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404 N Wiget Lane <br /> Sequoia Walnut Creek CA 94598 <br /> 4 (925)988-9600 <br /> ,-!D— <br /> , Analytical FAX (925)988-9673 <br /> WerAnk <br /> Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco 4 6981 Reported <br /> Dublin CA,94568 Project Manager Mike Mttchener 08-Sep-99 14 55 <br /> Total Purgeable Hydrocarbons (C6-02), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analyte Result Luna Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB(W908479-01)Water Sampled 21-Aug-99 00 00 Received 24-Aug-99 16 20 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 9I02006 01 Sep 99 01-Sep-99 DHS LUFT <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a a a-Trrfluorotohaene 100 % 70-130 <br /> MW-14 (W908479-02)Water Sampled 21-Aug-99 12 55 Received 24-Aug-99 16 20 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 9I02006 01 Sep 99 01-Sep-99 DHS LUFT <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> &I tert-butyl ether 110 25 " <br /> ate a a a-Trifluorotoluene 933% 70-130 <br /> MW-15 (W908479-03)Water Sampled 21-Aug-99 12 10 Recened 24-Aug-99 16 20 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 9102006 01 Sep-99 01-Sep-99 DHS LUFT <br /> Benzene ND 050 " <br /> I oluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a a a-Tnfluorotolirene 967% 70-130 <br /> S6ota Analytical-Walnut Creek The results in tins report apply to the smnples analyzed in accord-mce with the chain of <br /> custody document This analytical report must be reproducedin its entirety <br /> C, <br /> atk'A� L�_4 _44(k Q9—1 <br /> u e egley, Project Ma ger/ Page 2 of 8 <br />