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Ensec0 <br /> # �ontrol limits for accuracy (percent recovery) are based on the average, <br /> aistorical percent recovery +/-3 standard deviation units. Control limits <br /> precision (relative percent difference)fference) range from 0 (identical <br /> y; duplicate CCS 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 /> aoprovai of the Quality Assurance department. <br /> IV Anal vsis 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 /> ii 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 /> ., <br /> results are on the attached data sheets. <br /> a <br /> i <br /> i <br /> r <br /> k� <br /> ti <br /> k<< <br /> k.c <br /> p.k <br /> i - <br /> �r <br /> f , <br /> lir <br /> !4 <br /> _ is <br />