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TABLE 1 <br /> FOOTHILL SANITARY LANDFILL <br /> THIRD QUARTER 2000 GROUNDWATER MONITORING RESULTS <br /> (Units mg/1 unless noted) <br /> ampling Designation MW-1 MW-2 MW-3 Groundwater <br /> 7/13/00 7/13/00 7/13/00 Concentration <br /> Sampling Date Limits <br /> Ouarterly Monitoring and Field Parameters <br /> Top of Well Casing Elevation 256.25 269.95 318.32 -- <br /> Depth to Groundwater 202.85 221.84 268.65 <br /> Groundwater Elevation 53.4 48.11 49.67 <br /> emperature (°C) (field) 20.5 20.5 21.7 NR <br /> spOcal Conductivity (US/cm) 240 202 272 NE(1) <br /> pH (units) (field) 8.50 8.47 8.23 6.58-8.93 <br /> urbidity(NTU) (field) 0.49 0.67 0.55 184.8 <br /> otal Dissolved Solids 186 162 188 255.4 <br /> Chloride 6.03 6.98 9.60 NE(1) <br /> Sulfate 6.48 3.90 7.62 NE(1) <br /> Nitrate-Nitrite Nitrogen 2.28 2.80 3.36 NE(1) <br /> Ug <br /> oVile Organic Compounds <br /> ceto//ne ND 2.09* ND detect <br /> richloroethene ND ND 0.285* detect <br /> Napthalene ND 0.11* ND detect <br /> 1,1-Dichloroethene ND ND 0.0795* detect <br /> NR=Not Required <br /> NE=Not Established <br /> (1)False positive rate greater than 5% <br /> ND=Not Detected <br /> Mw-1 =Upgradient(background)well <br /> * =trace concentration estimated value <br /> 8 <br />