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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 9/3/96 11/1/96 2/12/97 6/6/97 817/97 11/7/97 2/2/98 4/17/98 7/17/98 10/26/98 1/18/99 4/14/99 7/8/9910/18/99 1/21/00 4/25/00 7/13/00 <br /> Monitoring and Field Parameters <br /> General Water Quality Parameters <br /> Electrical Conductivity umhos/cm 354 311 300 299 238 307 291 350 329 290 294 311 302 286 271 298 302 <br /> H units 7.03 6.78 7.58 6.90 7.03 7.18 7.21 6.92 7.05 7.21 7.36 7.31 7.04 7.08 8.00 7.70 7.19 <br /> TurbidityNTU 12 0.2 6.2 8.7 0.7 0.2 1.7 2.9 1.10 0.80 0.59 1.10 0.99 0.82 0.16 0.21 1.27 <br /> Tem erature °C 21.5 20.7 18.7 19.5 22.9 71.7 19.3 24.7 21.7 19.7 19.4 22.4 21.2 20.5 20.3 20.7 22.5 <br /> Total Dissolved Solids 210 200 235 380 228 223 216 195 220 145 190 232 231 213 219 198 193 <br /> Chloride 19 16 18 21 16 18 22 22 20 17 19 21 18.0 16.7 16.7 17.7 16.9 <br /> Sulfate 4 NR NR NR 2.4 NR NR 3.2 NR NR NR NR NR 3.28 NR NR NR <br /> Nitrate-Nitrogen _ 1.2 NR NR NR 7.5 NR NR 1.7 NR NR NR NR NR 1.61 NR NR r <br /> Volatile Organic Compounds(ug/I) <br /> Acetone _ _ _ _---fie- _<0:5 <0.3 <0.3 <0 21 <0 21 <0.21 <0.21 _ <0 21 <0.06 <0.5 <0.95 <br /> Carbon Tetraclorid - -- ---- --- - ---- <0,23 <0.23 <0.07 <0.7 <0-.62----<'0.62 <br /> Chlorobenzene <br /> 1,2-Dichlorobenzene <0,99 <br /> 1,4-Dichlorobenzene <0.17 <0.17 <0.11 <1 <0.99 <br /> Dichlorodifluoromethane trace trace 2.4 0.43 NT <0.3 0.7 <0.3 15 <0.31 2.3 56 <0.31 1.04 <0.13 <6.76 <0.76 <br /> 1,2-Dichloro ro ane <0.5 <0.3 <0.3 0.27 NT <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 <0.22 0.207* <<2 <0:74 <0,74 <br /> 0.0585 <2 <1.88 <1.88 <br /> Methylene Chloride ---6-.8 <0.24 0.435* <0.5 <0.57 <0.57 <br /> Tetrachloroethene trace 0.64 0.32 NT <0.24 0.5 <0.24 0.55 1 <br /> Toluene 0.0631* <5 <0.54 <0.54 <br /> Trichlorofluoromethane <br /> Xylenes Total <br /> Only organic compounds detected in one or more samples are listed. <br /> [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 <br /> *=Trace Concentration <br /> NR=Not Requested. <br /> 5of8 <br />