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u <br /> April 24, 2007 Lab ID : STK733183 <br /> Neil Anderson & Associates Customer : 3-9574 <br /> Quality Control - Organic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> DBCP 504.1 04/14/2007:A203 Blank ug/L ND <0.01 <br /> LCS ug/L 0.2949 96.5% 70-130 <br /> BS ug/L 0.2949 96.1% 70-130 <br /> BSD ug/L 0.2949 99.5% 70-130 <br /> BSRPD ug/L 3.5% 530 <br /> 504.1 04/14/2007:A 00-CCV ug/L 5.000 97.8% 70-130 <br /> 1,3-Dibromopropane-Surrogate 504.1 04/14/2007:A203 Blank ug/L 0.5868 94.0% 70-130 <br /> LCS ug/L. 0.5868 97.1% 70-130 <br /> BS ug/L 0.5868 93.2% 70-130 <br /> BSD ug/L 0.5868 90.2% 70-130 <br /> BSRPD ug/L. 3.3% <30 560 <br /> 504.1 04/14/2007:A 00-CCV ug/L 9.975 92.5% 70-130 <br /> Explanations <br /> 560 Surrogate percent recoveries not within the Acceptance Range (AR) due to suspected matrix interferences. <br /> Definitions <br /> Blank Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> LCS Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte <br /> recovery. <br /> MS/MSD Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication o <br /> how that sample matrix affects analyte recovery. <br /> BSBSD Blank Spikes - A blank is spiked with a known amount of analyte. It is prepared to verify that the preparation <br /> process is not affecting analyte recovery. <br /> ICB Initial Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br /> ICV Initial Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br /> CCB Continuing Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <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 criteria against which the quality control data is compared. <br /> STK733183: Quality Control Page 2 <br />