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404 N.WlgetLane <br /> ` Sequoia Walnut Creek,CA 94598 <br /> (925)988-9600 <br /> FAX(925)988-9673 <br /> Analyticalwww.sequoialabs.com <br /> 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 /> 4: ( Total Furgeable Hydrocarbons (C6-C12) and BTEX by DHS.LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> i_ Analyte Result Limit Units Level Result %REC Limits_ RPD Limit Notes <br /> Batch.OE23001-EPA 5030B [P/T] <br /> C- lar)lc(OE23001-BLK1) Prepared&Analyzed:23-May-00 <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> benzene ND 0.50 " <br /> �I oluene ND 0.50 " <br /> `Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0,50 " <br /> i.;:iSurrogate:qqa-Triuorotoluene 31.3 30.0 104 70-130 <br /> LCS(OE23001-BSI) Prepared&Analyzed:23-May-00 <br /> iBenzene 16.2 0.50 ugtl 20.0 81.0 70-130 <br /> 'Toluene 17.3 0.50 20.0 86.5 70-130 <br /> a <br /> Ethvlhenzene 18.2 0.50 20.0 91.0 70-130 <br /> Xylenes(total) 56.8 0.50 60.0 94.7 70-130 <br /> '*te:a,qa-Trl uorofoluene 274 " 30.0 91.3 70-130 <br /> Matrix Spike(OE23001-MS1) Source:W005312-03 Prepared&Analyzed:23-May-00 <br /> $enzene 15.3 0.50 ugII 20.0 ND 76.5 70-130 <br /> L <br /> Toluene 16.4 0.50 20.0 ND 82.0 70-130 <br /> Ethylbenzene 19.2 0.50 20.0 ND 96,0 70-130 <br /> :Xylenes(total) 54.6 0.50 60.0 ND 91.0 70-I30 <br /> i <br /> '' urrogate:a,a,a-Trifluorotoluene 26.3 " 30.0 87.7 70-130 <br /> Matrix Spike Duh (OE23001-MSD1) Source:W005312-03 Prepared&Analyzed:23-May-00 <br /> ( ' enzene 15.0 0.50 alr/l 20.0 ND 75.0 70-130 1.98 20 <br /> ':Toluene 17.0 0.50 20,0 ND 85.0 70-130 3.59 20 <br /> Ethylbenzene 17.5 0.50 20.0 ND 87.5 70-130 9.26 20 <br /> Xylenes(total) 55.5 0.50 60.0 ND 92.5 70-130 1.63 20 <br /> ti= <br /> A�urrogate:a,a,a-Trifluorotoluene 28.0 30.0 93.3 70-130 <br /> f <br /> 'Sequoia Analytical-Wahilat Creek The results in this reps t apply to the samples analyzed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety, <br /> Page 10 of 17 <br />