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Entech Analytical Labs, Inc. <br /> 3334 Victor Court • Santa Clara, CA 95054 • (408) 588-0200 • Fax (408) 588-0201 <br /> Quality Control Results Summary <br /> QC Batch#: WMS31003 Units: µg/L <br /> ' Matrix: Liquid Date Analyzed: 5/3/01 <br /> ' Parameter Method Blank Spike Spike Sample Spike QC Type %Recovery RPD RPD Recovery <br /> Result Sample ID Amount Result Result Limits Limits <br /> Test: EPA 624 <br /> 1,1-1)ichloroethene EPA 624 ND 20 20.3 LCS 101.5 65.0-135.0 <br /> ' Benzene EPA 624 ND 20 20.3 LCS 101.5 65.0-135.0 <br /> Chlorobenzene EPA 624 ND 20 16 I-CS 80.0 65.0-135.0 <br /> Methyl-t-butyl Ether EPA 624 20 15.6 LCS 78.0 65.0-135.0 <br /> ' Toluene EPA 624 ND 20 16.6 LCS 83.0 65.0-135.0 <br /> Trichloroethene EPA 624 ND 20 20.8 LCS 104.0 65.0-135.0 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> ' 4-Bromofluorobenzene 88 65 - 135 <br /> Dibromofluoromethanc 99 57 - 139 <br /> Toluene-d8 88 65 - 135 <br /> ' Test: EPA 624 <br /> 1,1-Dichloroethene EPA 624 ND 20 19.9 LCSD 99.5 1.99 25.00 65.0-135.0 <br /> Benzene EPA 624 ND 20 20.4 LCSD 102.0 0.49 25.00 65.0-135.0 <br /> Chlorobenzene EPA 624 ND 20 18.8 LCSD 94.0 16.09 25.00 65.0-135.0 <br /> 0 ethyl-t-butyl Ether EPA 624 20 15.8 LCSD 79.0 1.27 25.00 65.0-135.0 <br /> aluene EPA 624 ND 20 19.7 LCSD 98.5 17.08 25.00 65.0-135.0 <br /> Trichloroethene EPA 624 ND 20 21 LCSD 105.0 0.96 25.00 65.0-135.0 <br />' Surrogate Surrogate Recovery Control Limits(%) <br /> 4-Bromofluorobenzene 103 65 - 135 <br /> Dibromofluoromethane 100 57 - 139 <br /> Toluene-d8 104 65 - 135 <br /> r <br /> r <br /> t <br /> • <br />' Environmental Analysis Since 1983 <br />