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r I <br /> Geo nalytical LaboratoriesY- nc. <br /> 1405 Kansas Avenue Modesto, CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br /> i <br /> CERTIFICATE OF ANALYSIS <br /> Report# N100-11 Oxygenates Date: 4/15/02 <br /> Thorpe Oil Project: Stockton Fire Station-Sonora St. Date Rec'd: 4/10/02 <br /> PO Box 357 Date Started: 4/12/02 <br /> Lodi CA 95241 PO# <br /> Date Completed:4/12/02 <br /> � <br /> Date Sampled:. 4/10/02 <br /> Sampler: R.Chmn/R.Azevedo <br /> Sample ID Lab ID RL Method Analyte i y Results Units <br /> I Soil Sample#6 South@4' N200880 10 8260B Methyl tert-butyl ether (MTBE) ND lig/Kg t <br /> 400 Ethanol ND <br /> 200 tert-Butanol ND <br /> 10 di-Isopropyl ether(DIPE) ND <br /> 10 Ethyl tent-butyl ether(ETBE) ND <br /> 10 tert-Amyl methyl ether(TAME) ND <br /> Surrogate Amnt Spiked Arrint.Rec. %Recovery QC Limit 0/6 <br /> 1,2-Dichloroethane-d4 20 24.1 120.5 66-133 <br /> 2-Bromo-l-chloropropane 20 20.8 104 63-139 <br /> 4-Bromofluorobenzene 20 17.6 88 64-136 <br /> k <br /> Soil Sample 47 South@4' N200881 10 8260B Methyl tert-butyl ether(MTBE) ND lig/Kg <br /> 400 Ethanol ND <br /> 200 Cert-Butanol ND j <br /> 10 di-Isopropyl ether(DIPE) ND <br /> 10 Ethyl tert-butyl ether(ETBE) ND <br /> 10 tert-Amyl methyl ether(TAME) ND <br /> Surrogate Arnnt Spiked Amnt Rec. %Recovery QC Limit% <br /> 1,2-Dichloroethane-d4 20 18.1 90.5 66-133 <br /> 2-Bromo-l-chloropropane 20 19.7 98.5 63-139 <br /> I <br /> 4-Bromofluorobenzene 20 17.9 89.5 64-136 <br /> I <br /> Soil Sample#7 North@4' N200882 10 8260B Methyl tent-butyl ether{MTBE) ND lig/Kg <br /> 400 Ethanol ND <br /> 200 tert-Butanol ND <br /> 10 di-Isopropyl ether(DIPE) ND <br /> 10 Ethyl tert-butyl ether (ETBE) ND. <br /> 10 tert-Amyl methyl ether(TAME) NO <br /> Surrogate Amnt Spiked Amnt Rec. %Recovery QC Limit% <br /> 12-Dichloroethane-d4 20 23.6 118 66-133 <br /> 2-Bromo-l-chloropropane 20 21.7 108.5 63-139 <br /> 4-Bromofluorobenzene 20 16.4 82 64-136 <br /> I: <br /> gario D'Ono io Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br /> _x <br />