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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br /> UNSATURATED ZONE SOIL GAS <br /> HARNEY LANE SANITARY LANDFILL <br /> GW-10D <br /> Sample Type:Air <br /> Sampling Date 1/28/10 7/19/10 1/24/11 7/28/11 4/12/12 <br /> Monitoring and Field Parameters <br /> Methane Concentration(percent) 0.0 NA 0 0 0 <br /> Carbon Dioxide(percent) 11.3 NA 11.5 11.9 1.2 <br /> Oxygen(percent) 9.3 NA 9.1 8.6 18.7 <br /> Volatile Organic Compounds PPB(v/v) <br /> Freon 12 <1.0 410 540 450 410 <br /> Freon 114 <1.0 17 21 19 17 <br /> Chloromethane <4.0 <34 <12 <5.4 <17 <br /> Vinyl Chloride <1.0 <8.6 <2.9 <1.3 <1.7 <br /> 1,3-Butadiene <1.0 <8.6 <2.9 <1.3 <1.7 <br /> Bromomethane <1.0 <8.6 <2.9 <1.3 <17 <br /> Chloroethane <1.0 <8.6 <2.9 <5.1 <6.6 <br /> Freon 11 <1.0 65 78 80 67 <br /> Ethanol 47 48 51 170 <6.6 <br /> Freon 113 <1.0 <8.6 3.4 3.8 3.6 <br /> 1,1-Dichloroethene <1.0 <8.6 <2.9 <1.3 <1.7 <br /> Acetone <4.0 <34 <12 9.0 <1.7 <br /> 2-Propanol <4.0 <34 <12 <5.4 <6.6 <br /> Carbon Disulfide 1.1 <8.6 4.4 <5.4 <6.6 <br /> 3-Chloropropene <4.0 <34 <12 <5.4 <6.6 <br /> Methylene Chloride <1.0 <8.6 <2.9 <1.3 <17 <br /> Methyl tert-butyl ether <1.0 <8.6 <2.9 <1.3 <1.7 <br /> trans-1,2-dichloroethene <1.0 <8.6 <2.9 <1.3 <1.7 <br /> Hexane <1.0 <8.6 <2.9 <1.3 <1.7 <br /> 1,1-Dichloroethane <1.0 11 13 12 14 <br /> 2-butanone(Methyl Ethyl Ketone) 2.5 100 16 9.4 <6.6 <br /> cis-1,2-Dichloroethene <1.0 <8.6 <2.9 <1.3 <1.7 <br />