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0 0 9 <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -12S <br />Sample Type: Air <br />Sampling Date 7/22/04 2/14/05 10/3/05 11/17/06 3/13/07 8/20/07 1/29/08 7/29/08 1/23/09 7/15/09 3/2/10 <br />Monitoring and Field Parameters <br />Volatile Organic Compounds PPB <br />Freon 12 <0.5 <0.5 <0.5 <0.5 NT NT NT NT NT NT NT <br />Freon 114 <0.5 <0.5 <0.5 <0.5 NT NT NT NT NT NT NT <br />Chloromethane < < < <0.5 NT NT NT NT NT NT NT <br />1,3 -Butadiene NT NT NT NT NT N i N I N i N i N 1 N 1 <br />Bromomethane <0.5 <0.5 <0.5 <0.5 NT NT NT NT NT NT NT <br />nmc+ nnc 41 < . <0.5 <0.5 17 NT NT PT PT PT NT <br />Freon 11 <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />NT <br />N I <br />N I <br />N i <br />N i <br />N i <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 />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />1,1-Dichloroethene <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Acetone <br /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <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 /><0.5 <br /><0.5 <br /><0.5 <br /><0.5 <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <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 /><1.0 <br /><1.0 <br /><1.0 <br />1.2 <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />Methyl tert-butyl ether <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />N I <br />N I <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 />Hexane <br /><1.0 <br /><1.0 <br /><1.0 <br /><1.0 <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />NT <br />- is oroet ane <br /><0.5 <br />< <br /><0.5-<0.5 <br />2- Butanone (Methvl Ethvl 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-1,2-Dicnloroetnene <br />etra v ro uran <br />riI<iIbY7Ta:1GT R -I RM i'%T , A A - <br />