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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -12D <br />Sample Type: Air <br />Sampling Date 7/22/04 2/14/05 10/3/05 11/17/06 3/13/07 8/20/07 1/29/08 7/29/08 1/23/09 7/15/09 3/2/10 <br />Monitoring and Field Parameters <br />Volatile Oraanic Compounds PPB (v/v <br />Freon 12 <br />Freon 114 <br />6.9 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <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 />Chloromethane <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />N <br />Vinyl Chloride <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <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 />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Chloroethane <br />3.4 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />NT <br />NT <br />T <br />NT <br />NT <br />NT <br />Freon 11 <br />Ethanol <br />Freon 113 <br />1,1-Dichloroethene <br />6.4 <br />NT <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br /><0.5 <br /><0.5 <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 />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Acetone <0.5 <0.5 <0.5 <0.5 NT NT NT NT NT NT N I <br />2 -Propanol NT NT NT NT NT NT NT NT NT NT NT <br />Carbon Disulfide <0.5 <0.5 <0.5 <0.5 NT NT NT NT NT NT NT <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 />1.6 <br /><1.0 <br /><1.0 <br />3.4 <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <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 />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 />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />1,-Dichloroet <br />2-Butanone (Methyl Ethyl Ketone) <br />NT <br />NT <br />NT <br />NT NT <br />NT <br />NT <br />N I <br />N I <br />N I N I <br />cis- 1,2-Dic oroethene <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 NT <br />NT <br />NT <br />NT <br />NT <br />NT NT <br />Tetra ydro uran <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />N <br />NT <br />NT NT <br />loroform <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 NT <br />NT <br />NT <br />NT <br />NT <br />NT NT <br />1,1,1 -Trichloroethane <br />2.8 <br /><0.5 <br /><0.5 <br /><0.5 NT <br />NT <br />NT <br />NT <br />NT- <br />NT N <br />