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HISTORICAL SUMMARY OF MONITORING RESULTS <br /> GROUNDWATER <br /> HARNEY LANE SANITARY LANDFILL <br /> MW-2 <br /> Units:mg/l,unless noted <br /> Sample Designation MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2* MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 MW-2 <br /> Sampling Date 8/3/92 11/2/92 2/1/93 5/3/93 7/19/93 11/8/93 2/1/94 4/28/94 4/28/94 8/1/94 11/28194 2/1/95 5/4/95 8/1/95 11/2/95 2/26/96 4/30/96 <br /> Monitoring and Field Paranw4ers <br /> General Water OtralV Parameters <br /> Temperature('C) NR NR NR NR NR NR NR NR NR NR 2o,i 20.1 21.8 23.8 20,1 17.5 21.9 <br /> Electrical Conductivity(umhos/cm) 398 377 396 366 447 322 255 301 296 350 297 283 304 303 325 308 302 <br /> pH(units) 7.06 7.07 7.58 7.02 777 6.87 6.71 712 7.11 7.61 7.09 7.19 7.27 7.25 6.89 706 6.80 <br /> Turbidity(NTU) NR NR NR NR NR NR NR NR NR NR 1.0 1.0 2.0 11 1.3 L5 OJ <br /> Total Dissolved Solids 390 320 270 250 260 240 550 240 NR 240 202 220 240 200 230 240 220 <br /> Chloride 18 18 19 18 18 20 25 14 NR 17 8.0 16 30 19 18 19 20 <br /> Nitrate-Nitrogen 1.7 1.7 1.7 1.8 1.8 1.5 1.3 1.5 NR 1.6 NR trace 1.7 1.7 <0.03 1.5 1.3 <br /> Sulfite NR NR NR <5 NR NR NR <8 NR NR 1.6 3 trace trace trace 4 3.2 <br /> Volatile Organic Comnamds(uQ/i) <br /> Benzene <br /> Carbon Tetrachloride NR NR NR <0.5 NR <0.5 <0.5 <0.5 <0.5 <0.5 NR <0.5 <0.44 trace <0.5 <0.I <0.3 <br /> Chlorobenzene <br /> 1,2-Dichlorobenzene <br /> 1,4-Dichlorobenzene <br /> Dichlorodifluoromethane NR NR NR <1 NR <1 3.2 2 2.9 2 <1 1.9 trace trace <0.3 3* 2 <br /> 1,2-Dichloropropane NR NR NR <0.5 NR <0.5 <0,5 <0.5 NR <0.5 <i <0.5 <0.31 <0.5 <0.5 0.4* <0.3 <br /> Methylene Chloride <br /> Tetrachloroethene NR NR NR <0.5 NR <0.5 0.8 0.5 0.7 0.6 NR 0.6 <0.44 <0.3 trace 0.7* 0.5* <br /> Toluene <br /> Trichloroethane <br /> Trichlorofluoromethane <br /> Xylenes(Total) <br /> Only organic compounds detected in one or more samples are listed. <br /> {1 j This analytical result appears to be anomalous and therefore was not used in the statistical evaluation procedures. <br /> (I)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 /> RAW-2;Printed:3/22/2007 2 of 10 <br />