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Project Number SFS-175-0204 72 <br /> Consultant Project Number 16000-250-044 <br /> Contract Number N46CWCO244-9-X <br /> Facility Number M155 <br /> Work Order Number C008737 <br /> Report Issue Date August 31, 1990 <br /> Table 5 <br /> MATRIX SPIKE (MS) AND MATRIX SPIKE DUPLJCATEAND RELATIVE PERCENT DIFFERENCE (RPDMREPREPORT ORT <br /> Purgeabie Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline in Soil <br /> EPA Method 8020/8015 <br /> Date of Analysis 08/28/90 Client ID 6-A,B,C <br /> Sample Used 0008737-02 Units mg/Kg <br /> Sample Concentration MS, % MSD, °,G <br /> Analyte Result Added MS Result Recovery Result Recovery <br /> Benzene <0 005 286 196 69 214 75 <br /> Toluene 002 286 1 98 69 216 76 <br /> Ethylbenzene <0 005 2 86 202 71 220 77 <br /> Xylene total 002 858 614 72 668 78 <br /> Acceptability Limltsl <br /> Analyte <br /> RPD, % Maximum RPD, % % Recovery <br /> Benzene 8 30 50 - 112 <br /> Toiuene 10 30 50 - 108 <br /> Ethylbenzene 8 30 50 - 113 <br /> Xylene (total) <br /> 8 30 50- 114 <br /> <# = Not Detected at the Indicated detection Amit <br /> 1 = Acceptability limits are derived from the 99% confidence Interval of all samples during the previous <br /> quarter <br /> ISTEL Concord CA Page 7 of 7 <br /> C008737 DOC GTEL <br /> S NVI ROH ME Y A t <br /> LABORA{OR'" ivC <br />