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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 />Freon 12 25 454 309 610 258 746 756 590 410 160 320 <br />Freon 114 2.8 47 40 106 47 80 111 <0.5 66 24 53 <br />1,3 -Butadiene NT NT NT NT NT NT NT NT NT NT NT <br />Bromomethane <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <br />.n c G cn c <n - <M. < . <0 5 <br />Freon 11 <br />22 <br />394 <br />338 <br />386 <br />184 <br />533 <br />505 <br />340 <br />220 <br />90 <br />180 <br />Ethanol <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Freon 113 <br />1.1 <br />12 <br />14 <br />22 <br />9.1 <br />13 <br />11 <br /><0.5 <br />7.2 <br />2.8 <br />6 <br />1,1-Dichloroethene <br />Acetone <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 /><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-Chloropropene <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 />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />trans-1,2-Dichloroethene <br />Hexane <br />- is oroetane <br />NT <br /><1.0 <br /><.5 <br />NT <br /><1.0 <br /><.5 <br />NT <br /><1.0 <br /><.5 <br />NT <br /><1.0 <br />< <br />NT <br /><1.0 <br /><.5 <br />NT <br /><1.0 <br /><.5 <br />NT <br /><1.0 <br /><.5 <br />NT <br /><1.0 <br /><.5 <br />NT <br /><1.0 <br /><. <br />NT <br /><1.0 <br /><, <br />NT <br /><1.0 <br /><.5 <br />Cyclohexane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <br /><0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <br />(1-1-To4rorhlnri ric <n JA; <n 5 <0-5 <0.5 <0.5 _._ <br />