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404 N WISet Lane <br /> Sequoia Walnut Creek.CA 94598 <br /> ( 4 (925)988-9600 <br /> FAX(925)988-9673 <br /> � Analytical <br /> titer Ryan,Inc -Dublin Project Unocal <br /> 747 Sierra Court Suite I Project Number Unocal# 5886 Reported <br /> Dublui CA,94568 Project Manager Deanna L Harding 17-Mar-00 09 54 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical-Walnut Creek <br /> Reportmg <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-6S(WO03053-12RE1)Water Sampled 28-Feb-0013 11 Recewed 01-Mar-0018 15 <br /> Methyl tert butyl ether 2100 250 ug4 100 0006003 06-Mar-00 07-Mar-00 EPA <br /> 8015WS020 <br /> Surrogate a,a,a-Tnfluorotoluene 100% 70-130 " <br /> MW-8S(WO03053-13)Water Sampled 29-Feb-0011 31 Received 01-Mar-00 18 15 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 0006003 06-Mar-00 06-Mar-00 EPA <br /> 8015MI8020 <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 ^ " <br /> Xylenes(total) ND 050 " <br /> Methyl tert butyl ether ND 25 " <br /> Surrogate a,a,a-Tnfluorotoluene 973% 70-130 " <br /> MW-81(WO03053-14)Water Sampled 29-Feb-0012 11 Received 01-Mar-00 18.15 <br /> Purgeable Hydrocarbons ND 50 ugll 1 0006003 06-Mer-00 06-Mar-00 EPA <br /> 8015MM20 <br /> *nzene ND 050 ^ ^ <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Methyl tent-butyl ether ND 25 " <br /> Surrogate a,a,a-Tnfluorotoluene a 950% 70-130 <br /> MW-8D(W003053-15)Water Sampled 29-Feb-001256 Received 01-Mar-0018 15 <br /> Purgeable Hydrocarbons ND 50 ugA 1 0006003 06-Mar-00 06-Mar-00 EPA <br /> 8015M=20 <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 <br /> Surrogate a,a,a-Trifluorotoluene 967% 70-130 <br /> Sequoia An*fical-Walnut Creek The results in this report only to the samples wimtned in accordance with rhe chain of <br /> custody document Tins analytical report mast be reproduced in its entirety <br /> Page 6 of 27 <br />