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819 Stoker Avenue,Suite 8 <br /> Sequoia Sacrarriento,CA 99600 <br /> (9t6)921-9600 <br /> FAX(916)92 1-0100 <br /> Analytical �.seguolalabs.com <br /> Stratus Environmental Project ARCO 434,Lodi,CA <br /> 3330 Cameron Park Drive,Ste.550 Project Number: 434,Lodi,CA Reported: <br /> Cameron Park CA,95682 Project Manager. Jay Johnson 08/22/02 14:25 <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 2080168-EPA 5030B(P/') <br /> Blank(2080168-BLS Prepared&Analyzed:08/16/02 <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-M ltwrotoluen t 0.0174 0.0200 87 60-140 <br /> LCS(2080168-BSI) Prepared&Analyzed:08/16/02 <br /> Benzene 0.0167 0.0050 mgfkg 0.0200 84 70-130 <br /> Toluene 0.0179 0.0050 0.0200 90 70-130 <br /> Ethylbenzene 0.0189 0.0050 0.0200 94 70-130 <br /> Xylenes(total) 0.0580 0.0050 " 0.0600 97 70-130 <br /> Surrogate:a,a,a-Trifluorotoluene 0.0172 0.0200 86 60-140 <br /> Batch 2080179-EPA 5030B(P/1) <br /> Blank(2080179-BLKI) Prepared&Analyzed:08/19/02 <br /> Purgeable Hydrocarbons ND 0.50 mg/kg - <br /> Benzene ND 0.0050 " <br /> Toluene ND 0.0050 " <br /> Bthy%emeene ND 0.0050 " <br /> Xylenes(total) ND 0.0050 " <br /> Surrogate:a,a,a-Tris luorotoluene 0.0184 0.0200 92 60-140 <br /> LCS(2080179-BSI) Prepared&Analyzed:08/19/02 <br /> Benzene 0.0166 0.0050 mg/kg 0.0200 83 70-130 <br /> Toluene 0.0184 0.0050 0.0200 92 70-130 <br /> Ethylbenzene 0.0192 0.0050 0.0200 - 96 70-130 <br /> Xylenes(total) 0.0592 0.0050 0.0600 99 70-130 <br /> Surrogate:a,a,a-TriiluorotoGtene 0.0174 0.0100 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 7 of 11 <br />