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ENVIRONMENTAL f" <br /> CHEMICAL ANALYSIS LABORATORIES, INC. <br /> PETROLEUM J.J.EGLIN.REG.CHEM. ENGR. <br /> 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 <br /> PCB Quality Control Data <br /> I water work <br /> 1710 Main St. sample Matrix: Soil <br /> Escalon, CA 95320 Spike ID: 3692-9 <br /> Attention: QC Set: 3692-9 <br /> Quality Control <br /> for Lab Nos : 3692-9 <br /> I one sample in ten is selecreu a!�: cer,,resentacive matrix Hich is <br /> spiked. The percentage reccver./ cif spike Js a relative measure <br /> of the accuracy of the analysis . `?'he ,:,, parison of the spike :•pith <br /> a duplicate spike is a measure ',Dt ti1� =i,larive precision of the <br /> analysis . <br /> fDate of Calibration: 30-Apr-90 <br /> Quality Control Paramazer Results <br /> I <br /> -------------------------- <br /> Daily <br /> -------- --------------Daily Mid Range RPD 00 <br /> Spike PR 02 <br /> ISpike Duplicate PR 90 <br /> Spike Average RPD 9 <br /> RPD = Relative Percent Difference <br /> PR = Percent Recovery <br /> Comments: <br /> I <br /> I <br /> I _ <br />