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COLUMBIA ANALYTICAL SERVICES,INC <br /> Analytical Report <br /> Client EMCON Service Request 59900683 <br /> Protect Apache Plastics/22640-100 001 Date Collected 2/23/99 <br /> Sample Matrix Soil Date Received 3/2/99 <br /> Fuel Oxygenates <br /> SampleNanie B-1(74) Units ug/Kg(pph) <br /> Lab Code 59900683-007 Basis Wet <br /> Test Notes M 1 <br /> P1 ep Analysis Dilution Date Date Result <br /> Analyte Method Method MRL Factor Extracted Analyzed Result Notes <br /> tent-Butyl Alcohol NONE 8260 300 50 3/4199 3/4/99 <25000 <br /> Methyl Cert-Butyl Ether NONE 8260 5 50 3/4199 3/4/99 <250 <br /> Dusopropyl Ether NONE 8260 50 50 314/99 3/4199 <2500 <br /> Ethyl tent-Butyl Ether NONE 8260 50 50 3/4199 3/4/99 <2500 <br /> tert-Amyl Methyl lather NONE 8260 50 50 3/4/99 3/4/99 <2500 <br /> Ethanol NONE 8260 5000 50 3/4/99 314/99 <250000 <br /> • <br /> M1 The MRL was elevated because of matrix interferences <br /> The sample contained high cocentrations of petroleum hydrocarbons <br /> 1S441921397P <br /> Page 5 <br />