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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#: SMS2010418 Units: pg/Kg <br /> Matrix: Solid Date Analyzed: 4/18/01 <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 8260B 42.7-155.0 <br /> I,1-Dichloroethene EPA 8260B ND 50 47.4 LCS 94.8 <br /> Benzene EPA 8260B ND <br /> 50 50.1 LCS 100.2 43.1-151.0 <br /> Chlorobenzene EPA 8260B ND <br /> 50 46.9 LCS 43.8 34.7-152.8 <br /> Methyl-t-butyl Ether EPA 8260B ND <br /> 50 47.4 LCS 94.8 74.6-146.8 <br /> Toluene EPA 8260B ND 50 48.5 LCS 97.0 66,9-113.8 <br /> Trichloroethene EPA 8260E ND <br /> 50 49.0 LCS 98.0 47.1-150.5 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> 4-Bromofluorobenzene 102 56 131 <br /> Dibromofluoromethane 108 55 - 156 <br /> Toluene-d8 100 65 - 141 <br /> Test: EPA 8260B <br /> 1,1-Dichlaroethene EPA 8254E ND 50 44.7 LCSD 89.4 5.86 25.00 42.7-155.0 <br /> 48.8 LCSD 97.6 2.b3 25.00 43.i -15L0 <br /> Benzene EPA 8260B ND 50 <br /> Chlorobenzene EPA 8260E ND 50 45.8 LCSD 91.6 2.37 25.00 34.7-152.8 <br /> 0ethyl-t-butyl Ether EPA 8260B ND 54 47.5 LCSD 95.0 0.21 25.00 74.6-146.8 <br /> Toluene EPA 8260B ND 50 46.7 LCSD 93.4 3.78 25.40 66,9-113.8 <br /> 25.00 47.7-!54.5 <br /> Trichloroethene EPA 8260B ND 50 48.5 LCSD 97.0 1.03 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> 4-Bromotluorobenzene 102 56 - 131 <br /> Dibromofluoromethane 107 55 - 156 <br /> Toluene-d8 99 65 - 141 <br /> Environmental Analysis Since 1983 <br />