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. 05/28/2003 13:36 2095726 GEO * } PAGE 04/20 <br /> GeoAnalyti.cal Laboratories, Inc. <br /> 14.05 Kansas Avenue Modesto,CA 95351 Phone (209)572-0900 Fax (209)572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# P143-11 Oxygenates Date: 5/28/03 <br /> Date Re<'d: 5/23/03 <br /> Dortbm Pump Co. Proiett: Soil Sampling- (Card Lock) Stockton Date Started: 5/27/03 <br /> P.O.Box 276 Date Completeds/27/03 <br /> Ceres CA 95307 PO# <br /> Date Sampled: 5/23/03 <br /> Sampler. R.Acevedo(Geo) <br /> Sample ID Lab ID RL Method Analyte Results Units <br /> Soil Sample #702' P200868 10 8260B Methyl tertbutyl ether(MTBE) ND ug/Kg <br /> 400 Ethanol ND <br /> 200 Cert-Butanol ND <br /> 10 di-Laopropyl ether(DIPS) ND <br /> 10 Ethyl telt butyl ether(ETBE) ND <br /> 10 Cert-Amyl methyl ether(T,AAM) ND <br /> Surrogate Amnt Spiked Amnt Rec. ^/n Recovery QC Wilt-- <br /> 1,2-0ich1oroetharte-d6 20 21.5 107.50 66-133 <br /> a-Bromo-i-chl,oropropane 20 24.8 1.24-M 63-139 <br /> 4-Bromofluorabenzene 20 19.9 99.00 64-136 <br /> Soil Sample #892' P200869 1.0 8260B Methyl tort-butyl ether(MTBE) ND jig/Kg <br /> 400 Ethanol ND <br /> 200 tert-Butanol ND <br /> 10 di-Isopropyl ether(DIPE) ND <br /> 10 Ethyl tart butyl ether(E'i'BE) ND <br /> 1.0 tent-Arnyl.methyl ether(TAME) ND <br /> Surrogate Amnt Spiked Amnt ltce. %Recovery QC Limit% <br /> 1,2-0ich1orocthane-d4 20 24.3 121-563 66-M <br /> 2-B.ro,m.o-1-chlompropane 20 2$.9 144.50 63-139 <br /> 4-Bromotluorobemene 20 24.2 121.00 64-136 <br /> Soil Sample #9 62' P200870 10 8260E Methyl Cert-butyl ether(MTBE) ND µg/Kg <br /> 400 Ethanol ND <br /> 200 tent-Butanol ND <br /> 10 di-Isopropyl ether(DIPE) ND <br /> 10 Ethyl Cert-butyl ether(ETBE) ND <br /> 10 tort-Amyl methyl ether(TAME) NU <br /> Surrogate Amnt Spiked Amnt Rec. %Reeove q QC Lieut% <br /> 1,2-Disl,loroethane-dA 20 1.8.1 90.50 66.133 <br /> 2-Bromo-1-61oropropanc 20 21.6 108.00 63-139 <br /> 4-Bmmoflvorcben7enc 20 19.6 98.00 64-131 <br /> fc-q-c' <br /> rio Diorwho Donna Keller <br /> Chemist Certification# 1157 T.aboratory Director <br />