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Sequoia 1455 McDowell Ste D <br /> Petaluma <br /> CA CA 94954 <br /> (707)792-1865 <br /> Analytical FAX equoi labs c 42 <br />. www sequoialabs com <br /> URS Corp-Sacramento Project BP Heritage Site 11191,Stockton,Ca P407064 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36368 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 07/26/04 11 48 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Nota <br /> MW-7(P407064-07)Water Sampled 07/01/0413 10 Received 07/02/04 14 55 <br /> Tert-amyl methyl ether ND 10 ug/l 1 4070265 07/15/04 07/15/04 EPA 8260B <br /> $enzene ND 0 50 " <br /> Tert-butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 10 <br /> Ethanol ND I00 <br /> Ethylbenzene ND 050 " <br /> Ethyl tert-butyl ether ND 10 " <br /> Methyl Cert-butyl ether ND 050 " <br /> Toluene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate Dibromofluoromethane 123% 84-122 Sol <br /> Surrogate 1,2-Dichloroelhane-d4 130% 74-135 <br /> Surrogate Toluene-d8 111 % 84-119 " <br /> surrogate 4-Bromofluorobenzene 98% 86-119 " <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 /> Page 7 of 12 <br />