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i i l i i i i i i i i i i A i i i i i <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />LEACHATE <br />FOOTHILL SANITARY LANDFILL <br />Units: mg/1, unless noted <br />Sample Designation L-1 L-1 <br />Sampling Date 3/7/05 3/28/06 <br />Monitoring and Field Parameters <br />eral Water (hWity Parameters <br />Temperature (°C) <br />NT <br />16.4 <br />Chloride <br />168 <br />251 <br />Nitrate Nitrogen <br /><0.4 <br />0.06* <br />Total Dissolved Solids <br />3,650 <br />2,280 <br />Sulfate <br />11 <br /><0.2 <br />pH (std. units) <br />6.12 <br />6.81 <br />Electrical Conductivity (umhos/cm) <br />3,470 <br />280 <br />Turbidity (NTU) field <br />NT <br />NT <br />Calcium, Dissolved <br />455 <br />398 <br />Magnesium, Dissolved <br />201 <br />302 <br />Potassium, Dissolved <br />13 <br />10 <br />Sodium, Dissolved <br />146 <br />193 <br />Volatile Organic Compounds (ug/D <br />1,1,1 -trichloroethane <br />16 <br /><0.14 <br />1,1-Dichloroethane <br />9 <br />2.7 <br />I,1-Dichloroethene <br /><0.19 <br />0.58 <br />1,2,4-Trimethylbenzene <br /><0.13 <br />0.43" <br />1,2-Dichloroethene <br /><0.18 <br />2.4 <br />1,2-Dichloropropane <br /><0.17 <br />0.66 <br />1,3,5-Trimethylbenzene <br /><0.15 <br />0.19" <br />2-butanone <br />4100 <br />480 <br />4-Isopropyltoluene <br /><O.1 <br />2.4 <br />4-methyl-2pentenone <br />30 <br />20 <br />Acetone <br />1400 <br />300 <br />Chloroethane <br /><0.2 <br />23 <br />Chloromethane <br /><0.23 <br />2.1 <br />Chloroform <br />3 <br /><0.14 <br />cis-1,2-Dichloroethane <br /><0.17 <br />8.1 <br />Ethly tert-butyl ether (ETBE) <br />3 <br />NT <br />Ethylbenzene <br />2 <br />4.7 <br />Isopropyltoluene <br />0.51" <br />Methly tert-butyl ether <br />10 <br />490 <br />Methylene Chloride <br />150 <br />7.5 <br />n-Propylbenzene <br /><0.13 <br />0.16" <br />Tetrachloroethene (PCE) <br />4 <br />0.34" <br />Toluene <br />38 <br />71 <br />Total Xylenes <br />12 <br />13 <br />Trichloroethene <br />6 <br />1.3 <br />Vinyl Chloride <br />NR = Not Required <br />NT = Not Tested <br />ND = Not Detected <br />= Trace Concentration <br /><0.5 <br />99 <br />n:\consulting\data\shared\projects\xls\qmr\79\791289\FHOI 1207gl <br />