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Table 2 <br /> Third Quarter 2012 Groundwater Monitoring Results - Deep Aquifer <br /> Corral Hollow Sanitary Landfill <br /> (Units mg/l unless noted) <br /> Monitoring Point MW-6 MW-7 <br /> Monitoring Date Date Cone. Date Cone. <br /> 7/16/12 Limit 7/16/12 Limit <br /> Monitoring and Field Parameters <br /> Elevations(feet) <br /> TOC Elevation ; 303.33 NR 256.48 NR <br /> Depth to Groundwater 358.60 I NR 303.31 NR <br /> Groundwater Elevation -55.27 1 NR -46.83 NR <br /> General Water Qualfty Parameters <br /> Tem erature °C field 23.8 NR 22.6 NR <br /> pH(units) field 7.83 3.4-8.4 7.58 4.9-8.3 <br /> Electrical Conductivi �(uS/cm field 1326 1,800 1814 1,600 <br /> Turbidity TU field 21.6 1 85 1 26.3 68 <br /> Constituents of Concern <br /> Bicarbonate Alkalinity as HCO3 F77T6-0430 290 ; 350 <br /> AdIlk Carbonate Alkalinity as CaCO3 ND 5 ND 5 <br /> Total Alkalinity as CaCO3 130 ` 250 230 280 <br /> Chloride 94 120 150 190 <br /> Nitrate as Nitrogen 2.0 3.0 5.2 6.1 <br /> Sulfate 270 340 360 i 440 <br /> Total Dissolved Solids 710 800 1,000 1100 <br /> Volatile Organic Com ounds *8260B u <br /> All Compounds ND i detect ND detect <br /> NR=Not Required ND=Not Detected <br /> NE=Not established,due to>50%non-detects NT=Not Tested <br /> MCL=Maximum Contaminant Levels NL=Not Listed <br /> NS=Not statistically significant deer=significantly decreasing trend <br /> I=Insufficient data for statistical analysis incr=significantly increasing trend <br /> Underlined values indicate a concentration limit exceedance. Bold values indicate a detected organic compound. <br /> [11 Not established due to statistically significant increasing trend. Concentration limit from WDRs. <br /> *Trace Concentration(estimated value) <br /> {}=Parameter also detected in one or more quality control blanks <br /> • <br /> Corral Hollow Sanitary Landfill 20 Department of Public Works/Solid Waste <br /> 3`d Quarter 2012 Groundwater Monitoring County of San Joaquin—October 30,2012 <br />