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819 Sinker Ave Ste 8 <br /> Sacramento,CA 95834 <br /> i!DSequoia (916)921-9600 <br /> -0 100 <br /> ,v4W Analytical wwscFAX q 6)92 scorn <br /> www se uoialabs coin <br /> CO-Ryan-Dublin, Project TOSCO 11192,Stockton,CA 5211573 <br /> 671FPSierra Court,Ste J Project Number NIA Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/06/02 15 34 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Dilution Batch Prepared Analyzed Method Notes <br /> Analyte Result Limit Units <br /> MW-1 S211573-02 Water Sampled 11/15/020000 Received.11/19/02 16 45 <br /> Teri-butyl alcohol 7300 500 ugA 5 2110445 11/27/02 11/28/02 EPA 82608 E <br /> Di-isopropyl ether ND 10 " <br /> Ethyl tert-butyl ether ND 10 " <br /> Tert-amyl methyl ether ND 10 „ <br /> Ethanol ND 2500 <br /> 1,2-Dichloroethane ND 10 " <br /> 1,2-Dibromoethane(EDB) ND 10 <br /> Surrogate 1,2-DCA-d4 111 % 60-140 " " <br /> R-05' <br /> MW-3 (S211573-03)Water Sampled 11/75/02 14 23 Received 11/18/02 16 45 <br /> Tert-butyl alcohol 180000 25000 ug11 250 2110445 11/27/02 11/28/02 EPA 8260B <br /> Di-isopropyl ether ND 500 <br /> Ethyl tert-butyl ether ND 500 <br /> Tert-amyl methyl ether ND 500 <br /> Ethanol ND 120000 " <br /> lchloroethane ND 500 <br /> ], romoethane(EDB) ND 500 " <br /> Surrogate 1,2-DCA-d4 112% 60-140 " <br /> MW-4 5211573-04 Water Sampled 11/1510213 10 Received 11/18/02 16 45 <br /> Tert-butyl alcohol ND 100 ugA 1 2110445 11/27/02 11/28/02 EPA 8260B <br /> " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tent-butyl ether ND 20 " <br /> Tert-amyl methyl ether ND 20 <br /> Ethanol ND 500 <br /> 1,2-Dtchloroethane <br /> ND 20 <br /> 1,2-Dibromoethane(EDB) <br /> ND 20 " <br /> Surrogate 1,2-DCA-d4 125 % 60-140 " <br /> to Analytical -Sacramento The results in this report apply to the samples analyzed in 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 in its entirety <br /> Page 8 of 16 <br />