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Seq 819 Sen , Ave Ste B <br /> uola Sacramento,CA 95834 <br /> a—)— <br /> (916)921-9600 <br /> Amok AW Analytical FAX(916)921-0100 <br /> www sequoia labs corn <br /> 7ettl;r-Ryan-Petaluma Project Tosco 1 1 192,Stockton,CA 5212192 <br /> 64 McDowell Blvd Ste B2 Project Number N/A Reported <br /> taluma CA,94954 Project Manager Dave Vossler 12/20/02 14 03 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> __::: <br /> MW-13 6 5' S212192-01 Soil Sampled 12/06/02 07 55 Received 12/10/02 09 15 <br /> Purgeable Hydrocarbons ND 050 mg/kg 1 2120200 12/16/02 IV 16102 DHS LUFT <br /> Benzene ND 00050 " Q 28 <br /> Toluene ND 00050 Q-28a <br /> Ethylbenzene ND 00050 Q-28c <br /> Xylenes(total) ND 00050 " <br /> Methyl tert-butyl ether ND 00050 " <br /> Surrogate a a a-Trti luorotoluene 86% 60440 " <br /> MW-13 10 5' S212192-02 Soil Sampled 12/06/02 08 05 Received 12/10/02 09 15 <br /> Purgeable Hydrocarbons ND 050 mg/kg 1 2120200 12/16/02 12/17/02 DHS LUFT <br /> Benzene ND 00050 <br /> Toluene ND 00050 " " " " „ Q-28a <br /> Ethylbenzene ND 00050 " Q-28b <br /> Xylenes(total) ND 00050 <br /> Methyl tert-butyl ether ND 00050 <br /> 91-91te a a a-Tris luorotoluene 77% 60-140 <br /> I <br /> uota Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 3 of 10 <br /> I <br />