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ggg <br /> t <br /> Project Number: SFB-175-0204.72 <br /> Consultant Project Number: 1P 80.242-034 <br /> f + Contract Number: N46CWCO244-9-X <br /> Facility Number: 9•&155 <br /> Work order Number. =120 <br /> Report Issue Date: September 11,1990 <br /> i , <br /> 1 Table 5 <br /> MATRIX SPIKE(MS)AND MATRIX SPIKE DUPLICATE(MSD) RECOVERY <br /> AND RELATIVE PERCENT DIFFERENCE(RPD)REPORT <br /> f <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline in Soil <br /> EPA Method 8020/8015 <br /> t-4 <br /> Client 10: 2-A.6,C <br /> Date of Analysis; 09/06/90 Units: mg/KS <br /> rs <br /> Sample Used: 0009120-02 <br /> �.; Sample Concentration MS, % MSD, % <br /> Analyte Result Added MS Result Recovery Rest Recovery <br /> -- <br /> r..j <br /> Benzene NO 2.86 2.12 74 2.10 73 <br /> I"a2.11 74 <br /> Toluene NO <br /> 2.86 2.13 74 <br /> Ethylbenzene ND 2.86 2.19 77 2.14 75 <br /> X lens total NO 8.58 6.37 74 6.25 73 <br /> Acceptability LimitS1 <br /> Analyte RPD,% Maximum RPD,°.6 %Recovery <br /> Benzene 1 30 50-112 <br /> Toi;ane 0 30 50-108 <br /> Ethylbenzene 3 30 50 113 <br /> xylene(total) 1 30 50-114 <br /> <# = Not Detected at the indicated detection limit <br /> 1 = Acceptability limits are derived from the 99%confidence interval of all samples during the <br /> previous quarter. <br /> �. GTEL Concord,CA Page 7 of 7 <br /> cc0912o.00c <br /> GTELw <br /> E H'IIPO It SI f N r AL <br /> . t� AE09ArU <br />