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404 N.Wiget Lane <br /> Sequoia Walnut Creels,CA 94598 <br /> (925)988-9600 <br /> FAX(925)988-9673 <br /> Analytical www.sequolalabs.com <br /> 1 gall Joaquin Company Inc. Project: 7500 W 11th St.Steet Tracy <br /> 1120 Hollywood Ave,No.3 Project Number: 4 9902.012 Reported: <br /> Oakland CA.,94602 Project Manager: Dai Watkins 24-May-00 14:51 <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 /> �:::.i'Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OB01001-EPA 5030B [PIT] <br /> Matrix Spike Dup (OE01001-MSD1) Source: W004511-01RE1Prepared&Analyzed: 01-May-00 Q-07 <br /> Benzene 17.0 0.50 ug/I 20.0 ND 85.0 70-130 7.37 20 <br /> -Toluene 18.3 0.50 20.0 ND 91.5 70-130 6.86 20 <br /> phylbenzene 17.8 0.50 20.0 ND 89.0 70-130 22.0 20 <br /> 'Xy[enes(total) 59.0 0.50 60.0 ND 98.3 70-130 9.52 20 <br /> :._.t urrogate:a,a,a-T+tifluorotoluene 25.7 30.0 85.7 70-130 <br /> ?.- EBatch OE01002-EPA 5030E [MeOH] <br /> Blank (OE01002-BILKt) Prepared&Analyzed: 01-May-00 <br /> Purgeable Hydrocarbons ND 1.0 mg/kg <br /> -JBenzene ND 0.0050 " <br /> Toluene ND 0.0050 " <br /> F"."Ibenzene ND 0.0050 " <br /> V':=>ies(total) ND 0.0050 " <br /> Surrogate:a,a,a-Tris luoromluene 0.558 " 0.600 93.0 40-140 <br /> I,CS(OEUlUO2-BS1) Prepared&Analyzed: 01 <br /> . -May-00 <br /> 'Benzene 0.600 0.0050 mglkg 0.800 75.0 50-150 <br /> Toluene 0.658 0.0050 0.800 82.2 50-150 <br /> "Ethylbenzene 0.732 0.0050 0.800 91.5 50-150 <br /> >'Xylenes(total) 2.23 0.0050 2.40 92.9 50-150 <br /> Surrogate:aga-Tris luorotoluene 0.678 " 0.600 113 40-140 <br /> ;,1VIatrix Spike(0E01002-MSI) Source:W004632-01 Prepared&Analyzed:01-May-00 <br /> Benzene 0.620 0A050 mg/kg 0.800 ND 77.5 50-150 <br /> Toluene 0.666 0.0050 0.800 ND 83.2 50-150 <br /> 'Ethylbenzene 0,726 0,0050 0,800 ND 90.8 50-150 <br /> = Xylenes(totat) 2.17 0.0050 2.40 ND 90.4 50-150 <br /> (Surrogate:a,a,a-Triuorotoluene 0.590 " 0.600 98.3 40-140 <br /> j <br /> S�quoia Analytical-Walnut Creek The results in This report apply to the samples analyzed in accordance with the chain of <br /> custody docwnent. This analytical report wusl be reproduced in Av entirety. <br /> Page 22 of 28 <br />