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March 30, 2015 Lab ID : STK1532135 <br /> Paul Abbate Customer : 3-13758 <br /> Quality Control - Radio <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Radio <br /> Alpha 900.0 03/10/15:203914caa CCV cpm 8997 40.2% 37-45 <br /> CCB cpm 0.0800 0.18 <br /> Gross Alpha 900.0 03/09/15:202727caa Blank pCi/L 1.36 3 <br /> LCS pCi/L 180.6 84.2% 75-125 <br /> MS pCi/L 180.6 84.2% 60-140 <br /> (SP 1500574-002) MSD pCi/L 180.6 82.8% 60-140 <br /> MSRPDpCi/L 180.6 1.7% <30 <br /> Alpha 908.0 03/25/15:204601caa CCV cpm 8985 43.2% <br /> CCB c m 0.0600 0.12 <br /> Uranium 908.0 03/25/15:203446caa RgBlk pCi/L 0.16 1 <br /> LRS pCi/L 20.97 70.2% 54-105 <br /> BS pCi/L 20.97 95.2% 75-125 <br /> BSD pCi/L 20.97 92.6% 75-125 <br /> BSRPD I pCi/L 1 20.97 1 2.8% 1 C20 <br /> Definition <br /> CCV :Continuing 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 /> Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> RgBlk :Method Reagent Blank-Prepared to correct for any reagent contributions to sample result. <br /> LCS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. <br /> LAS :Laboratory Recovery Standard-Prepared to establish the batch recovery factor used in result calculations. <br /> MS :Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample <br /> 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 /> 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 /> MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> BSRPD :BS/BSD Relative Percent Difference(RPD)-The BS relative percent difference is an indication of precision for the preparation <br /> andanalysis. <br /> D O :Data QualityObjective-This is the criteria against which the quality control data is compared. <br /> Page 22 of 22 <br />