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TABLE 2 <br /> UNSATURATED ZONE SOIL GAS <br /> FOOTHILL SANITARY LANDFILL <br /> Highest Concentration <br /> Methane Number of Found VOC of Highest <br /> Soil Gas Well Content(%) Compounds PPB (v/v) Concentration <br /> SG-1 13.3 6 64703 Toluene <br /> SG-2 0 5 13 Dichlorodifluoromethane <br /> SG-3 0 13 25 Dichlorodifluoromethane <br /> SG-4 0 5 92 Dichlorodifluoromethane <br /> ' SG-5 0 3 4.9 Toluene <br /> SG-6 0 7 4.4 rDichlorodiflluoromethane <br /> SG-7 0 1 1.8 uene <br /> SG-8 0 5 5.0 ethyiene Chloride <br /> SG-9 0 5 2.3 Toluene <br /> SG-10 0 3 6.5 Methylene Chloride <br /> SG-11 0 5 19 Toluene <br /> Sampling Date: 10-1-2003 <br /> I <br /> N:\1 Foothill\LFGperimMonit\Soil-Gas-Results\FH-Tables-UnsatZoneMonit.xis Printed:6/21/2004 <br />