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i <br /> Sequoia 819 Striker Avenue,Suite <br /> �.i Sacramento.G4 958344 <br /> (916)921-9600 <br /> FAX(916)921-0 100 <br /> Analytical www.sequolalabs.corn <br /> Kleinfelder-Stockton. Project: Del Monte 5304427 <br /> 2825 East Myrtle Street Project Number: 12280 Reported. <br /> Stockton CA,95205 Project Manager: Tony Martin 04/29103 I7:56 <br /> Gas oline\BTEXIOxygenates by EPA method 8260B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3040355-BPA 5030B [PIT] <br /> Matrix Spike Dup(3040355-MSDI) Source:S304393-01 Prepared&Analyzed:04/21/03 <br /> Methyl tort-butyl ether 0.0483 0.0050 mg/kg 0.0448 ND 1W 60-140 . 1 25 <br /> Benzene 0.0316 0.0050 0.0272 ND 116 60-140 1 25 <br /> Toluene ' 0.165 _ 0A050 0.167 ND 99 60-140 2 25 <br /> Gasoline(C6-C 10) 2.15 LO 2.20 ND 98 60-140 2 25 <br /> Surrogate:1,2-DCA-d4 — - -- 0.0498 O.OSOO 100 60-140 <br /> Surrogate:Toluene-d8 0.0493 0.0500 99 60-140 <br /> Surrogate:4-BF8 0.0466 0.0500 93 60-140 <br /> (\ luoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 6 of 7 <br />