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r fl J S r E j <br /> , 1 <br /> ' Section No '�14 • 1 <br /> I Revision No 0 <br /> ` Date: September 5, 1991 <br /> Page 3 of 4 <br /> s Ant-or meatinna or samule identity numbers An analysis of sample <br /> completeness will b`e conducted 'after each, sampling round results are <br /> returned. Completeness is defined ,as <br /> C (1 - number' of�defec_tive results 100 <br /> total number of requested analysis, <br /> • A._C value less than 95% will, indicate corrective action inorderto avoid <br /> repeating similar problems in future sampling rounds ' <br /> 14 4 Assessment <br /> Field data 'will 'be assessed by evaluating adherence to the quality <br /> ' ' <br /> assurancefiprogram guidelines Data collected historically in the study areas <br /> r , <br /> will be reviewed and used during the investigation 'The 'kind of data to be <br /> used may include water level measurements, chemical data on water and 'soil, • <br /> geologic subsurface descriptions, (e' g y, drillers logs)"and interpretations <br /> of the hydrologic conditions of the study areas 1 <br /> , <br /> Each data point used in the investigation will be evaluated against the ' <br /> QAPP standards for a particular type of data collection For example, a <br /> water level measurement collected at a particular well will be assigned a <br /> high level of confidence if the data point is accompanied by information on <br /> the type-of water level measur-ing-device, the measuring point identification, <br /> E <br /> pumping status of the measured well, tidal cycle, E construction details of the <br /> well, and the general pumping status of adjacent wells, if any of these data <br /> should be missing, the recorded, historical water level will be assigned a <br /> 5 <br /> lower level of confidence, and may be rejected for the analysis of historical <br /> conditions . <br /> 14-3 + <br />