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9 0 0 <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -1 <br />Sample Type: Air <br />Sam lin Date <br />1/29/08 <br />7/29/08 <br />1/22/09 <br />7/15/09 <br />3/2/10 <br />9/3/10 <br />1/25/11 <br />7/29/11 <br />4/12/12 <br />NT <br /><8.8 <br /><450 <br /><960 <br /><990 <br /><0.5 <br />2.7 <br /><110 <br /><240 <br /><250 <br />Monitoring and Field Parameters <br /><2.2 <br /><110 <br /><240 <br /><250 <br />Methane Concentration (percent) <br />0.2 <br />NT <br />0.5 <br />0.7 <br />0.4 <br />0.2 <br />0.5 <br />0.5 <br />0.4 <br />Carbon Dioxide (percent) <br />0.4 <br />NT <br />0.5 <br />0.5 <br />0.9 <br />0.3 <br />0.4 <br />0.5 <br />0.4 <br />Oxygen (percent) <br />19.2 <br />NT <br />18.9 <br />16.6 <br />19.3 <br />19.4 <br />17.8 <br />16.3 <br />18.4 <br />Volatile Organic Compounds PPB (v/v) <br />Freon 12 <br /><0.5 <br /><2.2 <br /><110 <br /><240 <br /><250 <br />44 <br /><150 <br /><52 <br /><320 <br />Freon 114 <br /><0.5 <br /><2.2 <br /><110 <br /><240 <br /><250 <br />6.1 <br /><150 <br /><52 <br /><320 <br />Chloromethane <br /><0.5 <br /><8.8 <br /><450 <br /><960 <br /><990 <br />64 <br /><610 <br /><210 <br /><3200 <br />Vinyl Chloride <br /><0.5 <br />3.7 <br />570 <br />560 <br />440 <br />620 <br />310 <br />130 <br />840 <br />1,3 -Butadiene <br />NT <br /><2.2 <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br />Bromomethane <br /><0.5 <br /><2.2 <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><3200 <br />Chloroethane <br /><0.5 <br /><2.2 <br />150 <br /><240 <br /><250 <br />170 <br /><150 <br /><210 <br /><1300 <br />Freon 11 <br /><0.5 <br /><2.2 <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br />Ethanol <br />NT <br /><8.8 <br /><450 <br /><960 <br />. <990 <br /><19 <br /><610 <br /><210 <br />1400 <br />FrPnn 113 <br /><0.5 <br /><2.2 <br /><110 <br /><240 <br /><250 <br /><4.8 <br /><150 <br /><52 <br /><320 <br />1,1-Dichloroethene <0.5 <2.2 <110 <240 <250 <4.8 <I5u <5z <3Zu <br />Arc+nna 5.9 <8.8 <450 <960 <990 23 <610 280 <3200 <br />2 -Propanol <br />Carbon Disulfide <br />3-Chloropropene <br />Methylene Chloride <br />Methyl tert-butyl ether <br />trans-1,2-Dichloroethene <br />Hpy.gnP <br />NT <br /><8.8 <br /><450 <br /><960 <br /><990 <br /><0.5 <br />5.8 <br /><110 <br /><240 <br /><250 <br />NT <br /><8.8 <br /><450 <br /><960 <br /><990 <br /><0.5 <br />2.7 <br /><110 <br /><240 <br /><250 <br />NT <br /><2.2 <br /><110 <br /><240 <br /><250 <br />NT <2.2 <110 <240 <250 <br /><1.0 <2.2 <110 <240 <250 <br /><19 <br /><6'lu <br />tzu <br /><i3uu <br />160 <br /><150 <br />230 <br />1400 <br /><19 <br /><610 <br /><210 <br /><1300 <br /><4.8 <br /><150 <br /><52 <br /><3200 <br /><4.8 <br /><4.8 <br />4.8 <br /><150 <br /><150 <br /><150 <br /><52 <br /><52 <br /><52 <br /><320 <br /><320 <br /><320 <br />i 1-nirh1r)mPfhnnP <0.5 <2.2 <110 <240 <250 <4.8 <I5u <5/ �3�u <br />2-Butanone (Methyl Ethyl Ketone) <br />ric-1 9-nirhloroethene <br />7 13 <110 <240 <250 <4.8 <1 bu <ci u 1 i ouu <br /><0.5 <2.2 <110 <240 <250 <4.8 <150 <52 <320 <br />rofuran 110 <2.2 <110 <240 <250 <4.6 <I5u <br />