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r <br />S819 ^q �0�� 819 Striker Avenue, Suite 8 <br />c Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 90 <br />P%W Analytical wwwsequoialabs.com <br />L <br />L <br />Kleinfelder - Stockton <br />Project: <br />Northbrook <br />S309020 <br />2825 East Myrtle Street <br />Project Number: <br />34202.E01 <br />Reported: <br />Stockton CA, 95205 <br />Project Manager: <br />Joe Zilles <br />09/05/03 14:17 <br />Diesel Hydrocarbons with Silica Gel Cleanup by DHS LUFT - Quality Control <br />Sequoia Analytical - Sacramento <br />Reporting Spike Source %REC RPD <br />Analyte Result Limit Units Levet Result %REC Limits RPD Limit Notes <br />LBatch <br />3090050 - EPA 3550B <br />Blank (3090050-BLK1) <br />Prepared & Analyzed: 09/04/03 <br />Diesel Range Organics (CIO -C28) <br />ND <br />2.0 mg/kg <br />LSurrogate: <br />Octacosane <br />Laboratory Control Sample (3090050-BS1) <br />0.978 <br />0.667 147 50-150 <br />Prepared & Analyzed: 09/04/03 <br />- <br />Diesel Range Organics (C10 -C28) <br />15.5 <br />2.0 mg/kg 16.7 93 60-140 <br />LSurrogate: <br />Octacosane 0.967 <br />Laboratory Control Sample Dup (3090050-BSD1) <br />0.667 145 50 150 <br />Prepared & Analyzed: 09/04/03 <br />Range Organics (CIO -C28) <br />16.2 <br />2.0 mg/kg `' 16.7 97 60-140 4 40 <br />CDiesel <br />Surrogate: Octacosane <br />0.952 <br />0.667 143 50-150 <br />L <br />L <br />L <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 />L This analytical report must be reproduced in its entirety. <br />Page 11 of 18 <br />