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a� <br /> .1 <br /> l Blvd,North Se D <br /> a— ) Sequoia 1455Mcl7owPetaaluma,CA9419 4 <br /> (707)792-1865 <br /> Analytical <br /> FAX(707)792.4342 <br /> www sequoialabs com <br /> URS Corp-Sacramento Project BP Hentage Site 11191,Stockton,Ca P401434 <br /> 2870 Gateway Oaks Drive Suite 300 Project Nurnbcr WR36368 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 02/11/04 16 10 <br /> Purgeable Hydrocarbons by EPA 8015B - Quality Control <br /> Sequoia Analytical - Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Luno Notes <br /> Batch 4020047-EPA 5030B,waters <br /> Blank(4020047-BLKI) Prepared&Analyzed 02/03/04 <br /> Gasoline Range Organics ND 50 ug/I <br /> Surrogate 4-Bromofluorobenzene 319 300 106 65-135 <br /> Laboratory Control Sample(4020047-BS1) Prepared&Analyzed 02/03/04 <br /> Gasoline Range Organics 2140 50 ug/l 2750 78 65-135 <br /> Surrogate 4-Bromofluorobenzene 326 300 109 65-135 <br /> Matrix Spike(4020047-MSI) Source P401433-13 Prepared&Analyzed 02/03/04 <br /> Gasoline Range Organics 2200 50 119/1 2750 38 79 65-135 <br /> Surrogate 4-Bromofluorobenzene 317 300 106 65-135 <br /> Matrix Spike Dup(4020047-MSD1) Source P401433-13 Prepared&Analyzed 02/03/04 <br /> Gasoline Range Organics 2180 50 ug/1 2750 38 78 65-135 09 20 �T <br /> urrogate 4-Bromofluorobenzene 322 300 107 65-135 <br /> I <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 must be reproduced to its entirety <br /> Page 8 of 14 <br />