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ENVIRONMENTAL c <br /> CHEMICAL ANALYSIS - LABORATORIES, INC. <br /> PETROLEUM J.J.EGLIN,REG.CHEM.ENGR. <br /> 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 <br /> BTX/TPH GASOLINE <br /> Q-1ality Control Data <br /> Water Work Spike ID: 143-5 <br /> 1710 Main St Analysis Date: 16-Jan-90 <br /> Escalon, CA 95320 Sample Matrix: Soil <br /> Attention: Robert J-ncal Units: il;/g <br /> Quality Control <br /> for Lab Nos: 143-2, 143-4, 143-5, 143-13, 143-14, 143-15 <br /> One sample in twenty is selected as a representative matrix which is <br /> spi-ked. The percentage recovery (% Pec) of the spike is a relative <br /> measure of the accuracy of the analysis. The comparison of the spike <br /> with a duplicate spike is a rr,easure of the relative precision of the <br /> analysis. <br /> Dup <br /> Spike Spike Spike <br /> __�nstituent % Rec % Rec RPD <br /> ----------------------------------------- <br /> Benzene 77.21 82.31 6.39 <br /> Toluene 82.01 84.00 2. 40 <br /> Ethyl Benzene 78.55 78.32 0.29 <br /> QC Comments: <br />