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t Sequoia 819 Sulker Avenue Suite 8 <br /> ® Sacramento CA 95834 <br /> (916)921-9600 <br /> FAX4W Analytical w equoalabsc(916)921 00 <br /> www sequoialahs tAm <br /> D K Barber PE&Associates Project Western Oil&Spread-Acampo S3111 l2 <br /> 8710 Mt Vernon Rd Project Number N/A Reported <br /> Auburn CA,95603 Project Manager Dan Barber 11/21/03 09 26 <br /> ' Aromatic Volatile Organics by EPA Method 8021B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> .Batch 3110070-EPA 5030B (P/T) <br /> I—Blank(3110070-BLK1) _ Prepared&Analyzed 11/06/03 <br /> Benzene ND 050 ug/l <br /> Toluene ND 050 <br /> thylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Surrogate a a a-7rifluorotoluene 11 8 IOU 118 60-140 <br /> Blank(3110070-BLK2) _ Prepared&Analyzed 11/10/03 <br /> Benzene Y ND 050 ug/l <br /> Toluene ND 050 <br /> t <br /> thylbenzetie ND 050ylenes(total) ND 0 50 <br /> Surrogate a a a-Th luoratoluene 11 9 �F` 100 119 60-140 <br /> W(3110070_BLK3) _ _ Prepared-&Analyzed 11/11/03 <br /> ,,Rnze ND 050 ug/l <br /> Toluene ND 0 50 " <br /> thylbenzene ND 0 50 <br /> tEylenes <br /> (total) ND 050 " <br /> Surrogate a a a-Tnfluorotoluene T 11 0 100 110 60-140 <br /> taboratory Control Sample(3110070-BSI) __ _ Prepared&Analyzed 11/06/03 <br /> erizene 112 050 ug/1 100 112 70-130 <br /> Toluene 115 050 100 115 70-130 <br /> thylbenzene 113 050 100 113 70-130 <br /> ylenes(total) 31 8 0 50 300 106 70-130 <br /> Surrogate a a a-Trif2uorotoluene W- 129 IOU 129 60-140 <br /> Laboratory Control Sample(3110070-BS2) -__ _ Prepared&Analyzed 11/10/03 <br /> _ <br /> ertzene 106 0 50 ug/l 100 106 70-130 <br /> Toluene 11 l 050 100 111 70-130 <br /> 'Ethylbenzene 110 050 100 110 70-130 <br /> Xylenes(total) _ 31 6 0 50 300 105 70-130 <br /> Surrogate a a a-Trifluorotoluene 121 100 121 60-140 <br /> ' uola 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 /> This analytical report must be reproduced in its entirety <br /> Page 6 of 8 <br /> 1 <br />