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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -121 <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 />Monitorina and Field Parameters <br />Methane oncentratlon (percent) <br />0 <br />0 0 0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />Carbon Dioxide (percent) <br />NT <br />NT NT NT <br />0.5 0.2 <br />0 <br />0 <br />0 <br />NT 0.7 <br />xygen percent <br />N <br />N <br />2 .8 20.3 <br />20.6 <br />19.7 <br />20.1 <br />NT 20.6 <br />Volatile Oceanic Compounds PPB (v/v) <br />NT <br />NT <br />NT <br />Freon 12 <br />0.9 <0.5 <0.5 <0.5 NT NT NT NT <br />NT NT <br />NT <br />Freon 114 <br /><0.5 <0.5 <0.5 <0.5 NT NT NT NT <br />NT NT <br />NT <br />hloromethane <br /><0.5 <0.5 <O.5 <0.5 T NT NT NT <br />NTNT <br />Krr AIT <br />NT <br />A17 <br />1,3 -Butadiene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />N i <br />N l <br />N l <br />N l <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 />hloroet ane <br />1 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />N <br />T <br />NT <br />NT <br />NT <br />NT <br />Freon 11 <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 />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 /><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 />1,1-Dichloroethene <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 />Anatnna <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 NT NT NT NT NT N1 N1 N1 N 1 N 1 114 1 <br />r'nrhnn flim dfirla <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 />N i <br />NI <br />N l <br />1141 <br />iv 1 <br />Methylene Chloride <br /><1. <br />< <br />28 <br />1.3 <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-nirhinrnathanF± <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />T <br />NT <br />NT <br />NT <br />NT <br />NT <br />2-Butanone (Methyl Ethyl Ketone) NT NT NT NT NT NI N l N l 1141 fv1 1V I <br />cis-1.2-Dic loroethene <0.5 <0.5 <0.5 <0.5 N NT _ NT NT NT <br />NT <br />---Zh-l-oroform <u.5 <u.o <u.o U. Z) 1141 141 IY I IY I,.. . <br />4_Trirhlnrnathana 1.3 <0.5 <0.5 <0.5 NT NT NT NT N NT T <br />