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1 <br /> 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# WMS 1 I 117B Units µg/L. <br /> Matrix Liquid Date Analyzed: 8/7/01 <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 Oxygenates by EPA 8260B <br /> Methyl-t-butyl Ether EPA 82608 ND 20 193 LCS 965 650-1350 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> 4-Bromofluorobenzene 83 65 - 135 <br /> ' Dibromofluoromethane 93 57 - 139 <br /> Toluene-d8 98 65 - I35 <br /> Test Oxygenates by EPA 8260B <br /> Methyl-t-butyl Ether EPA 82609 ND 20 2087 LCSD 1044 782 2500 65 0-1350 <br /> Surrogate Surrogate Recovery Control Limits(%) <br /> 4-Bromofluorobenzene 82 65 - 135 <br /> Dibromofluoromethane 94 57 - 139 <br /> ' Toluene-d8 97 65 - 135 <br /> I <br /> 1 <br /> i <br /> Environmental Analysis Since 1983 <br />