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Table 2 <br /> Second Semester 2013 (3rd Quarter 2013) Groundwater Monitoring Results <br /> Foothill Sanitary Landfill <br /> (Units mg/I unless noted) <br /> Sampling Designation MW-1A MW-2R I MW-3 MW-4 MW-5 Conc. <br /> Sampling Date 8/21/13 7/31/13 7/31/13 1 7/31/13 7/31/13 Limits <br /> Monitoring and Field Parameters <br /> Elevations Leet <br /> TOC Elevation NA 299.62 320.75 341.57 256.52 NR <br /> Depth to Groundwater 233.00 257.15 274.64 287.31 218.44 NR <br /> Groundwater Elevation NA 42.47 46.11 54.26 38.08 NR <br /> General Water Quality Parameters <br /> Temperature -C field 21.0 24.7 21.1 23.2 20.8 NR <br /> pH (units)(field) 8.04 7.81 8.21 7.41 7.71 5.8-8.5 <br /> Electrical Conductivity 301.1 204.9 267.8 267.9 261.6 710 <br /> (uS/cm)(field <br /> Turbidity(NTU)(field) 37.8 12.7 16.8 16.9 17.8 52 <br /> Constituents of Concern <br /> Calcium 17 15 22 22 21 25 <br /> Magnesium 8.7 8.1 12 11 11 12 <br /> Sodium 30 12 16 14 14 17 <br /> Potassium 3.4 3.1 3.5 3.9 3.5 12 <br /> Bicarbonate Alkalinity as 130 99 140 130 120 130 <br /> HCO3 <br /> Carbonate Alkalinity as ND ND ND ND ND 8 <br /> CaCO3 <br /> Chloride 110 5.5 8.9 6.5 8.8 13 <br /> Nitrate as Nitrogen 1.6 2.8 2.5 1.8 1.9 1 12 <br /> Sulfate 16 1.7 6.3 8.2 8.6 15 <br /> Total Dissolved Solids 230 150 210 230 200 360 <br /> Volatile Organic Compounds 82606 u /L <br /> All Compounds I ND I ND ND ND I 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 /> LWA 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 /> Foothill Sanitary Landfill 17 Department of Public Works/Solid Waste <br /> 2°d Semester and Annual 2013 Groundwater Monitoring County of San Joaquin-January 31,2014 <br />