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WN <br /> A Coming Cmpany <br /> Control limits for accuracy (percent recovery) are based an the av,rage, <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 /> r' enough historical data, EPA limits or advisory limits are set, with the <br /> approval of the quality Assurance departmc:;t. <br /> :r 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 samplea <br /> are reported on an "as received" basis, i.e., no correction is made for <br /> moisture content, unless the method req-0 res or the client requests that <br /> such correction be rude. <br /> r=' Results are on the attached data sheets. <br /> iia <br /> � a <br /> On <br /> ` ' L <br /> dra - <br /> p <br /> i p <br /> kA r <br /> �[ti <br /> t . <br /> i <br />