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�,/ 819 Striker Avenue,Suite 8 <br /> �1 Sequoia <br /> Sacramento,916 CA95834 <br /> -96M <br /> (916)921-9600 <br /> FAX(916)921-0100 <br /> 4QF Analytical www.sequolalaba.com <br /> Delta Environmental Consultants(Cameron Park) Project: Arco 5569 Stockton,CA <br /> 3330 Cameron Park Dr.Ste 550 ProjectNumber: N/A Reported: <br /> Cameron Park CA,95682 Projea Manager: Jay Johnson 11/02/01 14:59 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT -Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %RFC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit NO[es <br /> Batch 1100357 EPA 5030B(MeO1d) <br /> Blank(1100357-BLK1) Prepared&Analyzed: 10/29/01 <br /> Purgeable Hydrocarbons ND 5.0 mg/kg <br /> Benune ND 0.025 " <br /> Toluene ND 0.025 " <br /> Ethylbenzene ND 0.025 <br /> Xylenes(total) ND 0.025 " <br /> Methyl ten-butyl ether ND 0.25 <br /> Surrogate.'a,a,a-Triuorololuene 1.01 1.00 101 60-140 <br /> LCS(1100357-BSI) __ Prepared&Analyzed: 10/29/01 <br /> Benzene 1.03 0.025 mg/kg 1.00 103 70-130 <br /> Toluene 1.09 0.025 1.00 109 70-130 <br /> Ethylbenzene 1.09 0.025 1.00 109 70-130 <br /> Xylenes(total) 3.04 0.025 3.00 101 70-130 <br /> Methyl ten-butyl ether 1.22 025 1.00 122 70-130 <br /> Surrogate:a,a,o-Triuorotoluene 1.04 1.00 104 60-140 <br /> Matrix�S tike(11_00.35_7-MS1) __ Source:S110346-01 Prepared&Analyzed: 10/29/01 <br /> Benune 0.976 0.025 mg/kg 1.00 ND 97.6 60.140 <br /> Toluene 1.02 0.025 1.00 ND 102 60-140 <br /> Ethylbenzene 1.03 0.025 1.00 ND 103 60-140 <br /> Xylenes(total) 2.86 0.025 3.00 ND 95.3 60-140 <br /> Methyl ten-butyl ether 1.13 0.25 1.00 ND 113 60-140 <br /> Surrogate:a,a,a-Triuorotoluene 0.981 1.00 98.1 60-140 <br /> Matrix Spike Dup(1100357-MSDl) Source:S110346-01 Prepared&Analyzed: 10/29/01 <br /> Benzene 0.929 0.025 mg/kg 1.00 ND 92.9 60-140 4.93 25 <br /> Toluene 1.00 0.025 1.00 ND 100 60-140 1.98 25 <br /> Ethylbenune 1.01 0.025 1.00 ND 101 60-140 1.96 25 <br /> Xylenes(total) 2.81 0.025 3.00 ND 93.7 60-140 1.76 25 <br /> Methyl ten-butyi ether 1.14 0.25 1.00 ND 114 60-140 0:881__ 29 <br /> Surrogate:a,a,a-Triuorotolvene 0.979 1.00 97.9 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 11 of 14 <br />