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STAL R O UL <br /> GROUNDWATER <br /> HARNEY LANE SANITARY LANDFILL <br /> MW-4 <br /> Units:mg/1,unless noted <br /> Sample Designation MW-4 MW-4 MW-4 MW4 MW-4 MW4 MW-4 MW-4 MW4 MW-4 MW-4 MW4 MW-4 MW4 MW-4 MW-4 MW-4 <br /> Sampling Date 8/3/92 11/2/92 2/1/93 5/3/93 7/19/93 11/8/93 2/1/94 4/29/94 8/1/94 11/28/94 2/1/95 5/4/95 8/1/95 11/2/95 2/26/96 4/30/96 9/3/96 <br /> Monitoring and Field Parameters <br /> General Water Quality Parameters <br /> Temperature('C) NR NR NR NR NR NR NR NR NR 19.5 19.5 22.3 24.5 19.6 16.0 21.5 22.5 <br /> Electrical Conductivity(umhos/cm) 979 980 722 1010 839 678 642 766 801 776 790 1023 944 723 773 975 705 <br /> pH(units) 7.24 7.08 8.01 6.91 7.63 7.1 7.44 6.88 8.07 6.96 7.55 7.16 7.45 7.56 7.58 6.72 7.30 <br /> Turbidity(NTU) NR NR NR NR NR NR NR NR NR 8.6 8.6 23 26 4.0 21 34.2 137 <br /> Total Dissolved Solids 660 660 610 650 580 510 570 640 670 569 630 600 500 560 600 610 480 <br /> Chloride 120 120 130 120 120 140 120 120 130 130 140 16[1] 98 130 120 120 120 <br /> Nitrate-Nitrogen 1.8 1.8 1.9 1.7 2 1.8 1.4 1.5 1.2 NR trace 1.8 2.0 1.6 1.7 1.5 1.8 <br /> Sulfate NR NR NR 12 NR NR NR 18 NR 7.1 16 trace 13 14 12 14 13 <br /> Volatile Organic Compounds NO) <br /> Benzene <br /> Carbon Tetrachloride NR NR NR <0.5 NR <0.5 <0.5 <0.5 <0.5 NR <0.44 <0.44 <0.5 <0.5 <0.1 <03 <0.5 <br /> Chlorobenzene <br /> 1,2-Dichlorobenzene <br /> 1,4-Dichlorobenzene <br /> Dichlorodifluoromethane NR NR NR <1 NR <1 1 <1 <1 <1 <0.49 <0.49 <0.3 <0.3 <0.2 4 <0.3 <br /> 1,2-Dichloropropane NR NR NR <0.5 NR <0.5 <0.5 <0.5 <0.5 <I <0.31 <0.31 <0.5 <0.5 <0.I <0.3 <0.5 <br /> Methylene Chloride <br /> Tetrachloroethene NR NR NR <0.5 NR <0.5 <0.5 <0.5 <0.5 NR <0,44 <0.44 <0.3 <0.3 <0.3 trace <0.3 <br /> Trichloroethane <br /> Toluene <br /> Trichlorofluoromethane <br /> Xylenes(Total) <br /> Only organic compounds detected in one or more samples are listed. <br /> [I]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 I-18-99 to present) <br /> •=Trace Concentration <br /> NR=Not Requested. <br /> MW-4;Printed:6/28/2007 2 of 10 <br />