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1455 McDowell Blvd,North Ste D <br /> Sequoia Petaluma,CA 94954 <br /> FAX <br /> Analytical (707)792-1865 <br /> (707)792-0342 <br /> 4 Q www sequoialabs corn <br /> URS Corp-Sacramento Project Arco Site 6020,Manteca,CA P307306 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36616 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 07/18/03 15 20 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015B18021B <br /> Sequoia Analybcal-Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> Drum 1-4(P307306-01)Soil Sampled 07/16/03 09 45 Received 07/17/03 16 50 <br /> Gasoline Range Organics ND 10 mg/kg 1 3070376 07/18/03 07/18/03 EPA <br /> 8015B/802113 <br /> Benzene ND 00050 <br /> Toluene ND 00050 <br /> Ethylbenzene ND 00050 <br /> Xylenes(total) ND 00050 " <br /> Surrogate a a a-Tr+i luorotoluene 104% 65-135 <br /> Surrogate 4-Bromofluorobenzene 103% 65-135 <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise staled results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 3 of 7 <br />