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SOP NUMBER 28.0 <br />Page 18 of 24 <br />Analytical Data Validation <br />TABLE 1 <br />DATA VALIDATION QUALIFIER DEFINITIONS <br />01 I I 11 IER l9FFIN1TIONS '" <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 numeric value is the <br /> approximate concentration of the analyte in the sample (i.e., estimated value). <br />UJ The analyte was not detected above the reported sample quantitation limit. However, <br /> the reported quantitation limit is approximate and may or may not represent the <br /> actual limit of quantitation necessary to accurately and precisely measure the analyte <br /> 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 associate numerical value represents its approximate <br /> concentration. <br />R The data are unusable and have been rejected due to serious deficiencies in the ability <br /> to analyze the sample and meet quality control criteria. The presence or absence of <br /> the analyte can not be verified. <br />' USEPA Contract Laboratory Program National Functional Guidelines for Inorganic Data Review, February 1994. <br />2 USEPA Contract Laboratory Program National Functional Guidelines for Organic Data Review, October 1999. <br />Powertech <br />Rev 28-1 JAB <br />4/23/2007 <br />Attachment A <br />R Squared Inc