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DATA VALIDATION QUALIFIER DEFINITIONS <br /> The following definitions provide brief explanations of the data validation Qualifiers <br /> assigned to results in the data review process <br /> Flag _ Data Qualifier Explanation <br /> U The analyte was analyzed for, but was not detected above the reported sample <br /> quantitation limit <br /> J The analyte was positively identified; the associated numerical value is the <br /> approximate concentration of the analyte in the sample <br /> N The analysis indicates the presence of an analyte for which there is presumptive <br />' evidence to make a "tentative identification " <br /> NJ The analysis indicates the presence of an analyte that has been "tentatively <br /> identified" and the associated numerical value represents its approximate <br /> concentration <br /> UJ The analyte was not detected above the reported sample quantitation limit <br /> However, the reported quantitation limit is approximate and may or may not <br /> represent the actual limit of quantitation necessary to accurately and precisely <br /> measure the analyte in the sample <br /> R The sample results are rejected due to serious deficiencies in the ability to analyze <br /> the sample and meet quality control criteria The presence or absence of the <br /> analyte cannot be verified <br /> I <br />