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i <br /> Sequoia San an nal Road <br /> Carloslos 9 <br /> (65(i)23 232-95%00W <br /> FAX <br /> 12 <br /> Analytical wwseq 0ialabs M <br /> wwwsequoialabsco�li e <br /> Gettler-Ryan/Geostrategies(1) Project Tosco(1) <br /> 6747 Sierra Court, Suite] Project Number Unocal SS#08671,Stockton,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 12/06/01 15 09 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEX/MTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB(L111141-01)Water Sampled 11/20/010000 Received 11120/01 19 50 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ugA 1 1120002 12/03/01 12/04/01 EPA 8021B <br /> Benzene ND 050 " <br /> Toluene ND—O 50T -" <br /> Ethyibenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 50 " <br /> Surrogate a,a,a-Trifluorotoluene 941 % 70-130 " <br /> MW-I (L111141-02)Water Sampled 11/20/011510 Received 11/20/01 19 50 _ <br /> Purgeable Hydrocarbons as Gasoline ND 50 ugIl 1 1120003 12/03/01 12/04/01 EPA 8021B <br /> Benzene ND 050 n n n w n n <br /> Toluene 078 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) 092 050 <br /> Methyl tert-butyl ether 340 50 s " <br /> Surrogate a,a,a-Trifluorotoluene 104% 70-130 •' <br /> MW-2(L111141-03)Water Sampled 11/20/011405 Received 11/20/01 19.50 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l 1 1120003 12/03/01 12/04/01 EPA 802 IB <br /> Benzene ND 0 50 <br /> Toluene--___ _0.55 050 <br /> TEthylbenzene ND 050 <br /> Xylenes(total) - - — --- ND -----0 50 — ---- --- n — "- --- " ---- -- ---- - - <br /> Methyl tent-butyl ether 72 5 0 " <br /> --Surrogate a,a,a-Trifluorotoluene---= — ----- -109% <br /> Sequoia Analytical- San Carlos The results to this report apply to the samples analyzed m accordance with the chain <br /> custody document This analytical report must be reproduced in its entirety <br /> , <br /> Page 2 of 10 <br />