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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />FOOTHILL SANITARY LANDFILL <br />Units: mg/l, unless noted <br />Sample Designation <br />Sampling Date <br />MW -1 <br />727/06 <br />MW -1 <br />1/31/07 <br />MW -1 <br />7/23/07 <br />MW -1 <br />2/5/08 <br />MW -1 <br />7/31/08 <br />MW -1 <br />2/4/10 <br />MW -1 <br />5/26/10 <br />Acrylonitrile <br />NA <br />NA <br />NA <br />NA <br /><0.89 <br /><I2 <br />NA <br />t -Amyl Alcohol <br />NA <br />NA <br />NA <br />NA <br />NA <br /><6.5 <br />NA <br />t -Butyl Alcohol <br />NA <br />NA <br />NA <br />NA <br />NA <br /><9.4 <br />NA <br />Carbon disulfide <br /><0.23 <br /><0.23 <br /><0.23 <br /><0.86 <br /><0.86 <br /><0.35 <br />NA <br />trans-1,4-Dichloro-2-butene <br />NA <br />NA <br />NA <br />NA <br /><1.3 <br /><1.4 <br />NA <br />Diisopropyl Ether <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.19 <br />NA <br />Ethanol <br />NA <br />NA <br />NA <br />NA <br />NA <br /><45 <br />NA <br />Ethyl ten -butyl Ether <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.18 <br />NA <br />Hexachloroethane <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.13 <br />NA <br />2-Hexanone <br />NA <br />NA <br />NA <br />NA <br /><1.8 <br /><3.4 <br />NA <br />2-Butanone (MEK) <br /><0.92 <br /><0.92 <br /><0.92 <br /><2.0 <br /><2.0 <br />Q.5 <br />NA <br />Methyl iodide <br />NA <br />NA <br />NA <br />NA <br /><0.83 <br /><0.44 <br />NA <br />4-Methyl-2-pentanone (MIBK) <br />NA <br />NA <br />NA <br />NA <br />4.9 <br /><2.1 <br />NA <br />Vinyl Acetate <br />NA <br />NA <br />NA <br />NA <br /><0.85 <br /><2.4 <br />NA <br />1,1,2-Trichlorotriflouroethane <br />NA <br />NA <br />NA <br />NA <br /><0.61 <br />NA <br />NA <br />1,1-Dichloropropene <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br />NA <br />NA <br />1,2,3-Trichlorobenzene <br />NA <br />NA <br />NA <br />NA <br /><0.37 <br />NA <br />NA <br />1,2,4-Trimethylbenzene <br /><0.23 <br /><0.23 <br /><023 <br /><0.29 <br /><0.33 <br />NA <br />NA <br />1,3,5-Trimethylbenzene <br /><0.20 <br /><0.20 <br /><020 <br /><0.32 <br /><0.39 <br />NA <br />NA <br />1,3-Dichloropropane <br /><0.12 <br /><0.12 <br /><0.12 <br /><0.32 <br /><0.37 <br />NA <br />NA <br />2,2-Dichloropropane <br />NA <br />NA <br />NA <br />NA <br /><0.39 <br />NA <br />NA <br />2-Chlorotoluene <br />NA <br />NA <br />NA <br />NA <br /><0.33 <br />NA <br />NA <br />4-Chlorotoluene <br />NA <br />NA <br />NA <br />NA <br /><0.32 <br />NA <br />NA <br />4-Isopropyltoluene <br />NA <br />NA <br />NA <br />NA <br /><0.39 <br />NA <br />NA <br />Acrolein <br />NA <br />NA <br />NA <br />NA <br /><4.5 <br />NA <br />NA <br />Broniobenzene <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br />NA <br />NA <br />Isoproplybenzene <br />NA <br />NA <br />NA <br />NA <br /><0.39 <br />NA <br />NA <br />m/p-Xylene <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />n-Butylbenzene <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br />NA <br />NA <br />n-Propylbenzene <br />NA <br />NA <br />NA <br />NA <br /><0.33 <br />NA <br />NA <br />sec-Butylbenzene <br />NA <br />NA <br />NA <br />NA <br /><0.40 <br />NA <br />NA <br />ten-Butylbenzene <br />NA <br />NA <br />NA <br />NA <br /><0.35 <br />NA <br />NA <br />Constituents of Concern Parameters <br />Semivolatile Organic Compounds <br />(EPA Method 3520/8270) <br />All Compounds <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Oreanochlorine Pesticides and Polychlorinated <br />Biphenvl's <br />(EPA Method 3510/8080) <br />All Compounds <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Chlorinated Herbicides <br />(EPA Method 8150A Modified) <br />All Compounds <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />* = Trace Concentration <br />[ l ] This analytical result appears to be anomalous and therefore was not used in statistical <br />evaluation procedures. <br />(I) Parameter also detected in one <br />or more quality control blanks <br />NA = Not Available <br />