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u2@R laboratories <br /> QUALITY CONTROL DATA <br /> METHOD: EPA 82608 <br /> AL Job No:E10391 <br /> Instrument:HP GC/MS <br /> Matrix:Water <br /> Surrogate Standard Recovery Summary <br /> 01.Date Analyzed Client ID Lab ID <br /> Recovery %Recovery Toluene %Recovery 4- <br /> Dib romofluoromethane d8 Bromofluorobenzene <br /> 10/25/04 Blank BLKE1025 98 100 98 <br /> 10/25/04 BM-Tank 1 E10391 105 98 97 <br /> Matrix Spike Recovery Summary <br /> Lab ID Client ID Analyte Percent Recovery <br /> %RPD %LCS <br /> MS / MSD <br /> E10381 Z2(A,B,C,D)-3 1,1-Dichloroethene 109 / 111 2 102 <br /> Benzene 99 / 98 1 102 <br /> Trichloroethene 93 / 93 0 97 <br /> Toluene 98 / 98 0 100 <br /> Chlorobenzene 96 / 97 1 98 <br /> Note:Daily method blank showed no contamination at or above the reporting limits. <br /> All laboratory quality control parameters were found to be within established limits. <br /> 2905 Roilrood Avenue, Cores, CA 95307 • Phone (209) 581 -9280 • Fox (209) 581-9282 <br /> emoil: i�=orDorgonlobs.com <br />