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M M M M M M M M M M ® M M M <br /> HISTORICAL SUMMARY OF MONITORING RESULTS <br /> GROUNDWATER <br /> HARNEY LANE SANITARY LANDFILL <br /> MW-1 <br /> Units:E!O,unless noted <br /> Sample Designation MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 MW-1 Mw-1 MW-1 Mw-1 <br /> Sampling Date 5/26/05 7/25/05 10/12/05 1/18106 4/25/06 7/14/06 10/18/06 1/10/07 <br /> Monitoring and Field Parameters <br /> General Water Quality Parameters <br /> Temperature(°C) 19.8 21.6 19.5 15.8 I8.3 21.6 21.2 18.8 <br /> Electrical Conductivity(umhos/cm) 336 453 397 411 324 336 673 348 <br /> pH(units) 7.37 7.58 7.16 6.88 6.77 7.27 6.68 7.84 <br /> Turbidity(NTIJ) 7.41 9.7 21.4 28.8 10.4 4.7 20.9 6.7 <br /> Total Dissolved Solids 330 260 330 320 286 246 280 260 <br /> Chloride 10 9 10 8 9.6 10 11 9.7 <br /> Nitrate-Nitrogen NR NR 1.8 NR NR NR 2.4 NR <br /> Sulfate NR NR II NR NR NR 9.3 NR <br /> Volatile Organic Compounds fug11) <br /> Benzene <0.16 <0.16 <0.16 <0.16 <0.12 <0.12 <0.42 <0.42 <br /> Carbon Tetrachloride <0.32 <0.32 <0.32 <0.32 <0.18 <0.18 <0.48 <0.48 <br /> Chlorobenzene <015 <0.15 <0.15 <0.15 <0.15 <0.15 <0.36 <0.36 <br /> 1,2-Dichlorobenzene <0.20 <0.20 <0.20 <0.20 <0.14 <0.14 <0.36 <0.36 <br /> 1,4-Dichlorobenzene <0.16 <0.16 <0.16 <0.16 <0.11 <0.11 <0.37 <0.37 <br /> Dichlorodifluoromethane <0.36 <0.36 <0.36 <0.36 <0.36 <0.36 <0.48 <0.48 <br /> 12-Dichloropropane <014 <014 <014 <0.14 <0.17 <0.17 <0.40 <0.40 <br /> Methylene Chloride <0A0 <0.40 <0.40 <0.40 <0.15 <0.15 <0.43 <0.43 <br /> Tetrachloroethene <0.23 <0.23 <0.23 <0.23 <0.22 <0.22 <0.38 <0.38 <br /> Trichloroethane <0.10 <0.10 <0.38 <0.38 <br /> Toluene <0.14 <0.14 <0.14 <0.14 <0.14 <0.14 <0.36 <0.36 <br /> Trichlorofluoromethane <0.41 <0.41 <0.41 <0.41 <0.14 <0.14 <0.60 <0.60 <br /> Xylenes(Total) <0.36 <0.36 <0.36 <0.36 <0 14 <0.14 <1.1 <1.1 <br /> Only organic compounds detected in one or more samples are listed. <br /> t 1]This analytical result appears to be anomalous and therefore was not used in the statistical evaluation procedures. <br /> {1}Parameter also detected in one or more quality control blanks(indicated for data from 1-18-99 to present) <br /> *=Trace Concentration <br /> NR=Not Requested <br /> MW-1;Printed:3/22/2007 5 of 10 <br />