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Sequoia 1455 McDowell Blvd,North Ste D <br /> Petaluma,CA 94954 <br /> Analytical (707)792- 342 <br /> . 1 FAX equoi labs c 42 <br /> www sequoialabs coni <br /> URS Corp-Sacramento Project BP Hentage Site 11194,Tracy,Ca P308015 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36365 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 09/16/03 17 10 <br /> Volatile Organic Compounds by EPA Method 82605 <br /> Sequoia Analytical- Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-8(P308015-13)Water Sampled 07/30/03 14 00 Received 07/31/03 14 40 <br /> Tert-amyl methyl ether ND 1 0 ug/t 1 3080111 08/07/03 08/07/03 EPA 8260B <br /> Benzene ND 050 <br /> Tert-butyl alcohol ND 20 ^ <br /> Di-Isopropyl ether ND 10 ^ ^ <br /> Ethanol ND 100 ^ <br /> Ethylbenzene ND 050 <br /> Ethyl tent-butyl ether ND 10 <br /> Methyl tert-butyl ether 37 050 ^ ^ <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 ^ <br /> Surrogate Dibromofluoromethane 114% 84-122 " <br /> Surrogate 12-Dichloroelhane-d4 114% 74-135 " <br /> W <br /> rrogate Toluene-d8 109% 84-119rrogate 4-8romofluotobenzene 104% 86-119 <br /> equoia Analytical -Petaluma The results in this report apply 10 the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 11 of 21 <br />