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404 N Wlget lane <br /> Sequoia Walnut Geek CA 94598 <br /> (925)988-9600 <br /> � FAX(925)988-9673 <br /> PAnalytcaliwwwsequolalabscom <br /> yan,bic -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-9840 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 16-Oct-00 08 25 <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-1 (W009654-02)Water Sampled 26-Sep-00 07 59 Received 27-Sep-00 16 07 <br /> Ethanol ND 500 ug/1 1 0709033 10-Oct-00 10-Oct-00 EPA 8260B <br /> ter(-Butyl alcohol ND 50 " <br /> Methyl tent-butyl ether 130 2 0 " <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tert-Amyl methyl ether 6 0 20 " <br /> Surrogate Dibromofluoromethane 980% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 880 % 50-150 " <br /> MW-2(W009654-03)Water Sampled 26-Sep-000738 Received 27-Sep-00 16 07 <br /> Ethanol ND 500 uo 1 0709033 10-Oct-00 10-Oct-00 EPA 8260B <br /> tert-Butyl alcohol ND 50 <br /> Methyl tert-butyl ether 22 20 <br /> Di-isopropyl ether ND 20 <br /> tert-butyl ether ND 20 <br /> myl methyl ether ND 20 <br /> Surrogate Dibromofluorotnethane 980% 50-150 " <br /> Surrogate 1,2 Dichloroethane-d4 860% 50-150 " <br /> MW-0(W009654-04)Water Sampled 26-Sep-00 07 25 Received 27-Sep-00 16 07 <br /> Ethanol ND 500 ugA 1 0709033 ]0-Oct-00 10-Oct-00 EPA 8260E <br /> tert-Butyl alcohol ND 50 <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 /> Surrogate Dibromofluoromethane 920% 50-150 " <br /> Surrogate 1,2 Dichloroethane-d4 84 0% 50-150 <br /> S ia.Analytical-Walnut CIeek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Thus analytical report must be reproduced in its entirety <br /> i <br /> Page 2 of 10 <br />