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t . <br /> Project Number. SF&175-020.1,72 <br /> Consultant Protect Number. 16000-250.044 <br /> Contract Number: WSGWCG244-9�.X <br /> Facility Number: "1$5 <br /> Work Order Number: C010620 <br /> " Fkport Issue Date: ')ctober 26,1990 <br /> Table 5 <br /> MATRIX SPIKE(MS)AND MATRIX SPIKE DUPLICATE(MSD) RECOVERY <br /> AND RELATIVE PERCENT DIFFERENCE(RPD) REPORT <br /> Purgeable Aromatics in Soil <br /> MODIFIED EPA METHOD 6020 <br /> _ Date of Analysis. 10/23/90 Client 10: SPC <br /> Sample Used: C010578.09 Units: mg/Kg <br /> Sample Concentratio MS MS, % MSD MSD, % <br /> Analyte Result nAdded Result Recovery Result Recovery <br /> Benzene <0.005 2.86 2-20 77 2.19 77 <br /> Toluene <0.005 2.85 2.27 79 2.27 79 <br /> Ethylbenzene <0.005 2.66 2.31 81 2.35 82 <br /> _Xylene(total) <0.015 j 8.58 6.94 31 7.06 82 <br /> s Acceptability limits' <br /> Analyte RPD,% Maximum RPD,% %Recovery <br /> Benzene 0 30 50 112 <br /> Toluene 0 30 50-108 <br /> Elhylbenzene 1 30 50-113 <br /> Xylene(total) 1 30 50-114 <br /> r- <br /> I <# = 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 /> G72e Conccrd,CA Page 7 of 7 <br /> C010520.DCC <br /> GTEL . <br /> - - • 'Hula C.vuEvra� - - _ <br />