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GROUNDWATER <br />FOOTHILL SANITARY LANDFILL <br />Units: mg/1, unless noted <br />Sample Designation MW -2R MW -2R MW 2R MW -2R MW 2R MW -2R MW -2R MW 2R <br />Sampling Date 8/13/03____1/21104 7/21/04 2/2/05 7/27/05 5/15/06 7/27106 1/31/07 <br />Monatoring and Field Parameters <br />Csenersl Water Quality Parameters <br />Temperature (°C) (field) 21.9 14 24.8 18.8 20.7 19.7 21.5 17.5 <br />Chloride 6.7 7.1 6.7 2 6 5 6 6.2 <br />Nitrate -Nitrogen <br />3.1 <br />3.1 <br />2.9 <br />2.6 <br />2.8 <br />2.5 <br />2.3 <br />2.7 <br />Total Dissolved Solids <br />150 <br />180 <br />170 <br />ISO <br />160 <br />197 <br />193 <br />160 <br />Sulfate <br />2.4 <br />2.3 <br />1.8 <br />2 <br />2' <br />1.7 <br />3 <br />2.1 <br />pH (std. units) (field) <br />6.58 <br />7.19 <br />7.24 <br />7.14 <br />7.37 <br />7.08 <br />7.38 <br />7.58 <br />Electrical Conductivity (umhos/cm) (field) <br />203 <br />284 <br />207 <br />221 <br />243 <br />416 <br />368 <br />205 <br />Turbidity (NTU) (field) <br />5.2 <br />10.7 <br />3.74 <br />9.8 <br />11.6 <br />11.6 <br />9.6 <br />17.1 <br />Calcium <br />15 <br />15 <br />15 <br />16 <br />17.9 <br />17.6 <br />17.5 <br />15 <br />Potassium <br />1.4 <br />2.4 <br />2.8 <br />4.1 <br />8.1 <br />8.6 <br />7.9 <br />7.6 <br />Magnesium 8.6 7.6 Z6 7.7 4.1 4.2 3.9 3.3 <br />Sodium 12 11 11 13.2 12.2 13.7 13.3 13 <br />Volatile Organic Compounds (U&M <br />Trichloroethene (TCE) <br /><0.36 <br /><0.36 <br /><0.36 <br /><0.13 <br />W.13 <br /><0.13 <br /><O.13 <br /><0.13 <br />IJ-Dichioroethene <br /><0.24 <br /><0.24 <br /><0.24 <br /><0.39 <br /><0.39 <br /><0.39 <br /><0.39 <br /><0.39 <br />Chloroform <br /><0.37 <br /><0.37 <br /><0.37 <br /><0.20 <br /><0.20 <br /><0.20 <br /><0.20 <br /><0.20 <br />Benzene <br /><0.28 <br /><0.28 <br /><0.28 <br /><0.17 <br /><O.17 <br /><0.17 <br /><0.17 <br /><0.17 <br />m/p-Xylene <br /><0.38 <br /><0.38 <br /><0.38 <br />NR <br />NR <br />NR <br />NR <br />NR <br />Chlorobenzene <br /><0.32 <br /><0.32 <br /><0.32 <br />40.16 <br /><O.16 <br /><0.16 <br /><O.16 <br /><0.16 <br />Methylene Chloride <br /><0.23 <br /><0.23 <br /><0.23 <br /><0.48 <br /><0.48 <br /><0.48 <br /><0.48 <br /><0.48 <br />Acetone <br />(0.90•) <br /><0.52 <br /><0.52 <br />(3.7") <br /><1.8 <br /><1.8 <br /><1.8 <br />43" <br />Napthalme <br /><0.93 <br /><0.93 <br /><0.93 <br /><0.24 <br /><0.24 <br /><0.24 <br /><0.24 <br /><0.24 <br />Methyl ter -butyl ether <br /><0.36 <br /><0.36 <br /><0,36 <br /><0.32 <br /><0.32 <br /><0.32 <br /><0.32 <br /><0.32 <br />Toluene <br /><0.32 <br /><0.32 <br /><0.32 <br /><0.22 <br /><0.22 <br /><0.22 <br /><0.22 <br /><0.22 <br />1,4 -Dichlorobenzene <br /><0.46 <br /><0.46 <br /><0.46 <br /><0.14 <br /><O.14 <br /><0.14 <br /><O.14 <br /><O.14 <br />Tetrachloroethene <br /><0.44 <br /><0.44 <br /><0.44 <br /><0.19 <br />40.19 <br /><O.19 <br /><O.19 <br /><0.19 <br />2-Butanone <br /><O.14 <br /><O.14 <br />®.14 <br /><0.92 <br /><0.92 <br /><0.92 <br /><0.92 <br /><0.92 <br />1,3-Dichloropropane <br />®.40 <br /><0.40 <br /><0.40 <br /><0.12 <br /><0.12 <br />40.12 <br /><O.12 <br /><0.12 <br />LM10romataane <0.18 <u.18 <0.18 (U.28*) <0.25 <0.25 <0.25 <0.25 <br /><0.2 <0.2 <0.2 <br />Carbon disulfide <0.11 <0.11 <0.11 <br />1,2,4-Trimethylbenzene <0.18 <0.18 <0.18 <0.23 40.23 <0.23 <0.23 <0.23 <br />1,3,5-Trimethvlbenzene <0.28 <0.28 <0.28 <0.20 <0.20 <0.20 <0.20 <0.20 <br />Constituents of Concern Parameters <br />Semivolatile Oceanic Compounds (EPA Method 3520/8270) <br />All Compounds NR NR ND NR NR NR NR NR <br />OritanochImine Pesticides and Polychlorinated Bipheml's <br />(EPA Method 3510/8080) <br />All Compounds NR NR ND NR NR NR NR NR <br />" - Trace Concentration <br />[t J 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 />ND = Not Detected <br />NM = Not Measured <br />NR = Not Required <br />n:\cmtsuking\data\6ared\projects\xds\gmr\79\791289\FHOI 1207gl <br />