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� 4 <br /> 'FORE I <br /> i' <br /> WIROk8ENT44 <br /> 6A UCALANAL►SSLA S O RATO R I ES, INC. <br /> 0 4A AETAMEIW J.J.EILIN,REG.CHEM.ENaR. <br /> 4100 PIERCE RD., BAKERSFIELD,CALIFORNIA 93308 PHONE 327.4811 <br /> EiT7{/TPH GASOLINE <br /> Quality Control Data <br /> Water Work Spike ID: 828.3-5 <br /> 1710 Plain St Analysis Date: 24-Oat-89 <br /> Escalon, CA 95320 Sample Matrix: Soil <br /> Attention: Robert Juncal Units: ug/g <br /> Quality Control <br /> for Lab Nos: 8283-2, 8283-3, 8283-4, 8283-5, $283-6, 8263-7 <br /> One sample in twenty is selected as a represeatative matrix which is <br /> spiked. The percentage recovery (% Rec) of the spike is a relative <br /> meamm of the accuracy of the analysis. The comparison of the spike <br /> with a duplicate spike is a measure of the relative precision of the <br /> analysis. <br /> Cone. Conc. DuP <br /> in Spike Added to Spike Spike Spike <br /> Constituent Sample Spike Rec 95 Rec E7PI) <br /> -� <br /> r ------ ----- ------------------------ -- <br /> -- ----------------------- ' <br /> Penzene 0.00 5.02 84.20 85.94 2.05 <br /> Toluene 0.00 5.16 89.98 91.52 1.70 <br /> F Ethyl Benzene 0.00 5.01 95.56 96.41 0.89 <br /> 7f p-Xylene 0.00 5.06 94.86 95.37 0.54 <br /> ra`Xylene 0.00 5.01 99.34 99.60 0.25. <br /> o-Xylene 0.00 5.00 96.63 97.58 0.98 <br /> i <br /> $ TPH Gas 0.00 301.06 92.46 85.81 7.46 <br /> ,a <br /> r it <br /> Li <br /> QC Coazaents: <br /> Spiked Sample Concentration - Sample Concentration <br /> z X Recovery = _------------------------------------------------ X 100 <br /> ` (Concentration of Spike) <br />� RPE} (Relative Percent Difference)} �* Spiked Sample Con:. - Spiked Duplicate Sample Conc. <br /> 7W <br /> r`4 <br /> -------------------------------- -------- X 100 <br /> Ufa } (Average Cone. of Spikes) <br />