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i <br /> Sequoia 899 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> (916)9.21-9600 <br /> FAX 00 <br /> Analytical <br /> www.sequoialabs.corn <br /> Delta Environmental Consultants(Cameron Park) Project. ARCO 5469, Stockton, CA <br /> 3330 Cameron Park Dr. Project Number: NIA <br /> Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson <br /> 0I/08/01 10--32 <br /> Industrial Solvents by EPA Method 8015 (modified) - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> '4nalyte Result <br /> Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OL24001 -EPA 3810 Heads ace <br /> Blank(OL24001-SLK/) Prepared: 12/24/00 Analyzed: 12/25/00 <br /> Methanol ND 9.00 mgll <br /> Surrogate;1 pentanol 4.33 5.00 <br /> 86.6 55-157 <br /> Surrogate:1 pentanol(dbwax) 4.68 5.00 <br /> 93.8 57-170 <br /> LCS(OL24001-BS1) <br /> Methanol Prepared: 12/24/00 Analyzed: 12/25/00 <br /> 6.00 1.00 mg/1 8.00 75.0 70-130 <br /> Surrogate;1 pentanol <br /> 4,09 11 5.00 <br /> 81.8 55-157 <br /> Surrogate:1 pentanol(dhwax) 3.96 ol5.00 79,E 57-170 <br /> Batch OL29026-EPA 3810 Heads ate <br /> Blank(OL29026-SLK/) — - _ Prepared: 12/29/00 Analyzed: 12/30/00 <br /> Wthmo, ND I.00 mg/lgate:1 pentanol 4.86 5.00 97.2 55-157 <br /> Surrogate, I-pentanol(dbwax) 4.49 5.00 89.8 57-17o <br /> (OL29026-BSI) Prepared: 12/29/00 Analyzed: 12/30/00 <br /> Methanol 8.03 1.00 mg/l 8.00 100 70-130 �— <br /> Surrogate: 1 pentanol 5.91 5.00 118 55-157 <br /> Surrogate:1 pentanol(dbwax) 5.51 5.00 110 57-170 <br /> Uoia Analytical -Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must he reproduced in its entirety, <br /> M Mage 13 of 14 <br />