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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -6 <br />Sample Type: Air <br />Sampling Date 10/1/03 2/11/04 5/6/04 7/22/04 11/15/04 2/11/05 10/3/05 6/30/06 11/29/06 3/13/07 <br />Monitoring and Field Parameters <br />Volatile Organic Compounds PPB (v/v) <br />Freon 12 4.4 266 179 345 265 416 434 730 530 1500 <br />Freon 114 <0.5 13 9.8 19 15 21 18 <0.5 22 56 <br />Chloromethane <0.5 <0.5 -<0.5 1.0 < < < < < <0.5 <br />1,3 -Butadiene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Bromomethane <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />Chloroethane <br /><03 <br /><.5 <br /><.5 <br /><,5 <br /><.5 <br /><.5 <br />< <br />< <br /><.5 <br />< uz- <br />Freon 11 <br />1.8 <br />89 <br />94 <br />107 <br />81 <br />130 <br />156 <br />210 <br />190 <br />480 <br />Ethanol <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Freon 113 <br /><0.5 <br />7.8 <br />7.0 <br />10.6 <br />7.5 <br />11 <br />8.8 <br /><0.5 <br />12 <br />24 <br />1,1-Dichloroethene <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />Acetone <br />NT <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />2 -Propanol <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Carbon Disulfide <br />NT <br />NT <br />NT <br /><0.5 <br />NT <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />3-Chloropropene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />_ <br />Methylene Chloride <br />1.5* <br />6.9 <br /><1.0 <br />8.8 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br />Methyl tert-butyl ether <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />trans-1,2-Dichloroethene <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Hexane <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br />- is oroe ane <br /><0.5 <br /><0.5 <br /><0. <br /><0. <br />< <br />< <br />< <br /><0. <br />< <br /><0. <br />2-Butanone (Methyl Ethyl Ketone <br />NT <br />NT <br />NT <br /><0.5 <br />NT <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />cis- - is oroet ene <br /><U.5 <br /><U.5 <br /><0.3 <br />< <br /><U5 <br />< <br />< <br />< <br />< 0.5 <br />etra ro uran <br />< <br />< <br /><0.5 <br />< <br />< <br /><0.5 <br />< <br /><0.5 <br /><0.5 <br />< <br />C;hlorotorF- <br /><0. <br />< <br />< <br />< <br />< <br />< <br /><0.5 <br /><0.5 <br /><0. <br />< <br />_ nn nmat ana <br /><0-5 <br />< <br />< <br />< <br />< <br />< <br /><0.5 <br /><0.5 <br />< <br />< <br />