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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />CORRAL HOLLOW SANITARY LANDFILL <br />MW -10A <br />Units: me, unless noted <br />Sample Designation MW -10A MW -10A MW -10A MW -10A MW -10A MW -10A MW -10A MW -10A MW -10A MW -10A <br />Sampling Date 5/21/12 7/16/12 10/15/12 1/28/13 4/15/13 7/18/13 10/17/13 1/13/14 2/19/14 5/2/14 <br />Constituents of Concern Parameters <br />Alkalinity as CaCO3 <br />90 <br />93 <br />NR <br />92 <br />NR <br />NR <br />NR <br />92 <br />NR <br />NR <br />Carbonate Alkalinity as CaCO3 <br /><2.5 <br /><2.5 <br />NR <br /><2.5 <br />NR <br />NR <br />NR <br /><2.5 <br />NR <br />NR <br />Bicarbonate Alkalinity as HCO3 <br />110 <br />110 <br />NR <br />110 <br />NR <br />NR <br />NR <br />110 <br />NR <br />NR <br />Hydroxide Alkalinity as CaCO3 <br />N/A <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Cyanide <br /><0.0016 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Sulfide <br /><0.050 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />_NR <br />NR <br />NR <br />NR <br />Total Organic Carbon <br />13 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Nitrat <br />0.0038 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR___ <br />NR <br />NR <br />NR__ <br />---------- - --- <br />Sulfate <br />- <br />26 <br />24 <br />-- <br />22 <br />-- - - <br />24 <br />- <br />24 <br />21 <br />-- <br />20 <br />22 <br />NR <br />— <br />20 <br />Calcium <br />54 <br />NR <br />NR <br />51 <br />NR <br />NR <br />NR <br />52 <br />NR <br />NR <br />Potassium <br />5.3 <br />NR <br />NR <br />3.7 <br />NR <br />NR <br />NR <br />2.9 <br />NR <br />NR <br />_ <br />Magnesium <br />18 <br />NR <br />NR <br />15 <br />NR <br />_NR <br />NR <br />_ <br />NR_ <br />14 <br />NR <br />NR <br />Sodium <br />M <br />NR <br />NR <br />66 <br />NR <br />NR <br />NR <br />68 <br />NR <br />NR <br />Metals <br />NR <br />NR <br />NR <br />NR <br />NR <br />Zinc, Dissolved <0.0059 <br />NR <br />NR <br />NR <br />NR <br />Aluminum, Dissolved <br /><0.026 <br />NR <br />NR <br />NR <br />NK <br />NR <br />NR <br />NR <br />NR <br />NR <br />Antimony, Dissolved <br /><0.010 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Arsenic, Dissolved <br />0.0038 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR___ <br />NR <br />NR <br />NR__ <br />Barium, Dissolved <br />0.032 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Beryllium, Dissolved <br /><0.001 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Boron, Dissolved <br />N/A <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Cadmium, Dissolved <br /><0.001 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />N_R______ <br />NR <br />Chromium, Total Dissolved <br />0_.0076 <br />NR_ <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Chromium Hexavalent <br />0.0075 <br />_ <br />NR <br />NR <br />NR <br />NR <br />_ <br />NR <br />NR <br />NR <br />NR <br />_ <br />NR <br />Cobalt, Dissolved <br /><0.005 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Copper, Dissolved <br /><0.0023 <br />NR <br />NR <br />NK <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Iron, Dissolved <br /><0.005 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Lead, Dissolved <br /><0.0001 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Manganese, Dissolved <br />0.69 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Dissolved <br /><0.00003 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />_Mercury_, <br />Nickel, Dissolved <br />0.00088 <br />NR <br />NR <br />NR <br />_ <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Selenium, Dissolved 0.003 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Silver, Dissolved <0.0011 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />__NR <br />NR <br />Thallium, Dissolved <0.015 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />_ <br />NR <br />NR <br />Tin, Dissolved <0.005 <br />NR <br />NR_ <br />NR <br />_ <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Vanadium, Dissolved 0.0038 <br />NR <br />NR <br />NR <br />_ <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Zinc, Dissolved <0.0059 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Semivolatile Organic Compounds (EPA Method 3520/8270) <br />Bis (2-ethylhexyl) Phthalate <br />All Compounds ND <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Organophosphate Pesticides <br />(GPA Method 8141 A) <br />All Compounds ND <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />* = Trace Concentration <br />(1) This analytical result appears to be anomalous and therefore was not used in <br />statistical evaluation <br />procedures. <br />( 1) Parameter also detected in one or more quality control blanks <br />ND = Not Detected <br />NM = Not Measured <br />NA - Not Required <br />.......... .......... <br />