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® TABLE6 <br /> LEACHATE MONITORING SUMMARY <br /> FIRST SEMESTER 2013 <br /> NORTH COUNTY RECYCLING CENTER AND SANITARY LANDFILL <br /> (Units mg/I unless noted) <br /> L-1 L-3 L-4 <br /> (Area 1 (Area 3 (Area 4 <br /> Sampling Designation Sum Sum Sum <br /> Sampling Date 1/23/13 1/23/13 1/23/13 <br /> Monitoring and Field Parameters <br /> Temperature °C 23.6 32.20 23.8 <br /> Electrical Conductivity (uS/cm) 3948 1913 2411 <br /> H units 6.51 5.62 6.39 <br /> Turbidity 37.8 41.9 40.1 <br /> Redox Potential -62 +44 -49 <br /> Dissolved Oxygen 1.73 1.81 1.46 <br /> Total Alkalinity as CaCO3 640 490 740 <br /> Bicarbonate Alkalinity 780 590 900 <br /> Chloride {920} {400) {420} <br /> Sulfate 2.1 1.9 ND <br /> Hardness as CaCO3 1,500 730 1,000 <br /> ® Total Dissolved Solids 3,000 1500 1,800 <br /> Chemical Oxygen Demand 270 2100 220 <br /> Metals <br /> Calcium {330) {1 701 {230) <br /> Magnesium 160 73 110 <br /> Sodium 280 150 150 <br /> Potassium 3.2 6.3 2.7 <br /> Volatile Organic Compounds (ug/L) <br /> Benzene 3.6 3.4 12 <br /> Sec-Butyl benzene ND 0.32* ND <br /> Chlorobenzene 0.60 0.18* 0.30* <br /> Chloroethane 0.98 0.44* 1.4 <br /> 2-Chlorotoluene 1.0 0.25* ND <br /> 1,2-Dichlorobenzene 0.53 ND ND <br /> 1,4-Dichlorobenzene 7.1 2.7 4.0 <br /> Dichlorodifluoromethane 0.72 ND ND <br /> 1,1-Dichloroethane 0.77 0.41* 0.76 <br /> 1,2-Dichloroethane 0.56 5.4 4.3 <br /> Cis-1,2-Dichloroethene 2.2 2.1 1.4 <br /> 1,2-Dichloropropane ND 0.55 0.69 <br /> Ethylbenzene 6.0 4.0 3.1 <br /> Isopropylbenzene 0.43* 1.0 0.89 <br /> p-Isopropyltoluene 0.65 3.4 0.14* <br /> Methylene chloride 0.64* 0.89* 0.59* <br /> North County RC&SL Public Works/Solid Waste <br /> 1 s'Semester 2013 Groundwater Monitoring 17 County of San Joaquin-July 25,2013 <br />