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819 Striker Avenue,Suite 8 <br /> SequoiaSacramento,CA 95834 <br /> Analytical (916)921-9600 <br /> -� FAX(916)921-0100 <br /> wwwsequoialabsxc :m <br /> Delta Environmental COnSultants(Cameron Park) Project: Arco 6100,Tracy,CA s <br /> 3330 Cameron Park Dr.Ste 550 Project Number: N/A Reported: r <br /> Cameron Park CA,95682 Project Manager. Jay Johnson 09/20/01 11:31 <br /> S <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 Notesj <br />' Batch 1090111-EPA 5030B(McOH) _ <br /> E Blank 1090111-BLK1) Prepared&Analyzed:09/11/01 <br /> I Purgeable Hydrocarbons ND 5.0 mg/kg <br /> Bcnzcnc ND 0.025 <br /> Toluene ND 0.025 <br /> Ethylbenzene ND 0.025 " <br /> Xylenes(total) ND 0.025 " <br /> i <br /> Surrogate:a,a,a-Trifluorotoluene 1.09 1.00 109 60-140 k <br />€ LCS(I090111-BSI) -- Prepared&Analyze_d_09/11101 <br /> Benzene 1.10 0.025 mg/kg 1.00 110 70-130 ` <br /> Toluene 1.05 0.025 1.00 105 70-130 I{ <br />{ Ethylbenzene 1.08 0.025 1.00 108 70-130 <br /> Xylenes(total) 3.12 0.025 3.00 104 70-130 <br /> Surrogate:a,a,a-Trifluorotoluene 1.07 1.00 107 60-140 <br /> Matrix_Spike(1090_111_-MSI) Source:S109102-07 Prepared&_Analyzed:09/11/01 <br /> Benzene 1.01 0.025 mg/kg 1.00 - ND 101 60-140 <br /> 1 Toluene 0.987 0.025 1.00 ND 98.7 60-140 <br /> Ethylbenzene 1.03 0.025 1.00 ND 103 60-140 <br /> Xylenes(total) 2.98 0.025 3.00 ND 99.3 60-140 <br /> Surrogate:a,a,a-Trifluorotoluene 1.12 1.00 112 60-140 j <br /> I <br /> Matrix Spike Du 1090111-MSD1 Source:5109102-07 Prepared&Anal zed:09/11/01 <br /> Benzene 0.961 0.025 mg/kg 1.00 ND 96.1 60-140 4.97 25 <br /> Toluene 0.947 0.025 1.00 ND 94.7 60-140 4.14 25 <br /> Ethylbenzene 0.986 0.025 1.00 ND 98.6 60-140 4.37 25 <br /> Xylenes(total) 2.88 0.025 3.00 ND 96.0 60-140 3.41 25 <br /> iSurrogate:a,a,a-Triuorotoluene 1.02 1.00 102 60-140 <br /> i <br /> k <br />' I <br /> 4 <br /> f <br /> ---,Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document. This analytical report must he reproduced in its entirety. <br /> I - <br /> i <br /> -Page Page 17 of 24 <br /> e <br />