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404 N W1get Lane <br /> Walnut Creek CA 94598 <br /> 4 Sequoia (925)988-9600 <br /> FAX(925)988-9673 <br /> a- ) <br /> Analytical wwwsecluolalabs corn <br /> er Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#5886 Reported <br /> Dubhn CA,94568 Project Manager Deanna L Harding 28-Feb-Ol 07 25 <br /> Total Purgeable Hydrocarbons (C&C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analyte Result Lunt Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-6S(W102175-10)Water Sampled 06-Feb-01 12 40 Received 07-Feb-01 16 40 <br /> Purgeable Hydrocarbons ND 500 ug/1 1 1B15002 15-Feb-01 15-Feb-01 DHS LUFT <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether 546 2 50 " <br /> Surrogate a a a-Trrfluorotoluene 980% 70-130 <br /> MW-7D(W102175-11)Water Sampled 06-Feb-01 09 58 Received 07-Feb-01 16 40 <br /> Purgeable Hydrocarbons ND 500 ug/l 1 1B15002 15-Feb-01 15-Feb-01 DHS LUFT <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl Cert-butyl ether ND 2 50 " <br /> gate a,a,a-Trrfluorotoluene 100% 70-130 " <br /> MW-7S(W102175-12)Water Sampled 06-Feb-01 09 18 Received 07-Feb-01 16 40 <br /> Purgeable Hydrocarbons ND 500 ug/I 1 1B15002 15-Feb-01 15 Feb-01 DHS LUFT <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 2 50 <br /> Surrogate a,a,a-Tnfluorotoluene 990% 70-130 " <br /> Sequoia Analytical-Walnut Creek The results to this report apply to the samples analyzed in accordance with the chain of <br /> • custody document Thrs analytical report must be reproduced in its entirety <br /> Page 12 of 29 <br /> t� <br />