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Sequoia 404 N. Wiget Lane <br /> Walnut Creek,CA 94598 <br /> (925)988-9600 <br /> Analytical <br /> FAX(925)988-9673 <br /> F f . ttler Ryan,Ina-Dublin Project: Unocal <br /> [Dublin <br /> ` 147 Sierra Court Suite J Project Number: Unocal#11195 Reported: <br /> CA,94568 Project Manager: Deanna L.Harding 09-Dec-99 08:34 <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 /> MW-1(W911580-02)Water Sampled: 19-Nov-99 15:10 Received. 22-Nov-99 16:00 <br /> tert-Butyl alcohol ND 5000 ug/l 50 9LO1009 03-Dec-99 03-Dec-99 EPA 8260A <br /> Methyl tert-butyl ether 3000 100 <br /> Di-isopropyl ether ND 100 <br /> Ethyl tert-butyl ether ND 100 <br /> tert-Amyl methyl ether ND 100 <br /> Surrogate:Dibromofluoromethane 106% 50-150 <br /> Surrogate:1,2-Dichloroethane-d4 96.0% 50-150 <br /> MW-2(W911580-03)Water Sampled: 19-Nov-99 13:23 Received: 22-Nov-99 16:00 <br /> tert-Butyl alcohol ND 500 ug/1 5 9LO1009 03-Dec-99 03-Dec-99 EPA 8260A <br /> Methyl tent-butyl ether 150 10 <br /> Di-isopropyl ether ND 10 <br /> Ethyl tert-butyl ether ND 10 <br /> tert-Amyl methyl ether ND 10 <br /> Surrogate:Dibromofluoromethane 110 % 50-150 <br /> JSitrrogate:1,2-Dichloroethane-l4 102% 50-150 " <br /> t rr1'V-3(W911580-04)Water Sampled: 19-Nov-99 14:00 Received:22-Nov-9916.00 <br /> tert-Butyl alcohol ND 100000 ugll 1000 9LO1009 03-Dec-99 03-Dec-99 EPA 8260A <br /> Methyl ter(-butyl ether 38000 2000 <br /> Di-isopropyl ether ND 2000 <br /> Ethyl tert-butyl ether ND 2000 <br /> tert-Amyl methyl ether ND 2000 <br /> Surrogate:Dibromofluoromethane 110% 50-150 <br /> Surrogate: 1,2 Dichloroethane d4 104% 50-150 " <br /> Sequoia Analytical-Walnut Creek The resulrs in this report apply to the samples analyzed in accordance with the c&dn of <br /> custody document.This analytical report must be reproduced in i is entirety. <br /> A an$.Kemp, a ora ory Drrector <br /> Page 6 of 12 <br /> I <br />