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4D (701455 McDowell Blvd,North Ste D <br /> Sequoia Petaluma CA 94954 <br /> Analytical FAX <br /> 7)792-1865 <br /> (707)792-0342 <br /> www sequoialabs com <br /> URS Corp-Sacramento Project BP Heritage Site 11194,Tracy,Ca P411027 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36365 Reported <br /> Sacramento CA,95833 Project Manager Jeff Brooks 12/06/04 15 39 <br /> Purgeable Hydrocarbons by EPA 8015B <br /> Sequoia Analytical- Petaluma <br /> Reporting <br /> Analyte Result Limit Units Ihlution Batch Prepared Analyzed Method Note <br /> AMW-3(P411027-01)Water Sampled 10/28/04 II 15 Received 10/29/04 13 10 <br /> Gasoline Range Organics(C4-C12) ND 50 ug/l 1 4110244 11/09/04 11/09104 EPA 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 89% 804-110 " <br /> AMW-5(P411027-02)Water Sampled 10/28/04 12 45 Received 10/29/04 13 10 <br /> Gasoline Range Organics(C4-C12) ND 50 ug/l 1 4110244 11/09/04 11/09/04 EPA 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 103% 804-110 " <br /> AMW-6(P411027-03)Water Sampled 10/28/04 12 05 Received 10/29/04 13 10 <br /> Gasoline Range Organics(C4-C12) ND 50 ug/l 1 4110244 11/09/04 11/09/04 EPA 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 85% 804-110 11 F, " <br /> MW4(P411027-04)Water Sampled 10/28/04 12 25 Received 10/29/04 13 10 <br /> Gasoline Range Organics(C4-C12) 2000 100 ug/l 2 4110244 11/09/04 11/09/04 EPA 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 108% 804-110 " <br /> W-6(P411027-05)Water Sampled 10/28/04 13 00 Received 10/29/04 13 10 <br /> Gasoline Range Organics(C4-CI2) 9800 250 ug/l 5 4110244 11/09/04 11/09/04 EPA 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 111% 804-110 LH <br /> MW-7(P411027-06)Water Sampled 10128/04 11 45 Received 10/29/04 13 10 <br /> Gasoline Range Organics(C4-C 12) ND 50 ugA 1 4110244 11/09/04 11/09/04 EPA 8015B-VOA <br /> Surrogate 4-Bromofluorobenzene 104% 804-110 <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 werght basis <br /> This analytical report must be reproduced in us entirely <br /> Page 3 of 10 <br />