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Lam <br /> Sequoia Walnut404 N wget Creels,CA 945984599 <br /> � ► Analytical FAX <br /> KD (925)988-9600 <br /> (925)988-9673 <br /> www sequoialabs csm <br /> Gettler Ryan,Inc -Dublin Project Tosco W208192 <br /> 6747 Sierra Court Suite J Project Number Tosco# 11192 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 18-Oct-02 12 52 <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 /> MW-7(W208192-07)Water Sampled 08-Aug-02 16 00 Received 09-Aug-02 16 15 <br /> Ethanol ' ND 500 ug/l 1 2H 12008 12-Aug-02 12-Aug-02 EPA 8260B <br /> tert-Butyl alcohol 130000 1000 50 15-Aug-02 " <br /> Methyl tert-butyl ether(MTBE) 92 20 1 12-Aug-02 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether 36 20 <br /> tert-Amyl methyl ether 53 20 " <br /> 1,2-Dichloroethane ND 20 " <br /> Ethylene dibromide ND 20 " <br /> Surrogate Dibromofluoromethane 986% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 101 % 50-150 " <br /> Acetone ND 20 " <br /> tert-Butyl acetate ND 20 " AF-T <br /> tert-Butyl formate ND 20 " AF-T <br /> Surrogate Dibromofluoromethane 986% 50-150 " <br /> Surrogate 1 1-Dichloroethane-d4 101% 50-150 " <br /> Surrogate Toluene-d8 954% 50-150 . <br /> Surrogate 4-Bromofluorobenzene 988% 50-150 " <br /> MW-8(W208192-08)Water Sampled 08-Aug-02 10 00 Received 09-Aug-02 16 15 <br /> Ethanol ND 500 uW1 1 2H12008 16-Aug-02 16-Aug-02 EPA 8260B <br /> tent-Butyl alcohol ND 20 " <br /> Methyl tert-butyl ether(MTBE) ND 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 " <br /> tert-Amyl methyl ether ND 20 " <br /> 1,2-Dichloroethane ND 20 " <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromethane 113% 50-150 " <br /> Surrogate 1,2-Dtchloroethane-d4 106% 50-150 " <br /> Sequoia Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain <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 /> 5 of 17 <br />