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1551 <br /> Road <br /> Sequoia 3nCaTI S,CAl4070 <br /> San Carlos,CA 94070 <br /> 9600 <br /> a- )w Analytical FAX(650)232(650)231-96129612 <br /> www sequoialabs coin <br /> Gettler-Ryan/Geostrategtes(1) Project Unoca](4) - L20802!1:23 6747 Sierra Court_ Suite l Project Number Former Unocal#12859 Stockton Reporte <br /> Dublin CA 94568 Praject Manager Deanna Harding 08/28/02 1 <br /> Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified, BTEXM by EPA 8021B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analvie Result Lunt Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1 (L208029-01)Water Sampled 08/10/02 08 45 Received 08/11/02 11 30 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l I _ 2H22004 08/22/02 08/22/02 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-Trifluorotoluene 922% 70-130 " <br /> MW-2(L208029-02)Water Sampled 08/10/02 14 15 Received 08/11/02 11.30 T _ <br /> Gasoline Range Organics(C6-C10) 45000 5000 ug/l 100 21-323003 08/23/02 08/23/02 8015Bm/8021B HC-21 <br /> Benzene <br /> 2500 50 " <br /> " <br /> Toluene 6300 50 ^ <br /> Ethylbenzene' 3400 - 50 " <br /> Xylenes(total) 9700 50 " <br /> Methyl tert-butyl ether ND 250 ^ " <br /> Surrogate a a,a-Triuorotoluene 101 % 70-130 <br /> MW-3(L208029-03)Water Sampled 08/10/0209 15 Received 08/11/02 11 30 ---� <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l 1 2H22004 08/22/02 08/22/02 8015Bm/8021B <br /> Benzene ND 0-110 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 0 50 ^ " <br />__,_Xylenes(total) ND 050 ^ <br /> Methyl tert-butyl ether ND 25 ^ ^ <br /> Surrogate a,a,a-TrifluororolueneY=-- —90 4% — --70-130=--- <br /> Sequoia Analytical- San Carlos The results in this report apply to the samples analyed in accordance with the chain <br /> custody document Unless otherwise stated results are reported on a wet weight basts <br /> This analytical report must he reproduced in its entirety <br /> Page 7 of 25 <br />