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Sequoia 1551 industrial Road <br /> San Carlos CA 94070 <br /> iljCpt Analytical (650)232-9600 <br /> FAX(650)232-9612 <br /> WWW sequoLalabs com <br /> Gettler-Ryan/Geostrategtes(1) Project Unocal(4) <br /> Sterna Court, suite J Project Number Former Unocal#5098, Stockton <br /> m CA,94568 Reported <br /> Project Manager Deanna Harding 07/01/02 07 46 <br /> TentativeIy Identified Compounds by GC/MS <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit units Dilution Batch Prepared Analyzed Method Notes <br /> -245 L206021-31 Water Sam led 06/09/02 15 35 Received 06/11/02 18 05 <br /> 2-Methyl butane 55 50 ug/1 5 2060030 06/19/02 06/19/02 EPA 8260E <br /> tlohexane 40 5 0 11 111 <br /> clopentane 37 5 0 ^ " 1.penyl benzene 34 5 0 It <br /> " It 1. „ <br /> Unknown 71 5 0 <br /> -24D L206021-32 Water Sam led 06/09/02 14 45 Received 06/11/02 18 05 <br /> TICS found ND 1 0 ugA 1 2060032 06/20/02 06/20/02 EPA 8260B <br /> 25S L206021-33I Water Sam pied 06/11/02 09 50 Received 06/11/02 18 05 <br /> 11 TICs found ND 10 ug/l 1 2060034 06/21/02 06/21/02 EPA 8260B <br /> MW-25D L206021-34 Water Sampled 06/11/02 10 30 Received 06/11/02 18 05 <br /> 9ane 1200 50 ug/1 50 2060034 06/24/02 06/24/02 EPA 8260B <br /> lohexane 470 50 <br /> yclopentane 870 50 <br /> enyl Propenedtyl Benzene 760 50 <br /> methyl benzene 1400 50 „ + <br /> ethyl benzene isomer 720 50 ” <br /> Yle butane 2400 50 <br /> hyl cyclopentane 1400 50 ^ „ <br /> hyl ethyl benzene 740 50 ^ „ <br /> v1W-AS26 L206021-35 Water Sampled 06/11/02 11 20 Received 06/11/02 18 05 <br /> Wanone 68 1 0 ug/l 1 2060034 06/21/02 06/2I/02 EPA 8260B <br /> ethyl hexane 1.3 1 0 ^ „ <br /> bmethyl pentane 12 10 ^ „ <br /> Ishydrofuran 170 1 0 <br /> amethyl Butane 20 10 <br /> nown 36 1 0 <br />,quota AnalyticaI-San Carlos The results in this report apply to the samples analyzed in accordance ivuh the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> 1 <br /> Page 9 of 103 <br />