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r .. <br /> i <br /> Enseco <br /> F� <br /> Control limits for accuracy (percent recovery) are based on the average, <br /> a �r historical percent recovery +J-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 /> r . <br /> IH nal sis 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. <br /> s <br /> Results are on the attached data sheets. <br /> t,. <br /> F <br /> 1fA <br /> F , <br /> of <br /> f <br />