ARCHIVED REPORTS_XR0008051 CASE 1

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•' 1455 McDowell Blvd,North Ste D •' SequoiaFAX Petaluma CA 94954 865 Analytical (707)792(707)792 0342342 www sequoialabs com URS Corp-Sacramento Project BP Hentage Site 11194,Tracy,Ca P502088 2870 Gateway Oaks Dnve Suite 300 Project Number WR36365 Reported Sacramento CA,95833 Project Manager Jeff Brooks 02/16/05 16 54 Purgeable Hydrocarbons by EPA 8015B Sequoia Analytical-Petaluma Reporting Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note AMW-3(P502088-01)Water Sampled 01/31/0514 30 Received 02/02/05 06 55 Gasoline Range Organics(C4-C 12) ND 50 ug/I I 5020071 02/04/05 02/05/05 EPA 8015B VOA Surrogate 4-Bromofluorobenzene 89% 80-110 " AMW-5(P502088-02)Water Sampled 01/31/05 14 55 Received 02/02/05 06 55 Gasoline Range Organics(C4-C 12) ND 50 ug/l 1 5020071 02/04/05 02/05/05 EPA 801513-VOA Surrogate 4-Bromofluorobenzene 90% 80-110 " AMW-6(P502088-03)Water Sampled 01/31/05 15 10 Received 02/02/05 06 55 Gasoline Range Organics(C4-C12) ND 50 ug/l 1 5020071 02/04/05 02/05/45 EPA 8015B-VOA Surrogate 4-Bromofluorobenzene 92% 80-110 " MW-4(P502088-04)Water Sampled 01/31/0515 10 Received 02/02/05 06 55 Gasoline Range Organics(C4-C12) 900 50 ug/1 1 5020071 02/04/05 02/05/05 EPA 801513-VOA Surrogate 4-Bromofluorobenzene 100% 80-110 " IW-6(P502088-05)Water Sampled 01/31/05 15 25 Received 02/02/05 06 55 Gasoline Range Organics(C4-C12) 3900 250 ug/l 5 5020071 02/04/05 02/05/05 EPA 801513-VOA Surrogate 4-Bromofluorobenzene 99% 80-110 " MW-7(P502088-06)Water Sampled 01/31/0514 50 Received 02/02/05 06 55 Gasoline Range Organics(C4-C12) ND 50 ug/l 1 5020071 02/04/05 02/05/05 EPA 8015E-VOA Surrogate 4-Bromofluorobenzene 93% 80-110 " Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain of custody document Unless otherwise stated results are reported on a wet weight basis . This analytical report must be reproduced in its entirety Page 3 of 10