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Units: mg/l, unless noted <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />FOOTHILL SANITARY LANDFILL <br />Sample Designation <br />Sampling Date <br />MW -2R <br />8/13/03 <br />MW -2R <br />1/21/04 <br />MW -2R <br />7/21/04 <br />MW -2R <br />2/2/05 <br />MW -2R <br />7/27/05 <br />MW -2R <br />5/15/06 <br />MW -2R <br />7/27/06 <br />MW -2R <br />1/31/07 <br />MW -2R <br />7/23/07 <br />MW -2R <br />2/6/08 <br />MW -2R <br />7/30/08 <br />MW -2R <br />1/15/09 <br />MW -2R <br />8/17/09 <br />MW -2R <br />10/7/09 <br />MW -2R <br />2/3/10 <br />_ Acrylonitrile <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.89 <br /><0.84 <br /><1.5 <br />NA <br /><12 <br />_ Tert-Amyl Alcohol <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><6.5 <br />Tert-Butyl Alcohol <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><9.4 <br />Carbon disulfide <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.1 I <br /><0.11 <br /><0.11 <br /><0.11 <br /><0.86 <br /><0.86 <br /><I.0 <br /><0.40 <br />NA <br /><0.35 <br />trans-1,4-Dichloro-2-butene <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><1.3 <br /><0.73 <br /><1.4 <br />NA <br /><1.4 <br />Diisopropyl ether <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.19 <br />Ethanol <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><45 <br />_ Ethyl ter[ -butyl Ether <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.18 <br />_ Hexachloroethane <br />NA <br />NA <br />NA - <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.13 <br />2-Hexanone <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><1.8 <br /><1.8 <br /><2.9 <br />NA <br /><3.4 <br />2-Butanone (MEK) <br /><0.14 <br /><0.14 <br /><0.14 <br /><0.92 <br /><0.92 <br /><0.92 <br /><0.92 <br /><0.92 <br /><0.92 <br /><2.0 <br /><2.0 <br /><1.9 <br /><2.4 <br />NA <br /><2.5 <br />Methyl iodide <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.83 <br /><0.63 <br /><0.42 <br />NA <br /><0.44 <br />_ 4-Methyl-2-pentanone (MIBK) <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><1.9 <br /><1.9 <br /><3.4 <br />NA <br /><2,1 <br />Vinyl Acetate <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.85 <br /><0.80 <br /><2.4 <br />NA <br /><2.4 <br />1,3-Dichloropropane <br /><0.40 <br /><0.40 <br /><0.40 <br /><0.12 <br /><0.12 <br /><0.12 <br /><0.12 <br /><0.12 <br /><0.12 <br /><0.32 <br /><0.37 <br /><0.37 <br /><0.099 <br />NA <br />NA <br />_ 2,2-Dichloropropane <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.39 <br /><0.44 <br /><0.14 <br />NA <br />NA <br />_ 1,1-Dichloropropene <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br /><0.47 <br /><0.18 <br />NA <br />NA <br />_ Acetonitrile <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><6.3 <br />NA <br />NA <br />Acrolein <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><4.5 <br /><4.5 <br /><8.9 <br />NA <br />NA <br />_ Allyl chloride <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.42 <br />NA <br />NA <br />_ Chloroprene <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.27 <br />NA <br />NA <br />_ Ethyl methacrylate <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><1.0 <br />NA <br />NA <br />_ Isobutanol <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><13 <br />NA <br />NA <br />_ Methacrylonitrile <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><3.1 <br />NA <br />NA <br />_ Methyl methacrylate <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><1.6 <br />NA <br />NA <br />_ Propionitrile <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><13 <br />NA <br />NA <br />_ 1,1,2-Trichlorotriflouroethane <br />1,2,3-Trichlorobenzene <br />1,2,4-Trimethylbenzene <br />1,3,5-Trimethylbenzene <br />_ 2-Chlorotoluene <br />4-Chlorotoluene <br />4-Isopropyltoluene <br />_ Bromobenzene <br />Isoproplybenzene <br />m/p-Xylene <br />n-Butylbenzene <br />n-Propylbenzene <br />_ sec-Butylbenzene <br />tert-Butylbenzene <br />NA <br />NA <br /><0.18 <br /><0.28 <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.18 <br /><0.28 <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.18 <br /><0.28 <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.23 <br /><0.20 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.23 <br /><0.20 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.23 <br /><0.20 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.23 <br /><0.20 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.23 <br /><0.20 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.23 <br /><0.20 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.29 <br /><0.32 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><0.61 <br /><0.37 <br /><0.33 <br /><0.39 <br /><0.33 <br /><0.32 <br /><0.39 <br /><0.38 <br /><0.39 <br />NA <br /><0.38 <br /><0.33 <br /><0.40 <br /><0.35 <br /><0.78 <br /><0.37 <br /><0.33 <br /><0.39 <br /><0.33 <br /><0.32 <br /><0.39 <br /><0.34 <br /><0.39 <br />NA <br /><0.41 <br /><0.38 <br /><0.41 <br /><0.38 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Constituents of Concern Parameters <br />Semivolatile Organic Compounds (EPA Method 3520/8270) <br />All Compounds NA <br />Organochlorine Pesticides and Polychlorinated Biphenvl's <br />(EPA Method 3510/8080) <br />All Compounds NA <br />rinated Herbici <br />NA ND NA NA NA NA NA NA NA NA NA ND NA NA <br />NA ND NA NA NA NA NA NA NA NA NA ND ND NA <br />All Compounds NA NA NO NA NA NA NA NA NA NA NA NA ND NA NA <br />* = Trace Concentration <br />[ 1) This analytical result appears to be anomalous and therefore was not used in statistical evaluation procedures. <br />(I) Parameter also or one or more quality control blanks 40 ie <br />