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V <br /> Sequoia 404 N. ,CAet Lane <br /> Walnut Creek,CA 94598 <br /> 4 4 {925}988-9600 <br /> Analytical <br /> FAX{925}988-9673 <br /> Gettler Ryan,Inc.-Dublin Project: Unocal <br /> 6747 Sierra Court Suite I Project Number: Unocal#J 0788 Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 05-Dec-99 09:44 <br /> Diesel Hydrocarbons (C9-C24) by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 9K16006: Prepared 16-Nov-99 Using EPA 3510B <br /> Blank(9K16006-BLK1) <br />'—Diesel'Range Hydrocarbons ND 50—UF)l <br /> Surrogate:tt-Pentacosane 18.3 33.3 55.0 50-150 <br /> LCS (9Kl6006-)BSI) <br /> Diesel Range Hydrocarbons 402 50 ug/l 500 80.4 60-140 <br /> Surrogate:t)-Pentacosane 21.7 33.3 65.2 50.150 <br /> LCS Dup (9K16006-BSD1) <br /> Diesei Range Hydrocarbons 377 50 ug/1 500 75.4 60-140 6.42 50 <br /> Surrogate:n-Penracosane 22.0 33.3 661 50-150 <br /> Sequoia Analytical - Walnut Creek 7We resirlts in this report apply to the samples analysed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in i is entirety. <br />�� <br /> Julianne Fegley, roject anager page 7 of 8 <br />