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<strong>QATS</strong> <strong>SPECIAL</strong>-<strong>REQUEST</strong> & <strong>SITE</strong>-<strong>SPECIFIC</strong> <strong>PESs</strong><br />
PES RESULTS EVALUATION AND REPORTING<br />
Special-Request PES Results Evaluation<br />
Results are typically submitted to <strong>QATS</strong> Lab for<br />
evaluation.<br />
Analytical results are evaluated using:<br />
Established acceptance limits from PES scoring database – 95%<br />
and 99% confidence intervals.<br />
Acceptance limits calculated using the HBAL database statistics –<br />
95% and 99% confidence intervals based on nominal values.<br />
Method-defined acceptance criteria for QA samples.<br />
Acceptance limits based on nominal value of analytes (i.e., +/percentage<br />
of the nominal value.<br />
Project-defined acceptance limits.<br />
19th Annual NARPM Training Conference June 2-5, 2009 Atlanta, Georgia 31
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