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� f <br /> Sequoia 819 Striker Avenue,Suite 8 <br /> 7 Sacramento,CA 95834 <br /> V M—I) Analytical (916)921-96{10 <br /> FAX(916)921-0100 <br /> n'ww.sequoialabs.com <br /> ; <br /> Delta Environmental Consultants(Cameron Park) Project: Area 6I00 Trac C <br /> 3330 Cameron Park Dr.Ste 550 Project Number. y, A <br /> NIA Reported: <br /> Cameron Park CA,95682 Project Manager. Jay Johnson <br /> 09/21/0115:50 t <br /> h <br /> 'Volatile Organic Compounds by EPA Method 8260B-Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Unitsi <br /> Level Result "/-RFC Limits RPD Limit Notes <br /> Batch 1090180-EPA 5030B IP/T] t <br /> LCS(1090180-BS1) Pre aced&Ana] zed:09/19/01 � I <br /> Methyl tent-butyl ether 2.18 0.10 mg/kg 2.50 i I <br /> 8 g 87.2 60-140 <br /> 1 <br /> Surrogate:1,2-DCA-d4 2.18 2.50 87.2 60-140 <br /> Matrix S ikeMSI 1090181 l <br /> { ) Source: 5109118-14 Prepared&Analyzed:09/19/01 <br /> Methyl tent-bury!ether 2.09 0.10 mg/kg 2.50 ND 83.6 60-140 <br /> Surrogate:1.2-DCA-d4 2.09 2.50 83.6 60-I40 F <br /> i <br /> Matrix Spike Du 1090180-MSD1 <br /> Source:5109118-14 Prepared&Analyzed:09/19/01 <br /> Methyl ten-butyl ether 2.00 0.10 mg/kg 2.50 ND 80.0 60-140 4.40 25 <br /> Surrogate:l,2-DCA-d4 1.95 2.50 78.0 60-140 i <br /> 1 <br /> i <br /> l - <br /> . t , <br /> M <br /> I <br /> 'r I <br /> c <br /> l <br /> F A <br /> 1 <br /> S i <br /> I <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> E ' of custody document. This analytical report must be reproduced in its entirety. <br /> 3 <br />' S <br /> _ I <br /> I <br /> Page Page I6 of 24 <br />