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Entech Analytical Labs, Inc. <br /> . 3334 Victor Court • Santa Clara, CA 95054 • (408) 588-0200 Fax (408) 588-0203 <br /> Quality Control Results Summary <br /> QC Batch#: SMS2010329 Units: µg/Kg <br /> Matrix: Solid Date Analyzed: 3/30/01 <br /> Parameter Method Blank Spike Spike Sample Spike QC Type %Recovery RPD RPD Recovery <br /> Result Sample 1D Amount Result Result Limits Limits <br /> Test: EPA 8260B <br /> 1,1-Dichloroethene EPA 82608 ND 50 37.1 LCS 74.2 42.7- 155.0 <br /> Benzene EPA 8260B ND 50 41.1 LCS 82.2 43.1 - 151.0 <br /> Chlorobenzene EPA 8260B ND 50 45.3 LCS 90.6 34.7- 152,8 <br /> Methyl-t-butyl Ether EPA 8260B ND 50 40.6 LCS 81.2 74.6- 146.8 <br /> Toluene EPA 8260B ND 50 43.1 LCS 86.2 66.9- 113.8 <br /> Trichloroethene EPA 8260B ND 50 43.7 LCS 87.4 47.7- 150.5 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> 4-Bromofluorobenzene 87 56 - 131 <br /> Dibromotluoromethane 84 55 - 156 <br /> Toluene-d8 94 65 - 141 <br /> Test: EPA 8260B <br /> I,I-Dichloroethene EPA 8260B ND 50 36.2 LCSD 72.4 2.46 42.7- 155.0 <br /> Benzene EPA 8260B ND 50 40.9 LCSD 81.8 0.49 43.1 - 15 LO <br /> Chlorobenzene EPA 8260B ND 50 45.3 LCSD 90.6 0.00 34.7-152.8 <br /> thyl-t-butyl Ether EPA 8260B ND 50 39.8 LCSD 79.6 1.99 74,6- 146.8 <br /> Oluene <br /> EPA 8260E ND 50 42.4 LCSD 84.8 1.64 66,9- 113.8 <br /> Trichloroethene EPA 8260B ND 50 44.7 LCSD 89.4 2.26 47.7- 150.5 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> 4-Bromofluorobenzenc 87 56 - 131 <br /> Dibromofluoromethane 81 55 - 156 <br /> Toluene-d8 93 65 - 141 <br /> i <br /> r� <br /> Environmental Analysis Since 7983 <br />