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:. 2 <br /> MWO <br /> a <br /> r'" 1 Proj"t Number: SFB-175.0204.72 <br /> ConsvLtant Project Number: 203-175-3289 <br /> Contract Number: N46CWCO244.9-x <br /> Fseliity Number: 9-0342 <br /> tiork Order Number: 0002237 <br /> Report Issue Date: February 20, 1990 <br /> Table 5 <br /> MATRIX SPIKE (MS) AND MATRIX SPIKE DUPLICATE (ASD) RECOVERY <br /> AND RELATIVE PERCENT DIFFERENCE (RPD) REPORT <br /> Purgeable Aromatics and Total Petroleum Hydrocarbons <br /> as Gasoline in Soft <br /> EPA Method 8020/8015 <br /> Date of Analysis: 021,14/90 <br /> Swpte used: 02 Client ID: TARK N2 <br /> Units: eq/K9 <br /> Analyte Result le Concentration MS % <br /> Added MS Result Recovery MSD Result <br /> B_^suene ND 2.86 <br /> 2.22 Recovery <br /> TolueneHD 2.86 2.29 80 <br /> 2.21 77 2.32 81 <br /> Ethytbenzene NO 2.86 <br /> 2.30 80 2.40 $4 <br /> Xylene <br /> (total) NO 8.58 <br /> 6.88 80 T.26 85 <br /> Analyte <br /> Acceptabilfty Limitsl <br /> RPD, X <br /> k t„J Benzene Mai fnn RPD, X <br /> 3 X Recovery <br /> Toluene 5 30 53 - 114 <br /> Ethytbenzene 30 56 - 110 <br /> 530 57- 112 <br /> xy[eux ;tote{) G <br /> 30 57 - 112 <br /> ND = <br /> Not Detected above the statistical 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 age 7 of 7 <br /> GTEL <br /> f V I R04M FN T AL <br /> LAS GRATO➢IFS. IH[, <br />