TAC Alpine Inyo Mono Acetaldehyde 15 19 50 Benzene 75 41 162 "1,3-Butadiene" 17 8 37 Carbon tetrachloride 0 0 0 Chromium (Hexavalent) 0.0001 0.0025 0.0228 para-Dichlorobenzene 0 < 1 < 1 Formaldehyde 49 41 129 Methylene Chloride < 1 2 < 1 Perchloroethylene 1 11 7 Diesel PM < 1 18 14