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k� <br /> Praiect Number: SF&175-020W.7Z <br /> r Consultant Project Number, 16000.250,-044 <br /> Contract Number: N45CWG0244$X <br /> Fac;l;ry Number: 9-5155 <br /> Work Order Number. CA1o175 <br /> Report Issue Date: October 10,1990 <br /> Table 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 Sol? <br /> EPA Method 8020/8015 <br /> Date of Analysis: 10/05/90 Client ID: <br /> Sample Used: C010176-01 I-A,B,C <br /> Units: mg/Kg <br /> Anal a Sam <br /> Ytple Concentration MS, % MSD, % <br /> Result Added MS Result Recovery MSD Recovery rY <br /> Benzene ND 2.86 2.23 78 <br /> 2.22 78 <br /> Toluene ND 2.86 2.35 82 <br /> Ethyioenzene ND 2 2.35 82 <br /> 86 2.45 86 2.52 88 <br /> X ene{total} ND - 8.58 7.55 88 7.55 <br /> 88 <br /> AnalyteRPD,% Acceptability Llmrtsl <br /> Maximum RPD, °4, %Recovery <br /> Benzene 0 30 <br /> Toluene 50-112 <br /> 0 30 50-108 <br /> Ethylbenzene 2 30 <br /> Xyrene(total) 50-113 <br /> 0 30 50-114 <br /> <# = Not Detected at the indicated detection iimft <br /> 1 ; Acceptability limits are derived from the 99%confidence interval of all samples during the <br /> previous quarter. <br /> GTE!,Ccncord,CA P <br /> 0010170.DOC age 7 of 7 <br /> T E L <br /> EN V I R 0 N%11 Mr/t _ <br /> .. 4A10Rirol'i S. INC - <br />