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Road <br /> Sequoia 1551 nCarlos, <br /> CA 94070 <br /> San <br /> Carlos,CA 94070 <br /> vow Analytical FAX(650)232 9600 <br /> (650)232-9612 <br /> F www sequolalabs com <br /> Gen]er-Ryan/Geostrategtes(1) Project Unocal(4) L208029 <br /> 6747 Sierra Court. Suite J Project Number Fourier Unocal#2859 Stockton Reported <br /> Dublin CA 94568 Project Manager Deanna Harding 08/28/02 1123 <br /> Total Purgeable Hydrocarbons,(C6-CIO) by EPA 8015B modified, BTEXM by EPA 8021B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analvie Result Limit Units Dilution Batch Prepared Analvzed Method Notes <br /> ]%4W-13(L208029-13)Water Sampled 08/10/02 10 30 Received 08/11/02 11 30 r <br /> Gasoline Range Organics(C6-C10) ND 50 ug/I 1 2H22004 08/22/02 08/23/02 , 8015Bm/8021B _ <br /> Benzene ND 050 ^ <br /> Toluene ND 050 " ^ <br /> £thvibenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 <br /> Surrogate a a a-Trifluorotoluene 903% 70-130 " <br /> MW-14 (L208029-14) %Alater Sampled 08/10/02 11 23 Received 08/91/02 11 30 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/I 1 2H23003 08/23/02 08/23/02 8015Bm/8021B <br /> Benzene ND 050 " ^ <br /> Toluene ND 050 " ^ <br /> Ethylbenzene - - _ ND 050 <br /> Xylenes(total) ND 050 " ^ <br /> Methyl tert-butyl ether ND 2 5 ^ <br /> Surrogate a a a-Trrfluorotoluene 863% 70430 " <br /> MW-15(L208029-15)Water_ Sampled 08/10/02 12 50 Received 08/11/02 11 30 _ <br /> Gasoline Range Organics(C6-C10) 57 50 ug/l 1 2H22004 08/22/02 08/23/02 8015Bm18021B HC-21 <br /> Benzene ND 0 50 " ~ <br /> Toluene 2.3 050 " ^ <br /> Ethylbenzene 5.3 0-50 " ^ <br />_Xylenes(total) 5 6 050 " <br /> Methyl tert-butyl ether 2 8 2 5 <br /> --Surrogate a,o,a-Trifluorotoluene-.~_ - _ _—__—_— -906%_= <br /> Sequoia Analytical - San Carlos The results in this report apply to the samples onaly ed in accordance with the chain o <br /> custody document Unless otherivise stated results are reported on a wet weight basis <br /> This onalyiical report must be reproduced in its entirety <br /> Page 1 I of 25 <br />