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404 N Wiget Lane <br /> Sequoia Walnut Creek C94598 <br /> (925) 988 8-9600 <br /> FAX(925)988-9673 <br /> Analytical www seguosalabs corn <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco# 11192 Reported <br /> Dublin CA, 94568 Project Manager Doug Lee 10-May-01 I7 06 <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 Note, <br /> B-5 (W104571-01)Water Sampled 25-Apr-01 00 00 Received 26-Apr-01 16 00 <br /> Ethanol ND 500 ug/1 1 IE09011 09-May-01 09-May-01 EPA 8260B <br /> tert-Butyl alcohol ND 20 " <br /> Methyl tert-butyl ether 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-Dtchloroethane ND 20 " <br /> Ethylene dibromide ND 20 " <br /> Surrogate Dtbromofluoromethane 940% 50-150 <br /> Surrogate 1 2-Dtchloroethane-d4 900% 50-150 <br /> B-6 (W104571-02)Water Sampled 25-Apr-01 00 00 Received 26-Apr-01 16 00 <br /> Ethanol ND 500 ug/1 1 IE09011 09-May-01 09-May-01 EPA 8260B <br /> "utyl alcohol ND 20 <br /> yl tent-butyl ether 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-Dtchloroethane - ND 2 0 —"-----"---- --�� <br /> Ethylene dtbromtde ND 20 1. " " <br /> Surrogate Dtbromofluoromethane 104 % 50-150 " <br /> Surrogate 12-Dtchloroethane-d4 112 % 50-150 " <br /> CPT-1 (W104571-03)Water Sampled 25-Apr-01 00 00 Received 26-Apr-01 16 00 <br /> Ethanol ND 500 ug/1 1 lE09011 09-May-01 09-May-01 EPA 8260B <br /> tert-Butyl dlcohol ND 20 " <br /> Methyl tent-butyl ether 120 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tent-butyl ether ND 20 " <br /> tett-Amyl methyl ether ND 20 " <br /> 1,2-Dtchloroethane 23 20 " <br /> Ethylene dibromtde ND 20 " <br /> Surrogate Dtbromofluoromethane 104% 50-150 " <br /> Surrogate 12-Dtchloroethane-d4 112% 50-150 " <br /> uota Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced nt its entirety <br /> Page 2 of 9 <br />