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Orange County -Closed Landfill <br />Permit # 68-01 <br />Partial Monitoring History <br />Detercted Metals at Concentrations Exceeding Established N.C. Groundwater Standards <br />Date Well Number Chemical Concentration <br />OS-28-92 5 Lead 18.3 <br />06-30-93 6 Lead 54 <br /> 7 Lead 30 <br />03-13-95 5 Lead 40 <br /> 6 Lead 55 <br />11-15-95 5 .Lead 54J <br /> 6 Cadmium 7B <br /> Lead 36J <br />07-25-96 6 Lead 18J <br />02-25-97 5 Lead 16B <br /> 6 Lead 63B <br /> 7 Lead 46B <br /> Chromuim 93B <br />OS-04-98 5 Lead 37 <br /> 6 Lead 43 <br /> 7 Lead 21 B <br /> 15 Cadmium 6.2B <br />* =Concentrations in parts per billion <br />B =Concentration considered cross-contamination <br />J =Estimated concentration <br />Other metals (not listed) have been detected at concentrations less than their respective N.C. 2L <br />Groundwater Standard. <br />