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SOP NUMBER 28.0 <br />Page 19 of 24 <br />Anal tical Data Validation <br />TABLE 2 <br />DATA VALIDATION QUALIFIER CODES AND BIAS DIRECTION CODES <br />Qualifier <br />Code Data Quality Condition <br />Resulting In Assigned Qualification <br />general use <br />HT Holding time requirement was not met <br />P Preservation requirement(s) not met <br />MB Method blank or preparation blank contamination <br />LCS Laboratory control sample evaluation criteria not met <br />MS Matrix spike and/or matrix spike duplicate accuracy evaluation criteria not met <br />D Duplicate orspike duplicate recision evaluation criteria not met <br />FB Field blank contamination <br />RB Rinsate blank contamination <br />FD Field duplicate evaluation criteria not met <br />TvP Partial analysis results greater than total analysis results; difference is greater than <br />accuracy limitations of the method <br />ID Target compound identification criteria not met <br />is Internal standard evaluation criteria not met <br />CO Suspected carry-over <br />SQL Reported sample concentration is between the method detection limit and the sample <br />uantitation limit. <br />RL Reporting limit exceeds decision criterion for nondetects <br />LR Over linear ran e without re-analysis <br />inorganic methods <br />ICV Initial calibration verification evaluation criteria not met <br />CCV Continuing calibration verification evaluation criteria not met <br />CCB Continuing calibration blank contamination <br />ICS Interference Check Sample evaluation criteria not met <br />PDS Post-digestion spike recovery outside acceptance range <br />MSA Method of standard additions correlation coefficient < 0.995 <br />DL Serial dilution results did not met evaluation criteria <br />_ <br />organic methods <br />TUNE Instrument performance (tuning) criteria not met <br />ICAL Initial calibration evaluation criteria not met <br />CCAL Continuing calibration evaluation criteria not met <br />SUR Surrogate recovery outside acceptance range <br />Bias Codes Bias Direction <br />H Bias in sample result likely to be high <br />L Bias in sam le result likely to be low <br />I Bias in sample result is indeterminate <br />Powertech <br />Rev 28-1 JAB <br />4/23/2007 <br />Attachment A <br />R Squared Inc <br />2