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(DRION <br /> described below QA/QC samples prepared by the laboratory will include method <br /> i <br /> blanks, matrix spike and matrix spike duplicates, and laboratory control samples <br /> The laboratory results will be reviewed in general accordance with EPA guidelines for <br /> data validation The data validation process will include reviewing laboratory results for <br /> the following parameters <br /> ❑ Completeness of the data package <br /> ❑ Compliance with EPA-required holding times <br /> ❑ Agreement of dilution factors with reported detection limits <br /> ❑ Presence or absence of analytes in the method blanks <br /> ❑ Agreement of duplicate samples <br /> ❑ Percent recovery and relative percent difference results for matrix spike and <br /> matrix spike duplicate analyses <br /> ❑ Percent recovery results for laboratory control samples <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> • <br /> 1 <br /> 1 S\BFS\STOCKTON\WKP001 DOC 10/27/99 3-2 <br />