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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />FOOTIIILL SANITARY LANDFILL. <br />Units: m&4, unless noted <br />Sample Designation <br />Sam plinBDate <br />LW -1 <br />11/28/94 <br />LW -1 <br />5/30/03 <br />LW -1 <br />8/14/03 <br />LW -1 <br />1/22/04 <br />LW -1 <br />7/21/04 <br />LW -I <br />2/2/05 <br />LW -1 <br />7/27/05 <br />LW -1 <br />3/28/06 <br />LW -I <br />7/27/06 <br />Monitoring and Field Parameters <br />General Water Quality Parameters <br />Temperature (°C) (field) <br />17.3 <br />21.2 <br />19.1 <br />14.7 <br />21.6 <br />16.1 <br />20.4 <br />14.9 <br />19.6 <br />Chloride <br />9.5 <br />10 <br />12 <br />6.6 <br />11 <br />9 <br />11 <br />8.4 <br />11 <br />Nitrate -Nitrogen <br />1.2 <br />1.3 <br />1.3 <br />3.3 <br />1.1 <br />1.4 <br />1.1 <br />1.1 <br />I <br />Total Dissolved Solids <br />182 <br />190 <br />180 <br />200 <br />210 <br />180 <br />200 <br />199 <br />228 <br />Sulfate <br />15 <br />16 <br />19 <br />5.5 <br />16 <br />15 <br />16 <br />14 <br />16 <br />pH (std. units) (field) <br />7.68 <br />7.57 <br />6.86 <br />6.94 <br />7.14 <br />7.03 <br />7.21 <br />6.81 <br />6.8 <br />Electrical Conductivity (umhos/cm) (field) <br />313 <br />269 <br />171 <br />174 <br />119,7 <br />212 <br />98 <br />143 <br />146 <br />Turbidity (NTU) (field) <br />1.6 <br />0.6 <br />2.7 <br />3.74 <br />7.31 <br />4.7 <br />6.6 NR <br />6.1 <br />Calcium <br />28 <br />24 <br />23 <br />23 <br />23.9 <br />27.4 <br />29.7 <br />29.2 <br />Potassium <br /><0.92 <br /><0.92 <br />3.6 <br />4.0 <br />4.8 <br />10.2 <br />13.2 <br />11.6 <br />Magnesium <br />9.8 <br />9.9 <br />10 <br />9.8 <br />10.0 <br />4.6 <br />5.7 <br />4.6 <br />Sodium <br />9.8 <br />12 <br />12 <br />12 <br />12.4 <br />12.8 <br />14.6 <br />13.9 <br />Volatile Organic Compounds (upLjl <br />Trichloroethene (TCE) <br /><0.36 <br /><0.36 <br /><0.36 <br /><0.36 <br /><0.13 <br /><0.13 <br /><0.13 <br /><0.13 <br />I,I-Dichlomethene <br /><0.24 <br /><0.24 <br /><0.24 <br /><0.24 <br /><0.39 <br /><0.39 <br /><0.39 <br /><0.39 <br />Chloroform <br /><0.37 <br /><0.37 <br /><0.37 <br /><0.37 <br /><0.20 <br /><0.20 <br /><0.20 <br /><0.20 <br />Benzene <br /><0.28 <br /><0.28 <br /><0.28 <br /><0.28 <br /><0.17 <br /><0.17 <br /><0.17 <br /><O.17 <br />m/p-Xylene <br /><0.38 <br /><0.38 <br /><0.38 <br /><0.38 <br />NR <br />NR <br />NR <br />NR <br />Chlorobenzene <br /><0.32 <br /><0.32 <br /><0.32 <br /><0.32 <br /><O.16 <br /><O.16 <br /><O.16 <br /><O.16 <br />Methylene Chloride <br /><0.23 <br />(0.28") <br /><0.23 <br /><0.23 <br /><0.48 <br /><0.48 <br /><0.48 <br /><0.48 <br />Acetone <br /><0.52 <br />(1.2") <br /><0.52 <br /><0.52 <br /><1.8 <br /><1.8 <br /><1.8 <br /><1.8 <br />Napthalene <br /><0.93 <br /><0.93 <br /><0.93 <br /><0.93 <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 /><0.36 <br /><0.32 <br /><0.32 <br /><0.32 <br /><0.32 <br />Toluene <br /><0.32 <br /><0.32 <br /><0.32 <br /><0.32 <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 /><0.46 <br /><O.14 <br /><O.14 <br /><0.14 <br /><D.14 <br />Tetrachloroethene <br /><0.44 <br /><0.44 <br /><0.44 <br /><0.44 <br /><O.19 <br /><O.19 <br /><O.19 <br /><O.19 <br />2-Butanone <br /><O.14 <br /><O.14 <br /><O.14 <br /><O.14 <br /><0.92 <br /><092 <br /><0.92 <br /><0.92 <br />1,3-Dichloropropane <br /><0.40 <br /><0.40 <br /><0.40 <br /><0.40 <br /><O.12 <br /><O.12 <br /><O.12 <br /><O.12 <br />Chloromethane <br /><0.18 <br /><0.18 <br /><0.18 <br /><0.18 <br /><0.25 <br /><0.25 <br /><0.25 <br /><0.25 <br />Chloroethane <br /><D.2 <br /><0.2 <br />Carbon disulfide <br /><O.I I <br /><0.11 <br />1,2,4-Tnmethylbenzene <br /><0.18 <br /><0.18 <br /><0.18 <br /><0.18 <br /><0.23 <br /><0.23 <br /><0.23 <br /><0.23 <br />1,3,5-Trimethylbenzene <br /><0.28 <br /><0.28 <br /><0.28 <br /><0.28 <br /><0.20 <br /><0.20 <br /><0.20 <br /><0.20 <br />Constituents of Concern Parameters <br />Semivolatile Organic Compounds (EPA Method 3520/8270) <br />an Lompounas ND NR NR NR ND NR NR NR NR <br />Organochlorine Pesticides and Polychlorinated Biohenvl's <br />(EPA Method 3510/8080) <br />All Compounds ND NR NR NR ND NR NR NR NR <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 />ND = Not Detected <br />NM = Not Measured <br />NR = Not Required <br />n:\co ata\sh cts\xl 9128 07g1 M M M ® M M M <br />