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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />FOOTHILL. SANITARY LANDFILL <br />Units: !M6 tmless noted <br />Sample Designation <br />Sampling Date <br />MW -3 <br />1/16/95 <br />MW -3 <br />4/20/95 <br />MW -3 <br />7/6/95 <br />MW -3 <br />10/11/95 <br />MW -3 <br />1/4/96 <br />MW -3 <br />4/2/96 <br />MW -3 <br />7/9/96 <br />MW -3 <br />10/2!96 <br />MW -3 <br />1/16/97 <br />MW -3 <br />4/10/97 <br />MW -3 <br />7/10/97 <br />MW -3 <br />10/3/97 <br />MW -3 <br />3/11/98 <br />MW -3 <br />4/30/98 <br />MW -3 <br />7/7198 <br />MW -3 <br />10/9/98 <br />MW -3 <br />1/15/99 <br />MW -3 <br />4/1/99 <br />MW -3 <br />7/7/99 <br />MW -3 <br />10/20/99 <br />Constituents of Concern Parameters <br />Chlorinated Herbicides <br />(EPA Method 8150A Modified) <br />All Compounds <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />ND <br />Metals <br />Aluminum, Dissolved <br />Antimony, Dissolved <br />Arsenic, Dissolved <br />Barium, Dissolved <br />Beryllium, Dissolved <br />NR <br />NR <br />NR <br />0.027 <br /><0.001 <br />NR <br />NR <br />NR <br />0.036 <br /><0.001 <br />0.061 <br /><0.02 <br /><0.001 <br />0.066 <br />NR <br /><D.05 <br /><0.05 <br /><0.002 <br />0.06 <br /><0.002 <br /><0.05 <br /><0.05 <br /><0.002 <br />NR <br /><0.002 <br /><0.05 <br /><0.05 <br /><0.002 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.028 <br /><0.0138 <br /><0,0192 <br />0.0757* <br /><0.0012 <br />Boron, Dissolved <br />Cadmium, Dissolved <br />NR <br /><0.002 <br />NR <br />NR <br />trace <br /><0.003 <br /><0.05 <br /><0.003 <br /><0.05 <br /><0.003 <br /><0.05 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.022 <br /><0.0036 <br />Chromium, Total Dissolved <br />Chromium Hexavalent <br />NR <br />NR <br />NR <br />NR <br /><0.004 <br />NR <br /><0.005 <br /><0.0023 <br />m.005 <br /><0.0023 <br /><0.005 <br /><0.0023 <br />NR <br /><0.0023 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.0056 <br /><0.000 <br />Cobalt, Dissolved <br /><0.004 <br /><0.005 <br /><0.005 <br /><0.01 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.0028 <br />Copper, Dissolved <br /><0.004 <br />NR <br />trace <br /><0.01 <br /><0.01 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.0042 <br />Iron, Dissolved <br />NR <br />NR <br />trace <br /><0.02 <br />0.05 <br />0.08 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.0064 <br />Lead, Dissolved <br />NR <br />NR <br /><0.001 <br />trace <br /><0.001 <br /><0.001 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.0198 <br />Manganese, Dissolved <br />NR <br />NR <br />0.083 <br /><0.005 <br /><0.005 <br /><0.005 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />0.00253* <br />Mercury, Dissolved <br />NR <br />NR <br /><0.0001 <br /><0.0005 <br /><0.0005 <br /><0.0005 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.0002 <br />Nickel, Dissolved <br />NR <br />NR <br /><0.019 <br /><0.02 <br /><0.02 <br /><0.005 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.0106 <br />Selenium, Dissolved <br />NR <br />NR <br /><0.002 <br /><0.003 <br /><0.003 <br /><0.003 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.036 <br />Silver, Dissolved <br />NR <br />NR <br />W.002 <br /><0.005 <br /><0.005 <br /><0.005 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0,0026 <br />Thallium, Dissolved <br /><0.001 <br />NR <br /><0.001 <br /><0.003 <br /><0.003 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.024 <br />Tin, Dissolved <br /><0.010 <br /><0.012 <br /><0.012 <br /><0.1 <br />NR <br /><0.1 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.0426 <br />Vanadium, Dissolved <br />0.015 <br />0.017 <br />0.018 <br />0.02 <br />NR <br />0.01 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />0.0168* <br />Zinc, Dissolved <br />NR <br />NR <br />trace <br /><0.01 <br /><0,01 <br /><0.01 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.0026 <br />Total Alkalinity <br />NR <br />NR <br />100 <br />100 <br />100 <br />98 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />118 <br />Alkalinity, Bicarbonate <br />NR <br />NR <br />100 <br />100 <br />100 <br />98 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />118 <br />Alkalinity, Carbonate <br />NR <br />NR <br /><4 <br /><4 <br /><4 <br /><0.4 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.808 <br />Cyanide <br /><0.003 <br /><0.003 <br /><0.003 <br /><0.02 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.002 <br />Sulfide <br />NR <br />NR <br /><2 <br /><0.6 <br /><0.6 <br /><0.6 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br /><0.5 <br />Total Organic Carbon <br />NR <br />NR <br />trace <br />trace <br /><0.5 <br /><0.5 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />1.01* <br />* = Trace Concentration <br />[I I This analytical result appears to be anomalous and therefore was not used in statistical 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:\con to cts\xlsuw91289UW7gl ® M M M M M M ® M <br />