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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 8/7/12 1/30/13 <br /> Monitoring and Field Parameters <br /> Methane Concentration(percent) 0.0 NA 0 0 0 0 0 <br /> Carbon Dioxide(percent) 11.3 NA 11.5 11.9 1.2 3.1 10.9 <br /> Oxygen(percent) 9.3 NA 9.1 8.6 18.7 17.8 11.8 <br /> Volatile Organic Compounds PPB(v/v) <br /> Freon 12 <1.0 410 540 450 410 420 1.6 <br /> Freon 114 <1.0 17 21 19 17 16 <1.1 <br /> _Chloromethane <4.0 <34 <12 <5.4 <17 <7.3 <11 <br /> Vinyl Chloride <1.0 <8.6 <2.9 <1.3 <1.7 <1.8 <1.1 <br /> 1,3-Butadiene <1.0 <8.6 <2.9 <1.3 <1.7 <1.8 <1.1 <br /> Bromomethane <1.0 <8.6 <2.9 <1.3 <17 <18 <11 <br /> Chloroethane <1.0 <8.6 <2.9 <5.1 <6.6 <7.3 <4.5 <br /> Freon 11 _ <1.0 _65 78 80 67 63 1.1 <br /> Ethanol 47 48 51 170 <6.6 120 <4.5 <br /> _Freon 113 <1.0 <8.6 3.4 3.8 3.6 2.5 <1.1 <br /> 1,1-Dichloroethene <1.0 <8.6 <2.9 <1.3 <1.7 <1.8 <1.1 <br /> Acetone <4.0 <34 <12 9.0 <1.7 <18 45 <br /> 2-Propanol <4.0 <34 <12 <5.4 <6.6 <7.3 <4.5 <br /> _Carbon Disulfide _ 1.1 <8.6 4.4 <5.4 <6.6 <7.3 <4.5 <br /> 3-Chloropropene __ <4.0 <34 <12 <5.4 <6.6 <7.3 <4.5 <br /> Methylene Chloride <1.0 <8.6 <2.9 <1.3 <17 <18 <11 <br /> _Methyl tert-butyl ether <1.0 <8.6 <2.9_ <1.3 <1.7 <1.8 <1.1 <br /> trans-1,2-dichloroethene <1.0 <8.6 <2.9 <1.3 <1.7 <1.8 <1.1 <br /> Hexane <br /> <1.0 <8.6 <2.9 <1.3 <1.7 <1.8 <1.1 <br /> 1,1-Dichloroethane <1.0 11 13 12 14 9.4 <1.1 <br /> 2-butanone(Methyl Ethyl Ketone) 2.5 100 16 9.4 <6.6 100 22 <br /> cis-1,2-Dichloroethene <1.0 _<8.6 <2.9 <1.3 <1.7 <1.8 <1.1 <br />