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GeoAnalytical Laboratories, Inc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone(209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# Q170-01 <br /> Date: 6/24/04 <br /> Date Recd: 6/18/04 <br /> Foothill Engineering Project: Date Started: 6/22/04 <br /> 12793 Paddy Creek Lane Date Completed-.6/23/04 <br /> Lodi CA 95240 PO# <br /> Date Sampled: 6/17/04 <br /> Sampler: <br /> Sample ID Lab ID RL Method Analyte Results Units <br /> GMX-1 Q304194 0.05 5030/LUFT Gasoline* 0.70 mg/L <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% <br /> a,a,a-TFT 25.0 34.9** 139.6 70-125 <br /> *Weathered <br /> **QC criteria not met due to high level of analvte concentration <br /> MW-2 Q304195 0.25 5030/LUFT Gasoline 2.9 mg/L <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% <br /> a,a,a-TFC 500 434 86.8 70-125 <br /> MW-3 Q304196 0.05 5030/LUFT Gasoline ND mg/L <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% <br /> a,a,a-TFT 25.0 21.3 85.2 70-125 <br /> MW-4 Q304197 0.05 5030/LUFT Gasoline ND mg/L <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% <br /> a,a,a-TFT 25.0 17.4 69.6 70-125 <br /> W� <br /> Mario D'Onofrio Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />