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1 <br /> July 13, 2006 Lab ID : STK635172 <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 06/24/2006:A203 Blank ug/L ND <0.01 <br /> LCS ug/L 0.2949 107% 70-130 <br /> BS ug/L 0.2949 115% 70-130 <br /> BSD ug/L 0.2949 112% 70-130 <br /> BSRPD ug/L 3.0% <30 <br /> 504.1 06/24/2006:A 01-CCV ug/L 5.000 113% 70-130 <br /> 02-CCV ug/L 10.00 123% 70-130 <br /> 1,3-Dibromopropane-Surrogate 504.1 06/24/2006:A203 Blank ug/L 0.5868 134% 70-130 565 <br /> LCS ug/L 0.5868 125% 70-130 <br /> BS ug/L 0.5868 131% 70-130 560 <br /> BSD ug/L 0.5868 130% 70-130 <br /> 504.1 06/24/2006:A 01-CCV ug/L 9.975 128% 70-130 <br /> 02-CCV I ug/L 1 9.975 1 140% 1 70-130 1 565 <br /> Explanations <br /> 560 Surrogate percent recoveries not within the Acceptance Range (AR) due to suspected matrix interferences. <br /> 565 Surrogate percent recoveries not within the Acceptance Range (AR). Please see Case Narrative for <br /> explanation. <br /> Dermitions <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 /> BS/BSD 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 /> STK635172: Quality Control Page 2 <br />