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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma,CA 94954 <br /> Analytical (707)792-1865 FAX(707)792-0342342 <br /> WWW sequoialabs com <br /> URS Corp-Sacramento Project BP Heritage Site 11191,Stockton,Ca P404678 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36368 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 05/27/04 15 02 <br /> Purgeable Hydrocarbons by EPA 8015B - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4E11037-EPA 50308 PIT <br /> Matrix Spike(4E11037-MSI) Source MNE0019-04 Prepared 05/11/04 Analyzed 05/12/04 <br /> Gasoline Range Organics(C4 C12) 397 50 ugA 550 ND 722 62-134 <br /> Surrogate 4-Bromofluorobenzene 440 11 400 110 70-130 <br /> Matrix Spike Dup(4E11037-MSDI) Source MNE0019-04 Prepared 05/11/04 Analyzed 05/I2/04 <br /> Gasoline Range Organics(C4 C12) 505 50 ug/1 550 ND 918 62-134 239 41 <br /> Surrogate 4-Bromofluorobenzene 433 <br /> 400 108 70-030 <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 slated results are reported on a wet weight basis <br /> This analytical report must be reproduced m its entirety <br /> Page 9 of 14 <br />