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VMS <br /> IWO <br /> s� µ <br /> Consultant Project Number: 203-175.3289'72 <br /> Contract Ntrabar: N46M0244-9-X <br /> Facility Number: 9-0342 <br /> Work Order Number: D001760 <br /> Report Issue Elate: February 8, 1990 <br /> Table 5 <br /> MATRIX SPIKE (MS) AND MATRIX SPIKE DUPLICATE (MSD) RECOVZR1 <br /> AND RELATIVE PERCENT DIFFERENCE (RPD) REPORT <br /> Purgeabte Arermtica and Total Petrolelm Hydrocarbons <br /> as Gasoline in Sail <br /> EPA Method 8920/8015 <br /> Date of Analysis: 02/03/90 Client ID: P-2 <br /> Semple Used: 02 Unita: <br /> mg/Kp <br /> Analyte <br /> Sample Concentration MS, % MSO, X <br /> Result A&ed MS Result Recovery MSD Result Recovery <br /> Benztm No 2.86 2.68 94 2.63 92 <br /> Toluene ND 2.86 2.65 93 2.58 90 <br /> Ethylbenzene NO 2.86 2.71 95 2.61 91 <br /> Xylene (total) ND 8.58 8.19 95 7.93 92 <br /> Acceptability Llmits7 <br /> t.. Analyte RPD, % Max inm RPD, % X Recover <br /> L� Benzene 2 y <br /> 30 53 - 114 <br /> Toluene 3 <br /> Ethylbenzene 30 S6 - 710 <br /> 4 30 57 - 112 <br /> Xylene (total) 3 <br /> 30 57 - 112 <br /> ND Not Detected above the statistical detection limit <br /> 7a Acceptability limits are derived from the 99%confidence interval of at( 7rop!es during the <br /> previous quarter. <br /> / 3 <br /> GTEL Concord, CA Page 7 of 7 <br /> D001760.DOC <br /> ff TEL <br /> - - - EN VIPONME N7A9 - - - <br /> LAaORATOPIES, INC - <br />