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GROUNDWATER <br />FOOTHILL SANITARY LANDFILL <br />Units mg/l, unless noted <br />Sample Designation MW -2R MW -2R MW -2R MW -2R MW -2R <br />Sampling Date 1/25/11 8/9/11 1/12/12 7/24/12 2/4/13 <br />Constituents of Concern Parameters <br />Alkalinity as CaCO3 <br />82 <br />78 <br />79 <br />80 <br />80 <br />Carbonate Alkalinity as CaCO3 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br /><2.5 <br />Bicarbonate Alkalinity as HCO3 <br />100 <br />95 <br />96 <br />97 <br />97 <br />Hydroxide Alkalinity as CaCO3 <br />NA <br />NA <br />NA <br />NA <br />NA <br />Cyanide <br />NA <br />NA <br />NA <br />NA <br />NA <br />Sulfide <br />NA <br />NA <br />NA <br />NA <br />NA <br />Total Organic Carbon NA NA NA NA NA <br />Calcium 15 16 16 15 15 <br />Potassium 3.2 2.9 3.2 3.3 3.1 <br />Magnesium 8.2 8.6 8.3 8.1 7.9 <br />Sodium 12 12 12 12 13 <br />Aluminum, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Antimony, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Arsenic, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Barium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Beryllium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Boron, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Cadmium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Chromium, Total Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Chromium Hexavalent <br />NA <br />NA <br />NA <br />NA <br />NA <br />Cobalt, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Copper, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />_ <br />Iron, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Lead, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Manganese, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Mercury, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Nickel, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Selenium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Silver, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Thallium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Tin, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />Vanadium, Dissolved <br />NA' <br />NA <br />NA <br />NA <br />NA <br />Zinc, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />[ 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 />NA = Not Available <br />n:\consa\shared\projects\xls\qmr\79\791289\FH-Hist.xls <br />