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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br /> UNSATURATED ZONE SOIL GAS <br /> HARNEY LANE SANITARY LANDFILL <br /> EAST HEADER <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 /> Monitorina and Field Parameters <br /> Methane Concentration(percent) NA NA 26.9 27 27.7 28 26.6 <br /> _ <br /> Carbon Dioxide(percent) __-N-A----,4A--26.8 23.5 24.4 27.3 24.7 _ <br /> Oxygen(percent) NA _ NA 0 0.7 0.4 0.6 0.2 <br /> Volatile Organic Compounds PPB My) <br /> Freon 12 _ 580 <5.7 320 380 240 230 650 <br /> Freon 114 140 <5.7 120 90 82 92 96 <br /> _ Chloromethane <110 <23 <45 <29 <83 <32 <200 <br /> Vinyl Chloride 680 <5.7 800 420 430 490 670 <br /> _ <br /> _ 1,3-Butadiene <28 <5.7 <-_<7.2 <8.3 <8.0 <20 <br /> momethane <br /> Bro -- <28 <5.7 <11 <7.2 <83 <8.0 <200 _ <br /> -- ------- -------- <29 <33 <80 <82 <br /> Chloroethane 50 <5.7 51 <br /> --------------- -- <br /> <28 <5.7 <11 <7.2 <8.3 <32 <20 <br /> Freon 11 -- -- <br /> -__-.---- _-.- -----_- <23 500 340 <33 <br /> Ethanol 370® 410 <82- <20 <br /> __ <br /> <28 <5.7 <11 <7.2 <8.3 <8.0 <br /> Freon 113 ___ -------- <br /> 1,1-Dichloroethene_ ______ <28 <5.7 <11 <7_2 <8.3 <8.0 <20 <br /> ----Ac-et--one--------- <br /> 150 <23 340 55 <83 <80 <200 <br /> <29 <33 <32 <82 _ <br /> _ <br /> 2-Propanol _ <110 <23 87 _ <br /> Carbon_DisuI i d e <28_ <5.7 16 <29 <33 <32 <82 _ <br /> 3-Chloropropene <110 <23 <45 _<29 <33 <32 <82 <br /> Methylene Chloride - <28 <5.7 19 12 <83 <80 <200 <br /> Methyl tert-butyl ether <28 <5.7 <11 <7.2 <8.3 <8.0 <20 <br /> trans-1,2-dichloroethene <28 <5.7 <11 <7.2 <8.3 <8.0 <20 <br /> Hexane 510 <5.7 640 380 390 400 520 _ <br /> 1,1-Dichloroethane _ <28_ <5.7 <11 <7.2 <8.3 <8.0 <20 <br /> 2-butanone(Methyl Ethyl Ketone)-- 120 <5.7 350 49 70 48 <82 <br /> cis-1,2-Dichloroethene _ 88 <5.7 140 67 80 55 82 <br />