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ker <br /> Sic 8 <br /> Sequoia 81amnto,CA 5834 <br /> Sacramento,CA 95634 <br /> ► (916)921-9600 <br /> Analytical <br /> FAX(916)92k-0100 <br /> www scquotalabs com <br /> Gettler-Ryan-Dublin Project TOSCO 11192,Stockton,CA $211573 <br /> 6747 Sierra Court,Ste J Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/06/02 15 34 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2110445- EPA 5030B JPITI <br /> Blank(2110445-BLKI) T - Prepared 11/27/02 Analyzed 11/28/02 <br /> Teri-butyl alcohol ND 100 ug/l <br /> 17t-isopropyl ether ND 20 " <br /> Ethyl tent-butyl ether ND 20 " <br /> Ten-amyl methyl ether ND 20 " <br /> Ethanol ND 500 " <br /> 1,2-Dichloroethane ND 20 " <br /> 1,2-Dibromoethane(EDB) ND 20 " <br /> Surrogate 1 2-DCA-d4 287 250 115 60-140 <br /> Laboratory Control Sample(2110445-BS1) Prepared 11/27/02 Analyzed 11128/02 <br /> Surrogate 1 2-DCA-d4 293 ug/I 250 117 60-140 <br /> Matrix 9tke(2110445-MSl) Source 5211573-04 Prepared 11/27/02 Analyzed 11/2$102 <br /> Surrogate 12-DCA-d4 31 9 ug/l 250 118 60-140 <br /> Matrix Spike Du (2110445-MSD/) Source S211573-04 Prepared 11/27/02 Analyzed 11/28/02 <br /> Surrogate 1 2-DC4-d4 314 ug/l 250 116 60-140 <br /> Sequoia Analytical - Sacramento The results to this report apply to the samples analyzed to accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced to its entirety <br /> Page 15 of 16 <br />