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Units: mg/1; unless noted <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />FOOTHILL SANITARY LANDFILL <br />Sample Designation <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -I <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -1 <br />LW -1 <br />Sampling Date <br />11/28/94 <br />5/30/03 <br />8/14/03 <br />1/22/04 <br />7/21/04 <br />2/2/05 <br />727/05 <br />3/28/06 <br />7/27/06 <br />1/31/07 <br />723/07 <br />2/5/08 <br />7/30/08 <br />1/15/09 <br />8/17/09 <br />10/7/09 <br />2/4/10 <br />1,2,3-Trichloropropane <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 /><0.43 <br /><0.43 <br /><0.43 <br />NA <br /><0.30 <br />Vinyl 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 /><0.47 <br /><0.47 <br /><0.16 <br />NA <br /><0.14 <br />Total Xylenes <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 /><1.1 <br /><LI <br /><0.53 <br />NA <br /><0.26 <br />Acetone <br />NA <br /><0.52 <br />(1.2*) <br /><0.52 <br /><0.52 <br /><1.8 <br /><1.8 <br /><1.8 <br /><Lg <br /><1.8 <br /><1.8 <br /><2,7 <br /><3.0 <br /><3.0 <br /><7.4 <br />NA <br /><4.6 <br />Acrylonitrile <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 /><0.89 <br /><0.84 <br /><1.5 <br />NA <br /><1.2 <br />t -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 />NA <br />NA <br /><6.5 <br />t -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 />NA <br />NA <br /><9.4 <br />Carbon disulfide <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />_ <br /><0.1 I <br /><0.11 <br /><0.1 I <br /><0.11 <br /><0.86 <br /><0.86 <br /><1.0 <br /><0.40 <br />NA <br /><0.35 <br />trans-l,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 />NA <br />NA <br /><1.3 <br /><0.73 <br /><1.4 <br />NA <br />_ <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 />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 />NA <br />NA <br /><45 <br />Ethyl t -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 />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 />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 />NA <br />NA <br /><1.8 <br /><1.8 <br /><2.9 <br />NA <br /><3.4 <br />2-Butanone (MEK) <br />NA <br /><0.14 <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 />_ <br /><2.5 <br />Iodomethane <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 /><0.83 <br /><0.63 <br /><0.42 <br />NA <br />_ <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 />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 />NA <br />NA <br /><0.85 <br /><0.80 <br /><2.4 <br />NA <br /><2.4 <br />1,3-Dichloropropane <br />NA <br /><0.40 <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 />NA <br />NA <br /><0.39 <br /><0.44 <br /><0.14 <br />NA <br />NA <br />I,1-Dichloropropene <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 /><0.38 <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 />NA <br />NA <br /><6.3 <br />NA <br />NA <br />Acrolem <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 /><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 />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 />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 />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 />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 />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 />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 />NA <br />NA <br /><13 <br />NA <br />NA <br />1,1,2-Trichlorotriflouroethane <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 /><0.61 <br /><0.78 <br />NA <br />NA <br />_ <br />NA <br />1,2,3-Trichlorobenzene <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 /><0.37 <br /><0.37 <br />NA <br />NA <br />NA <br />1,2,4-Trimethylbenzene _ <br />NA <br /><0.18 <br /><0.18 <br /><0.18 <br /><0.18 <br /><023 <br /><0.23 <br /><023 <br /><0.23 <br /><0.23 <br /><0.23 <br /><0.29 <br /><0.33 <br /><0.33 <br />NA <br />NA <br />NA <br />1,3,5-Trimethylbenzene <br />NA <br /><0.28 <br /><0.28 <br /><0.28 <br /><0.28 <br /><020 <br /><020 <br /><0.20 <br /><0.20 <br /><0.20 <br /><0.20 <br /><0.32 <br /><0.39 <br /><0.39 <br />NA <br />NA <br />_ <br />NA <br />2-Chlorotoluene <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 /><0.33 <br /><0.33 <br />NA <br />NA <br />NA <br />4-Chlormoluene <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 /><0.32 <br /><0.32 <br />NA <br />NA <br />NA <br />4-Isopropyltoluene <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 /><0.39 <br /><0.39 <br />NA <br />NA <br />NA <br />Bromobenzene <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 /><0.38 <br /><0.34 <br />NA <br />NA <br />NA <br />Isoproplybenzene <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 /><0.39 <br /><0.39 <br />NA <br />NA <br />NA <br />m/p-Xylene <br />NA <br /><0.38 <br /><0.38 <br /><0.38 <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 />n-Butylbenzene <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 /><0.38 <br /><0.41 <br />NA <br />NA <br />_ <br />NA <br />n-Propylbenzene <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 /><0.33 <br /><0.38 <br />NA <br />NA <br />NA <br />sec-Butylbenzene <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 /><0.40 <br /><0.41 <br />NA <br />NA <br />NA <br />tert-Butylbenzene <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 /><0.35 <br /><0.38 <br />NA <br />NA <br />NA <br />Constituents of Concern Parameters <br />Semivolatile Oreanic Compounds (EPA Method 3520/8270) <br />All Compounds NA NA NA NA NA <br />Organochlorine Pesticides and Polychlorinated Biphenyl's <br />(EPA Method 3510/8080) <br />All Compounds NA NA NA NA NA <br />= Trace Concentration <br />[ I ] This analytical result appears to be anomalous and therefore was not used in statistical evaluation procedures. <br />(1 } Parameter also detected in one or more quality control blanks <br />N A = Nn AlIkkAm <br />NA NA NA NA NA NA NA NA NA ND NA NA <br />NA NA NA NA NA NA NA NA NA ND NA NA <br />