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885 Jams Dr <br /> 4D Sequoia Mcrptn Hill,CA 95037 <br /> (408)776-9600 <br /> Analytical FAX(408)782-6308 <br /> www sequotalabs can <br /> URS Corporation[1) Project BP Heritage Site 411194,Tracy,CA MMB0060 <br /> 4�-- <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number BP Heritage Site#11194,Tracy,CA Reported <br /> Sacramento CA,95833 Project Manager Vern Elarth 03/07/03 08 04 <br /> Total Purgeable Hydrocarbons (C6-C10) and Volatile Organic Compounds by EPA method 8260B <br /> Sequoia Analytical-Morgan Hill <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> AMW-1 (MMB0060-01)Water Sampled 01/30/03 13 10 Received 02/01/03 09 15 <br /> Methyl tert-butyl ether ND 050 ug/l 1 3B13026 02/13/03 02/13/03 EPA 8260B <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C6-C10) ND 50 " <br /> Surrogate 1 2-Dtchloroethane-d4 110% 78-129 " <br /> AMW-2(MMB0060-02)Water Sampled 01/30/03 12 50 Received 02/01/03 09 15 <br /> Methyl tert-butyl ether ND 050 ug/l I 3B13026 02/13/03 02/13/03 EPA 8260B <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C6-C10) ND 50 " <br /> rrogate 12-Dtchloroethane-d4 112% 78-129 <br /> AMW-3(MMB0060-03)Water Sampled 01/30/03 12 35 Received 02/01/03 09 15 <br /> Methyl tert-butyl ether 41 050 ug/1 1 3B13026 02/13/03 02/13/03 EPA 8260B <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Gasoline Range Organics(C6-C10) ND 50 " <br /> Surrogate 1 2-Dtchloroethane-d4 114% 78-129 " <br /> equoia Analytical-Morgan Hill The results to 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 /> 77tts analytical report must be reproduced in its entirety <br /> 3 of 11 <br />