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1 <br /> 1 <br /> uWn laboratories <br /> QUALITY CONTROL DATA <br /> I METHOD EPA 8260B <br /> AL Job No E02131 <br /> Instrument HP GC/MS <br /> IMatrix Water <br /> Surrogate Standard Recovery Summary <br /> IDate Analyzed Client I D Lab ID %Recovery %Recovery Toluene- %Recovery 4- <br /> Dibromofluoromethane d8 Bromofluorobenzene <br /> 02/09/04 Blank BLKE0209 98 106 114 <br /> 02/09/04 TW-Influ E02131 108 106 121 <br /> 02/09/04 TW-C-1 E02132 105 108 114 <br /> 02/09/04 TW-C-2 E02133 110 106 114 <br /> 02109/04 TW-Efflu E02134 104 105 113 <br /> 1 <br /> 1 <br /> 1 • <br /> I <br /> Matrix Spike Recovery Summary <br /> Lab ID Client ID Analyte Percent Recovery <br /> y %RPD %LCS <br /> MS / MSD <br /> E02134 TW-Efflu 1,1-Dtchloroethene 1111109 2 107 <br /> Benzene 123 1 119 3 118 <br /> Trtchloroethene 1141110 4 109 <br /> Toluene 122 / 117 4 117 <br /> Chlorobenzene 111 / 107 4 105 <br /> Note Daily method blank showed no contamination at or above the reporting Itmits <br /> All laboratory quality control parameters were found to be within established limits <br /> 1 <br /> I <br /> I3037 Fifth St , Ceres, CA 95307 • Phone (209) 581-9280 • Fax (209) 581-9282 <br />