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lRrIRJNYfNnt ...- <br /> bifWLA(Amur" : LABORATORIES, INC. <br /> J.J MIN REG CNEU ENGR <br /> IfrRMtue 4100 PIERCE RO., RANERSFIELO.CALIFORNIA 03308 PHONE 727.4911 <br /> M/TF9t GASo[,INE <br /> Quality Control Data <br /> Water Fork Spike ID: 9177-1 <br /> 1710 Hain SL Analysis Date: 28-Nov-89 <br /> Escalon, CA 95320 Sample Matrix: Soil <br /> Attention: <br /> limits: ug/9 <br /> gAality control <br /> for Lab Nos: 9303-1 <br /> one sample in twenty is selected as a representative matrix which is <br /> spiked. The percentage recovery (% Roo) of the spike is a relative <br /> msasure of the accuracy of the analysis. The oomp&rison of the spike <br /> with a duplicate spike is a measure of the relative precision of the <br /> analysia. <br /> cone. Cane. DjP <br /> in Spike Added to Spike Spike Spike <br /> Constituent Sample Spike % Rec % Rec WD <br /> -------------------------------------------------------------------- <br /> Benzene 0.00 5.02 91.08 91.71 0.69 <br /> Toluene 0.00 5.16 95.33 94.50 0.87 <br /> Ethyl Benzene 0.00 5.01 94.16 85.01 10.21 <br /> p-Xylene 0.00 5.06 98.44 99.70 1.27 <br /> m-Xylene 0.00 5.01 102.46 105.49 2.91 <br /> o-Xylene 0.00 5.00 100.50 109.43 8.51 <br /> T?H Gas 0.00 301.06 93.17 84.82 9.38 <br /> Qc Com wta: <br /> Spiked Sample Concentration - SmMle Concentration X 100 <br /> % Recovery = -------------------------------------------------- <br /> ------------------ --------------------------- - <br /> (Concentration of Spike) <br /> RPD (Relative Percent Difference) _ <br /> Spiked Sample Conc. - Spiked Duplicate Sample COnc- X 100 <br /> ----------------------------------------------------- <br /> (Average Conc. of Spikes) <br />