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F'w <br /> i <br /> r� <br /> Project Number: SFS-175-0204.72 <br /> Consultant Proie;y Number: 16000.250-044 <br /> Conuact Number: N46CWCO24:•9-X <br /> Ea Faciiity Number., 9-6155 <br /> Work Order Number: 0010846 <br /> Report Issue Date: November 6.1990 <br /> i <br /> Tat le 5 <br /> MATRIX SPIKE(MS)AND MATRIX SPIKE DUPLICATE(MSD) RECOVERY <br /> AND RELATIVE PERCENT DIFFERENCE(RPD)REPORT <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline in Soil <br /> EPA Method 8020/8015 <br /> Date of Analysis: 11/05/90 Client ID: TC20 <br /> sample Used: C010748-10 Units: mg/Kg <br /> Sample Concentration MS, % MSD, % <br /> Analyte Result Added MS Result Recovery MSD Recovery <br /> r Result <br /> Benzene ND 2.85 1.75 61 1.65 58 <br /> Toluene ND 2.86 1.82 64 1.71 60 <br /> 1_ Ethylbenzene ND 2.86 1.91 67 1.79 63 <br /> `"' _= Xylene notal) 0.03 8.58 5.61 65 5.25 61 <br /> j <br /> °- Acceptability Limits' <br /> Analyte RPD,% Maximum APD,% %Recovery <br /> 1,.. Benzene 5 30 50-112 <br /> Toluene6 30 50-108 <br /> Ethylbenzene 6 30 50-113 11 <br /> Xylene(total) 6 30 50-114 <br /> <# = Not Detected at the indicated detection limit <br /> 1 = Acceptability limits are derived from the 99%confidence interval of all samples during the <br /> previous quarter. <br /> j , <br /> l G i EL Concord=CA Page a:7 <br /> C01C6:6.DQC GT <br /> E L <br /> w. <br /> IX Y I FO NM 4N.A: <br /> IA E 0 RA}O 9 1 E3 iY- <br />