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404 N Wiget Lane <br /> Sequoi r� Walnut Creek C 94598 <br /> 6.� (925)988 8-9600 1" <br /> FAX(925)988-9673 <br /> Analyticalwww sequoialabs com <br /> rertler Ryan Inc - 17uhlin Project Tosca <br /> 6747 Sierra Court Suite J Project Number Tosco# 1 1 192 Reported <br /> Dublin CA,94568 Project Manager Doug Lee 24-Aug-01 09 09 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-9-13 5(W108160-06)Soil Sampled 09-Aug-01 00 00 Received 09-Aug-01 17 50 <br /> Purgeable Hydrocarbons ND 1 0 mg/kg 20 1H17004 10-Aug 01 17-Aug-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(MTBE) ND 0 050 Q-23 <br /> Surrogate a a a-Triuorotoluene _ 843 % 40-140 <br /> MW-10-9 5(W108160-08)Soil Sampled 09-Aug-01 00 00 Received 09-Aug-01 17 50 <br /> Purgeable Hydrocarbons ND 1 0 mg/kg 20 1H17004 10-Aug-01 17-Aug--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(MTBE) ND 0050 <br /> Surrogate a a a-Trtfluorotoluene 873 % 40-140 " <br /> MW-11-9(W108160-11)Soil Sampled 08-Aug-01 00 00 Received 09-Aug-01 17 50 <br /> Purgeable Hydrocarbons ND 1 0 mglkg 20 1H17004 10-Aug-01 17-Aug-01 EPA 801518020 <br /> Benzene ND 00050 <br /> Toluene ND 00050 <br /> Ethylbenzene ND 00050 <br /> Xylenes(total) ND 00050 <br /> Methyl Cert-butyl ether(MTBE) ND 0 050 Q-23a <br /> Surrogate a a a-Trifluorotoluene 910% 40-140 " <br /> AM <br /> Sequoia Analytical - Walnut Creek The results in this report apply to the samples analyzed in accordance wilh the c J <br /> custody document This analytical report niusl be reproduced to its entirety <br /> Page 3 of 11 <br />