Laserfiche WebLink
February 9,2010 Lab ID : STK1030077 <br /> Stockton Steel Customer : 3-2690 <br /> Quality Control -Inorganic <br /> Constituent Method WWII) Type Units Cone. QC Data DQO Note <br /> Metals <br /> Mercury 7470 01/06/2010:200143 Blank mg/kg ND <0.03 <br /> LCS mg/kg 0.2398 86.9% 85-115 <br /> MS mg/kg 0.2398 77.9% 75-125 <br /> (SP 1000097-001) MSD mg/kg 0.2398 199% 75-125 435 <br /> MSRPD m 0.2398 67.8% <_20 435 <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 /> LCS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. <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 anaiyted.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 /> O :Data unlit Ob'ective-This is the criteria 29a nst which the quality control data is compared. <br /> Explanation <br /> :The CCB was greater than the DQO.However,all results were either five times greater than the CCB concentration or ND relative <br /> 220 to the PQL. <br /> 435 :Sample matrix ma be affecting this anal e.Data was accepted based on the LCS or CCV recove . <br /> Page 7 of 7 <br />