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404 N.Wiget Lane <br /> ` Sequoia Walnut Creek, 94598 <br /> (925)98 988-9600-9600 <br /> FAX(925)988-9673 <br /> � wwwequoialaUs.com <br /> i„W Analytical <br /> j1.San Joaquin Company Inc. Project 7500 W 11th St.Steet Tracy <br /> 1120 HollywoodAve.No.3 Project Number #9902.012 Reported: <br /> Oakland CA.,94602 Project Manager: Dai Watkins 26-May-00 12:24 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OE23002-EPA 5030B [P/T] <br /> r-: 'lank(OE23002-BLK1) Prepared&Analyzed:23-May-00 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 0.50 " <br /> Soluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 <br /> ?: urrogale:g,a,a-Trifluorotoluene 28.0 30.0 93.3 70-130 <br /> LCS(OE23002-BSI) Prepared&Analyzed:23-May-00 <br /> Benzene 16.2 0.50 ugll 20,0 81.0 70-130 <br /> i Toluene 17.4 0.50 20.0 810 70-130 <br /> Ethylbenzene 18.3 0.50 20.0 91.5 70-130 <br /> Xylenes(total) 54.5 0.50 60.0 90.8 70-130 <br /> a,a,a-Tris luorololuene 29.0 " 30.0 96.7 70-130 <br /> Matrix Spike(OE23002-MSI) Source:W005314-05 Prepared&Analyzed:23-May-00 <br /> .=benzene 16.6 0.50 ug/l 20,0 ND 83.0 70-130 <br /> froluene 17.7 0.50 20,0 ND 88.5 70-130 <br /> ~Ethylbenzene 18.7 0.50 20.0 ND 93.5 70-130 <br /> '- �ylenes(total) 55,6 0.50 60.0 ND 92.7 70.130 <br /> Surrogate:a,a,a-Triflrraratoluene 28.8 " 30.0 96.0 70-130 <br /> Matrix Spire Dup(OE23002-MSDI) Source:W005314-05 Prepared&Analyzed:23 May-00 <br /> enzene 16.6 0.50 ugll 20.0 ND 83.0 70-130 0 20 <br /> Toluene 17.7 0.50 20.0 ND 88.5 70.130 0 20 <br /> Ethylbenzene 18.6 0.50 20.0 ND 93.0 70-130 0.536 20 <br /> X.ylenes(total) 55.4 0,50 60.0 ND 92.3 70-130 0.360 20 <br /> 'urrogate:a,a,a-Trifluorololuene 28.7 " 30.0 95.7 70-130 <br /> 1 <br /> 11 __ <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analysed in accordance with the chain of <br /> custody document.This analytical report wust be reproduced in its entirely. <br /> i <br /> I <br /> Page 11 of 17 <br /> i <br />