Appendix C	Air Quality and Health Risk		Table C-32										

KERN - Bakersfield - 5558 California Avenue - Annual Average Concentrations and Health Risks													
TAC	Conc.*/ Risk**	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001
Acetaldehyde	Annual Avg						0.49	1.59	1.22	1.27	1.69	1.19	1.27
	Health Risk						2	8	6	6	8	6	6
Benzene	Annual Avg						1.14	0.78	0.57	0.7	0.71	0.58	0.55
	Health Risk						106	72	53	65	66	54	51
"1,3-Butadiene"	Annual Avg						0.206	0.211	0.16	0.2	0.153	0.126	0.138
	Health Risk						78	79	60	75	58	47	52
Carbon Tetrachloride	Annual Avg						0.099	0.079				0.094	0.086
	Health Risk						26	21				25	23
Chromium (Hexavalent)	Annual Avg						0.26	0.13	0.1	0.1	0.1	0.1	
	Health Risk						39	19	15	15	16	16	
para-Dichlorobenzene	Annual Avg						0.11	0.11	0.12			0.11	0.13
	Health Risk						7	7	8			7	9
Formaldehyde	Annual Avg						1.92	3.48	3.12	2.99	3.67	2.79	3.44
	Health Risk						14	26	23	22	27	21	25
Methylene Chloride	Annual Avg						0.54	0.64	0.5		0.5	0.58	0.26
	Health Risk						2	2	2		2	2	0.9
Perchloroethylene	Annual Avg						0.092	0.119	0.039			0.065	0.058
	Health Risk						4	5	2			3	2
Diesel PM	Annual Avg	No Monitoring Data Available											
	Health Risk												
Total Health Risk		0	0	0	0	0	278	239	169	183	177	181	168.9

*    Concentrations for Chromium (Hexavalent) are expressed as ng/m3 and concentrations for Diesel PM are expressed as ug/m3.  Concentrations for all other TACs are expressed as parts per billion.													
**   Health Risk represents the number of excess cancer cases per million people based on a lifetime (70-year) exposure to the annual average concentration.  Total Health Risk represents only those compounds													
listed in this table and only those with data for that year.  There may be other significant compounds for which monitoring and/or health risk information are not available.