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GeoA:na t1ca1 Laborator <br /> y .,iesInc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone(209) 572-0900 Fax (209)572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# P122-12 Oxygenates Date: 5/09/03 <br /> I� <br /> Thorpe Oil Project: Thorpe's Yard ! Date Recd: 5/02/03 <br /> PO Box 357 } Date Started: 5/06/03 <br /> �! Date Completed:5/06/03 <br /> Lodi CA 95241 PO# # <br /> i Date Sampled: 5/02/03 <br /> Sampler: R.Azevedo(Geo) <br /> Sam Lab ID RL Method Analyte Results Units f <br /> M <br /> Dispenser#6 @ 3' P200655 10 8260B Methyl tert-b a tyl ether(MTBE) 17 µg/Kg <br /> 400 Ethanol j{ ND <br /> 200 tert-Butanol .r 222 <br /> 10 di-Isopropyl ether(DIPS) ND 4 <br /> 10 Ethyl tent-butyl ether(ETBE) ND f <br /> 10 tert-Amyl me ethyl ether(TAME) ND <br /> Surrogate Amnt Spiked Amnt Rec. %Recovery QC Limit% <br /> 1,2-Dichloroethane-d4 20 21.5 107.5 66-133 <br /> iJ 2-Bromo-l-chloropropane 20 24.4 122.0 63-139 <br /> 4-Bromofluorobenzene 20 18.0 90.0 64-136 <br /> 1 8260B Methyl tert-butyl 1 ether BE ND Ag/Kg � <br /> Dispenser#7®4' P200656 0 y ty (MTBE) <br /> 400 Ethanol ND <br /> 200 tart-Butanol �} F ND <br /> 10 di-Isopropyl ether(DIPS) ND <br /> 10 Ethyl tert-butyl ether(ETBE) ND <br /> 10 tert-Amyl methyl ether(TAME) ND <br /> Surrogate Amnt Spiked Amnt Rec. %Recovery QC Limit% <br /> 1,2-Dichloroethane-d4 20 21.5 107.5 66-133 <br /> 2-Bromo-1-chloropropane 20 '" 23.7 118.5 63-139 i <br /> 4-Bromofluorobenzene 20 18.7 93.5 64-136 <br />• ii <br /> Line Sample#4®4' P200657 10 8260B Methyl tert-butyl ether(MTBE) ND ug/Kg <br /> 400 Ethanol j ND t <br /> 200 tert-Butanol' ND <br /> 10 di-Isopropyl`ether(DIPE) ND <br /> 10 Ethyl tert-butyl ether(ETBE) ND <br /> 10 tert-Amyl me yl ether(TAME) ND <br /> Surrogate Amnt Spiked :I Amnt Rec. %Recovery QC Limit% <br /> 1,2-Dichloroethane-d4 i20 21.7 108.5 66-133 <br /> 2-Bromo-l-chloropropane 1'20 27.4 137.0 63-139 <br /> 4-Bromofluorobenzene :"20 17.0 85.4 64-136 <br /> I <br /> r � <br /> Mario D'OnofrioC' <br /> Donna Keller <br /> �I �I Director l <br /> Chemist Certification #�1157 Laboratory <br /> C � <br />