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GeoPnalyfical Laboratories.tc. <br />1405 Kansas Avenue Modesto, CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br />CERTIFICATE OF ANALYSIS <br />Report# P122-12 BTEX & Gas Date: 5/09/03 <br />Thorpe Oil Project: Thorpe's Yard <br />PO Box 357 <br />Lodi CA 95241 PO# <br />Date Recd: 5/02/03 <br />Date Started: 5/07/03 <br />Date Completed:5/07/03 <br />Mario D'Onofrio <br />Chemist <br />Certification # 1157 <br />1 <br />Donna Keller <br />Laboratory Director <br />Date Sampled: <br />5/02/03 <br />Sampler: R. Azevedo (Geo) <br />Sample ID <br />Lab ID <br />RL Method <br />Analyte <br />Results <br />Units <br />Dispenser #1 @ 4' <br />P200653 <br />5.0 8021B <br />Benzene <br />ND <br />µg/Kg <br />5.0 <br />Toluene <br />ND <br />µg/Kg <br />5.0 <br />Ethyl Benzene <br />ND <br />µg/Kg <br />5.0 <br />Total Xylenes <br />ND <br />µg/Kg <br />1.0 5030/LUFT <br />Gasoline <br />ND <br />mg/Kg <br />Surrogate <br />Amnt Spiked <br />Amnt Rec. % Recovery <br />QC Limit % <br />a,a,a-TFT <br />250 <br />250 100.0 <br />66-117 <br />Dispenser #5 @ 3' <br />P200654 <br />5.0 8021B <br />Benzene <br />ND <br />µg/Kg <br />5.0 <br />Toluene <br />ND <br />µg/Kg <br />5.0 <br />Ethyl Benzene <br />ND <br />µg/Kg <br />5.0 <br />Total Xylenes <br />ND <br />µg/Kg <br />1.0 5030 / LUFT <br />Gasoline <br />ND <br />mg/Kg <br />Surrogate <br />Amnt Spiked <br />Amnt Rec. % Recovery <br />QC Limit % <br />a,a,a-TFT <br />250 <br />235 94.0 <br />66-117 <br />Dispenser #6 @ 3' <br />P200655 <br />5.0 8021B <br />Benzene <br />ND <br />µg/Kg <br />5.0 <br />Toluene <br />ND <br />µg/Kg <br />5.0 <br />Ethyl Benzene <br />ND <br />µg/Kg <br />5.0 <br />Total Xylenes <br />ND <br />µg/Kg <br />1.0 5030/LUFT <br />Gasoline <br />ND <br />mg/Kg <br />Surrogate <br />Amnt Spiked <br />Amnt Rec. % Recovery <br />QC Limit % <br />a,a,a-TFT <br />250 <br />234 93.6 <br />66-117 <br />Mario D'Onofrio <br />Chemist <br />Certification # 1157 <br />1 <br />Donna Keller <br />Laboratory Director <br />