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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />FOOTHILL SANITARY LANDFILL <br />Units: mg/l, unless noted <br />Sample Designation LW -1 LW -1 LW -1 LW -1 LW -1 LW -1 LW -1 LW -I LW -1 <br />Sampling Date 11/28/94 5/30/03 9/14/03 1/22/04 7/21/04 2/2/05 7/27/05 3/28/06 7/27/06 <br />Constituents of Concern Parameters <br />Chlorinated Herbicides <br />(EPA Method 8150A Modified) <br />All Compounds ND NR NR NR ND NR NR NR NR <br />Aluminum, Dissolved <br />trace <br />NR <br />NR <br />NR 0.036* <br />NR <br />NR <br />NR <br />NR <br />Antimony, Dissolved <br /><0.02 <br />NR <br />NR <br />NR 0.000020* <br />NR <br />NR <br />NR <br />NR <br />Arsenic, Dissolved <br />trace <br />NR <br />NR <br />NR 0.0011 <br />NR <br />NR <br />NR <br />NR <br />Barium, Dissolved <br />0.11 <br />NR <br />NR <br />NR 0.11 <br />NR <br />NR <br />NR <br />NR <br />Beryllium, Dissolved <br /><0.0005 <br />NR <br />NR <br />NR 0.0021* <br />NR <br />NR <br />NR <br />NR <br />Boron, Dissolved <br />NR <br />NR <br />NR <br />NR NR <br />NR <br />NR <br />NR <br />NR <br />Cadmium, Dissolved <br /><0.002 <br />NR <br />NR <br />NR <0.000018 <br />NR <br />NR <br />NR <br />NR <br />Chromium, Total Dissolved <br />trace <br />NR <br />NR <br />NR 0.0046* <br />NR <br />NR <br />NR <br />NR <br />Chromium Hexavalent <br />0.027 <br />NR <br />NR <br />NR NR <br />NR <br />NR <br />NR <br />NR <br />I-00alt, Uissolved<0.003 <br />100 <br />100 <br />110 <br />NR 0.0030* <br />NR <br />NR <br />NR <br />NR <br />Copper, Dissolved <br />trace <br />NR <br />NR <br />NR 0.0026* <br />NR <br />NR <br />NR <br />NR <br />Iron, Dissolved <br />0.027 <br />NR <br />NR <br />NR 0.0056* <br />NR <br />NR <br />NR <br />NR <br />Lead, Dissolved <br /><0.001 <br />NR <br />NR <br />NR 0.000071 * <br />NR <br />NR <br />NR <br />NR <br />Manganese, Dissolved <br />0.007 <br />NR <br />NR <br />NR 0.0017* <br />NR <br />NR <br />NR <br />NR <br />Mercury, Dissolved <br /><0.0001 <br />NR <br />NR <br />NR <0.000032 <br />NR <br />NR <br />NR <br />NR <br />Nickel, Dissolved <br /><0.007 <br />NR <br />NR <br />NR 0.00054* <br />NR <br />NR <br />NR <br />NR <br />Selenium, Dissolved <br /><0.001 <br />NR <br />NR <br />NR 0.00043* <br />NR <br />NR <br />NR <br />NR <br />Silver, Dissolved <br />trace <br />NR <br />NR <br />NR <0.01 <br />NR <br />NR <br />NR <br />NR <br />Thallium, Dissolved <br /><0.001 <br />NR <br />NR <br />NR <0.000016 <br />NR <br />NR <br />NR <br />NR <br />Tin, Dissolved <br /><0.01 <br />NR <br />NR <br />NR <0.033 <br />NR <br />NR <br />NR <br />NR <br />Vanadium, Dissolved <br />0.011 <br />NR <br />NR <br />NR 0.012* <br />NR <br />NR <br />NR <br />NR <br />Zinc, Dissolved <br />0.012 <br />NR <br />NR <br />NR 0.0059* <br />NR <br />NR <br />NR <br />NR <br />Ioralrvxamuty 104 <br />100 <br />100 <br />110 <br />100 <br />110 <br />110 <br />105 <br />104 <br />Alkalinity, Bicarbonate 104 <br />100 <br />100 <br />110 <br />100 <br />110 <br />110 <br />105 <br />104 <br />Alkalinity, Carbonate <2 <br /><5.0 <br /><5.0 <br /><5.0 <br /><5.0 <br /><2.2 <br />6.0 <br /><2 <br /><3 <br />Cyanide <0.003 <br />NR <br />NR <br />NR <br /><0.017 <br />NR <br />NR <br />NR <br />NR <br />Sulfide <2 <br />NR <br />NR <br />NR <br />0.044* <br />NR <br />NR <br />NR <br />NR <br />Total Organic Carbon <0.2 <br />NR <br />NR <br />NR <br />1.8 <br />NR <br />NR <br />NR <br />NR <br />' = Trace Concentration <br />[ I ] This analytical result appears to be anomalous and therefore was not used in statistical <br />evaluation procedures. <br />{ 1 } Parameter also detected in one or more quality control blanks <br />ND = Not Detected <br />NM = Not Measured <br />NR = Not Required <br />n:\co 1sh cts\xIAW912.84Mo7gI M M M M M M r M M ® M <br />