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	2007
Acetaldehyde	Annual Avg	1.73	1.97	1.54	1.76	1.52	0.61	1.34	1.16	1.08	1.29	1	1.1	1.18	1.19	1.12	1.32	1.03	0.97
	Health Risk	8	10	7	9	7	3	6	6	5	6	5	5	6	6	5	6	5	5
Benzene	Annual Avg	2.57	2.14	1.71	1.5	1.58	1.31	0.93	0.85	0.86	0.85	0.71	0.608	0.625	0.565	0.461	0.478	0.41	0.375
	Health Risk	238	198	158	139	146	121	86	79	80	79	66	56	58	52	43	44	38	35
"1,3-Butadiene"	Annual Avg	0.412	0.341	0.32	0.392	0.343	0.31	0.262	0.234	0.245	0.225	0.183	0.174	0.172	0.117	0.107	0.101	0.085	0.092
	Health Risk	155	128	120	147	129	117	99	88	92	85	69	65	65	44	40	38	32	34
Carbon Tetrachloride	Annual Avg	0.131	0.128		0.106		0.1	0.078		0.114		0.094	0.087	0.091	0.094				
	Health Risk	34	34		28		26	21		30		25	23	24	25				
"Chromium, Hexavalent"	Annual Avg			0.27	0.22	0.21	0.29	0.13	0.12	0.11	0.11	0.13	0.13	0.101	0.094	0.088	0.091	0.079	0.069
	Health Risk			40	33	31	43	20	18	17	17	19	19	15	14	13	14	12	10
para-Dichlorobenzene	Annual Avg		0.14	0.14	0.14	0.13	0.14	0.12	0.14			0.12	0.14	0.16	0.16	0.16	0.15	0.15	
	Health Risk		9	9	9	8	9	8	9			8	10	10	10	10	10	10	
Formaldehyde	Annual Avg	2.18	2.07	1.65	2.08	2.18	2.93	3.38	2.89	2.64	3.2	2.55	3.18	3.5	3.15	2.69	2.86	2.67	2.62
	Health Risk	16	15	12	15	16	22	25	21	19	24	19	23	26	23	20	21	20	19
Methylene Chloride	Annual Avg	1.09	1.27	0.75	0.93	0.79	0.77	0.66	0.66	0.62	0.66	0.67	0.36	0.28	0.28	0.25	0.25	0.18	0.27
	Health Risk	4	4	3	3	3	3	2	2	2	2	2	1	1	1	<1	<1	<1	1
Perchloroethylene	Annual Avg	0.277	0.271	0.21	0.27	0.18	0.166	0.134	0.116	0.114		0.115	0.089	0.077	0.057	0.046	0.047	0.039	0.035
	Health Risk	11	11	8	11	7	7	5	5	5		5	4	3	2	2	2	2	1
Diesel PM3	Annual Avg	(3.0)					(2.2)					(1.8)							
	Health Risk	(900)					(660)					(540)							
Average State Risk	w/o Diesel PM	466	409	357	394	347	351	272	228	250	213	218	206	208	177	133	135	119	105
	w/ Diesel PM	(1366)					(1011)					(758)							


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