California Air Resources Board 2008 Almanac (web) Appendix C North Central Coast Table C_6 TAC Monterey San Benito Santa Cruz Acetaldehyde 119 36 75 Benzene 179 28 87 "1,3-Butadiene" 74 17 16 Carbon Tetrachloride 0 0 < .01 Chromium (Hexavalent) < .01 < .01 < .01 para-DiChlorobenzene 17 2 11 Formaldehyde 279 76 141 Methylene Chloride 73 9 56 Perchloroethylene 60 8 38 Diesel PM 346 180 127