TAC	Lassen	Modoc	Siskiyou
Acetaldehyde	89	24	109
Benzene	266	20	265
"1,3-Butadiene"	58	6	97
Carbon tetrachloride	0	0	0
Chromium (Hexavalent)	0.0021	0.0003	0.0028
para-Dichlorobenzene	2	< 1	2
Formaldehyde	221	40	244
Methylene Chloride	3	1	5
Perchloroethylene	20	6	25
Diesel PM	57	47	104