Appendix C Lake County Table C_2 TAC Lake Acetaldehyde 39 Benzene 76 "1,3-Butadiene" 19 Carbon Tetrachloride 0 Chromium (Hexavalent) < .01 para-DiChlorobenzene 3 Formaldehyde 89 Methylene Chloride 8 Perchloroethylene 13 Diesel PM 49