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Sequoia 4a x �iLane <br /> Walnut Creek,CA 94598 <br /> �► (925)988-9600 <br /> Analytical <br /> FAX(925)986-9673 <br /> www sequoialabs ccm <br /> Gettler Ryan,Inc -Dublin Protect Tosca W208192 <br /> 6747 Sierra Court Suite J Project Number Tosco# 11192 Reported <br /> Dublin CA,94568 Protect 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-] 208192-02 Water Sampled 08-Aug-02 15 15 Received 09-Aug-02 16 15 <br /> Ethanol ND 500 ugfl 1 2H 12008 12-Aug-02 12-Aug-02 EPA 8260E <br /> tert-Butyl alcohol 3800 100 5 15-Aug-02 " <br /> Methyl tert-butyl ether(MTBE) ND 20 1 " 12-Aug-02 " <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tent-Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane ND 20 " <br /> Ethylene dibromide ND 20 <br /> Surrogate Dibromofluoromethane 102% 50-150 " <br /> Surrogate 1 2-Dichloroethane-d4 103% 50-150 ^ <br /> MW-3 208192-03 Water Sampled 08-Aug-02 16 50 Received 09-Aug-02 16 15 <br /> Ethanol ND 500 ugn I 2H 12008 12-Aug-02 12-Aug-02 EPA 8260B <br /> tert-Butyl alcohol 240000 10000 500 " 1116-Aug-02 " <br /> Methyl tert-butyl ether(MTBE) 62 20 1 12-Aug-02 " <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether 44 20 ^ <br /> cert-Amyl methyl ether 60 20 ^ <br /> 1,2-Dichloroethane ND 20 " <br /> Ethylene dibromide ND 20 ^ <br /> Surrogate Dibromofluoromethane 100% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 994% 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 100% 50-150 <br /> Surrogate 1,2-Dichloroethane-d4 994% 50-150 " <br /> Surrogate Toluene-d8 962% 50-150 <br /> Surrogate 4-Bromofluorobenzene 102% 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 to its entirety <br /> 3 of 17 <br />