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i <br /> Geonalytical Laboratories,nc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone(209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# N100-11 Oxygenates Date: 4/15/02 <br /> Thorpe Oil Date Recd: 4/10/02 <br /> P Project: Stockton Fire Station-Sonora St. Date Started: 4/11/02 <br /> l <br /> PO Box 357 Date Completed:4/12/02 <br /> Lodi CA 95241 pp# <br /> Date Sampled:. 4/10/02 <br /> Sampler: R.Chrun/R.Azevedo <br /> Sample ID Lab ID RL Method Analyte Results Units <br /> Soil Sample#3 North04' N200886 10 8260B Methyl tert-butyl ether (MTBE) ND pg/Kg <br /> 400 Ethanol ND <br /> 200 terf-Butanol ND <br /> 10 di-Isopropyl ether(DIPS) ND i <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 4'o <br /> 1,2-Dichloroethane-d4 20 24.7 123,5 66-133 <br /> 2-Bromo-l-chloropropane 20 19.9 99.5 63-139 <br /> 4-Bromoguorobenzene 20 18.2 91 64-136 <br /> I <br /> I <br /> Soil Sample#2 North@4' N200887. 10 8260B Methyl Cert-butyl ether(MTBE) ND pg/Kg <br /> 400 Ethanol ND <br /> 200 tert-Butanol ND <br /> 10 di-Isopropyl ether(DIPS) ND <br /> i <br /> 10 Ethyl tert-butyl ether(ETBE) ND <br /> 10 tert-Amyl methyl ether(TAME) ND <br /> Surrogate Amnt Spiked Amnt Rec. 0r6 Recovery QC Limit R6 <br /> 1,2-Dichloroethane-d4 20 23.2 116 66-133 <br /> 2-Bromo-l-chloropropane 20 20.9 104.5 63-139 <br /> 4-Bromofluorobenzene 20 17.0 85 64-136 <br /> Soil Sample#1.5 North@4' N200888 10 8260B Methyl tert-butyl ether(MTBE) ND pg/Kg <br /> 400 Ethanol ND <br /> 200 tert-Butanol 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 23.0 115 66-133 <br /> 2-Bromo-l-chloropropane 20 21.1 105.5 63-139 <br /> 4-Bromofluorobenzene 20 15.2 T76 64-136 <br /> i <br /> i <br /> I <br /> Mario D`Onofri Donna Keller <br /> Chemist Certification 0 1157 Laboratory Director <br />