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1551 Indusinal Road <br /> a <br /> ) (650)Sequoia San Carlos CA 94070 <br /> 232-9600 <br /> IWOAnalytical FAX(650)232-9612 - <br /> •7 www sequoialabs com <br /> Gettler-RyanlGeostrategies(I) Project Tosco(1) <br /> 6747 Sierra Court,Suite J Projeci Number Tosco(Unocal)SS#6981,Stockton,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 12/27/01 09 39 <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B_ <br />-- - - v—�--T -- -- - -- — - ---- Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> VW-?(L]12085-17)Water Sampled 12/13/01 12 45 Received 12/13/03 1940 R-05 <br /> Ethanol ND 17000 ugA 3333 1120084 12/21/01 12/21/01 EPA 8260B <br /> 1,2-Dibromoethane ND 33 ^ <br /> 1,2-Dichloroethane ND 33 <br /> Di-isopropyl ether ND 33 <br /> Ethyl tert-butyl ether ND 33 <br /> Methyl tert-butyl ether ND 33 <br /> 'Pert-amyl methyl ether ND 33 " <br /> Teri-butyl alcohol ND 670 " <br /> Surrogate 1,2-Dichloroethane-d4 110% 70-130 ^ <br /> Surrogate Toluene-d8 108% 70-130 " <br /> PTW-1 (L112085-18)Water Sam pled_12113/0109:10 Received 12/13/01 19 40 _--- w <br /> Ethanol ND 500 ug/I 1 1120090 12/21/01 12/21/01 EPA 8260B <br /> 12-Dibromoethane ND 10 " <br /> 1,2-Dichloroethane 49 1 0 <br /> DI-isopropyl ether ND 1 0 " <br /> Ethyl tert-butyl ether ND 1 0 <br /> Methyl tert-butyl ether 75 10 " ^ <br /> Tert-amyl methyl ether ND 10 ^ <br /> Tert-butyl alcohol ND 20 <br /> Bali ogate 1,2-Dichloroethane-d4 103% 70-130 <br /> Surrogate Toluene-d8 104% 70-130 " <br /> Sequoia Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chain-Jw <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 13 of 22 <br />