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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />FOOTHILL SANITARY LANAFILL <br />Units: me/l, unless noted <br />Sample Designation MW -3 MW -3 MW -3 MW -3 MW -3 MW -3 MW -3 MW -3 MW -3 MW -3 <br />Sampling Date 727/06 1/31/07 723/07 2/6/08 7/31/08 1/15/09 8/18/09 10/8/09 112/09 2/4/10 <br />Monitorine and Field Parameters <br />Temperature (°C) (field) <br />21.5 <br />16.8 <br />21.2 <br />17.7 <br />21.7 <br />19.3 <br />20.4 <br />18.1 <br />20.2 <br />17.2 <br />Chloride <br />10 <br />11 <br />9.6 <br />9.58 <br />9.21 <br />9.73 <br />8.9 <br />NA <br />NA <br />7.8 <br />Nitrate -Nitrogen <br />3 <br />6 <br />2.9 <br />2.87 <br />2.61 <br />2.92 <br />2.7 <br />NA <br />NA <br />2.8 <br />Total Dissolved Solids <br />229 <br />180 <br />200 <br />140 <br />130 <br />220 <br />210 <br />NA <br />NA <br />_ <br />220 <br />Sulfate <br />6 <br />6.3 <br />6 <br />6.41 <br />6.04 <br />6.51 <br />6.3 <br />NA <br />NA <br />6.1 <br />pH (std units) (field) <br />7.14 <br />7.34 <br />7.22 <br />7.32 <br />7.26 <br />7.68 <br />7.39 <br />7.28 <br />714 <br />7.37 -- --- <br />Electrical Conductivity (umhosi m) (field) <br />341 <br />358 <br />258 <br />378 <br />254.9 <br />270.4 <br />268.7 <br />274.3 <br />277.3 <br />264.1 <br />Turbidity (NTU) (field) <br />12.7 <br />11.8 <br />11.3 <br />11.3 <br />7.7 <br />7.64 <br />11.1 <br />283 <br />16.3 <br />12.3 <br />Benzene <0. 17 10.17 <0.17 10.30 <0.33 <0.33 <0.18 NA NA <0.086 <br />_ Bromochloromethane <br />_ Bromodichloromethane <br />_ Bromoform <br />_ Bromomethane <br />Carbon Tetrachloride <br />_ 1,2-Dibromo-3-chloropropane <br />_ 1,2-Dibromoethane (EDB) <br />Dibromomethane <br />NA NA NA NA <0.37 <0.32 <0.35 NA NA <br />NA <br />NA <br />NA <br />NA <br /><0.30 <br /><0.28 <br /><0.30 <br />NA <br />NA <br /><0.12 <br />NA <br />NA <br />NA <br />NA <br /><0.31 <br /><0.31 <br />10.24 <br />NA <br />NA <br /><0.23 <br />NA <br />NA <br />NA <br />NA <br /><0.40 <br /><0.33 <br />10.21 <br />NA <br />NA <br /><0.20 <br />NA <br />NA <br />NA <br />NA <br /><0.46 <br /><0.46 <br />10.19 <br />NA <br />NA <br />10.18 <br /><0.16 <br /><0.16 <br /><0.16 <br /><0.36 <br /><0.39 <br /><0.39 <br />NA <br />NA <br />NA <br /><0.081 <br /><0.23 <br /><0.23 <br /><0.23 <br /><0.38 <br /><0.38 <br /><0.31 <br /><0.25 <br />NA <br />NA <br /><0.11 <br /><0.20 <br /><0.20 <br /><0.20 <br /><0.33 <br /><0.33 <br /><0.33 <br /><0.23 <br />NA <br />NA <br />10.072 <br /><0.25 <br /><0.25 <br /><0.25 <br /><0.41 <br /><0.41 <br /><0.36 <br /><0.20 <br />NA <br />NA <br /><0.11 <br />NA <br />NA <br />NA <br />NA <br /><0.32 <br /><0.31 <br /><0.23 <br />NA <br />NA <br /><0.077 <br />NA <br />NA <br />NA <br />NA <br /><0.69 <br /><0.69 <br /><0.46 <br />NA <br />NA <br /><0.44 <br />NA <br />NA <br />NA <br />NA <br /><0.39 <br /><0.39 <br /><0.29 <br />NA <br />NA <br /><0. 16 <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br /><0.38 <br /><0.37 <br />NA <br />NA <br /><0.19 <br />_ 1,2 -Dichlorobenzene <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br /><0.38 <br /><0.15 <br />NA <br />NA <br /><0.068 - <br />1,3 -Dichlorobenzene <br />NA <br />NA <br />NA <br />NA <br /><0.37 <br /><0.37 <br /><0.15 <br />NA <br />NA <br /><0.060 <br />1,4 -Dichlorobenzene <br /><0.14 <br /><0.14 <br /><0.14 <br /><0.34 <br /><0.38 <br /><0.38 <br /><0.16 <br />NA <br />NA <br /><0.083 <br />_ Dichlorodifluoromethane <br />NA <br />NA <br />NA <br />NA <br /><0.68 <br /><0.56 <br /><0.21 <br />NA <br />NA <br /><0.11 <br />1, 1 -Dichloroethane <br />NA <br />NA <br />NA <br />NA <br /><0.37 <br /><0.34 <br /><0.13 <br />NA <br />NA <br />10.081 <br />1,2-Dichloroethane (EDC) <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br /><0.38 <br /><0.24 <br />NA <br />NA <br /><0. 