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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -6 <br />Sample Type: Air <br />Sampling Date 10/1/03 2/11/04 5/6/04 7/22/04 11/15/04 2/11/05 10/3/05 6/30/06 11/29/06 3/13/07 <br />Monitoring and Field Parameters <br />Volatile Organic Compounds PPB (v/v) <br />Freon 12 <br />Freon 114 <br />4.4 <br /><0.5 <br />266 <br />13 <br />179 <br />9.8 <br />345 <br />19 <br />265 <br />15 <br />416 <br />21 <br />434 <br />18 <br />730 <br /><0.5 <br />530 <br />22 <br />1500 <br />56 <br />Chloromethane <br /><0.5 <br /><0.5 <br /><0.5 <br />1.0 <br /><0.5 <br /><.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />Vinyl Chloride <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />1,3 -Butadiene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Bromomethane <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />Chloroethane <br /><0.5 <br /><11.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />Freon 11 <br />Ethanol <br />Freon 113 <br />1,1-Dichloroethene <br />1.8 <br />NT <br /><0.5 <br /><0.5 <br />89 <br />NT <br />7.8 <br /><0.5 <br />94 <br />NT <br />7.0 <br /><0.5 <br />107 <br />NT <br />10.6 <br /><0.5 <br />81 <br />NT <br />7.5 <br /><0.5 <br />130 <br />NT <br />11 <br /><0.5 <br />156 <br />NT <br />8.8 <br /><0.5 <br />210 <br />NT <br /><0.5 <br /><0.5 <br />190 <br />NT <br />12 <br /><0.5 <br />480 <br />NT <br />24 <br /><0.5 <br />Acetone <br />NT <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />2 -Propanol <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Carbon Disulfide <br />NT <br />NT <br />NT <br /><0.5 <br />NT <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />3-Chloropropene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Methylene Chloride <br />1.5" <br />6.9 <br /><1.0 <br />8.8 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br />Methyl tert-butyl ether <br />trans- 1,2-Dichloroethene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Hexane <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br />1,1-Dichloroethane <br /><0.5 <br /><0.5 <br />< .5 <br /><0.5 <br /><0.5 <br />< 0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />2-Butanone (Methvl Ethvl Ketone) <br />NT <br />NT <br />NT <br /><0.5 <br />NT <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />I etranyaroturan <u.5 <u.5 <u.5 <u.0 --u.01-u.01-U.0w.a w.a w.a <br />Chloroform <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <br />1,1,1 -Trichloroethane <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <br />