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L819 Se n®la Striker Avenue,Suite 8 <br /> ® Sacramento,CA 95834 <br /> 1 (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www.sequoialabs.com <br /> Kleinfelder-Stockton Project: 1444 Mariposa 5309079 <br /> 2825 East Myrtle Street Project Number: 34202 Reported: <br /> Stockton CA,95205 Project Manager: Francis Bean 09/09/03 16:14 <br /> LVolatile Organic Compounds 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 3080408-EPA 5030B (P/T] <br /> Batch <br /> (3080408-BLK2) Prepared&Analyzed:09/04/03 1. <br /> p-Isopropyl toluene ND 0.0050 mg/kg <br /> COethylene chloride ND 0.025 <br /> vlethyl tert-butyl ether ND 0.0050 " <br /> Naphthalene ND 0.0050 . " <br /> n-Propylbenzene ND 0.0050 " <br /> styrene ND 0.0050 " <br /> 1,1,2-Tetrachloroethane ND 0.0050 " <br /> 1,1,2,2-Tetrachloroethane ND 0.0050 " <br /> Letrachloroethene ND 0.0050 <br /> oluene ND 0.0050 <br /> 1,2,3-Trichlorobenzene ND 0.0050 <br /> L2,4-Trichlorobenzene ND 0.0050 <br /> ,1,1-Trichloroethane ND 0.0050 <br /> 1,1',2-Trichloroethane ND 0.0050 " <br /> Trichloroethene ND 0.0050 " <br /> chlorofluoromethane ND 0.025 <br /> n <br /> 2,3-Trichloropropane ND 0.0050 <br /> 1,2,4-Trimethylbenzene ND 0.0050 <br /> L3 5-Trimethylbenzene ND 0.0050 <br /> inyl chloride ND 0.025 " <br /> m,p-Xylene ND 0.0050 " <br /> V-thanoI ND 0.20 " <br /> ert-amyl methyl ether ND 0.0050 " <br /> Ethyl tert-butyl ether ND 0.0050 " <br /> Di-isopropyl ether ND 0.0050 " <br /> -'ert-butyl alcohol ND 0.050 <br /> urrogate:DibromoJluoromethane 0.0353 0.0500 71 60-140 <br /> Surrogate:1,2-DCA-d4 0.0402 0.0500 80 60-140 <br /> Lurrogate:Toluene-d8 0.0488 0.0500 98 60-140 <br /> urrogate:4-BFB 0.0485 0.0500 97 60-140 <br /> L <br /> Sequoia Analytical-Sacramento 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 15 of 17 <br />