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9 <br /> 0 <br /> I SeuOrd I 1455 McDowell Blvd,North SteD <br /> 11 Petaluma,CA 94954 <br /> 4D (707)792-1865 <br /> Analytical FAX(707)792-0342 <br /> www.sequoialabs.com I <br /> I <br /> URS Corp-Sacramento Project: Arco Site 434,Lodi,CA P404300 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number: G09JZ-0035 Reported: <br /> Sacramento CA,95833 Project Manager: Vernon P.Elarth 04/15/04 16:48 <br /> Purgeable Hydrocarbons by EPA 8015B- Quality Control <br /> Sequoia Analytical - Petaluma <br /> i <br /> Repotting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4040336-EPA 5030,soils j <br /> Blank(4040336-BLKI) Prepared&Analyzed:04/14/04 1 <br /> Gasoline Range Organics(C4-02) ND 1.0 mg/kg <br /> Surrogate:4-Bromofluorohenzene 0.291 0.300 97 65-135 <br /> Laboratory Control Sample(4040336-BSI) Prepared&Analyzed:.04/14/04 <br /> Gasoline Range Organics(C4-C12) 1.89 1.0 mg/kg 2.75 69 65-135 <br /> i <br /> Surrogate'4-Bromofluorobenzene 0.288 0.300 i 96 65-135 <br /> Matrix Spike(4040336-MSI) Source:P404234-19 Prepared&Analyzed:'04/14/04 <br /> Gasoline Range Organics(C4-C 12) 5.38 2.0 mg/kg 5.50 3.0 43 65-135 QCO2 <br /> Surrogate:4-Bromofluorobenzene 0.559 0.300 186 65-135 S01 <br /> Matrix Spike Du (4040336-MSD1) Source:P404234-19 Prepared&Analyzed:04/14/04 <br /> Gasoline Range Organics(C4-C 12) 3.86 2.0 mg/kg 5.50 3.0 16 65-135 33 20 QCO2 <br /> Surrogate:4-Bromofluorobenzene 0.564 0.300 1 188 65-135 S01 <br /> 1 <br /> I <br />' � k <br /> I <br /> JI <br /> ^ i ` <br /> r <br /> I <br /> I <br /> I I <br /> j <br /> i <br /> � I <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain of <br /> i custody document. Unlessllotherwise stated,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> F <br /> I Page 6 of 9 <br /> I� i <br />