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Projact Number. SFR-175-0204.72 <br /> Consultant Proiect Number: 16000.250-044 <br /> Contract Number: N46C.WCO244-M <br /> Facility Number: 9-6155 <br /> Work Order Number: 0010838 <br /> Report Issue Date: November 5,1990 <br /> Table 5 <br /> MATRIX SPIKE(MS)AND MATRIX SPIKE DUPLICATE(MSD) RECOVERY <br /> AND RELATIVE PERCENT DIFFERENCE(RPD)REPORT <br /> Total Petroleum Hydrocarbons <br /> as Gasoline in Soil <br /> EPA Method 8015 <br /> -.: Date of Analysis: 11/01/90 Units: mg/Kg <br /> Sample Used: 0010650-04 Client ID SP-4 <br /> Sample Concentration MS, % MSD, % <br /> Analyte Result Added MS Result Recovery MSD Recovery <br /> Result <br /> Benzene ND 2.86 2.55 89 2.49 87 <br /> Toluene ND 2.86 2.56 90 2.49 87 <br /> Ethylbenzene ND 2.86 2.54 89 2.46 87 <br /> Xylene(totaq iVD 8.58 7.49 87 7.35 86 <br /> Acceptability Limitsl <br /> Analyte RPD,% Maximum RPD,90 %Recovery <br /> Benzene 2 30 50-112 <br /> Toluene 3 30 50-108 <br /> Ethylbenzene 2 30 50-113 <br /> Xylene(total} 1 30 50-114 <br /> c# = 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 /> w. <br /> GTEL Concord,CA Page 7 of 7 -- - <br /> CO1D636.DOC <br /> GTEL <br /> . - - ENV14ONatFHr�l - <br /> - - � 1��0a AfOaI ES•1+C - - - <br />