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Sequoia Walnut <br /> N WiLane <br /> t Creek CA 9459$ <br /> 15) <br /> (925)988-9600 <br /> Analytical www <br /> (925)988-9673 <br /> tip sequoialabs corn <br /> Gettler Ryan,InL -Dublin Project Tosco <br /> 6747 Sierra Court Suite 7 Project Number Tosco 4 11192 Reported <br /> Dublin CA,94568 Project Manager Doug Lee 10-May-01 11 24 <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-7-15(WI04569-01)Soil Sampled 24-Apr-01 00 00 Received 26-Apr-01 16 00 A-03 <br /> Ethanol ND 25 mg/kg 100 IE07009 07-May-01 10-May-01 EPA 8260B <br /> tert-Butyl alcohol ND 2 5 " <br /> Methyl tert-butyl ether ND 010 " <br /> Di-isopropyl ether ND 0 10 " <br /> Ethyl tert-butyl ether ND 0 10 " <br /> 1,2-Dichloroethane ND 010 " <br /> tert-Amyl methyl ether ND 0 10 " <br /> 1,2-Dibromoethane ND 010 " <br /> Surrogate Dibromofluoromethane 106% 50-150 " <br /> Surrogate 1 2-Dichloroethane-d4 114 % 50-150 " <br /> B-8-14 5 (W 104569-02)Soil Sampled 24-Apr-01 00 00 Received 26-Apr-01 16 00 <br /> Ethanol ND 25 mg/kg 100 IE07009 07-May-01 09-May-01 EPA 8260B <br /> 01-i <br /> Butyl alcohol ND 25 <br /> hyl tent-butyl ether ND 0 10sopropyl ether ND 0 10 <br /> Ethyl tert-butyl ether ND 010 " <br /> 1,2-Dichloroethane ND 010 <br />—tert-Amyl-methyl ether —ND—0 10 - - -- <br /> 1,2-Dibromoethdne ND 010 " <br /> Surrogate Dibromofluoromethane 102 % 50-150 <br /> Surrogate 1,2-Dichloroethane-d4 114 % 50-150 <br /> B-1-15(W104569-03)Soil Sampled 24-Apr-010000 Received 26-Apr-01 16 00 <br /> Ethanol ND 25 mg/kg 140 1E07009 07-May-01 09-May-01 EPA 8260B <br /> tert-Butyl alcohol ND 2 5 " <br /> Methyl tert-butyl ether ND 0 10 " <br /> Di-isopropyl ether ND 0 10 " <br /> Ethyl lert-butyl ether ND 0 10 " <br /> 1,2-Dichloroethdne ND 010 " <br /> tert-Amyl methyl ether ND 0 10 " <br /> 1,2-Dlbromoethdne ND 010 " <br /> Surrogate Dibromofluorom ethane 102 % 50-150 " <br /> Surrogate 1 2-Dichloroethane-d4 110 % 50-150 " <br /> oia Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Tins analytical report must be reproduced in its enhret} <br /> Page 6 of 12 <br />