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• •Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> ® (916)921-9600 <br /> Analytical www.sequoialabs.com(916)92 1-0100 <br /> ww.sequoialabs.com <br /> r - <br /> Kleinfelder-Stockton Project: 1444 Mariposa S309079 <br /> 12825 East Myrtle Street Project Number: 34202 Reported: <br /> Stockton CA,95205 Project Manager: Francis Bean 09/09/03 16:14 <br /> Polychlorinated Biphenyls by EPA Method 8082 - 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 /> CBatch 3090108-EPA 3550B <br /> ,Blank(30901.08-BLKI) Prepared&Analyzed:09/08/03 . <br /> PCB-1016 ND 33 ug/kg <br /> °CB-1221 ND 60 <br /> 'CB-1232 ND 33 <br /> CB-1242 ND 33 <br /> PCB-1248 ND 33 " <br /> L"CB-1 <br /> CB-1254 ND 33 " <br /> 260 ND 33 " <br /> Surrogate:Decachlorobiphenyl 32.7 33.3 98 50-150 <br /> �aboratory Control Sample(3090108-BSI) Prepared&Analyzed: 09/08/03 <br /> CB-1016 316 33 ug/kg 333 95 50-150 <br /> PCB-1260 300 33 333 90 50-150 <br /> �urrogate:Decachlorobiphenyl 35.9 33.3 108 50-150 <br /> Matrix Spike(3090108-MSI) Source:S309079-01 Prepared&Analyzed: 09/08/03 <br /> PCB-1016 300 33 ug/kg 333 ND 90 50-150 <br /> 'CB-1260 268 33 11333 ND 80 50-150 <br /> �urrogate:Decachlorobiphenyl 32.4 33.3 97 50-150 <br /> Matrix Spike Dup(3090108-MSD1) Source:'S309079-01 Prepared:09/08/03 Analyzed': 09/09/03 <br /> CB-1016 365 33 ug/kg 333 ND 110 50-150 20 50 <br /> CB-1260 338 33 333 ND 102 50-150 23 50 <br /> c'urrogate:Decachlorobiphenyl 44.5 .33.3 134 50-lM <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 /> L <br /> Page 11 of 17 <br />