California Air Resources Board 2006 Almanac (web) Appendix C Outer Continental Shelf Table C_9 TAC Statewide Acetaldehyde 18 Benzene 82 "1,3-Butadiene" 1 Carbon Tetrachloride 0 Chromium (Hexavalent) 0 para-DiChlorobenzene 0 Formaldehyde 73 Methylene Chloride 0 Perchloroethylene 5 Diesel PM 6108