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Sequoia 404 , CA Lane <br /> Walnut Creek, CA 94598 <br /> (925)988-9600 <br /> FAX <br /> Analytical alabs c <br /> www sequoilabs 73 <br /> qucoin <br /> E <br /> Gettler Ryan,Itic -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 Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> B-7-15 (W104569-01)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 27-Apr-01 EPA 8015/8020 <br /> Benzene ND 00050 " " " " " CC-3 <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 950% 40-140 <br /> B-8-14 5(W104569-02)Sail Sampled 24-Apr-010000 Relelved 26 Apr-01 16 00 <br /> Purgeable Hydrocarbons ND 10 mg/kg 20 ID27011 27-Apr-01 27-Apr-01 EPA 8015/8020 <br /> Benzene ND 00050 CC-3 <br /> Toluene ND 00050 " <br /> Ethylbenzene ND 00050 " <br /> 'enes(total) ND 00050 <br /> hyl tert-butyl ether ND 0 050 " CC-3 <br /> Surrogate a a,a-Trifluorotoluene 105% 40-140 " <br /> B-1-15(W104569-03)Soil Sampled 24-Apr-Ol 00 00 Received 26-Apr-Ol 16 00 <br />—Purgeable Hydr".itbont, — - ND 1-0---mgikg-----2O--1D27011-27-Apr-01-27-Apr-OI—EPA 8015/8020---- <br /> Benzene ND 00050 CC 3 <br /> foluene ND 00050 " <br /> Ethylbenzene ND 00050 " <br /> Xylenes(total) ND 00050 " <br /> Methyl tert-butyl ether ND 0 050 CC 3 <br /> Surtogate a a a-Trifluorotoluene 112 % 40-140 " <br /> uoia Analytical-Walnut Creek The results in this report apply to the sainples analyzed in accordance with the chaur of <br /> custody document This analytical report must be reproduced in its errtiret} <br /> Page 2 of 12 <br />