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1 <br /> 4DSequoia 1455McDowPetluma,CA 49544 <br /> (707)792-1865 <br /> Analytical FAX(707)792-0342 <br /> . www sequoralabs coin <br />' URS Corp-Sacramento Project Arco Site 760,Lodi,CA40 546 <br /> P 3 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number G097Z-0039 Reported <br /> Sacramento CA,95833 Protect Manager Vernon P Elarth 03/26/04 16 40 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B/8021B <br />' Sequoia Analytical -Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> Drum 1-3(P403546-01)Soil Sampled 03/22/04 16 30 Received 03/25/0411 00 <br /> Gasoline Range Organics(C6-C10) ND 10 mg/kg 1 4030739 03/25/04 03/25/04 EPA <br /> 8015B/8021B <br /> Benzene ND 00050 <br /> Toluene ND 00050 <br /> Ethylbenzene ND 00050 " <br /> Xylenes(total) ND 00050 " <br /> Surrogate a a a-Triuorotoluene 84% 65-135 <br /> Surrogate 4-Bromofluorobenzene 77% 65-135 <br /> Drum 3-7(P403546-02)Soil Sampled 03/22/04 16 30 Received 03/25/04 11 00 <br /> Gasoline Range Organics(C6-C10) ND 1 0 mg/kg 1 4030739 03/25/04 03/25/04 EPA <br /> 8015B18021H <br /> Benzene ND 00050 <br /> Toluene ND 00050 " <br /> thylbenzene ND 00050 " <br /> ,lWylenes(total) ND 00050 " <br /> Surrogate a,a,a-Trifluorotoluene 92% 65-135 <br /> Surrogate 4-Bromofluorobenzene 82% 65-135 " <br />' Sequoia Analytical-Petaluma 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 werght basis <br />' Ars analytical report must be reproduced in its entirety <br /> Page 3 of 7 <br />