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r ..I <br /> D <br /> 819 mentor Ave Ste b <br /> Sequoia Sacramento,CA 95834 <br /> I: (916)921-9600 <br /> iW Analytical <br /> FAX(916)921-0100 <br /> www.sequoielebs.com <br /> V <br /> Kleinfelder-Stockton Project: Sperry Property 5310505 <br /> 2825 East Myrtle Street Project Number: 36012.G01 Reported: <br /> Stockton CA,95205 Project Manager: Ron Loutzenhiser 10/29/03 12:48 <br /> EDB and DBCP by EPA Method 504.1 - Quality Control <br /> Sequoia Analytical -Morgan Hill <br /> Reporting Spike Source %REC —E <br /> PD <br /> Analyte Result Limit Units Level Result %REC Limits RPD LimitNoWs <br /> Batch 3J24005-EPA 504 <br /> Blank(3J24005-BLKl) Prepared&Analyzed: 10/24/03 <br /> 1,2-Dibromoethane(EDB) ND 0.020 ug/I <br /> 1,2-Dibromo-3chloropropane ND 0.010 " <br /> r <br /> Surrogate:1,3-Dibromopropane 2.71 2.86 94.8 37-102 <br /> Laboratory Control Sample(3J24005-BS1) Prepared&Analyzed: 10/24/03 <br /> _ I,2-Dibromoethane(EDB) 0.261 0.020 ug/I 0.250 104 70-130 <br /> 1,2-Dibromo-3chloropropme 0.191 0.010 0.250 76A 70-130 <br /> Surrogate:1.3-Dibromopropane 2.78 2.86 97.2 37-102 <br /> Laboratory Control Sample Dup(3J24005-BSD1) Prepared&Analyzed: 10/24/03 <br /> 1,2-Dibromoethane(EDB) 0.287 0.020 ug/I 0.250 115 70-130 9.49 20 <br /> 1,2-Dibromo-3chloropropane 0.220 0.010 0.250 88.0 70-130 14.1 20 <br /> Surrogate:1,3-Dibromopropane 2.82 1.86 98.6 37-102 <br /> 1r <br /> v <br /> V <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 5 of 7 <br />