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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -8 <br />Sample Type: Air <br />Sampling Date 10/1/03 2/11/04 5/7/04 7/22/04 11/17/04 2/14/05 10/3/05 6/30/06 11/29/06 3/13/07 8/20/07 <br />Monitoring and Field Parameters <br />Volatile Oraanic Compounds PPB (v/v <br />Freon 12 <br />Freon 114 <br /><0.5 <br /><0.5 <br />2.3 <br />1.0 <br />2.9 <br /><0.5 <br />14 <br /><0.5 <br />6.0 <br /><0.5 <br />51.6 <br /><0.5 <br /><0.5 <br /><0.5 <br />270 <br /><0.5 <br />270 <br />7.8 <br />800 <br /><0.5 <br />490 <br /><0.5 <br />Chloromethane <br /><0.5 <br /><0.5 <br /><0.5 <br />1.00 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><U.5 <br /><0.5 <br /><0.5 <br />Vinyl Chloride <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0. <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><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 />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 /><0.5 <br />Chloroethane <br /><.5 <br /><0.5 <br /><.5 <br /><.5 <br /><0.5 <br /><.5 <br /><0.5 <br /><.5 <br /><.5 <br /><.5 <br /><.5 <br />Freon 11 <br /><0.5 <br />1.0 <br /><0.5 <br />10 <br />3.5 <br />38 <br /><0.5 <br />170 <br />170 <br />460 <br />300 <br />Ethanol <br />NT <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 /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />8.7 <br /><0.5 <br />16 <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 /><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 /><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 />NT <br />Carbon Disulfide <br />NT <br />NT <br />NT <br />NT <br />NT <br /><0.5 <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 />NT <br />Methylene Chloride <br />5.0 <br />1.7* <br /><1.0 <br /><1.0 <br />0.8 <br /><1.0 <br />153 <br /><0.5 <br />153 <br /><1.0 <br /><1.0 <br />Methyl tert-butyl ether <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 />NT <br />NT <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 /><1.0 <br />1- is oroet ane <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 />4 <br />2-Butanone (Methyl Ethyl Ketone) <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />cis- , - is oroe ene <br />< <br />< <br />< <br />< <br />< <br />< <br /><0.5 <br />< <br />< <br /><0.5 <br />etrahy rofuran <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br /><U.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />Chloroform <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 /><0.5 <br />1,1,1 -Trichloroethane NT NT NT NT NT NT NT NT NT NT NI <br />