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HISTORICAL SUMMARY OF MONITORING RESULTS <br /> GROUNDWATER <br /> HARNEY LANE SANITARY LANDFILL <br /> MW-3 <br /> Units:mg/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 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 <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 8/1195 11/2!95 2/26/96 4/30/96 9/3/96 <br /> Monitoring and Field Parameters <br /> General Water Ouality Parameters <br /> Temperature(°C) NR NR NR NR NR NR NR NR NR 19.3 19.2 19.2 22.2 20.0 17.6 21.1 20.7 <br /> Electrical Conductive (umhos/cm) 250 226 256 233 301 225 193.2 238 280 256 222 247 257 241 225 235 277 <br /> pH(units) 7.41 7.29 7.56 7.23 7.41 6.78 6.9 7.05 7.33 7.23 7.22 7.37 7.30 6.95 7.19 6.86 7.11 <br /> Turbidity(NTU) NR NR NR NR NR NR NR NR NR 1.5 2.0 2.0 9 1.1 1.4 0.8 8 <br /> Total Dissolved Solids 240 240 200 200 210 200 200 210 210 197 260 200 170 200 200 190 610 <br /> Chloride 11 12 11 11 12 15 12 10 11 6.1 11 8.5 14 12 11 12 11 <br /> Nitrate-Nitrogen 1.4 15 14 15 15 13 13 12 15 NR trace 15 16 13 14 12 13 <br /> Sulfate NR NR NR <5 NR NR NR <8 NR 2.4 4 5.7 trace trace 5 4.8 5 <br /> Volatile Organic Compounds(ug/I) <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 <0.3 <0,5 <br /> Chlorobenzene <br /> 1,2-Dichlorobenzene <br /> 1,4-Dichlorobenzene <br /> Dichlorodifluoromethane NR NR NR <1 NR <I <1 <I <1 <1 <0.49 <0.49 <0.3 <0.3 <0.2 <0.4 <0.3 <br /> 1,2-Dichloropropane NR NR NR <0.5 NR <0.5 <0.5 <0.5 <0,5 <1 <0.31 <0.31 <0.5 <0.5 <0 1 <03 <05 <br /> Methylene Chloride <br /> Tetrachloroethene NR NR NR <0.5 NR <0.5 <0.5 <0.5 <0.5 NR <0.44 <0.44 <03 <03 <0.3 <03 <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 1-18-99 to present) <br /> '=Trace Concentration <br /> NR=Not Requested. <br /> MW-3;Printed:3/22/2007 2 of 10 <br />