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TABLE 3 <br /> NORTH COUNTY RECYCLING CENTER AND SANITARY LANDFILL <br /> FIRST QUARTER 2006 GROUNDWATER MONITORING RESULTS <br /> (Units mg/I unless noted) <br /> Sampling Designation G-1 G-3D G-4 G-5 G-6 Conc. <br /> Sampling Date 1/26/06 1/26/06 1/26/06 1/26/06 1/26/06 Limits <br /> Monitoring and Field <br /> Parameters <br /> Elevations (feet)_ <br /> Top of Casing 118.92 111.62 114.93 109.19 112.12 NR _ <br /> Depth to Groundwater 155.46 149.14 152.64 146.37 149.58 NR <br /> Groundwater Elevation -36.54 -37.52 -37.71 -37.18 -37.46 NR <br /> General Water Qualitv <br /> Parameters <br /> Temperature °C 14.8 15.4 17 16 17.2 NR <br /> Chloride 27 7 8 8 10 41 <br /> Nitrate as Nitro en 3 1.4 1.1 2.3� 1.2 4.3 <br /> Total Dissolved Solids 260 170 170 190 210 310 <br /> Sulfate 8 _4 4 4 _ 4 -� 11 <br /> H units 6.94 6.73 6.76 6.83 _6.82 6.0-8.4 <br /> Electrical Conductivity 352 243 208 T 224 - 261 450 <br /> (us/cm) <br /> Turbidity__(NTU13.1 10.6 7.9 12.6 6.4 20 <br /> _Calcium 24 13.9 1_4.3 15.9 _19.4 33_ <br /> Potassium _ 4.16 3.48 3.01 2.98 <br /> Magnesium _ 13.7 8.01 7.5 8.37 9.18 29 <br /> Sodium _ 19.2 15.1 14. 15 17.3 28 <br /> Bicarbonate 120 91 87 93 120 150 <br /> _ Carbonate _ ND TND ND ND ND NE 1 <br /> Volatile Organic Compounds <br /> u /L <br /> Acetone ND ND ND _ND3 1* detect <br /> - Ethanol ND ND ND 40* 45* detect <br /> All Other Compounds ND ND ND ND ND detect <br /> G-1 = Upgradient Well <br /> NR = Not Required <br /> ND = Not Detected <br /> NE = Not Established <br /> (1) Not established due to > 50% non-detects <br /> (2) Not established due to statistically significant trend <br /> (3) Not established due to insufficient data <br /> * Trace Concentration (estimated value) <br /> { } = Compound was also found in laboratory control blanks <br /> North County RCSL Public Works/Solid Waste <br /> 1 st Semester 2006 Groundwater Monitoring County of San Joaquin-July 31,2006 <br />