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.t' <br /> q • 8$5 Jarvis Dr <br /> 4D <br /> is e 110Ia Main III,EI,CA 9503737 <br /> Analytical (408)776-9600 <br /> FAX{448)7$2-6308 <br /> www sequoialabs can <br /> URS Corporation[11 Project BP Heritage Site#11191,Stockton,CA MMB0058 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number BP Heritage Site#]1191,Stockton,CA Reported <br /> Sacramento CA,95833 Project Manager Vern Elarth 03/07/03 07 50 <br /> Total Purgeable Hydrocarbons (C6-Cl0) and Volatile Organic Compounds by EPA method 8260B <br /> Sequoia Analytical -Morgan Hill <br /> Reporting <br /> Analyte Result Linut Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1 MMB0058-01 Water Sampled 01/30/03 11 10 Received 02/01/03 09 15 HT-04 <br /> Methyl tert-butyl ether 7600 120 ug/I 250 3B16004 02/16/03 02116/03 EPA 8260B <br /> Benzene ND 120 " <br /> Toluene ND 120 <br /> Ethylbenzene ND 120 " <br /> Xylenes(total) ND 120 <br /> Gasoline Range Organics(C6-C10) ND 12000 " <br /> Surrogate 1,2-Dichloroethane-d4 100% 78-129 " <br /> MW-2 MMB0058-02 Water Sampled 01/30/03 11 30 Received 02/01/03 09 15 <br /> Methyl tert-butyl ether 4900 50 ug/1 100 3B13009 02/13/03 02/13/03 EPA 8260B <br /> Benzene ND 50 " <br /> Toluene ND 50 " <br /> Ethylbenzene ND 50 " <br /> Xylenes(total) ND 50 " <br /> Gasoline Range Organics(C6-C10) 5300 5000 <br /> i <br /> • Surrogate 12-Dichloroethane-d4 968% 78-129 " <br /> MW-3(MMB0058-03)Water Sampled 01/30/03 11 50 Received 02/01/03 09 15 HT-04 <br /> Methyl tert-butyl ether 22000 500 ug/I 1400 3B 14027 02/14/03 02/15/03 EPA 8260B <br /> Benzene ND 500 " <br /> Toluene ND 500 " <br /> Ethylbenzene ND 500 " <br /> Xylenes(total) ND 500 " <br /> Gasoline Range Organics(C6-C10) ND 50000 " <br /> Surrogate 12-Dichloroethane-d4 101 % 78-129 " <br /> Sequoia 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 /> 3of10 <br />