ARCHIVED REPORTS_2012_3 - Laserfiche WebLink

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1�1 HISTORICAL SUMMARY OF ANALYTICAL RESULTS UNSATURATED ZONE SOIL GAS FOOTHILL SANITARY LANDFILL SG -1 Sample Type: Air Sampling Date 1/29/08 7/29/06 1/22/09 7/15/09 3/2/10 9/3/10 1/25/11 7/29/11 4/12/12 8/7/12 1/28/12 Monitorina and Field Parameters Methane Concentration(percent) 0.2 NT 0.5 0.7 0.4 0.2 0.5 0.5 0.4 0.5 0.4 Carbon Dioxide (percent) 0.4 NT 0.5 0.5 0.9 0.3 0.4 0.5 0.4 0.4 0.5 Oxygen percent 19.2 NT 18.9 16.6 19.3 19.4 17.8 16.3 18.4 18.5 18.7 Volatile Organic Compounds PPB (v/v) Freon 12 `0'5 <2.2 <110 <240 <250 44 <150 <52 <320 <160 <180 Freon 114 <0.5 <2.2 <110 <240 <250 6.1 <150 <52 <320 <160 <180 <0.5 <8.8 <450 <960 <990 64 <610 <210 <3200 <640 <1800 _Chloromethane Vinyl Chloride <0.5 3.7 570 560 440 620 310 130 840 450 480 1,3 -Butadiene NT <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180 Bromomethane <0.5 <2.2 <110 <240 <250 <4.8 <150 <52 <3200 <1600 <1800 Chloroethane <0.5 <2.2 150 <240 <250 170 <150 <210 <1300 <640 <710 Freon 11 <0.5 <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180 Ethanol _ NT <8.8 <450 <960 <990 <19 <610 <210 1400 <640 <710 Freon 113 <0.5 <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180 1,1-5ichioroethene <0.5 <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180 Acetone 5.9 <8.8 <450 <960 <990 23 <610 280 <3200 <1600 2000 2 -Propanol NT <8.8 <450 <960 <990 <19 <610 720 <1300 <640 <710 Carbon Disulfide <0.5 5.8 <110 <240 <250 160 <150 230 1400 960 <710 3-Chloropropene NT <8.8 <450 <960 <990 <19 <610 <210 <1300 <640 <710 Methylene Chloride <0.5 2.7 <110 <240 <250 <4.8 <150 <52 <3200 <1600 <1800 Methyl tent -butyl ether NT <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180 trans-1,2-Dichloroethene NT <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180 Hexane <1.0 <2.2 <110 <240 <250 4.8 <150 <52 <320 <160 <180 1,1-Dichloroethane <0.5 <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180 2-Butanone (Methyl Ethyl Ketone) 7 13 <110 <240 <250 <4.8 <150 <210 <1300 <640 <710 cis-1,2-Dichloroethene <0.5 <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180 Tetrahydrofuran 110 <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180 Chloroform <0.5 <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180 1,1,1 -Trichloroethane <0.5 <2.2 <110 <240 <250 <4.8 <150 <52 <320 <160 <180