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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX equa iabs.c m <br /> vvwwsequofalabs.cam <br /> Kleinfelder-Stockton Project: Del Monte S304427 <br /> 2825 East Myrtle Street Project Number: 12280 Reported: <br /> Stockton CA,95205 Project Manager: Tony Martin 04/29/03 I7:56 <br /> Gasoline.\BTEXIOxygenates by EPA method 8260B - Quality.Control. <br /> Sequoia Analytical-. Sacramento <br /> Reporting Spike Source °l°REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit totes <br /> Batch 3040355-EPA 50308 [PIT] <br /> Blank(3040355-BLKI) Prepared&Analyzed: 04/21/03 <br /> Ethanol ND 0.20 mg/kg <br /> Tert-butyl alcohol ND 0.05.0 " <br /> Methyl tert-butyl ether ND 0.0050 " <br /> Di-isopropyl ether ND 0.0050 " <br /> Ethyl tort-butyl ether ND 0.0050 " <br /> Tert-amyl methyl ether ND. 0.0050 <br /> 1,2-Dichlormtbane ND 0.0050 <br /> 1,2-Dibromoethane(EDB) ND 0.0050 " <br /> Benzene ND 0.0050 " <br /> Ethylbenzene ND .0.0050 " <br /> rr -Juone' ND 0.0050 <br /> l :nes(total) ND . 0.010 <br /> Gasoline(C6-C10) ND 1.0 " <br /> Surrogate:1,2-DCA-d4 0.0544 0.0500 109 60-140 <br /> Surrogate:Toluene-d8 0.0508 0.0500 102 60-140 <br /> Surrogate:4-BFB. 0.0429 0.0500 86 60-140 <br /> Laboratory Control Sample(3040355_-BSI) Prepared&Analyzed:04/21/03 <br /> Methyl tert-butyl ether 0.0515 0.0050 mg/kg 0.0448 115 60-140 <br /> Benzene. 0.0324 0.0050 0.0272 119 70-130 <br /> Toluene 0.155 0.0050 0.167 93 70-130 <br /> Gasoline(C6-C10) 2.04 1.0 2.20 93 70-130 <br /> Surrogate,-1,2-DCA-d4 - 0.0563 _ 0.0500 113 60-140 <br /> Surrogate:Toluene-d8 0.0491- 0.0500 .98 60-140 <br /> Surrogate:4-BFB 0.0462 0.0500 91 60-140 <br /> Matrix.Spike(30_40355-MSI) Source:S304393-01 Prepared&Analyzed: 04/21/03 <br /> Methyl tent-butyl ether 0.0490 0.0050 mg/kg 0.0448 ND 109 60-140 <br /> Benzene 0.0320 0.0050 0.0272 ND 118 60-140 <br /> Toluene 0.168 0.0050 0.167 ND 101 60-140 <br /> Gasoline(C&C10) 2.20 1.0 2.20 ND 100 60-140 <br /> Surrogate:1,2-DCA-d4 0.0505 0.0500 101 60-140 <br /> Surrogate:Toluene-d8 0.0507 0.0500 101 . 60-140 <br /> Surrogate:4-BFB 0.0467 0.0500 93 60-140 <br /> juoia 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 5 of 7 <br />