California Air Resources Board 2004 Almanac (web) Table C-1 Appendix C County Emissions for Ten Toxic Air Contaminants - Great Basin Valleys TAC Alpine Inyo Mono Acetaldehyde 7 15 31 Benzene 25 17 56 "1,3-Butadiene" 6 4 14 Carbon Tetrachloride 0.00 0.00 0.00 Chromium (Hexavalent) < .01 < .01 0.02 para-DiChlorobenzene < 1 < 1 < 1 Formaldehyde 24 28 73 Methylene Chloride < 1 2 1 Perchloroethylene < 1 4 3 Diesel PM 0 18 14