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404 N Wiget Lane <br /> Sequoia WaEnut Creek c94598 <br /> (925)988 8-9600 <br /> FAX(925)988-9673 <br /> a- Analytical www sequoialabs corn <br /> Gettler Ryan,lite, -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco# 11192 Reported <br /> Dublin CA,94568 Project Manager Doug Lee 10-May-01 11 24 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analyte Result Lunit Units Dilution Batch Prepared Analyzed Method Note- <br /> 13-4-10(W104569-07)Soil Sampled 24-Apr-01 00 00 Received 26-Apr-01 16 00 <br /> Purgeable Hydrocarbons ND 1 0 mg/kg 20 1D27011 27-Apr-Ol 28-Apr-01 EPA 8015/8020 <br /> Benzene ND 00050 <br /> Toluene ND 00050 <br /> Ethylbenzene ND 00050 <br /> Xylenes(total) ND 00050 <br /> Methyl tert-butyl ether ND 0 050 CC-3 <br /> Surrogate a a a-Trifluorotoluene 112% 40-140 <br /> 134-16(W104569-08)Soil Sampled 24-Apr-01 00 00 Received 26-Apr-01 16 00 <br /> Purgeable Hydrocarbons ND 1 0 mg/kg 20 1D27011 27-Apr-01 28-Apr-Ol EPA 8015/8020 <br /> Benzene ND 00050 " <br /> Toluene ND 00050 " <br /> Ethylbenzene ND 00050 " <br /> enes(total) ND 00050 <br /> Igpthyl tert-butyl ether ND 0 050 CC 3 <br /> Surrogate a,a,a-TriJluorotoluene 108% 40-140 <br /> B-5-10(W104569-09)Soil Sampled 25-Apr-0100 00 Received 26-Apr-01 16 00 <br />—Purgeable-Hydrocarbons ND 1-0—mg/kg 20 1D27011-27-Apr-01-28-Apr-01—EPA 801518020 <br /> Benzene ND 00050 " <br /> Toluene ND 00050 " <br /> Ethylbenzene ND 00050 " <br /> Xylenes(total) ND 00050 " <br /> Methyl tert-butyl ether ND 0 050 CC 3 <br /> Surrogate a,a,a-Tnfluorotoluene 108 % 40-140 <br /> uoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 4 of 12 <br />