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' r <br /> Sequoia 444 N Wlget torte <br /> Walnut Creek, CA 94598 <br /> 4 (925)9&3-%W <br /> Analytical <br /> FAX(925)988-9673 <br /> Gettler Ryan,Inc -Dublm Project Unocal <br /> 6747 Sierra Court Sinte J Project Number Unocal#10187 Reported <br /> Dublin CA,94568 Project Manager Deanna L Hardung 09-Mar-00 10 44 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> U4(W002567-05)Water Sampled 22-Feb-0014 51 Received 24-Feb-00 13 05 <br /> Ethanol ND 500 ugfl 1 0008023 07-Mar-00 07-Mar-00 EPA 8260A <br /> tert-Butyl alcohol ND 100 <br /> Methyl tert-butyl ether ND 2 0 <br /> Di-isopropyl ether ND 2 0 <br /> Ethyl tert-butyl ether ND 2 0 <br /> tert-Amyl methyl ether ND 2 0 <br /> Surrogate Dibromofluoromethane 960% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 940% 50-150 " <br /> U-5(W002567-06)Water Sampled 22-Feb-00 11 11 Received 24-Feb-00 13 05 <br /> Ethanol ND 500 ue l 0008023 07-Mar-00 07-Mar-00 EPA 8260A <br /> tert-Butyl alcohol ND 100 " <br /> Methyl tent-butyl ether ND 2 0 " <br /> Di-isopropyl ether ND 20 <br /> E rt-butyl ether ND 20 " <br /> t yl methyl ether ND 20 <br /> Surrogate Dibromofluoromethane 100% 50-150 " <br /> Surrogate 1,2 Dichloroethaned4 102% 50-150 " <br /> U-6(W002567-07)Water Sampled 22-Feb-00 10 41 Received 24-Feb-00 13 05 <br /> Ethanol ND 500 ug/l 1 0008023 07-Mar-00 07-Mar-00 EPA 8260A <br /> tert-Butyl alcohol ND 100 <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 106% 50-150 " <br /> Surrogate 1,2 Dichloroethane-l4 100% 50-150 " <br /> S Wa Analytical-Walnut Creek The results In this report apply to the samples analyzed to accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety <br /> Page 9 of 22 <br />