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HISTORICAL SUMMARY OF ANALYTICAL:, RESULTS <br />GROUNDWATER <br />CORRAL HOLLOW SANITARY LANDFILL <br />MW -11A <br />Units: mg/1, unless noted <br />Sample Designation <br />Sampling Date <br />MW -11A <br />5/21/12 <br />MW -11A <br />7/16/12 <br />MW -11A <br />10/15/12 <br />MW -11A <br />1/28/13 <br />MW -11A <br />4/15/13 <br />MW -11A <br />7/18/13 <br />MW -11A <br />10/17/13 <br />MW -11A <br />1/13/14 <br />MW -11A <br />2/19/14 <br />MW -11A <br />5/2/14 <br />Constituents of Concern Parameters <br />Alkalinity as CaCO3 <br />530 <br />560_ <br />NR <br />520 <br />NR <br />NR <br />NR <br />470 <br />NR <br />NR <br />Carbonate Alkalinity as CaCO3 <br /><5.0 <br /><5.0 <br />NR <br /><5.0 <br />NR <br />NR <br />NR <br /><5.0 <br />NR <br />NR <br />Bicarbonate Alkalinity as HCO3 <br />640 <br />680 <br />NR <br />630 <br />NR <br />NR <br />NR <br />570 <br />NR <br />NR <br />Hydroxide Alkalinity as CaCO3 <br />N/A <br />NR <br />NR <br />NR <br />_ <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Cyanide <br /><0.0016 <br />NR__ <br />NR <br />_ <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 />Total Organic Carbon <br />3.5 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Nitrate -Nitrogen <br />2.5 <br />2.3 <br />2.4___2.4 <br />2.3 <br />2.4 <br />2.7 <br />NR <br />2.7 <br />________2.9 <br />Sulfate <br />68 <br />63 <br />63_ <br />66 <br />67 <br />62 <br />66 <br />71 <br />NR <br />74 <br />Calcium <br />130 <br />_ <br />NR <br />NR <br />110 <br />NR <br />NR <br />NR <br />110 <br />NR_ <br />NR <br />Potassium <br />7.5 <br />NR <br />NR <br />4.2 <br />NR <br />NR <br />_ <br />NR <br />3.9 <br />_ <br />NR <br />Magnesium <br />43 <br />NR <br />NR <br />34 <br />NR <br />_ <br />NR_ <br />33 <br />_NR <br />NR <br />NR <br />Sodium <br />160 <br />NR <br />NR <br />____NR <br />120 <br />NR <br />NR <br />NR <br />140 <br />NR <br />NR <br />Metals <br />Aluminum, Dissolved <br /><0.026 <br />- NR <br />NR <br />NR <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 />_ <br />NR <br />Arsenic, Dissolved <br />0.0022 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Barium, Dissolved <br />0_.027 <br />NR <br />NR_ <br />NR <br />_ <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 />_ <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 />_ <br />NR <br />NR <br />NR <br />NR <br />NR <br />Chromium, Total Dissolved <br /><0.001 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />ChroniumHexavale_n_t <br />0.00023 <br />NR <br />NR <br />NR_ <br />NR <br />NR <br />NR <br />NR <br />NR <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 />_ <br />NR <br />NR <br />NR <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 /><0.0002 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Manganese, Dissolved <br />0.017 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Mercury, Dissolved <br />0.000052_ <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Nickel, Dissolved <br />0.0022 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Selenium, Dissolved <br />0.001 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Silver, Dissolved <br /><0.0011 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Thallium, Dissolved <br /><0.015 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Tin, Dissolved <br /><0.005 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR - <br />NR_ <br />NR <br />Vanadium, Dissolved <br />- 0.0034 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Zinc, Dissolved <0,0059 <br />Semivolatile Organic Compounds (EPA Method 3520/8270) <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Bis (2-ethylhexyl) Phthalate <br />All Compounds <br />ND <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Organophosphate Pesticides <br />(EPA Method 8141 A) <br />All Compounds <br />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 statistical evaluation 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 />MM r r r r r r fur r mm MAI NO r r r �- r <br />