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TABLE 3 <br /> NORTH COUNTY RECYCLING CENTER AND SANITARY LANDFILL <br /> FIRST QUARTER 2004 GROUNDWATER MONITORING RESULTS <br /> (Units mg/I unless noted) <br /> Sampling Designation G-1 G-313 G-4 G-5 G-6 Conc. <br /> Sampling Date 1/20/04 1/20/04 1/20/04 1/20/04 1/20/04 Limits <br /> Monitoring and Field Parameters <br /> Elevations(feet) <br /> Top of Casing 118.92 111.62 114.93 109.19 112.12 NR <br /> Depth to Groundwater 153.56 150.57 147.14 144.30 147.64 NR <br /> Groundwater Elevation -34.64 -38.95 -32.21 -35.11 -35.52 NR <br /> General Water Quality Parameters <br /> Temperature (°C) 15.0 16 16.9 15.7 17.7 NR <br /> Chloride 28 4.8 19 22 49 23 <br /> Nitrate as Nitrogen 3.0 0.8 1.6 1.5 1.5 2.2 <br /> Total Dissolved Solids 230 110 170 190 250 260 <br /> Sulfate 6.7 3 4.3 4.1 9.2 8.6 <br /> PH (units) 7.89 8.04 8.03 8.04 7.74 6.2-8.1 <br /> Electrical Conductivity(uS/cm) 349 207 208 228 397 352 <br /> Turbidity(NTU) 4.28 6.74 11.7 17.6 67.9 13 <br /> Calcium 19 14 13 15 23 NE(3) <br /> Potassium 3.4 1.8 2.3 3 4.1 NE(3) <br /> Magnesium 11 7.6 7.3 8.2 13 NE(3) <br /> Sodium 17 14 13 14 30 NE(3) <br /> Bicarbonate 100 54 83 98 120 110 <br /> Carbonate ND ND ND ND ND 5.0 <br /> Volatile Organic Compounds (ug/L) <br /> All 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 /> {X) False positive: parameter also detected in one or more quality control blanks <br /> North County RCSL Public Works/Solid Waste <br /> 1ST Semester 2004 Groundwater Monitoring County of San Joaquin-July 30,2004 <br />