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Sequoia 1551 Industrial Road <br /> San Carlos CA 94070 <br /> r (650)232-9600 <br /> Analytical <br /> FAX(650)232-9612 <br /> www sequoialabs cam <br /> iin <br /> er-Ryan/Geostrategies(1) Project Unocal(4) <br /> Sierra Court, Suite J Project Number Former Unocal#5098,Stockton Reported CA,94568 Project Manager Deanna Harding 07101/02 07 46 <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 /> -7 L206021-08 Water Sampled 06/10/02 15 31 Received 06111/02 18 05 <br /> No T1Cs found ND 1 0 ug/1 1 2060032 06/20/02 06/21/02 EPA 8260B <br /> -SD L206021-09 Water Sampled 06/10/021725 Received 06/11/02 18 05 <br /> etone 240 25 ugA 25 2060034 06/24/02 06/24/02 EPA 8260B <br /> Cyclohexane 46 2 5 <br /> lydro-IH-Indene 75 2 5 <br /> ydro-methyi-IH-Indene 47 2 5 <br /> yl methyl benzene 87 2 5 " <br /> Etbyl methyl benzene isomer 67 2 g ^ „ <br /> Ithyl cyclohexane 58 2 5 <br /> thyi cyclopentane 81 2 5 <br /> Methyl pentane 31 2 5 „ <br />&-9(L206021-10)Water Sampled 06/10/020956 Received 06111/021805 <br /> IN TICS found ND 1 0 ugA l 2060034 06/21/02 06/21/02 EPA 8260B <br /> MYV-10 L206021-11 Water Sampled 06/10/02 11 35 Received 06/11/02 I8 05 <br /> 4 1 butane ND 1 0 ugll 1 2060032 06/20/02 06/21/02 EPA 8260B' <br /> found ND 10 " „ 11 „ <br /> -JOA L206021-12 Water Sam led 06/10/02 12 00 Received 06/11/02 18 05 <br /> TICS found ND 10 ug/l 1 2060032 06/20/02 06/21/02 EPA 8260B <br />%IW-11 L206021-13 Water Sampled 06/11/02 10 55 Received 06111/02 18 05 <br /> lohexane 650 100 ugA 104 2060034 06/24/02 06/24/02 EPA 8260B <br /> lopentane 890 100 11 „ „ <br /> ethyl butane 1200 100 <br /> hyl cyclopentane 1100 100 ” <br /> hylmethylene cyclopropane 780 100 <br /> tene 610 100 <br /> i <br /> equo a Analytical-San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 5 of 103 <br />