Appendix C Mojave Desert Table C_4 TAC Kern Los Angeles Riverside San Bernardino Acetaldehyde 112 61 9 159 Benzene 91 85 9 235 "1,3-Butadiene" 41 21 2 50 Carbon Tetrachloride 0.02 < .01 0.04 0.10 Chromium (Hexavalent) 0.29 0.02 < .01 0.01 para-DiChlorobenzene 6 19 1 23 Formaldehyde 349 162 18 485 Methylene Chloride 14 100 4 79 Perchloroethylene 14 53 5 112 Diesel PM 150 223 13 612