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HISTORICAL SUMMARY OF MONITORING RESULTS <br /> GROUNDWATER <br /> HARNEY LANE SANITARY LANDFILL <br /> MW-1 <br /> Units:mg/l,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 NfW-1 MW-i MW-1 MW 1 MW-1 <br /> Sampling Date 8/3/92 11/2/92 2/1/93 5/3/93 7/19/93 1118/93 2/1/94 4/29/94 8/1/94 11/28/94 2/1/95 5/3/95 811/95 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 18.1 19.5 21.2 24.0 19.1 17.7 22.0 214 <br /> Electrical Conductivity(umhos/cm) 225 220 230 204 356 203 175.9 212 289 244 215 224 243 231 222 238 269 <br /> pH(units) 7.45 7.26 7.75 7.4 7.76 7.02 7.37 6.98 7.93 7.16 7.24 7.18 7.27 6.94 7.33 6.92 700 <br /> Turbidity ffM NR NR NR NR NR NR NR NR NR 42.6 10.2 22 25 2.0 29 7.2 86 <br /> Total Dissolved Solids 240 270 210 200 250 220 210 240 210 196 480 220 170 200 200 180 210 <br /> Chloride 9 8 9 8 8 13 I1 10 8 9.9 8 20 9 9.3 9 11 9 <br /> Nitrate-Nitrogen 6 4.5 4.3 4.5 4.2 4.7 1.7 1.7 3.9 NR 0.4 3.3 4.0 <0.03 3 2.7 3.6 <br /> Sulfate NR NR NR 15 NR NR NR <8 NR 14 9 trace 11 12 8 7.2 11 <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 <0.3 <0.5 <br /> Chlorobenzene <br /> 1,2-Dichlorobenzene <br /> I,4-Dichlorobenzene <br /> Dichlorodifluoromethane NR NR NR <i NR <1 <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 <03 <0.5 <0.5 <1 <0.31 <0.31 <0.5 <0.5 <0.1 <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 <03 <0.3 <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 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 /> r=Trace Concentration <br /> NR=Not Requested. <br /> MW-1; Printed:3/22/2007 2 of 10 <br />