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Table 1 <br />Human Health Standards <br />Costilla County Landfill Pit <br />Costilla County, Colorado <br /> Regulatory Limit <br />Contaminants MWI MW4 <br />Biological <br />Total Coliforms ND ND 0.006 mg/L <br />Inorganic <br />Antimony ND ND 0.05 mg/L <br />Arsenic ND ND 2.0 mg1L <br />Barium 0.045 0.038 0.004 mg/L <br />Beryllium ND ND 0.005 mg/L <br />Cadmium ND ND 0.1 mg/L <br />Chromium ND ND 0.20 mg/L <br />Cyanide (free) ND ND 4.0 mg/L <br />Fluoride 0.4 0.3 0.05 mg/L <br />Lead ND ND 0.002 mglL <br />Mercury ND ND 0.1 mg/L <br />Nickel ND ND 10.0 mg/L <br />Nitrate 0.9 0.8 1.0 mg/L <br />Nitrite ND ND 10.0 mg/L <br />Total Nitrate and 0.9 0.8 1.0 mg/L <br />Nitrite <br />Selenium ND ND 10.0 mg/L <br />Silver ND ND 0.05 mg/L <br />Thallium ND ND 0.002 mg/L <br />Radiological <br />Alpha Emitters ND 3.1 15 Pci/I <br />Beta and Photon 3.6 1.9 14 rnrem/year <br />Emitters <br />ND -Not Detected <br />10029615.LTR\484\I\10/7/96 <br />