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819 Striker Avenue,Suite 8 ' <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> 140 Analytical FAX(916)921-0100 <br /> www.sequoialabs.com <br /> URS-Sac,Gateway Oaks Project: ARCO 760,Lodi,CA <br /> 2870 Gateway Oaks Dr.,Ste.300 Project Number: 760,Lodi,CA Reported: <br /> Sacramento CA,95833 Project Manager: Vernon Elarth 08/27/02 15:59 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT-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 2080197-EPA 5030B(MeOH) <br /> Blank(2080197-BLKI) Prepared&Analyzed:08/21/02 <br /> Purgeable Hydrocarbons ND 5.0 mg/kg <br /> Benzene ND 0.050 " <br /> Toluene ND 0.050 " <br /> Ethylbenzene ND 0.050 ' <br /> Xylenes(total) ND 0.050 " <br /> Surrogate:a,a,a-Trifluorotoluene 0.845 1.00 84 60-140 <br /> LCS(2080197-BSI) Prepared&Analyzed:08/21/02 ' <br /> Benzene 0.810 0.050 mg/kg 1.00 81 70-130 <br /> Toluene 1.01 0.050 1.00 101 70-130 <br /> Ethylbenzene 1.16 0.050 1.00 116 70-130 <br /> Xylenes(total) 3.33 0.050 3.00 111 70-130 , <br /> Surrogate:a,a,a-Trifluorotoluene 0.868 1.00 87 60-140 <br /> LCS Dup(2080197-BSDI) Prepared&Analyzed:08/21/02 <br /> Benzene 0.705 0.050 mg/kg 1.00 70 70-130 14 25 <br /> Toluene 0.887 0.050 1.00 89 70-130 13 25 <br /> Ethylbenzene - 1.00 0.050 1.00 100 70-130 15 25 <br /> Xylenes(total) 2.93 0.050 3.00 98 70-130 13 25 <br /> Surrogate:a,a,a-Trifluorotoluene 0.783 1.00 78 60-140 <br /> Batch 2080205-EPA 5030B(P/T) ' <br /> Blank(2080205-BLKI) Prepared&Analyzed:08/21/02 <br /> Purgeable Hydrocarbons ND 0.50 mg/kg <br /> Benzene ND 0.0050 <br /> Toluene ND 0.0050 " <br /> Ethylbenzene ND 0.0050 " <br /> Xylenes(total) ND 0.0050 <br /> Surrogate:a,a,a-Trifluorotoluene 0.0173 0.0200 87 60-140 <br /> Sequoia Analytical-Sacramento The results in this report 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 Page 9 of 14 <br />