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ID (707)1455 McDowell Blvd,North SicSequoia Petaluma,CA 9495444Analytical FAX 792-1865 <br /> 707 792-0342 <br /> 0 www sequmalabs cam <br /> URS Corp-Sacramento Project BP Hentage Site 11194,Tracy,Ca P401433 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36365 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 02/11/04 16 31 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Petaluma <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-3(P401433-09)Water Sampled 01/26/04 13 10 Received 01/27/04 17 00 <br /> Tert-amyl methyl ether ND 10 ugA 1 4020142 02105/04 02/06/04 EPA 8260B <br /> Benzene ND 050 It <br /> 11 <br /> Di-isopropyl ether ND 10 It " <br /> Ethanol ND 100 " <br /> Ethylbcnzene ND 050 " <br /> Ethyl tert-butyl ether ND 1 0 " <br /> Methyl tert-butyl ether 15 0 50 " <br /> Toluene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Surrogate Dibromofluoromethane 105% 84-122 " <br /> Surrogate 11-Dwhloroelhane-d4 105% 74-135 " <br /> Surrogate Toluene-d8 100% 84-119 " <br /> AdmMW-3(P401433-09RE1)Water Sampled 01/26/0413 10 Received 01/27/04 17 00 <br /> Wert-butyl alcohol 450 100 ug/l 5 4020167 02/06/04 02/06/04 EPA 82609 <br /> Surrogate DibromoJluoromethane 101% 84-122 " <br /> Surrogate 12-Dtchloroethane-d4 104% 74-135 " <br /> Surrogate Toluene-d8 99% 84-119 " <br /> MW-4(P401433-10)Water Sampled 01/26/04 14 10 Received 01/27/04 17 00 <br /> Tert-amyl methyl ether ND 10 ug/1 10 4020167 02/06/04 02/06/04 EPA 8260B <br /> Benzene ND 5 0 " <br /> Tert-butyl alcohol 230 200 " <br /> Di-isopropyl ether ND 10 " <br /> Ethanol ND 1000 " <br /> Ethylbenzene ND 5 0 " <br /> Ethyl tert-butyl ether ND 10 " <br /> Methyl Cert-butyl ether 16 5 0 " <br /> Toluene ND 5 0 " <br /> Xylenes(total) ND 5 0 " <br /> Surrogate Dibromofluoromethane 103% 84-122 " <br /> Surrogate 1,2-Dichloroethane-d4 101 % 74-135 " <br /> Surrogate Toluene-d8 98% 84-119 <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 stated results are reported on a wet weight <br /> 0 basis This analytical report must be reproduced in its entirety <br /> Page 9 of 18 <br />