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TABLE <br /> HARNEY LANE SANITARY LANDFILL <br /> FIRST QUARTER 2012 GROUNDWATER MONITORING <br /> Units m /L unless noted <br /> Sampling MW-1 MW-2 MW-3 MW-4 <br /> Designation <br /> Sampling Date Conc. Conc. Trend Conc. Conc. <br /> 1/19/12 Limit 1/19/12 Limit 1/19/12 Limit 1/19/12 Limit <br /> Monitoring and Field Parameters <br /> Elevation feet], <br /> TOC Elevation 100.89 NA 93.09 NA NR 88.46 NA 89.29 NA <br /> tDepth to 137.38 NA 132.58 NA NR 129.71 NA 129.86 NA <br /> Groundwater <br /> Groundwater -36.49 NA -39.49 NA NR -41.25 NA -40.57 NA <br /> Elevation <br /> General Water Quality Parameters <br /> Temperature °C 16.2 NA 16.0 NA NR 15.5 NA 19.1 NA <br /> Electrical <br /> Conductivity 299.6 410 316.9 360 none 254.3 670 694.3 1100[2] <br /> uS/cm field <br /> H units field 7.39 6.3-8.2 7.16 6.1-8.0 none 6.81 6.8-8.3 7.44 6.1-8.2 <br /> Turbidity 13.7 290 18.1 31 [2] incr 18.9 17[2] 17.7 17[2] <br /> NTU field <br /> Oxygen Reduction 157 [3] 133 [3] none 21 [3] 161 [3] <br /> Potential my <br /> Dissolved Oxygen 1.76 [3] 1.64 [3] none 1.58 [3] 1.67 [3] <br /> m /I <br /> Constituents of Concern <br /> Calcium 20 [31 24 3 none 17 [31 52 3 <br /> Magnesium 11 [31 13 3 none 9.2 3 28 3 <br /> Sodium 27 3 25 [31 none 22 [31 41 3 <br /> Potassium 2.2 [31 2.9 3 none 3.2 3 4.4 3 <br /> Bicarbonate 150 340[21 160 170 none 130 410[21 180 720 2 <br /> Alkalinity as 120 [3] 130 [3] none 110 [3] 150 [3] <br /> CaCO3 <br /> Chloride 8.4 20 18 30 decr 13 20 120 150 <br /> Nitrate as N 2.2 24 1.4 14 none 0.060* 8.2 2.0 38 <br /> Sulfate 7.8 18 3.7 6 none 3.4 12 13 21 <br /> Hardness as 95 [3] 110 [3] none 79 [3] 240 [3] <br /> CaCO3 <br /> Total Dissolved 240 480 260 425[2] incr 220 610 520 680 <br /> Solids(mg/1) <br /> Chemical Oxygen ND [3] 32 [3] none 140 [3] 110 [3] <br /> Demand <br /> Volatile Organic Compounds(ug/L) <br /> Benzene ND detect ND detect none 0.11* detect ND detect <br /> Toluene ND detect ND detect none {0.29*1 detect ND detect <br /> All Other ND detect ND detect none ND detect ND detect <br /> Compounds <br /> Harney Lane Sanitary Landfill Department of Public Works/Solid Waste <br /> 1st Semester 2012 Groundwater Monitoring Report County of San Joaquin-July 31,2012 <br />