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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />UNSATURATED ZONE SOIL GAS <br />FOOTHILL SANITARY LANDFILL <br />SG -3 <br />Sample Type: Air <br />Samplinq Date 1/29/08 7/29/08 1/22/09 7/15/09 3/2/10 9/3/10 1/25/11 7/29/11 4/12/12 8/7/12 1/28/13 <br />Monitoring and Field Parameters <br />Volatile Organic Compounds PPB (v/v) <br />NT <br /><4.6 <br /><5.4 <br /><5.2 <br /><4.8 <br /><4.7 <br /><4.1 <br /><4.1 <br /><1. i <br /><a.1 <br /><4.0 <br />Freon 12 <br />_- <br />18 <br />78 <br />250 <br />120 <br />36 <br />31 <br />35 <br />48 <br />120 <br />60 <br />34 <br />Freon 114 <br />2 <br />25 <br />38 <br />20 <br />5.4 <br />4.5 <br />5.2 <br />7.6 <br />19 <br />8.7 <br />5.1 <br />_ <br />C loromethane <br />< .5 <br /><4. <br /><5.4 <br /><5. <br /><4.8 <br /><4.7 <br /><4.1 <br /><4.1 <br /><6.8 <br /><3.3 <br /><1 <br />Vm'-yr-Cirri <br /><0.5 <br />< <br /><1A <br />< <br /><1.2 <br /><1.2 <br />< <br /><1.0 <br /><0.6 <br /><0.82 <br />< . <br />e <br />NT <br /><1.1 <br /><1.4 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.0 <br /><1.0 <br /><0.68 <br /><0.82 <br /><1.2 <br />1,3 -Butadiene <br />NT <br /><1.1 <br /><1.4 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.0 <br /><1.0 <br /><0.68 <br /><0.82 <br /><1.2 <br />_ <br />Bromomethane <br /><0.5 <br /><1.1 <br /><1.4 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.0 <br /><1.0 <br /><6.8 <br /><8.2 <br /><12 <br />C loroetmane <br /><0.5 <br />< <br /><1.4 <br />< <br />< <br />< <br /><1.0 <br /><4.1 <br /><2.7 <br /><3.3 <br /><4.8 <br />_ <br />Freon 11 <br />20 <br />78 <br />120 <br />54 <br />21 <br />14 <br />17 <br />28 <br />56 <br />27 <br />16 <br />Ethanol <br />NT <br /><4.6 <br /><5.4 <br /><5.2 <br /><4.8 <br /><4.7 <br />6.0 <br />190 <br /><2.7 <br /><3.3 <br /><4.8 <br />Freon 113 <br /><0.5 <br />2.3 <br />4.9 <br />1.8 <br /><1.2 <br /><1.2 <br /><1.0 <br /><1.0 <br />2.1 <br />1.1 <br /><1.2 <br />1,1-Dichioroethene <br /><0.5 <br />2.8 <br /><1.4 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.0 <br /><1.0 <br /><0.68 <br /><0.82 <br /><1.2 <br />Aratnna <br />4.7 <br />15 <br />11 <br /><5.2 <br />9.7 <br />7 <br />4.9 <br />4.4 <br />7.6 <br /><0.82 <br /><12 <br />2 -Propanol <br />NT <br /><4.6 <br /><5.4 <br /><5.2 <br /><4.8 <br /><4.7 <br /><4.1 <br /><4.1 <br /><1. i <br /><a.1 <br /><4.0 <br />Carbon Disulfide <br /><0.5 <br /><1.1 <br /><1.4 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.0 <br /><4.1 <br /><2.7 <br /><3.3 <br /><4.8 <br />3-Chloropropene <br />NT <br /><4.6 <br /><5.4 <br /><5.2 <br /><4.8 <br /><4.7 <br /><4.1 <br /><4.1 <br /><2.7 <br /><3.3 <br /><4.8 <br />Chloride <br /><1.0 <br /><1.1 <br /><1.4 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.0 <br /><1.0 <br /><6.8 <br /><0.82 <br /><12 <br />_Methylene <br />Methyl tert-butyl ether <br />NT <br /><1.1 <br /><1.4 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.0 <br /><1.0 <br /><0.68 <br /><0.82 <br /><1.2 <br />trans- 1,2-Dichloroethene <br />NT <br /><1.1 <br /><1.4 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.0 <br /><1.0 <br /><0.68 <br /><0.82 <br /><1.2 <br />Hexane <br /><1.0 <br /><1.1 <br /><1.4 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.0 <br /><1.0 <br /><0.68 <br /><0.82 <br /><1.2 <br />1,1-6ichioroet ane <br />< .5 <br /><1.1 <br />< .4 <br /><1.3 <br />< .2 <br />< .2 <br /><1. <br /><1.1 <br /><0.68 <br /><0.82 <br /><1.2 <br />_ <br />2-Butanone (Methyl Ethyl Ketone) <br />5.3 <br />1.6 <br /><1.4 <br /><1.3 <br /><1.2 <br />1.8 <br /><1.0 <br />;I <br /><2.7 <br /><3.3 <br /><4.8 <br />cis -1,2- iDich 6 oethene <br /><0.5 <br />< <br />< .4 <br /><1.3 <br /><1.2 <br /><1.2 <br /><1.0 <br />:: <br />< .0 <br /><0. <br /><0.82 <br /><1.2 <br />T6trah d o uran <br />75 <br /><1;1 <br /><1.4 <br /><1. <br />< .2 <br /><1.2 <br /><1.0 <br /><1.0 <br /><0.68 <br /><0.82 <br /><1.2 <br />Chforoiorm <br /><0.5 <br /><1. <br /><1.4 <br />< .3 <br /><1.2 <br /><1.2 <br /><1.0 <br /><1.0 <br /><0.68 <br /><0.82 <br /><1.2 <br />�Tric oroethane <br /><0.5 <br /><1.1 <br /><1.4 <br />< .3 <br /><1.2 <br />< .2 <br />< .0 <br /><1.0 <br /><0.68 <br /><0.82 <br /><1.2 <br />J <br />