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March 5, 2013 Lab ID : STK1331633 <br /> Vincent Lucchesi Customer : 3-17102 <br /> Quality Control - Organic <br /> Constituent Method Date/ID Trpe Units Cone QC Data DQO Note <br /> Organic <br /> 1.2-Dibromoethane(EDB) 504 02/27/13:202201 SBL Blank ug/L ND <0.02 <br /> ` LCS ug/L 0.2950 86.9% 70-130 <br /> BS ug/L 0.2950 88.3% 70-130 <br /> BSD ug/L 0.2950 85.3% 70-130 <br /> BSRPD a 0.5868 3.4% 1530 <br /> 1,3-Dibromopropme 504 02/27/13:202201 SBL Blank ug/L 0.5868 87.9% 70-130 <br /> LCS ug/L 0.5868 93.3% 70-130 <br /> BS ug/L 0.5868 95.9% 70-130 <br /> BSD ug/L 0.5868 96.8% 70-130 <br /> BSRPD ug/L 0.5868 0.9'/0 <�0 <br /> b BCP 504 02/27/13:202201SBL Blank ug/L ND <0.01 <br /> LCS ug/L 0.2950 81.6% 70-130 <br /> BS ug/L 0.2950 81.2% 70-130 <br /> BSD ug/L 02950 82.8% 70-130 <br /> kft BSRPD u 0.5868 1.9% <30 <br /> 13DBP 504.1 02/28/13:202900SBL CCV ug/L 7.481 102% 70-130 <br /> CCV uWL 9.975 94.1% 70-130 <br /> BCP 504.1 02/28113:202900SBL CCV ug/L 2.006 90.7% 70-130 <br /> ` CCV u 5.015 84.9% 70-130 <br /> DB 504.1 02l28/13:20290058L CCVng/L 2.006 92.2% 70-130 <br /> CCV u L 5.015 86.7% 70-130 <br /> Definition <br /> ` CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <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 recovery. <br /> BS :Blank Spikes-A blank is spiked with a known amount of analyte.It is prepared to verify that the preparation process is not <br /> affecting analyte recovery. <br /> BSD :Blank Spike Duplicate of BS/BSD pair-A blank duplicate is spiked with a known amount of analyte.It is prepared to verify that <br /> the preparation process is not affecting analyte recovery. <br /> BSRPD :BS/BSD Relative Percent Difference(RPD)-The BS relative percent difference is an indication of precision for the preparation <br /> i and analysis. <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 /> tr <br /> 6. <br /> V <br /> it <br /> Page 8 of 8 <br />