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Table 1 <br />Human Health Standards <br />Costilla County Landfill Pit <br />Costilla Countv. Colorado <br /> Regulatory Limit <br />Captaminants MWl MW4 <br />Biological <br />Total Coliforms ND ND 0.006 m /L <br />Inorganic <br />Antimony ND ND 0.05 mg/L <br />Arsenic ND ND 2.0 mg/L <br />Barium 0.037 0.045 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 0.3 0.4 0.05 mg/L <br />Lead ND ND 0.002 mg/L <br />Mercury ND ND 0.1 mg/L <br />Nickel ND ND 10.0 mg/L <br />Nitrate 1.0 0.8 1.0 mg/L <br />Nitrite ND ND 10.0 mg/L <br />Total Nitrate and 1.0 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 m /L <br />Radiological <br />Alpha Emitters 0.900 4.80 15 Pci/I <br />Beta and Photon 6.70 1.9 14 mrem/year <br />Emitters <br />ND -Not Detected <br />IOW961S. LTR\a94\I \1 /8/97 <br />