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819 Striker Avenue,Suite 8 <br /> ✓ <br /> Sacramento,916 92 -96M <br /> Sequoia95834 <br /> (916)921-96M <br /> FAX(916)921-0100 <br /> www.sequolalaln.com <br /> AW Analytical <br /> Delta Environmental Consultants(Cameron Park) Project: Arco 5569 Stockton,CA <br /> Pro ect Number N/A Reported: <br /> 3330 Cameron Park Dc Ste 550 3 11/02/01 14:59 <br /> Cameron Park CA,95682 Project Manager: Jay Johnson <br /> Total Purgeable Hydrocarbon,BTEX and MTBE 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 1100360-EPA 5030B e0 <br /> Blank(1100360-BLK1) Prepared 8c Analyzed: 10/30/01 <br /> Purgeable Hydrocarbons ND 5.0 mg/kg <br /> Benzene ND 0.025 " <br /> Toluene ND 0.025 " <br /> Ethylbenzene ND 0.025 " <br /> Xylenes(total) ND 0.025 " <br /> Methyl ted-butyl ether ND 0.25. _ <br /> Surrogate:a.a,a-Trinuorotoluem 0.988 1.00 98.8 60-140 <br /> LCS(1100360-BSI)_ Prepared&Analyzed: 10/30/01 <br /> Benzene 1.03 0.025 mg/kg 1.00 103 70.13 <br /> Toluene 1.08 0.025 1.00 108 70.130 <br /> Ethylbenune 1.09 0.025 1.00 109 70-130 <br /> Xylenes(total) 3.00 0.025 3.00 100 70-130 <br /> Methyl tert-butyl ether 1.14 0.25 1.00 114 70-130 <br /> Surrogate.'a,a.a-Triuorotoluene 1.00 1.00 100 60-140 <br /> Matrix Spike 1100_36_0-MS1 Source:5110410-09 Prepared&Analyzed: 10/30/01 <br /> --- --- <br /> Benzene 0.939 0.025 mg/kg 1.00 ND 93.9 60.140 <br /> Toluene 0.998 0.025 1.00 ND 99.8 60-140 <br /> Ethylbenzene 1.02 0.025 1.00 ND 102 60-140 <br /> Xylenes(total) _ 2.88 0.025 3.00 ND 96.0 60-140 <br /> Methyl tert-butyl ether 1.02 0.25 1.00 ND 102 60-140 <br /> Surrogate:a,aa-Trinuorotoluene 0.935 1.00 93.5 60.140 <br /> Matrix Spike Dup(1100360-MSD _ Source: S110410-09 Prepared&Analyzed: 10/30/01 <br /> Benzene 0.960 0.025 mg/kg 1.00 ND 96.0 60-140 2.21 25 <br /> Toluene 1.02 0.025 1.00 ND 102 60.140 2.18 25 <br /> Ethylbenzene 1.04 0.025 1.00 ND 104 60-140 1.94 25 <br /> Xylenes(total) 2.91 0.025 3.00 ND 97.0 60-140 1.04 25 <br /> Methyl tert-butyl ether 1.01 0.25 1.00 ND 101 60-140 0.985 25 <br /> Surrogate:a,qa-Trifluororoluem 0.986 _ 1.00 98.6 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 12 of 14 <br /> `rte <br />