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r <br /> July 16, 2004 Lab ID SP 406530 <br /> rGround Zero Analysis Customer 3-14996 <br /> Quality Control - Organic <br /> rExplanations <br /> 360 CCV above Acceptance Range (AR) Samples which were non detect for this analyte were accepted <br /> 435 Sample matrix may be affecting this analyte Data was accepted based on the LCS or CCV recovery <br /> r Deruntions <br /> Blank Method Blank - Prepared to verify that the preparation process is not contnbutmg contamination to the samples <br /> BS/BSI) Blank Spikes - A blank is spiked with a known amount of analyte it is prepared to verify that the preparation <br /> r process is not affecting analyte recovery <br /> CCV Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria <br /> ND Non-detect - Result was below the DQO listed for the analyte <br /> DQO Data Quality Objective - This is the cnteria against which the quality control data is compared <br /> r <br /> r <br /> r <br /> r <br /> r <br /> 1 <br /> r <br /> r <br /> r <br /> SP 406530 Quality Control Page 9 <br /> I <br />