California Air Resources Board 2006 Almanac (web) Appendix C North Central Coast Table C_6 TAC Monterey San Benito Santa Cruz Acetaldehyde 124 17 65 Benzene 182 20 85 "1,3-Butadiene" 58 14 16 Carbon Tetrachloride 0 0 < .01 Chromium (Hexavalent) 0.01 < .01 < .01 para-DiChlorobenzene 28 4 17 Formaldehyde 287 35 126 Methylene Chloride 72 9 54 Perchloroethylene 91 10 81 Diesel PM 379 62 131