources Board 2008 Almanac (web)																		
Annual Average Concentrations and Health Risks																		
TAC	Conc.1/Risk2	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Acetaldehyde	Annual Avg	1.27																
	Health Risk	6																
Benzene	Annual Avg	1.96	1.91															
	Health Risk	182	177															
"1,3-Butadiene"	Annual Avg	0.403	0.361															
	Health Risk	151	136															
Carbon Tetrachloride	Annual Avg	0.123	0.123															
	Health Risk	32	33															
"Chromium, Hexavalent"	Annual Avg																	
	Health Risk																	
para-Dichlorobenzene	Annual Avg																	
	Health Risk																	
Formaldehyde	Annual Avg	1.49																
	Health Risk	11	
Methylene Chloride	Annual Avg	0.53	0.57
	Health Risk	2	2
Perchloroethylene	Annual Avg	0.047	0.054
	Health Risk	2	2
Diesel PM	Annual Avg		
	Health Risk		
Total Health Risk		386	350


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Chico-Salem Street