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•Sequoia I455 McDowell Blvd,Horth Ste D <br /> Petaluma, <br /> a,CA 94954 <br /> a— )iW Analytical FAX(707)792-0(707)792-0342342 <br /> www,sequoialabs.com <br /> s <br /> URS Corp-Sacramento Project: Arco Site 5450,Stockton,CA P311175 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number: YVR36604 Reported: <br /> Sacramento CA,95833 Project Manager: Vernon P.Elarth 11/21/03 16:39 <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 Limit Notes <br /> Batch 3110425-EPA 5030,waters <br /> Matrix 5 Ike Du (3110425-MSD1) Source:P311175-03 Pre ared&Analyzed: 11/19/03 <br /> Gasoline Range Organics 2210 50 ugA 2750 21 80 65-135 2 20 <br /> Surrogate:4-Bromofluorobenzene 288 300 96 65-135 <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain <br /> is <br /> of custody document. Unless otherwise stated,results are reported on a wet weight <br /> basis. This analytical report must be reproduced in its entirety. <br /> Page 7 of 10 <br />