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Inl Road <br /> Sequoia Sananarlosos CA CCA 94070 <br /> Analytical (650)232-9600 <br /> FAX(650)232-9612 <br /> www sequoialabs coin <br /> leer-Ryan/Geostrategies(1) Project Tosco(l) <br /> Sierra Court,Suite J Project Number Tosco#5886,Stockton,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 12/06/01 16 51 <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 /> MW-5D(L111140-07)Water Sampled 11/20/010822 Received 11/20/01 19 00 _ <br /> Purgeable Hydrocarbons as Gasoline ND 50 ugll 1 1120003 12/03/01 12/03/01 EPA 80211 .� <br /> Benzene ND 050 <br /> Toluene ND 050 ^ <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 50 <br /> Surrogate a,a,a-Trifluorotoluene 791 % 70-130 " <br /> MW-5S(L111140-08)Water Sampled 11/20/010752 Received 11/20/01 19 00 <br /> Purgeable Hydrocarbons as Gasoline ND 50 USA I 1120003 12/03/01 12/03/01 EPA 8021B <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 ^ <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tent-butyl ether ND 5 0 <br /> ate a,a,a-Tr:fluorotoluene 787% 70-130 " <br /> -6D(L111140-09)Water_ Sampled 11/20/01 10 20 Received_11/20/01 19 00 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l _ 1 1120002 12/03/01 12/03/01 EPA 8021B <br /> Benzene ND 050 n <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " " <br /> Xylenes(total) ND 050 " <br /> Methyl tart-butyl ether 7 2 5 0 <br /> Surrogate a,a,a-Trtfluorololuene 841 % 70-130 " <br /> So is Analytical -San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 4 of 23 <br />