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1551 Road <br /> Sequoia San Lariosrlos,,CAA 94070 <br /> Analytical (650) <br /> n alyti c a l (650)232-9602 <br /> FAX(650)232-9612 <br /> www sequoialabs coin <br /> r Ryan/Geostrategies(1) Project Unocai(4) L208029 <br /> sierra Court Suite J Project Number Former Unocal#2859 Stockton Reported <br /> Dublin CA 94568 Project Manager Deanna Harding 08/28/02 11 23 <br /> Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified, BTEXM by EPA 8021B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analvzed Method Notes <br /> NP-1 (L208029-22)Water Sampled 08/10/02 16 15 Received. 08/11/02 11 30 <br /> Gasoline Range Organics(C6-C10) ND 50 ugA I 2H22004 08/22/02 68/22/02 8015Bm/8021B <br /> Benzene ND 050 " <br /> Toluene 081 050 QR-04 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) 0 52 050 QR-04 <br /> Methyl tert-butyl ether ND 2 5 <br /> Surrogate a,o,a-Tri/7uorotoluene 862 % 70-130 " <br /> QA (L208029-23)Water Sampled 08/09/02 00 00 Received 08/11/02 11 30 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/I i 2H22004 08/22/02 08/22/02 8015Bm/8021B <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Etbylbenzene ND 0 50 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 2 5 " <br /> ate a,a,a-Triuorotoluene 941 % 70-130 " <br /> is Analytical - San Carlos The results" this report apply to the samples analysed in accordance ivith 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 entiret), <br /> Page 14 of 25 <br />