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<br />TABLE 1 <br />WATER LEVEL MEASUREMENTS <br />COSTILLA LANDFILL PIT <br />COSTILLA COUNTY, COLORADO <br /> <br />Depth to Corrected <br />WeII Date Casing Elevation' Waterb Elevation <br />MWl 03/04/98 109.58 43.05 66.53 <br />MW2 03/04/98 97.83 NA NA <br />MW3 03/04/98 97.77 48.62 49.15 <br />MW4 03/04/98 101.72 35.77 65.95 <br />MWS 03/04/98 96.93 48.75 48.18 <br />'Based on arbitrary benchmark established onsite <br />"Measured from top of well casing <br />NA =Not Accessible <br />TABLE 2 <br />HUMAN HEALTH STANDARDS <br />COSTILLA COUNTY LANDFILL PIT <br />COSTILLA COUNTY. COLORADO <br />Contaminants ~ MWS ~ Regulatory Limit <br />Biological <br />To[al <br />Inorganic <br />Barium 0.079 mg/L <br />Fluoride 0.30 mg/L <br />Lead <0.003 mg/L <br />1 CFU/1000 ml <br />2 mg/L <br />4 mg/L <br />0.05 mg/L <br />10 mg/L <br />ND =Not Detected <br />