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Sequoia anC-11dustn 40 0 <br /> San Carlos CA 9g07D, <br /> Analytical (650)232 9600 <br /> FAX(650)232 4612 <br /> www sequoialabs corn, <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court,Suite] Project Number Former Unocal#5098 & Montgmery Ward Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 03/26/02 12 44 ' <br /> Tentatively Identified Compounds by GC/MS <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte - Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-25D (L203015-34)_Water Sam led 03/04/02 12 15 Received 03/05/02 18 25 <br /> 2-Butanone 59000 170 ugA 1667 2030023 03/14/02 03/14/02 EPA 8260B <br /> butane 1600 - 170 " „ <br /> Cyclohexane 400 170 <br /> Dimethyl Cyclopropane 260 170 <br /> Ethenyl Propanediyl Benzene 540 170 <br /> Ethyl Meth)I Benzene 450 170 <br /> Methyl butane 3100 170 " <br /> Methyl Pentane 330 170 <br /> Tetrahydrofuran 8400 170 „ <br /> MW-AS26(L203015-35)Water Sam led 03/04/02 13 00 Received 03/05/02 18 25 <br /> 2-Butanone 76000 50 ug/l 50 2030023 03/14/02 03/15/02 EPA 826013 <br /> Tetrahydrofuran 10000 50 <br /> Unknown 72 50 <br /> MW-27 L203015-36 Water Sampled 03/05/02 08 58 Received 03/05/02 18 25 <br /> No TICS found ND 10 ug/1 1 2030017 03/08/02 03/12/02 EPA 82601 <br /> Sequoia Analytical -San Carlos The results in this i epoi t apply to the samples analyzed in accoi dance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 15 of 91 , <br />