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t Lane <br /> Sequoia Walnut Creek C`Ae94598 <br /> (925)988-9600 <br /> 1%„f Analytical FAX (925)988-9673 <br /> Awk <br /> Wier Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J ProjectNumber Tosco#6981 Reported <br /> Dublin CA,94568 Project Manager Mike Mitchener 08-Sep-9914 55 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Recruit Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> VM-7(W908479-05)Water Sampled 21-Aug-99 14 35 Received 24-Aug-99 16 20 0-04 <br /> Ethanol ND 2500 ugll 5 9I07010 06-Sep 99 07-Sep-99 EPA 8260A <br /> tert-Butyl alcohol ND 500 " <br /> Methyl tert-butyl ether 510 10 " <br /> Di-isopropyl ether ND 10 " <br /> Ethyl tent-butyl ether ND 10 <br /> tent-Amyl methyl ether ND 10 <br /> Sunogate Dibromofluoromethane 980% 50-150 " <br /> Surrogate 12-Dichloroethane-d4 720% 50-150 <br /> Si6a Analvtical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the clronof <br /> custody document This analytical report must be reproduced in as entirety <br /> u anile eg ev Project ManaJer v <br /> Page 5 of 8 <br />