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Sequoia 404 e ,CA Lane <br /> Walnut Creels,CA 94598 <br /> {925}988-9600 <br /> Analytical wFAX{925}988-9673 <br /> ww.sequoialabs.coabs.com <br /> Gettier Ryan,Inc. -Dublin Project: Tosco <br /> 6747 Sierra Court Suite.1 Project Number: Tosco# 11195 Reported: <br /> Dublin CA, 94568 Project Manager: Doug Lee I I-Mar-02 07:42 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical- Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> B-4(W202365-04)Water Sampled: 25-Feb-02 00:00 Received:25-Feb-02 17:50 <br /> Ethanol ND 500 ug/l 1 21326016 27-Feb-02 27-Feb-02 EPA 8260B <br /> tert-Butyl alcohol ND 20 " <br /> Methyl Cert-butyl ether(MTBE) 25 2.0 " <br /> Di-isopropyl ether ND 2.0 " <br /> Ethyl tert-butyl ether ND 2.0 " <br /> tert-Amyl methyl ether ND 2.0 " <br /> 1,2-Dieliloroethane ND 2.0 " <br /> Ethylene dibromide ND 2.0 " <br /> Surrogate: Dibromofluoromethane 98% 50-150 11 " lo " <br /> Surrogate: 1,2-Dichloroethane-d4 87% 50-150 <br /> S-5(W202365-05)Water Sampled:25-Feb-02 00:00 Received:25-Feb-02 17:50 <br /> Ethanol ND 500 ug/l I 2B26016 27-Feb-02 27-Feb-02 EPA 8260B <br /> _-.=?I-Butyl alcohol ND 20 " <br /> E`_`;ethyl tert-butyl ether(MTBE) 3.0 2.0 " <br /> Di-isopropyl ether ND 2,0 " <br /> Ethyl tert-butyl ether ND 2.0 " <br /> tent-Amyl methyl ether ND 2.0 " <br /> 1,2-Dichloroetlâ–ºane ND 2.0 <br /> Ethylene dibromide ND 2.0 f <br /> Surrogate: Dibromofluoromelhane 98% 50-150 <br /> Surrogate: 1,2-Di.chloroethane-d4 82% 50-150 <br /> f <br /> E <br /> i <br /> i <br /> UOla Analytical - Walnut Creels The results in this report apply to the samples analyzed in accordance iviih the chain of <br /> custody document, This analytical report must be reproduced in its entirety. <br /> 5 of 10 F <br /> r <br /> G <br />