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885 Jarvis Dr <br /> Sequoia Mcrpn HIR,CA 95037 <br /> M (408)776-9600 <br /> Analytical FAX(408)782-6308 <br /> www saquotalabs can <br /> URS Corporation[II Project BP Hentage Site#11194,Tracy,CA MLK0111 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number BP Heritage Site#11194,Tracy,CA Reported <br /> Sacramento CA,95833 Project Manager Vern Elarth 11/24/02 14 29 <br /> Total Purgeable Hydrocarbons (C6-C10) by EPA 8015B modified, BTEXM by EPA 8021B <br /> Sequoia Analytical -Morgan Hill <br /> Reporting <br /> Analyte Result Lnmt Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-4(MLK0111-10)Water Sampled 10/31/02 14 45 Received 11/01/02 12 50 <br /> Gasoline Range Organics(C6-CIO) 1900 100 ug/I 2 2K14001 11/14/02 11/14/02 801513tn/802113 HC-12 <br /> Benzene 4 2 1 0 " <br /> Toluene 3 6 1 0 " <br /> Ethylbenzene 76 1 0 " <br /> Xylenes(total) 10 1 0 " <br /> Methyl tert-butyl ether 10 5 0 " <br /> Surrogate a,a a-Trifluorotoluene 930% 55-142 " <br /> MW-5(MLK0111-11)Water Sampled 10/31/02 14 05 Received 11/01/02 12 50 <br /> Gasoline Range Organics(C6-C10) 81 50 ugll 1 2K1400I 11/14/02 11/14/02 8015Bm/8021B HC-21 <br /> Benzene 1 7 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether 13 2 5 " <br /> urrogate a a a-Trtfluorotoluene 117% 55-142 " <br /> MW-6(MLK0111-12)Water Sampled 10/31/02 15 40 Received 11/01/02 12 50 <br /> Gasoline Range Organics(C6-C10) 44000 10000 ug/I 200 2K14001 11/14/02 11/14/02 8015Bm/8021B HC-21 <br /> Benzene 270 I00 " <br /> Toluene 1200 100 " <br /> Ethylbenzene 510 100 <br /> Xylenes(total) 2100 100 " <br /> Methyl tert-butyl ether 1800 500 " <br /> Surrogate a aa-Trtfluorotoluene I11 % 55-142 " <br /> �equola 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 to its entirety <br /> 6of10 <br />