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1455 McDowell Blvd North Ste D <br /> Sequoia Petaluma CA 94954 <br /> 4D (707)792-1865 <br /> FAX Analytical www <br /> labsco2 <br /> • www sequoialabs coni <br /> URS Corp-Sacramento Project Arco Site 5469, Stockton,CA P412205 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number G09JZ-0290 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 01/01/05 14 06 <br /> Purgeable Hydrocarbons by EPA 801513 - Quality Control <br /> Sequoia Analytical-Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %uREC Limits RPD Limit Notes <br /> Batch 4120469-EPA 5030B,waters/EPA 8015E-VOA <br /> Matrix Spike Dup(4120469-MSD1) Source P412205-06 Prepared&Analyzed 12/22/04 <br /> Gasoline Range Organics(C4-C12) 47700 1000 ugtl 55000 3000 81 67-101 1 20 <br /> Surrogate 4-Bromofluorobenzene 311 300 104 80-110 <br /> • <br /> Sequoia Analytical-Petaluma The results to 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 in its entirety <br /> Page 14 of 2l <br />