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GeoArialytical Laboratories lnc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone (209) 572-0900 '!Fax(209)572-0916 <br /> I <br /> CERTIFICATE Of ANALYSIS <br /> Report# P122-12 BTEX & Gas Date: 5/09/ <br /> I <br /> Thor e Oil Project: Thorpe's Yard i <br /> Date Recd: 5/0 <br /> 03 f <br /> p Date Started: 5/00 <br /> ` PO Box 357 k <br /> Date Complete.d:5/07 03 <br /> Lodi CA 95241 PO# s <br /> Date Sampled: 5/02/Q3 <br /> Sampler: R.Azevedo(Geo) <br /> Sample ID Lab ID RL Method Analyte ' Results Units <br /> Dispenser#7 @ 4' P200656 5.0 8021B Benzene ND ug/Kg <br /> 5.0 'Toluene 4� ND kg/Kg I <br /> 5.0 Ethyl Benzene ` ND ttg/Kg <br /> 5.0 Total Xylenes 6 ND Ing/Kg <br /> 1.0 5030/LUFT Gasoline �} ND <br /> mg/Kg <br /> Amnt iked :k Amnt Rec. %Recovery i Surrogate p QC Limit% <br /> i <br /> a,a,a-TFT 1250 223 89.2 66-117 <br /> Line Sample#4 @ 4' P200657 5.0 8021B Benzene ND Ag/Kg <br /> 5.0 Toluene 11 ND kg/Kg I <br /> 5.0 Ethyl Benzene ND gg/Kg <br /> 5.0 Total Xylenes ND µg/Kg i <br /> 1.0 5030/LUFT Gasoline ! ND mg/Kg <br /> I <br /> Surrogate Amnt,Spiked Amnt Rec. %Recovery QC Limit% <br /> a,a,a-TFT 250 224 89.6 66-117 <br /> �I <br /> �E <br /> i I <br /> i <br /> Stock Pile#1,2,3,4,5,6 P200658, 5.0 8021B Benzene ND Ag/Kg <br /> P200659, 5.0 Toluene ND µg/Kg <br /> P200660, 5,0 Ethyl Benzene ND gg/Kg } <br /> P200661, 5 0 Total Xylenes ND ug/Kg <br /> P200663 1.0 5030/LUFT Gasoline ;} ND mg/Kg <br /> I <br /> Surrogate Amnt Spiked;ll Amnt Rec. %Recovery QC Limit% <br /> a,a,a-TFT 250 200 80.0 66-117 <br /> ISE � <br /> i{ I <br /> o I Var Ll <br /> Mario D'Onofrio Donna Keller j <br /> Chemist Certification #=1157.E 1 Laboratory Director <br />