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Table 2 <br /> First Semester 2010 (1St Quarter 2010) Groundwater Monitoring Results <br /> Foothill Sanitary Landfill <br /> (Units mg/I unless noted) <br /> Sampling Designation MWA MW-2R MW-3 MW-4 MW-5 Conc. <br /> Sampling Date 2/4/10 2/4/10 2/4/10 2/4/10 2/4/10 Limits <br /> Monitoring and Field Parameters <br /> Elevations feet <br /> TOC Elevation 258.43 299.62 320.75 341.57 256.52 NR <br /> Depth to Groundwater 207.09 255.07 272.23 284.38 216.45 NR <br /> Groundwater Elevation 51.34 44.55 48.52 57.19 40.07 NR <br /> General Water Quality Parameters <br /> Temperature -C field 18.3 19.5 17.2 17.9 20.9 NR <br /> H units field 7.51 7.24 7.37 7.24 7.83 5.8-9 <br /> Electrical Conductivity 230.1 197.1 264.1 264.9 254.7 440 <br /> (uS/cm)(field <br /> Turbidity NTU field) 9.7 6.9 12.3 31.4 7.4 88 <br /> Constituents of Concern <br /> Calcium 18 15 21 22 21 24 <br /> Magnesium 12 8.4 12 11 11 13 <br /> Sodium 13 12 17 15 15 17 <br /> Potassium 3 3.2 3.6 4.1 3.6 4.7 <br /> Bicarbonate Alkalinity as 110 97 130 130 120 180 <br /> HCO3 <br /> Carbonate Alkalinity as ND ND 3_1 ND ND 2.5 <br /> CaCO3 <br /> Chloride 4.6 4.9 7.8 5.8 7.1 8.5 <br /> Nitrate as Nitrogen 3.1 2.8 2.8 1.7 1.8 1.8 <br /> Sulfate 4.3 1.6 6.1 8.7 9 12 <br /> Total Dissolved Solids 190 180 220 210 210 260 <br /> Volatile Organic Compounds (8260B)(ug/L) <br /> Toluene 18 ND ND ND ND detect <br /> All Other Compounds ND ND ND ND ND detect <br /> NE=Not Established <br /> ND=Not Detected <br /> NM=Not Measured <br /> NR=Not Required <br /> I=Insufficient data for statistical analysis <br /> *=Trace concentration(estimated value) <br /> Bolded values indicate VOC detections,underline values indicate concentration limit exceedances <br /> MW-1 not enough water for sampling this semester <br /> LW-1 sampling/testing is not part of the monitoring program <br /> [1]Not established due to>50%non-detects <br /> 111 Parameter also detected in one or more quality control blanks. <br /> Foothill Sanitary Landfill 14 Department of Public Works/Solid Waste <br /> 1st Semester 2010 Groundwater Monitoring County of San Joaquin-July 21,2010 <br />