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StnAve Ste 8 <br /> Sequoia Sacramento, <br /> CA 95834 <br /> (916)921-9600 <br /> a_ � <br /> Analytical FAX(916)921-0100 <br /> www.sequoialabs.com <br /> Kleinfelder-Stockton Project: 24720 Sowles Rd 5409397 <br /> 2825 East Myrtle Street Project Number: 42270 Reported: <br /> Stockton CA,95205 Project Manager: Ryan Olsen 10/14/04 18:24 <br /> EDB and DBCP by EPA Method 504.1 - Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4J13004-EPA 504 <br /> Blank(4J13004-BLKI) Prepared&Analyzed: 10/13/04 <br /> 1,2-Dibromo-3-chloropropane ND 0.010 ug/l <br /> Surrogate:l,3-Dibromopropane 2.96 2.86 103 37-102 Sol <br /> Laboratory Control Sample(4J13004-BSI) Prepared&Analyzed: 10/13/04 <br /> 1,2-Dibromo-3-chloropropane 0.213 0.010 ug/l 0.250 85 70-130 <br /> Surrogate:l,3-Dibromopropane 3.33 2.86 116 37-102 Sol <br /> Laboratory Control Sample Dup(4J13004-BSD1) Prepared&Analyzed: 10/13/04 <br /> 1,2-Dibromo-3-chloropropane 0.223 0.010 ug/1 0.250 89 70-130 5 20 <br /> Surrogate:l,3-Dibromopropane 3.33 2.86 116 37-102 SOI <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 />