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Sequoia , j \ J 819 Striker Ave Ste 8 <br /> IDX11/ �.I Sacramento,CA 95834 <br /> (916)921-9600 <br /> iW Analytical FAX(916)921-0100 <br /> www.sequoialabs.com <br /> D.K.Barber PE&Associates Project: Western Oil&Spread-Acampo S311112 <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 /> Blank(3110070-BLKI) Prepared&Analyzed: 11/06/03 <br /> Benzene ND 0.50 ug/1 <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Surrogate:a,a,a-Trifluorotoluene 11.8 10.0 118 60-140 <br /> Blank(3110070-BLK2) Prepared&Analyzed: 11/10/03 <br /> Benzene ND 0.50 ug/I <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 <br /> Surrogate:a,a,a-Trifluorotoluene 11.9 10.0 119 60-140 <br /> Blank(3110070-BLK3) Prepared&Analyzed: 11/11/03 <br /> Benzene ND 0.50 ug/I <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 <br /> Surrogate:a,a,a-Trifluorotoluene 11.0 10.0 110 60-140 <br /> Laboratory Control Sample(3110070-BS1) Prepared&Analyzed: 11/06/03 <br /> Benzene 11.2 0.50 ug/I 10.0 112 70-130 <br /> Toluene 11.5 0.50 10.0 115 70-130 <br /> Ethylbenzene 11.3 0.50 10.0 113 70-130 <br /> Xylenes(total) 31.8 0.50 30.0 106 70-130 <br /> Surrogate:a,a,a-Trifluorotoluene 12.9 10.0 129 60-140 <br /> Laboratory Control Sample(3110070-BS2) Prepared&Analyzed: 11/10/03 <br /> Benzene 10.6 0.50 ug/1 10.0 106 70-130 <br /> Toluene 11.1 0.50 10.0 111 70-130 <br /> Ethylbenzene 11.0 0.50 10.0 110 70-130 <br /> Xylenes(total) 31.6 0.50 30.0 105 70-130 <br /> Surrogate:a,a,a-Trifluorotoluene 12.1 10.0 121 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document. Unless otherwise stated,results are reported on a wet weight <br /> basis. This analytical report must be reproduced in its entirety. <br /> Page 6 of 8 <br /> r< <br />