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i <br /> Entech Analytical 'LabsInc. <br /> {Y� 3334 Victor Court Santa Clara, CA 95054 • (408) 588-0200 Fax (408) 588-0201 <br /> I <br /> Quality Control Results Summary <br /> QC Batch#: WMS21026B <br /> Units: }lg/L <br /> Matrix: Liquid Date Analyzed: 5/22/01 <br /> L <br /> I <br /> Parameter Method Blank Spike Spike Sample Spike QC Type %Recovery RPD RPD Recovery <br /> Result Sample lD Amount Result Result Limits Limits <br /> Test: Oxygenates by EPA 8260B <br /> Methyl-t-butyl Ether EPA 8260B ND 20 18.2 LCS 9d.0 65.0-135,0 r <br /> Surrogate Surrogate Recovery= Control Limits(%) I <br /> 4-13romofluorobenzene 96 65 - 135 <br /> 4 <br /> Dibromofluoromethane 92 57 - 139 i <br /> Toluene-dg 92 65 - 135 <br /> LTest; Oxygenates by EPA 8260B <br /> Methyl-t-butyl Ether EPA 8260B ND 20 19.2 LCSD 96.0 5.35 25.00 65.0-135.0 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> 4-Bromoflu0robLnzenc 98 65 - 135 <br /> Dibromofluoromethane 95 57 - 139 <br /> Toluene-d8 91 65 - 135 <br /> i <br /> L <br /> L <br /> L <br /> L <br /> L <br /> L <br /> � LI <br /> I <br /> i <br /> { L .. <br /> � L <br /> Environmental Analysis Since 7983 <br /> L <br />