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n , <br /> 404 N Wiget Lane <br /> Sequoia Walnut Creek.CA 94598 <br /> (925)988-9600 <br /> i( N Analytical FAX(925)988-9673 <br /> ( er Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco(Unocal)4 6981 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 23-Nov-99 16 42 <br /> Total Purgeable Hydrocarbons (C6-Cl2), BTEX and MTBE by DHS LUFT <br /> Sequoia Analybcal -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB(W910568-01)Water Sampled 25-Oct-99 00 00 Received 27-Oct-99 13 50 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 9KO5001 05-Nov-99 05-Nov-99 EPA <br /> Benzene ND 050 " 8015M/8020 <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-Trifluorotoluene 867% 70-130 " <br /> MW-1 (W9105684)2)Water Sampled 26-Oct-99 09 55 Received 27-Oct-99 13 50 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 9KO5001 05-Nov-99 05-Nov-99 EPA <br /> Benzene ND 050 " " 8015M18020 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes (total) 076 050 " <br /> MudAL tert-butyl ether 51 25 " <br /> Sur ate a a a-Tri�hiorotuluene 833 % 70-130 " <br /> MW-2(W910568-03)Water Sampled 26-Oct-99 17 40 Received 27-Oct-99 13 50 P-01 <br /> Purgeable Hydrocarbons 710 500 ugll 10 9KO8001 08-Nov-99 09-\ov-99 EPA <br /> Benzene 120 50 8015M/8020 <br /> Toluene 21 50 " <br /> Ethylbenzene 60 50 " <br /> Xylence (total) 29 50 " <br /> Methyl ttrt-butyl ether 240 25 " <br /> Surrogate a a a-Ttifluorotoluene 100% 70-130 " <br /> $W Analytical -Walnut Creek The resrilts in Iles report apply to the samples analyzed i n accordance with the chain of <br /> custody document This analyhcal report must be reproduced in its entirety <br /> T <br /> w 1e eg ey, roject g Page 2 of 19 <br />