California Air Resources Board 2009 Almanac (web) Appendix C San Joaquin Valley Table C_16 TAC Fresno Kern Kings Madera Merced San Joaquin Stanislaus Tulare Acetaldehyde 320 360 136 82 143 258 155 148 Benzene 288 645 71 77 91 227 137 144 "1,3-Butadiene" 113 58 36 31 24 52 42 158 Carbon Tetrachloride < .01 < .01 0 0 0 0 0 0 Chromium (Hexavalent) 0.04 0.03 < .01 < .01 < .01 0.03 < .01 < .01 para-DiChlorobenzene 37 30 6 6 10 28 21 17 Formaldehyde 688 1301 365 196 302 565 334 315 Methylene Chloride 126 65 14 15 26 74 58 43 Perchloroethylene 170 96 22 25 36 117 89 62 Diesel PM 1159 1640 319 273 658 993 531 500