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I <br /> Sequoia 404 N Wiget Lane <br /> Walnut Creek CA 94598 <br /> (925) 988-9600 <br /> Analytical FAX(925)988-9673 <br /> www sequolalabs corn <br /> ryettler Ryan,Inc -Dublin Project Tosco <br /> { 6747 Sierra Court Suite J Project Number Tosco# 11193 Reported <br /> Dublin CA,94568 Project Manager Doug Lee <br /> 0141111-01 18 14 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analytep Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> B MW-8 (W105543-04)Water Sampled 24-May-01 00 00 Received 24-May-01 17 20 <br /> Purgeable Hydrocarbons ND 50 ugll 1 1E31003 31-May-01 31-May-01 EPA <br /> N <br /> B, Benzene ND 050 „ „ 8015M/8020 <br /> T, Toluene ND 050 „ <br /> Er Ethylbenzene ND 050 <br /> X Xylenes(total) ND 050 , <br /> Methyl tert-butyl ether ND 25 „ <br /> Surrogate a,a,a-Trrfluorotoluene 100% 70-130 <br /> S Sequoia Analytical -Walnut Creep The results rn this report apply 10 the samples analyzed in accordance with the chrnn of <br /> cuslody document This analylical report must be reproduced in its enlirery <br /> Page 3 of 6 <br />