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Control limits for accuracy (percent recovery) are based on the average, <br />historical percent recovery +/-3 standard deviation units. Control limits <br />for precision (relative percent difference) range from 0 (identical <br />duplicate DCS results) to the average, historical relative percent <br />difference + 3 standard deviation units. In cases where there is not <br />enough historical data, EPA limits or advisory limits are set, with the <br />approval of the Quality Assurance department. <br />IV Analysis Results <br />Test methods may include minor modifications of published EPA Methods such <br />as reporting limits or parameter lists. Reporting limits are adjusted to <br />reflect dilution of the sample, when appropriate. Solid and waste samples <br />are reported on an "as received" basis, i.e., no correction is made for <br />moisture content, unless the method requires or the client requests that <br />such correction be made. <br />Results are on the attached data sheets. <br />v <br />Enseco <br />CORNING C111111 <br />