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404 N Wiget Lane <br /> Sequoia Walnut Geek, 9 94598 <br /> 4 (925)9W9600 <br /> FAX(925)988-9673 <br /> �(D_ Analytical %vwwseq"°la]Wbswrn <br /> tiler Ryan,Inc -Dublin Project Chevron <br /> 747 Sierra Court Suite J Project Number Chevron#9-2033 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 29-Jun-00 16 29 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical -Walnut Creek <br /> Reportuig <br /> Analyte Result Lunn Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB(W006011-01)Water Sampled 31-May-0000 00 Received 01-Jun-00 12 51 <br /> Purgeable Hydrocarbons ND 50 ug/I 1 OF09003 09-Jun-00 09-Jun-00 EPA <br /> 8015M/8020 <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert butyl ether ND 25 <br /> Surrogate a,a,a-Trtfluorotoluene 104 % 70-130 11 11 " <br /> lo <br /> MW-1(W006011-02)Water Sampled 31-May-00 11 40 Received 01-Jun-00 12 51 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 OF12006 09-Jun-00 09-Jun-00 EPA <br /> 8015M/8020 <br /> Benzene ND 0 50 <br /> Toluene ND 0 50 <br /> Ethylbenzene ND 050 <br /> X leases(total) ND 0 50 " <br /> thyl tent- butyl ether 220 2 5 " <br /> urrogate a,a,a-Trtfluorotoluene 102 % 70-130 " <br /> MW-2(W006011-03)Water Sampled 31-May-00 10 50 Received 01-Jun-00 12 51 <br /> Purgeable Hydrocarbons ND 50 Ul;4 1 OF09003 09-Jun-00 09-Jun-00 EPA <br /> 8015M/8020 <br /> Benzene ND 050 n n n n n n <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 0 50 " <br /> Methyl text-butyl ether ND 25 ^ " <br /> Surrogate a,a,a-Trtfluorotoluene 112% 70-130 <br /> Sequoia Analytical-Walnut Creek The results in thrs report apply to the samples analysed to accordance with the chain of <br /> custody document This analytical report must be reproduced to its entirety <br /> Page 2 of 21 <br />