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11 � <br /> 41 <br /> s, 819 Striker Avenue,Suite 8 <br /> Lt • " <br /> Sequoia <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> FAX(916) 2 1 Analytical www.sequoialabs.corn <br /> 'Xleinfelder-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 /> Lam., Total Metals by EPA 6000/7000 Series Methods - Quality Control <br /> Sequoia Analytical -',Sacramento <br /> ]p <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3090113-EPA 3050B , <br /> Blank(3090113-BLK1) Prepared&Analyzed: 09/09/03 <br /> Cadmium ND 0.25 mg/kg <br /> Lhromium ND 0.25 " <br /> .`ead ND 2.5 <br /> Nickel ND 1.0 <br /> Zinc ND 2.0 <br /> LLaboratory Control Sample(3090113-BSI) Prepared&Analyzed: 09/09/03 <br /> Cadmium 46.1 0.25 mg/kg 50.0 92 80-120 <br /> Chromium 46.4 0.25 50.0 93 80-120 <br /> Lead 45.3 2.5 50.0 91 80-120 <br /> ickel 45.6 -1.0 50.0 91 80-120 <br /> Zinc 47.9 2.0 50.0 96 80-120 <br /> pike(3090113-MS1) <br /> L <br /> atrixSSource:S308613-01 Prep_aed 09%09/03 <br /> ad 43:2 1.0 mg/kg 50.0 2.2 82 80-120 <br /> Chromium 79.2 1.0 50.0 34 90 80-120 <br /> L.ead 113 10 . 50.0 66 94 80-120 # <br /> lickel 62.1 4.0 50.0 21 82 80-120 <br /> Zir nc 221' 8.0 50.0 160 122 80-120 Q-LIM <br /> Matrix Spike Dup(3090113-MSD1) Source: S308613-01 Prepared&Analyzed:09/09/03 <br /> admium - 43.4 1.0 mg/kg 50.0 2.2 82 80-120 0.5 20 <br /> Chromium 67.7 1.0 50.0 34 67 80-120 16 20 Q-LIM <br /> 4JT_ead 86.5 10 50.0 66 41 80-120 27 20 Q-LIM <br /> ickel 63.2 4.0 50.0 21 84 80-120 2 20 <br /> 1P 236 8.0 50.0 160 132 80-120 7 20 Q-LIM <br /> 1 <br /> L <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain a t <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 /> f <br /> LPage 9 of 17 <br />