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a— —N <br /> . ]455 McDowBlvd North Step <br /> Sequo>4a PPetaluma CA 94454 <br /> (707)792-1865 <br /> Analytical FAX(707)792-0342 <br /> www sequolalabs com <br /> URS Corp-Sacramento Project Arco Site 2186,Stockton,CA P312396 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36593 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 01/09/04 18 12 <br /> Purgeable Hydrocarbons by EPA 8015B - Quality Control <br /> Sequoia Analytical - Petaluma <br /> Reporting Spike Source °/6REC _ RPD <br /> Analyte Result Limit Units Level Result '/.RFC Limits RPD Limit Notes <br /> Batch 3120549-EPA 5030B,waters <br /> Matrix Spike Dup(3120549-MSDI) Source P312396-05 Prepared&Analyzed 12/19/03 <br /> Gasoline Range Organics 2280 50 ug/l 2750 NA 83 65-135 2 20 <br /> Surrogate 4-Bromoflucrobenzene 320 300 107 65-135 <br /> 41equoia <br /> 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 in its entirety <br /> Page I I of 17 <br />