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C <br />Table 4 <br />Foothill Sanitary Landfill <br />First Semester 2005 Leachate Monitoring Results <br />(Units mg/I unless noted) <br />Sampling Designation <br />Sampling Date <br />L-1 <br />3/7/05 <br />Monitoring and Field Parameters <br />Temperature (°C) <br />NT <br />Electrical Conductivity (uS/cm) <br />3,470 <br />pH (units) <br />6.12 <br />Total Dissolved Solids <br />3,650 <br />Carbonate Alkalinity <br /><10 <br />Bicarbonate Alkalinity <br />1,700 <br />Chloride <br />168 <br />Sulfate <br />11 <br />Nitrate -Nitrite as Nitrogen <br /><0.4 <br />Calcium <br />455 <br />Magnesium <br />201 <br />Potassium <br />13 <br />Sodium <br />146 <br />Volatile Organic Compounds (ug/L) <br />Acetone <br />1400 <br />2-butanone <br />4100 <br />Chloroform <br />3 <br />1,1-Dichloroethane <br />9 <br />Ethylbenzene <br />2 <br />Ethyl tert-butyl ether <br />3 <br />Methylene Chloride <br />150 <br />2-methyl-2pentanone <br />30 <br />Methyl tert-butyl ether <br />10 <br />Tetrachloroethene (PCE) <br />4 <br />Toluene <br />38 <br />1,1,1 -Trichloroethane <br />16 <br />Trichloroethene <br />6 <br />Xylenes (total) <br />12 <br />ND = Not Detected <br />NM = Not Measured <br />* Trace Concentration (estimated value) <br />Table 4 (continued) <br />Foothill Sanitary Landfill <br />First Semester 2005 Leachate Monitoring Results <br />(Units mg/I unless noted) <br />N:\consulting\data\public\giacomini\TABLE4-1 STSEM05-LEACHATEASSheed <br />