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May 12, 2011 Lab ID : STK1133395 <br /> Musco Family Olive Environmental Customer : 3-11544 <br /> Quality Control-Organic <br /> Constituent Method Date/113 Type Units Conc. QC Data DQO Note <br /> 'iOrganic <br /> OC 5310C 05/11/2011:205118 Blank mg/L ND X0.3 <br /> BS mglL 25.00 114% 75-114 <br /> BSD mglL 25.00 116% 75-114 435 <br /> BSRPD m /L 25.00 1.1% X3.0 <br /> 5310C 05/1112011:206840 CCV ppm 25.00 109% 67-122 <br /> CCV ppm 25.00 1 109% 1 67.122 <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 /> 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 /> 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 /> Explanation <br /> 435 :Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. <br /> I <br /> Page 11 of I1 <br />