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TABLE 4 <br /> Foothill Sanitary Landfill <br /> First Semester 2007 Leachate Module 1 <br /> (Units mg/I unless noted) <br /> Sampling Designation L-1 <br /> Sampling Date 1/31/2007 <br /> Monitoring and Field Parameters <br /> General Water Quality Parameters <br /> Temperature °C 11 <br /> Chloride 300 <br /> Nitrate Nitrogen 0.3 <br /> Total Dissolved Solids 1900 <br /> Sulfate 0.3* <br /> H units 6.35 <br /> Electrical Conductivity umhos/cm 3070 <br /> Turbidity NTU field 13.7 <br /> Calcium 270 <br /> Magnesium 160 <br /> Potassium 9.1 <br /> Sodium 190 <br /> Bicarbonate 1900 <br /> Total Alkalinity 1600 <br /> Volatile Organic Com oundsu /L <br /> 1,1-Dichloroethane 10.0 <br /> 1,1-Dichloroethene 65 <br /> 1,2-Dichloroethene 7.9 <br /> Acetone 22* <br /> Chloroethane 15 <br /> Cis-1,2-Dichloroethane 4.2 <br /> Tert-But I Alcohol 91* <br /> ' Toluene 1.9* <br /> Tricholoroethene 1.9* <br /> Vinyl Chloride 220 <br /> Methyl tert-but l ether 100 <br /> Methylene Chloride 8.6* <br /> ND = Not Detected <br /> * = Trace concentrations estimated value <br /> = <br /> Compound was also found in laboratory control blanks <br /> Foothill Sanitary Landfill 14 Department of Public Works/Solid Waste <br /> 1"Semester Groundwater Monitoring County of San Joaquin—July 31,2007 <br />