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Mi <br /> s =: <br /> i i i!:: !10 <br /> DNMMUTAL <br /> LABORATORIES, INC. <br /> dPL7d1CAL/lNAL151S <br /> J'FTFiL1LFIfiI 1 J.EGLIN.REG.CHEM.ENGR. <br /> _ 4100 PIERCE RD., BAKERSFIELD,CALIFORNIA 93309 PHONE 327-4911 <br /> MX/M DIESEL <br /> Quality Control Data <br /> Dames and Moore Spike ID: 6095-2 <br /> 1320 E. Shaw Ave Ste. 110 <br /> Fresno, CA 93710 Analysis Date: 16-Aug-89 <br /> Attention: Burton Gilpin Units: ug/g <br /> Quality Control <br /> for Lab Nos: 6095-2, 6095-8, 6095-13, 6095-16, 6095-17, <br /> 6095-24, 6095--28, 6095-30, <br /> One sample in twenty is selected as a representative matrix which is <br /> — <br /> spiked- The percentage recovery (% Rec) of the spike is a relative <br /> measure of the accuracy of the analysis. The comparison of the spike <br /> with a &];plicate spike is a measure of the elative precision of the <br /> analysis. <br /> Conc. Conc. Dup <br /> in Spike Added to Spike spike Spike <br /> Constituent Sample Spike Rec X Rec RPD <br /> --------------------------------------------- <br /> - TEH Diesel 0.00 100.01 103.51 107.91 4.16 <br /> QC Comments: <br /> Spiked Sample Concentration - Sample.Concentration <br /> % Recovery ------------------------------- ------------- X 100 <br /> (Concentration of Spike) <br /> RPA (Relative Percent Difference). = <br /> Spiked Sample Conc. - Spiked Duplicate Sample Conc, <br /> ---------------------------------------------------- <br /> X loo <br /> (Average Concentration of Spikes) <br />