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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -12S <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 Organic Compounds PPB (v/v) <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />NT <br />NT <br />NT <br />N I <br />N I <br />N I <br />Freon 12 <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 />Freon 114 <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 />loromet ane <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />- <br />NT <br />T <br />N <br />N <br />N <br />T <br />Vinyl ori e <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />T <br />T <br />NT <br />N <br />N <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 />nrrct Ana <br />1.1 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />NT <br />NT _ <br />T <br />NT <br />AITIT <br />T <br />N <br />AI <br />Freon 11 <br />Ethanol <br />Freon 113 <br /><0.5 <0.5 <0.5 <0.5 NT N I N I 1141 iv i ry i IV I <br />NT NT NT NT NT NT NT NT NT NT NT <br /><n s <0.5 <0.5 <0.5 NT NT NT NT NT NT NT <br />1, 1 -Dichloroethene <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />NT <br />NT <br />NT <br />N I <br />N I <br />N I <br />Acetone <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 />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 />r`nrhnn nice dfiria <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 />3-Chloropropene <br />NT <br />NT <br />NT <br />NT <br />NT <br />N I <br />N i <br />1141 <br />1141 <br />Iv l <br />IV I <br />Methylene Chloride <br /><1.0 <br /><1.0 <br /><1.0 <br />1.2 <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 />1,1- ichloroethane <br />< .5 <br /><0.5 <br /><0.5 <br /><0.5 <br />N <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />2-Butanone (Methyl Ethyl Ketone) <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />cis- 1,2-Dic loroet ene <br /><0. <br />_ <br />5 <br />0 <br />.- <br />. <br />wl <br />T <br />AIT <br />NT <br />AITIT <br />NT <br />N <br />AI <br />Ch oro orm < • <br />1 1 1 _Trlrh nrnathnna <br />