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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -3 <br />Sample Type: Air <br />Sampling Date 10/1/03 2/11/04 5/6/04 7/22/04 11/15/04 2/14/05 10/3/05 6/30/06 11/29/06 3/13/07 8/20/07 <br />Monitoring and Field Parameters <br />Volatile Organic Compounds PPB (v/v) <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Freon 12 <br />25 454 309 <br />610 <br />258 <br />746 <br />756 <br />590 <br />410 <br />160 320 <br />Freon 114 <br />2.8 47 40 <br />106 <br />47 <br />80 <br />111 <br /><0.5 <br />66 <br />24 53 <br /><0.5 <br />< .5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />.5 <0.5 <br />Vinyl Chloride <br /><0.5 <0.5 <0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <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 />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 /><0.5 <br />Chloroethane <br /><0.5 <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 />Freon 11 <br />Ethanol <br />Freon 113 <br />1,1-Dichloroethene <br />22 <br />NT <br />1.1 <br /><0.5 <br />394 <br />NT <br />12 <br /><0.5 <br />338 <br />NT <br />14 <br /><0.5 <br />386 <br />NT <br />22 <br /><0.5 <br />184 <br />NT <br />9.1 <br /><0.5 <br />533 <br />NT <br />13 <br /><0.5 <br />505 <br />NT <br />11 <br /><0.5 <br />340 <br />NT <br /><0.5 <br /><0.5 <br />220 <br />NT <br />7.2 <br /><0.5 <br />90 <br />NT <br />2.8 <br /><0.5 <br />180 <br />NT <br />6 <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 /><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 />NT <br />Carbon Disulfide <br />NT <br />NT <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 />3-Chioropropene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Methylene Chloride <br />1.0* <br />3.2 <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 />Methyl tert-butyl ether <br />trans- 1,2-Dichioroethene <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 />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 /><1.0 <br />_ <br />1,1-Dic loroethane <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 /><0.5 <br />2-Butanone (Methyl Ethyl Ketone) <br />cis- 1,2-Dich oroethene <br />NT <br /><0.5 <br />NT <br /><0.5 <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 /><0.5 <br /><0.5 <br /><0.5 <br />4.7 <br /><0.5 <br /><0.5 <br />4.2 <br /><0.5 <br />etra ydrofuran <br />< .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 /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />1,1,1 -Trichloroethane <br /><U.5 <br />4.2 <br />3.0 <br />5.6 <br />I.J <br />0 <br />2.6 <br /><0.5 <br />1.7 <br /><0.5 <br /><0.5 <br />