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9 0 <br /> Entech Ana lytical Labs, Inc. <br /> 3334 Victor Court e Santa Clara, CA 95054 a (408) 588-0200 o Fax (408) 588-0201 <br /> Quality Control Results Summary <br /> QCBatch M WGC62783 Units: µg/L <br /> Matrix: Liquid Date Analyzed: 3/14/2003 <br /> Parameter Method Blank Spike Spike Sample Spike QCType %Recovery RPD RPD Recovery <br /> Result SamplclD Amount Result Result Limits Limits <br /> Test: TPH as Gasoline <br /> TPI-I as Gasoline EI'A 8015 M ND 250 241.9 LCS 96.8 65.0-135.0 <br /> Surrogate Surrogae Recovery Control Limits(%) <br /> i 4-Bramo(luorobenzene 84.8 65 - 135 <br /> Test: BTEX <br /> Benzene EPA 8020 ND 8 7.55 LCS 94.4 65.0-135.0 <br /> Ethyl Benzene EPA 8020 ND 8 7.91 LCS 98.9 65.0-135.0 <br /> Toluene EPA 8020 ND 8 7.5 LCS 93.8 65.0-135.0 <br /> Xylenes,total EPA 8020 ND _ 24 23.53 LCS 98.0 65.0-135.0 <br /> Surrogate - SurrogateRecovery Control Lim (%) <br /> i 4-BramaOuorobcnzanc 868.6 GS - 1355 <br /> Test: TPH as Gasoline <br /> TPI1 as Gasoline EPA 8015 M ND 250 235.62 LCSD 94.2 2.63 25.00 65.0-135.0 <br /> Surragnte Surrogate Recovery Control Limits(%) j <br /> 4-Bromollvorobcnzcnc 88.8 GS - 135 <br /> Test: BTEX <br /> Benzene EPA 8020 ND 8 7.39 LCSD 92.4 2.14 25.00 65,0-135.0 <br /> Ethyl Benzene EPA 8020 ND 8 7.63 LCSD 95.4 3.60 25.00 65.0-135.0 <br /> Toluene EPA 8020 ND 8 7,28 LCSD 91.0 2.98 25.00 65.0-135.0 <br /> Xylenes,total EPA 8020 ND 24 22.82 LCSD 95.1 3.06 25.00 65.0-135.0 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> 4-Bromolluorobewcue 89.9 65 - 135 <br /> Environmental Analysis Since 1983 <br />