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'3uquOia <br />Analytical <br />9 <br />819 Striker Avenue Suite 8 <br />Sacramento, CA 95834 <br />(916)921-9600 <br />FAX (916) 921-0100 <br />www.sequoialabs.com <br />Kleinfelder - Stockton Project: Northbrook S308269 <br />2825 East Myrtle Street Project Number: 34202.E01 Reported: <br />Stockton CA, 95205 Project Manager: Joe Zilles 08/20/03 17:53 <br />Lo,asoline (2-Methylpentane to 1,2,4-Trimethylbenzene) and BTEX by EPA 8015M and 8021B - Quality Contr <br />Sequoia Analytical'- Sacramento <br />Reporting Spike Source %REC RPD <br />�nalyte Result Limit Units Level Result- %REC Limits RPD Limit Notes <br />3080164 - EPA 5030B (P/T) <br />C'3atch <br />Vlatrix Spike (3080164 -MSI) <br />Source: S308193-03 <br />Prepared & Analyzed: 08/13/03 <br />Benzene <br />0.0183 <br />0.0050 <br />mg/kg 0.0200 <br />ND <br />92 <br />60-140 <br />bluene <br />0.0184 <br />0.0050 <br />0.0200 <br />ND <br />92 <br />60-140 <br />L7-thylbenzene <br />0.0171 <br />0.0050 <br />0.0200 <br />ND <br />86 <br />60-140 <br />Xylenes (total) <br />0.0519 <br />0.0050 <br />0.0600 <br />ND <br />86 <br />60-140 <br />a,a,a-Trifluorotoluene <br />0.0201 <br />0.0200 <br />100 <br />60-140 <br />Lsurrogate: <br />qatrix Spike Dup (3080164-MSDI) <br />Source: S3081.93-03 <br />Prepared & Analyzed: 08/13/03 <br />Benzene <br />0.0176 <br />0.0050 <br />mg/kg 0.0200 <br />ND <br />88 <br />60-140 <br />4 <br />25 <br />luene <br />0.0176 <br />0.0050 <br />0.0200 . <br />ND <br />88 <br />60-140 <br />4 <br />25 <br />thylbenzene <br />�_'ylenes <br />0.0163 <br />0.0050 <br />0.0200 <br />ND <br />82 <br />.60-140 <br />5 <br />25 <br />(total) <br />0.0498 <br />0.0050• <br />0.0600 <br />ND <br />83 <br />60-140 <br />4 <br />25 <br />Currogate. a a,a-Trifluorotoluene <br />0.01930.0200 <br />97 <br />60-740 <br />L <br />L <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 />r custody document. Unless otherwise stated, results are reported on a wet weight basis. <br />LThis analytical report must be reproduced in its entirety. <br />I ,per Page 21 of 29 <br />