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TABLE 2 <br /> FOOTHILL SANITARY LANDFILL <br /> FIRST SEMESTER 2004 GROUNDWATER MONITORING RESULTS <br /> (Units mg/1 unless noted) <br /> Sampling Designation MW-1 MW-2R LWA MW-3 Conc. <br /> Sampling Date 1/22/2004 1/21/2004 1/22/2004 1/21/2004 Limit <br /> Monitoring and Field Parameters <br /> Elevations <br /> Top of Casing Elevation (ft) 254.69 296.24 317.35 NA <br /> Depth to Groundwater(ft) 205.24 254.09 270.96 NA <br /> � <br /> Groundwater Elevation ft49.45 42.15 46.39 NA <br /> General Water Quality Parameters <br /> Temperature CC)(field) 16.5 14 _ � ��`� 14.4 NA <br /> Chloride 9.5 7.1 11 9.6 <br /> Nitrate- Nitrogen 1.4 3.1 3.8 3.3 <br /> Total Dissolved Solids 180 180 210 240 <br /> Sulfate 15 2.3 7.7 8.7 <br /> pH (units)(field) 7.04 7.19 7.32 6.3-8.9 <br /> Electrical Conductivity(pS/cm)(field) 231 284 207 310' <br /> Turbidity(NTU)(field) 13.7 10.7 14.7 47 ' <br /> Carbonate ND ND ,. rar; ND 0.808 <br /> Bicarbonate 98 86 110 120 <br /> Calcium 13.7 15 z 21 TBD <br /> Magnesium 9.8 7.6e 11 TBD <br /> Potassium 2 2.4 2.8 TBD <br /> Sodium 11 11s 15 TBD <br /> Volatile Organic Compounds(uq/L) <br /> All Compounds ND ND ND detect <br /> 5 � <br /> 'Concentration Limit established using statistical analysis <br /> NA=Not Applicable <br /> ND=Not Detected <br /> NR=Not Required <br /> Exceedences are indicated in bold type. <br /> (X)Parameter also detected in one or more quality control blanks <br /> * Trace concentration(estimated value) <br /> s <br /> Foothill Sanitary Landfill Department of Public Works/Solid Waste <br /> 1 sr Semester 2004 Groundwater Monitoring County of San Joaquin-July 27,2004 <br />