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_ a[FgoR laboratories <br /> QUALITY CONTROL DATA <br /> METHOD: EPA 82808 <br /> AL Job No:D04501 <br /> Instrument:HP GCIMS <br /> Matrix:Soil <br /> Surrogate Standard Recovery Summary <br /> ` Date Analyzed Client ID Lab ID %Recovery %Recovery Toluene- %Recovery 4- <br /> Dibromo8uoromethane d8 Bronrofluorobenzene <br /> 05/02103 Blank BLKDO502 120 98 97 <br /> 05102103 North TK-8' D04501 120 101 122 <br /> 05102/03 South TK-8' D04502 97 100 116 <br /> 05/02/03 Trench-N D04503 119 99 86 <br /> 05/02/03 Dispenser D04504 1 120 1 98 77 <br /> 05/02103 Filter 004505 119 111 120 <br /> 05/02/03 Trench-E 1004506 1 122 98 86 <br /> 05/02/03 Stadgrile4N,S)Comp. ID04507 1 115 97 98 <br /> — <br /> r <br /> Matrix Spike Recovery Summary <br /> Lab ID Client ID Analyte Percent RecoveryMS / MSD %RPD %LCS <br /> — <br /> D05021 G MW-1 1,1-Dichloroethene 75 / 78 4 75 <br /> Benzene 87 / 91 4 91 <br /> Trichloroethene 83 / 87 5 89 <br /> Toluene 88191 3 95 <br /> Chlorobenzene 80 / 87 8 89 <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 /> 3037 Fifth St., Ceres, CA 95307 • Phone: (209) 581-9280 • Fax: (209)581-9282 <br /> 4 <br />