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885 Jarvis Dr <br /> 4D Sequoia Morgan Hill,CA 95037 <br /> (408)776-9600 <br /> Analytical FAX(409)782-6308 <br /> www sequoialabs can <br /> URS Corporation[I] Project BP Heritage Site#11194,Tracy,CA MM30060 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number BP Heritage Site#11194,Tracy,CA Reported <br /> Sacramento CA,95833 Protect 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 /> MW-1 MMB0060-0 Water Sampled 01/30/03 11 00 Received 02/01/03 09 15 <br /> Methyl tert-butyl ether ND 050 ug/l 1 3B 13026 02/13/03 02/13/03 EPA 8260E <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) 054 050 <br /> Gasoline Range Organics(C6-C10) ND 50 " <br /> Surrogate 1 2-Dtchloroethane-d4 107% 78-129 <br /> MW-2 MMB0060-08 Water Sampled 01/30/03 15 15 Received 02/01/03 09 15 <br /> Methyl tert-butyl ether 79 050 ug/1 I 3B13026 02/13/03 02/13/03 EPA 8260E <br /> Benzene 096 0 50 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Gasoline Range Organics(C6-C10) 150 50 <br /> rrogate 1,2-Dtchloroethane-d4 115% 78-129 ~ <br /> MW-3 MMB0060-09 Water Sampled 01/30/03 13 35 Received 02/01/03 09 15 <br /> Methyl tert-butyl ether 15 0 50 ugA I 3B13026 02/13/03 02/13/03 EPA 8260B <br /> Benzene ND 0 50 ^ <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 108% 78-129 " <br /> �equota Analytical-Morgan Hill 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 /> 5 of 11 <br />