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TABLE 3 <br />SECONDARY DRINKING WATER <br />COSTILLA COUNTY LANDFILL PIT <br />COSTILLA COUNTY, COLORADO <br />Contaminants MW5 Re ulator Limit <br />Chloride 1.7 L . 250 mg/L <br />Iron <0.03 0.3 mg/L <br />Manganese <0.001 0.05 mgfL <br />pH 7,22 6.5-8.5 <br />Zinc 0.016 5 mg/L <br />TABLE 4 <br />TDS WATER QUALITY STANDARD <br />COSTILLA COUNTY LANDFILL PIT <br />COSTILLA COUNTY, COLORADO <br />Total dissolved solids 180 mg/L 400 mg/L <br />TABLE 5 <br />GROUNDWATER ORGANIC CHEMICAL STANDARDS <br />COSTILLA COUNTY LANDFILL PIT <br />COSTILLA COUNTY, COLORADO <br />Benzene ND 5 Ng/L <br />Toluene ND 1000 ug/L <br />Ethylbenzene ND 680 ~g/L <br />Xylene ND 10,000 ug/L <br />ND -Not Detected <br />102698.IV/November 30, 1998 <br />