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Pro' ':'Number: SFB-175-0204.72 <br /> Consultant Pro}ect Number: 203-175-32 9 <br /> C"r act Number: N46 44-g-X <br /> Facility Number: 940557 <br /> Work Order Number: D005261 <br /> Report Issue Date: May 11, 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 Soil <br /> EPA Method 8020/8015 <br /> Date of Analysis: 05/09/90 Client ID: WO-11 B <br /> Sample Used: D005261-02 Units: mg/Kg <br /> Sample Concentration MS, % MSD, % <br /> Analyte Result Added MS Result Recovery MSD Recovery <br /> Result <br /> Benzene <0.005 2.86 1.79 63 1.76 62 <br /> Toluene 0.01 2.86 1.80 63 1.79 62 <br /> Ethylbenzene 0.01 2.86 1.79 62 1.79 62 <br /> X ene total 0.06 8.58 5.44 63 5.46 63 <br /> Acceptability Limitsl <br /> Analyte RPD, % Maximum RPD, % % Recovery <br /> Benzene 2 30 50 - 112 <br /> Toluene 2 30 50- 108 <br /> Ethylbenzene 0 30 50 - 113 <br /> Xyiene (total) 0 30 50 - 114 <br /> i <br /> <# = Not Detected at the indicated detection limit <br /> 1 = Acceptability limits are derived from the 99% confidence interval of all samples during the pre- <br /> vious quarter. <br /> GTEL Concord,CA Page 6 of 6 <br /> D005261.DOC <br /> MGTEL <br /> E N V I R ON M E N T A L <br /> LABORA10RI 15 <br /> . INC. <br />