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hid <br /> Sequoia 1551 rlors A Road <br /> a_ _� <br /> San Carlos CA 94070 <br /> (650)232-9600 <br /> Analytical FAX(650)232-9612 <br /> www sequoialabs com <br /> tiler-Ryan/Geostrategies(l) Project Unocal(4) L208033 <br /> 7 Sierra Court,Suite) Project Number Farmer Unocal 40187,Stockton Reported <br /> Dublin CA 94568 Project Manager Deanna Harding 08/29/02 07 10 <br /> Total Purgeable Hydrocarbons (C6-00) by EPA 8015B modified, BTEXM by EPA 8021B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-2-22 (L208033-31)Water Sampled 08/14/020955 Received 08/14/02 19_55 <br /> Gasoline Range Organics(C6-C]0) ND 50 ug/1 1 2H21004 --08121102 08/21/02 8015Bm/8021B <br /> Benzene ND 050 <br /> Toluene 11 050 <br /> Ethylbenzene ND 050 " ^ <br /> Xylenes(total) 0 71 050 <br /> Methyl tent-butyl ether ND 2 5 " .. <br /> Surrogate a,a,a-Trifluorotoluene 122% 70-130 <br /> NP-2-60(L208033-32)Water Sampled _08/14102 ]0 30 Received 08/14/02 1_9 55 <br /> Gasoline Range Organics(C6-CIO) 7400 5000 ug/I 100 2H21003 08/21/02 08/21/02 8015Bm/802IR HC-12 <br /> Benzene 3500 50 <br /> Toluene 100 50 " ^ <br /> Ethylbenzene ND 50 <br /> Xylenes(total) 140 50 ^ " <br /> Methyl test-butyl ether 490 250 <br /> rogJ6(L208033-33)Woter <br /> aie a a a-Triuorotoluene 127% 70-130 <br /> Sampled 08/14/020920 Received 08/14/021955 <br /> Gasoline Range Organics(C6-CIO) 220 50 ug/I 1 2H21003 08/21/02 08/21/02 8015Bm/8021B HC-12 <br /> Benzene I7 050 <br /> Toluene 20 0 50 " ^ <br /> Ethylbenzene ND 050 " ^ <br /> Xylenes(total) 1 1 050 ^ " <br /> Methyl tert-butyl ether 92 25 <br /> Surrogate a,a,o-Triuorotoluene 122% 70-130 " •• <br /> o <br /> ta Analytical -San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 22 of 36 <br />