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Table 2 <br /> Second Semester 2012 (3rd Quarter 2012) Groundwater Monitoring Results <br /> Foothill Sanitary Landfill <br /> (Units mg/I unless noted) <br /> Sampling Designation MW-1 MW-2R MW-3 MW-4 MW-5 Conc. <br /> Sampling Date 7/24/12 7/24/12 7/24/12 7/24/12 7/24/12 Limits <br /> Monitoring and Field Parameters <br /> Elevations feet <br /> TOC Elevation 258.43 299.62 320.75 341.57256.52 NR <br /> Depth to Groundwater 208.44 256.27 273.70 286.22 217.66 NR <br /> Groundwater Elevation 49.99 43.35 47.05 55.35 38.86 NR <br /> General Water Quality Parameters <br /> Temperature -C field 18.1 22.5 20.1 21.6 20.7 NR <br /> H units field 6.76 7.19 7.23 6.91 7.61 5.8-8.9 <br /> Electrical Conductivity 764.3 163.4 331.7 361.4 323.1 710 <br /> uS/cm field <br /> Turbidity NTU field 49.7 11.7 18.7 67.9 16.7 65 <br /> Constituents of Concern <br /> Calcium NS 15 21 22 21 25 <br /> Magnesium NS 8.1 12 11 11 17 <br /> Sodium NS 12 17 15 15 17 <br /> Potassium NS 3.3 3.6 4.1 3.6 4.5 <br /> ® Bicarbonate Alkalinity as NS 97 130 130 120 160 <br /> HCO3 <br /> Carbonate Alkalinity as NS ND ND ND ND 0.81 <br /> CaCO3. <br /> Chloride NS 5.0 8.3 6.2 8.1 13 <br /> Nitrate as Nitrogen NS 2.8 2.7 1.8 1.8 12 <br /> Sulfate NS 1.6 5.8 8.3 8.4 11 <br /> Total Dissolved Solids NS 170 230 210 210 270 <br /> Volatile Organic Compounds 82608 u /L <br /> All Compounds I ND I ND ND ND ND detect <br /> NS = Not Sampled, water level too low for sampling <br /> NE = Not Established <br /> ND= Not Detected <br /> NM = Not Measured <br /> NR= Not Required <br /> I = Insufficient data for statistical analysis <br /> *= concentration (estimated value) <br /> Bold values indicate VOC detections <br /> Underlined values indicate concentration limit exceedances <br /> LW-1 sampling/testing is not part of the monitoring program <br /> [1] Not established due to>50% non-detects <br /> {1} Parameter also detected in one or more quality control blanks. <br /> MW-1 was not sampled this semester because the pump would not pump any water <br /> Foothill Sanitary Landfill 14 Department of Public Works/Solid Waste <br /> 2"d Semester and Annual 2012 Groundwater Monitoring County of San Joaquin-January 15,2013 <br />