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0 0 • <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -7 <br />Sample Type: Air <br />Sampiinq Date 8/20/07 1/29/08 7/29/08 1/23/09 7/15/09 3/2/10 9/3/10 1/25/11 7/29/11 4/12/12 8/7/12 <br />Monitoring and Field Parameters <br />on <br />Volatile Organic Compounds PPB (v/v) <br />Freon 12 <br />Freon 114 <br />8 <br /><0.5 <br />130 <br />2.7 <br />79 <br />2.4 <br />150 <br />3.4 <br />170 <br />3.9 <br />110 <br />2.8 <br />120 <br />3.2 <br />79 <br />2.2 <br />47 <br /><2.0 <br />90 <br />2.6 <br />74 <br />2.3 <br />Chloromethane <br /><0.5 <br /><0.5 <br /><5.1 <br /><4.8 <br /><5.9 <br /><7. <br /><8.5 <br /><4.5 <br /><7.9 <br /><8.0 <br /><6.7 <br />Vinyl h ori a <br /><0.5 <br /><0.5 <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><2.0 <br /><0.80 <br /><1.7 <br />1,3 -Butadiene <br />NT <br />NT <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><2.0 <br /><0.80 <br /><1.7 <br />Bromomethane <br /><0.5 <br /><0.5 <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><2.0 <br /><8.0 <br /><17 <br />Chloroethane <br /><0.5 <br /><0.5 <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><7.9 <br /><3.2 <br /><6.7 <br />Freon 11 <br />2.8 <br />59 <br />44 <br />72 <br />87 <br />94 <br />92 <br />68 <br />48 <br />87 <br />74 <br />Ethanol <br />34 <br /><4.6 <br />21 <br /><4.8 <br /><5.9 <br /><7.0 <br /><8.5 <br />18 <br />870 E <br /><3.2 <br /><6.7 <br />Freon 113 <br />1,1-Dichloroethene <br /><0.5 <br /><0.5 <br />4 <br /><0.5 <br />2.8 <br />3.2 <br />5.7 <br /><1.2 <br />4.9 <br /><1.5 <br />6 <br /><1.8 <br />5 <br /><2.1 <br />3.3 <br /><1.1 <br />2.1 <br /><2.0 <br />3.8 <br /><0.80 <br />1.8 <br /><1.7 <br />Acetone <br />13 <br />6.8 <br />22 <br /><4.8 <br />7.7 <br /><7.0 <br />13 <br /><4.5 <br /><7.9 <br /><8.0 <br /><17 <br />2 -Propanol <br />NT <br />NT <br /><5.1 <br /><4.8 <br /><5.9 <br /><7.0 <br /><8.5 <br /><4.5 <br /><7.9 <br /><3.2 <br /><6.7 <br />Carbon Disulfide <br /><0.5 <br /><0.5 <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><7.9 <br /><3.2 <br /><6.7 <br />3-Chloropropene <br />NT <br />NT <br /><5.1 <br /><4.8 <br /><5.9 <br /><7.0 <br /><8.5 <br /><4.5 <br /><7.9 <br /><3.2 <br /><6.7 <br />Methylene Chloride <br /><1.0 <br /><1.0 <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><2.0 <br /><8.0 <br /><17 <br />Methyl tert-butyl ether <br />trans-1,2-Dichloroethene <br />NT <br />NT <br />NT <br />NT <br /><1.3 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.5 <br /><1.5 <br /><1.8 <br /><1.8 <br /><2.1 <br /><2.1 <br /><1.1 <br /><1.1 <br /><2.0 <br /><2.0 <br /><0.80 <br /><0.80 <br /><1.7 <br /><1.7 <br />Hexane <br /><1.0 <br /><1.0 <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><2.0 <br /><0.80 <br /><1.7 <br />1,1- ich oroet ane <br /><0.5 <br /><0.5 <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><2.0 <br /><0.80 <br /><1.7 <br />2-Butanone (Methyl Ethyl Ketone) <br />8.3 <br />3.2 <br />4.1 <br /><1.2 <br />1.8 <br /><1.8 <br />4.9 <br /><1.1 <br /><7.9 <br /><3.2 <br /><6.7 <br />cis-1.2-Dic oroet ene <br /><0.5 <br /><0.5 <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><2.0 <br /><0.80 <br /><1.7 <br />Tetrahydro uran <br /><0.5 <br />37 <br /><1.3 <br /><1. <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><2. <br /><0.80 <br /><1.7 <br />Chloroform <br /><0.5 <br /><0.5 <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><2.0 <br /><0.80 <br /><1.7 <br />1,1,1 -Trichloroethane <br /><0.5 <br /><0.5 <br /><1.3 <br /><1.2 <br /><1.5 <br /><1.8 <br /><2.1 <br /><1.1 <br /><2.0 <br /><0.80 <br /><1.7 <br />