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® Table 4 <br /> First Semester 2013 Leachate Area 1 <br /> Foothill Sanitary Landfill <br /> (Units mg/I unless noted) <br /> Sampling Designation L-1 Module 1 <br /> Sampling Date 2/4/2013 <br /> Monitoring and Field Parameters <br /> General Water Quali Parameters <br /> Temperature -C field 21.8 <br /> H units field 6.64 <br /> Electrical Conductivity uS/cm field 2236 <br /> Turbidity NTU field 31.4 <br /> Constituents of Concern <br /> Calcium 210 <br /> Magnesium 97 <br /> Sodium 130 <br /> Potassium 7.2 <br /> Bicarbonate Alkalinity as HCO3 830 <br /> Carbonate Alkalinity as CaCO3 ND <br /> ® Total Alkalinity as CaCO3 680 <br /> Chloride 360 <br /> Nitrate—Nitrogen ND <br /> Sulfate 16 <br /> Total Dissolved Solids 1400 <br /> Volatile Organic Compounds u /L <br /> 1,2-Dichloro ro ane 0.95 <br /> Eth (benzene 9.3 <br /> Methyl t-but I ether 21 <br /> Na thalene 6.5 <br /> Tetrachloroethene 0.43* <br /> Toluene 9.8 <br /> Trichloroethene 0.63 <br /> Vinyl chloride 3.4 <br /> Total xylenes 14 <br /> Benzene 11 <br /> Chlorobenzene 0.30* <br /> 1,2-Dichlorobenzene 0.18* <br /> 1,3-Dichlorobenzene 5.4 <br /> 1,4-Dichlorobenzene 5.9 <br /> 1,1-Dichloroethane 0.72 <br /> 1,2-Dichloroethane 3.4 <br /> Cis-1,2-Dich loroethene 16 <br /> Methyl ethyl ketone 39 <br /> t-Butyl Alcohol 520 <br /> ® ND = Not Detected <br /> *=Trace concentration (estimated value) <br /> Bolded values indicate VOC detections <br /> Foothill Sanitary Landfill 15 Department of Public Works/Solid Waste <br /> 1"Semester 2013 Groundwater Monitoring County of San Joaquin—July 25,2013 <br />