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a <br /> — ) <br /> 455 McDowallBlvd,North Ste D <br /> 1 <br /> Sequoia Petaalumum a,CA 94954 <br /> Analytical (707)792- <br /> 1865 <br /> qqWFAX(707)792-0342342 <br /> wwwsequoiala6s.com <br /> URS Corp-Sacramento Project: Arco Site 5469,Stockton,CA P309139 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number: WR36605 Reported: <br /> Sacramento CA,95833 Project Manager: Jay Johnson 10/16/03 19:28 <br /> BTEX by 8021B <br /> Sequoia Analytical- Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-9(P309139-09)Water Sampled:09/09/03 03:31 Received:09/09/03 10:20 <br /> Benzene ND 0.50 ug/l 1 3090325 09/16/03 09/16/03 EPA 8021E <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Surrogate:a,a,a-Trifluorotoluene 103% 65-13.5 " <br /> MW-10(P309139-10)Water Sampled:0910910304:17 Received:09/09/03 10:20 <br /> Benzene 37 0.50 ug/i 1 3090325 09/16/03 09/16/03 EPA 8021B <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 0.50 ^ <br /> Surrogate:a,a,a-Trij�uorotoluene 104% 65-135 " <br /> I <br /> I <br /> I <br /> I <br /> i <br /> I <br /> i <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 weight basis. <br /> This analytical report mutt be reproduced in its entirety. <br /> i <br /> Page 9 of 38 <br />