14 <br />1,1-Dichloroethene <br /><0.39 <br /><0.39 <br /><0.39 <br /><0.43 <br /><0.43 <br /><019 <br />0.42* <br />NA <br />NA <br /><0.12 <br />_cis-1,2-Dichloroethene <br />NA <br />NA <br />NA <br />NA <br /><0.36 <br /><0.34 <br /><0.32 <br />NA <br />NA <br /><0.11 <br />_trans-1,2-Dichloroethene <br />NA <br />NA <br />NA <br />NA <br /><0.41 <br /><0.33 <br /><0.14 <br />NA <br />NA <br /><0.097 <br />_ 1,2-Dichloropropane <br />NA <br />NA <br />NA <br />NA <br /><0.35 <br /><0.35 <br /><0.16 <br />NA <br />NA <br /><0. 12 <br />_cis-1,3-Dichloropropene <br />NA <br />NA <br />NA <br />NA <br /><0.30 <br /><0.29 <br /><0.19 <br />NA <br />NA <br /><0.098 <br />_trans-1,3-Dichloropropene <br />NA <br />NA <br />NA <br />NA <br /><0.35 <br /><0.35 <br /><0.13 <br />NA <br />NA <br /><0.079 <br />Ethylbenume <br />NA <br />NA <br />NA <br />NA <br /><0.43 <br /><0.43 <br /><0.14 <br />NA <br />NA <br /><0.12 <br />Hexachlorobutadiene <br />NA <br />NA <br />NA <br />NA <br /><0.65 <br />10.65 <br /><0.26 <br />NA <br />NA <br />_ <br /><0.12 <br />Methylene Chloride <br /><0.48 <br /><0.48 <br /><0.48 <br /><0.30 <br /><0.30 <br /><0.29 <br /><0.28 <br />NA <br />NA <br /><0.28 <br />Methyl ter -butyl ether <br /><0.32 <br /><0.32 <br /><0.32 <br /><0.70 <br /><0.72 <br />10.72 <br />NA <br />NA <br />NA <br />_ <br /><0.11 <br />Napthalene <br /><0.24 <br /><0.24 <br /><0.24 <br /><0.29 <br /><0.36 <br /><0.36 <br /><0.30 <br />NA <br />NA <br /><0.36 <br />_ Styrene <br />NA <br />NA <br />NA <br />NA <br /><032 <br /><0.32 <br /><0.18 <br />NA <br />NA <br /><0.093 <br />_ 1,1,1,2 -Tetrachloroethane <br />NA <br />NA <br />NA <br />NA <br /><0.38 <br /><0.38 <br /><0.14 <br />NA <br />NA <br /><0.II <br />1,1,2,2 -Tetrachloroethane <br />NA <br />NA <br />NA <br />NA <br /><0.35 <br /><0.35 <br /><0.28 <br />NA <br />NA <br /><0.14 <br />Tetrachloroethane (PCE) <br /><0.19 <br /><0.19 <br /><0.19 <br /><0.40 <br /><0.49 <br /><0.49 <br /><0.28 <br />NA <br />NA <br /><0.13 <br />Toluene <br /><0.22 <br /><0.22 <br /><0.22 <br /><0.32 <br /><0.40 <br /><0.40 <br /><0.12 <br />NA <br />NA <br /><0.093 <br />_ 1,2,4-Trichlorob--e <br />NA <br />NA <br />NA <br />NA <br /><0.36 <br /><0.36 <br /><0.31 <br />NA <br />NA <br /><0.17 <br />1,1,1-Triebloroethane(TCA) <br />NA <br />NA <br />NA <br />NA <br /><0.39 <br /><0.46 <br /><O.14 <br />NA <br />NA <br />_ <br /><0.081 <br />1,1,2 -Trichloroethane <br />NA <br />NA <br />NA <br />NA <br /><0.44 <br /><0.44 <br /><0.44 <br />NA <br />NA <br /><0.21 <br />Trichloroethene (TCE) <br />0.18* <br />10.13 <br />0.6 <br /><0.31 <br /><0.38 <br /><0.38 <br />1 <br />NA <br />NA <br />_ <br /><0.13 <br />_Trichlorofluoromethane <br />NA <br />NA <br />NA <br />NA <br /><0.59 <br /><0.47 <br />10.22 <br />NA <br />NA <br /><0.II <br />_ 1,2,3-Trichloropropane <br />NA <br />NA <br />NA <br />NA <br /><0.43 <br /><0.43 <br /><0.43 <br />NA <br />NA <br /><0.30 <br />_ Vinyl Chloride <br />NA <br />NA <br />NA <br />NA <br /><0.47 <br /><0.47 <br /><0.16 <br />NA <br />NA <br /><0.14 <br />Total Xylenes <br />NA <br />NA <br />NA <br />NA <br /><l.l <br /><1.1 <br /><0.53 <br />NA <br />NA <br /><0.26 <br />Acetone <br /><1.8 <br />6* <br />6.6* <br /><2.7 <br /><3.0 <br /><3.0 <br /><7.4 <br />NA <br />NA <br /><4.6 <br />