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<br /> <br />TABLE 2 <br />HUMAN HEALTH STANDARDS <br />COSTILLA COUNTY LANDFILL PIT <br />COSTILLA COUNTY, COLORADO <br />Contaminants MWI MW4 MWS Regulatory Limit <br />Biological <br />Total Coliforms ND ND ND 0.006 m /L <br />Inorganic <br />Antimony ND ND ND 0.05 mglL <br />Arsenic ND ND ND 2.0 mg/L <br />Barium 0.038 0.041 0.050 0.004 mglL <br />Beryllium ND ND ND 0.005 mg/L <br />Cadmium ND ND ND 0.1 mg/L <br />Chromium ND ND ND 0.20 mg/L <br />Cyanide (free) ND ND 0.05 4.0 mg/L <br />Fluoride 0.30 0.30 0.20 0.05 mg/L <br />Lead ND ND ND 0.002 mg/L <br />Mercury ND ND ND 0.1 mg/L <br />Nickel ND ND ND 10.0 mg/L <br />Nitrate 1.0 0.8 0.20 10 mg/L <br />Nitrite ND ND ND 1.0 mg/L <br />Total Nitrate and 1.0 0.8 0.20 10 mg/L <br />Nitrite <br />Selenium ND ND ND 10.0 mg/L <br />Silver ND ND ND 0.05 mg/L <br />Thallium ND ND ND 0.002 m /L <br />Radiological <br />Alpha Emitters 2.6 2.7 4.0 15 Pci/I <br />Beta and Photon 2.5 ND ND 14 mrem/year <br />Emitters <br />ND =Not Detected <br />