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Sequoia 404 N WiLane , <br /> Walnut Creek CAA 94598 <br /> 6 (925)988-9600 <br /> 4D Analytical <br /> FAX(925)988-9673 <br /> IT Corporation Project Sears <br /> 4005 Port Chicago Hwy Project Number Sears-Stockton Reported ' <br /> Concord CA,94520 Project Manager Dave Poley 24-Nov-99 15 23 <br /> Volatile Organic Compounds by EPA Method 8260A- Quality Control <br /> Sequoia Analytical -Walnut Creek 8' <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Uiuts Level Result %REC Limits RPD Lunn Notes <br /> Batch 9K23015 prepared 22-Nov-99 Usmg EPA 5030E tP/T]- <br /> Matrix Spike Dup (9K23015-MSD1) Source W911214-01 , <br /> 1,1-DEchloroethene 00231 00010 mg/kg 00250 ND 924 60-140 7 17 25 <br /> Benzene 00240 00010 00250 ND 960 60-140 9 15 25 <br /> Trichloroethene 00255 00010 00250 ND 102 60-140 189 25 ' <br /> Toluene 00261 00010 00250 ND 104 60-140 221 25 <br /> Chlorobenzene 00253 00010 00250 ND 101 60-140 195 25 <br /> Surrogate Dibromolluoromethane 00226 00250 904 50-150 , <br /> Surrogate 12-Dichloroefh ane-d4 00241 00250 964 50-150 <br /> Surrogate Toluene-d8 00253 L" 00250 101 50-150 <br /> Surrogate 4-Bromofluorobemene 00250 00250 100 50-150 ' <br /> 1 <br /> �N Sequoia Analytical-Walnut Creek The results in tins report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced en i is entire <br /> Dimple S Aarma, io%cDt Manager Page 36 of 46 <br />