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November 18, 2011 Lab ID : STK1139867 <br /> Chesney Consulting Customer : 3-15419 <br /> Quality Control - Organic <br /> Constituent Method DateAD Type units Cone. QC Data DQO Note <br /> Organic <br /> 1,3-Dibmmopropane 504 11/14/11:212730ACC Blank ug/L. 0.5868 97.0% 70-130 <br /> LCS ug/L 0.5868 101% 70-130 <br /> MS ug/1. 0.6064 99.0% 70-130 <br /> (STK1139778-001) MSD ug/L 0.6248 99.6% 70-130 <br /> MSRPD u 0.3141 3.6% <30 <br /> BCP 504 11/14/11:212730ACC Blank ug/L ND <0.01 <br /> LCS ug/L 0.2950 95.5% 70-130 <br /> MS ug/L 0.3049 95.9% 70-130 <br /> (STK1139778-001) MSD ug/L 0.3141 94.3% 70-130 <br /> MSRPD u 0.3141 1.3% <_30 <br /> 13DBP 504.1 11/14/11:217022ACC CCV ug/L7.481 105% 70-130 <br /> CCV u JL <br /> 9.975 99.9% 70-130 <br /> BCP 504.1 11/14/11:217022ACC CCV ug/L 2.006 99.7% 70-130 <br /> CCV u 5.015 92.9% 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 /> Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample <br /> MS matrix affects analyte recovery. <br /> MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyted.The recoveries <br /> are an indication of how that sample matrix affects analyte recovery. <br /> MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> 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 /> Page 6 of 6 <br /> 1 <br />