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TABLE 3 <br />SECONDARY DRINKING WATER <br />COSTILLA COUNTY LANDFILL PIT <br />COSTILLA COUNTY, COLORADO <br />Contaminants MW5 Regulatory Limit <br />Chloride 2.7 mg/L 250 mg/L <br />Iron <0.03 mg/L 0.3 mg/L <br />Manganese <0.001 mg/L 0.05 mg/L <br />pH 7.05 mg/L 6.5-8.5 <br />Zinc 0.008 tng/L 5 mg/L <br />TABLE 4 <br />TDS WATER QUALITY STANDARD <br />COSTILLA COUNTY LANDFILL PIT <br />COSTILLA COUNTY, COLORADO <br />Total dissolved solids ~ 200 mg/L I 400 mg/L <br />TABLE 5 <br />GROUNDWATER ORGANIC CHEMICAL STANDARDS <br />COSTILLA COUNTY LANDFILL PIT <br />COSTILLA COUNTY, COLORADO <br />Benzene ND 5µg/L <br />Toluene ND 1000 µg/L <br />Ethylbenzene ND 680 µg/L <br />Xylene ND 10,000 µg/L <br />ND -Not Detected <br />