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HISTORICAL SUMMARY OF ANALYTICA <br />GROUNDWATER <br />FOOTHILL SANITARY LANDFILL <br />MW -1A <br />Units: mg/l, unless noted <br />Sample Designation MW -1 MW -1 1AW-1 MW -1 MW -1 MW -1 MW -1 MW -1 MW -1 MW -1 MW -1 MW -1 MW -1 MW -1 MW -1 MW -1 MW-lA MW-lA <br />Sampling Date 2/2/05 7/27/05 3/28/06 7/27/06 1/31/07 7/23/07 2/5/08 7/31/08 2/4/10 5/26/10 9/2/10 1/25/11 8/9/11 1/12/12 7/24/12 2/4/13 8/21/13 1/20/14 <br />Constituents of Concern Parameters <br />Alkalinity as CaCO3 <br />81 <br />77 <br />94 <br />96 <br />93 <br />NA <br />NA <br />94 <br />92 <br />NA <br />100 <br />110 <br />NS <br />93 <br />NS <br />NS <br />110 <br />100 <br />Carbonate Alkalinity as CaCO3 <br /><2.2 <br /><2.2 <br /><2 <br />8* <br />NA <br />ND <br />ND <br /><2.0 <br /><2.5 <br />NA <br /><2.5 <br /><2.5 <br />NS <br /><2.5 <br />NS <br />NS <br /><2.5 <br /><2.5 <br />Bicarbonate Alkalinity as HCO3 <br />81 <br />77 <br />94 <br />88 <br />110 <br />48 <br />130 <br />110 <br />110 <br />NA <br />120 <br />130 <br />NS <br />110 <br />NS <br />NS <br />130 <br />130 <br />Hydroxide Alkalinity as CaCO3 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br /><2.0 <br />NA <br />NA <br />NA <br />NA <br />NS <br />NA <br />NS <br />NS <br />NA <br />NA <br />Cyanide <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NS <br />NA <br />NS <br />NS <br />NA <br />NA <br />Sulfide <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NS <br />NA <br />NS <br />NS <br />NA <br />NA <br />Total Organic Carbon <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NS <br />NA <br />NS <br />NS <br />NA <br />NA <br />Calcium <br />15.9 <br />21.4 <br />24.3 <br />22.8 <br />18 <br />19 <br />18 <br />19 <br />18 <br />NA <br />22 <br />22 <br />NS <br />19 <br />NS <br />NS <br />17 <br />22 <br />Potassium <br />2.6 <br />10.4 <br />12.4 <br />11.2 <br />9.6 <br />3.1 <br />2.8 <br />3.0 <br />3 <br />NA <br />3.5 <br />4.0 <br />NS <br />3.4 <br />NS <br />NS <br />3.4 <br />3.4 <br />Magnesium <br />7.8 <br />3.8 <br />3.9 <br />3.5 <br />3.1 <br />9.9 <br />9.9 <br />11.0 <br />12 <br />NA <br />I1 <br />11 <br />NS <br />10 <br />NS <br />NS <br />8.7 <br />11 <br />Sodium <br />8.5 <br />12.6 <br />14.2 <br />12.9 <br />13.0 <br />11.0 <br />10.0 <br />11.0 <br />13 <br />NA <br />15 <br />15 <br />NS <br />12 <br />NS <br />NS <br />30 <br />18 <br />Metals <br />Aluminum, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Antimony, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Arsenic, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Barium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Beryllium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Boron, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Cadmium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <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 />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Chromium Hexavalent <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Cobalt, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Copper, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Iron, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Lead, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Manganese, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Mercury, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Nickel, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Selenium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Silver, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Thallium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Tin, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Vanadium, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Zinc, Dissolved <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />* = Trace Concentration <br />[t] This analytical result appears to be anomalous <br />{I ] Parameter also detected in one or more qualii <br />NA = Not Available <br />NM =Not Measured <br />n:\consulting\data\shared\projects\xls\qmr\79\791289\FH-Hist. xls <br />