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FRIEDMAN &BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 09/29/99 <br /> Date Received: 09/27/99 <br /> Project: 5650 <br /> Date Extracted: 09/27/99 <br /> Date Analyzed: 09/27/99 <br /> RESULTS FROM THE ANALYSIS OF THE SOIL SAMPLE <br /> FOR FORENSIC EVALUATION <br /> BY CAPILLARY GAS CHROMATOGRAPHY <br /> USING A FLAME IONIZATION DETECTOR (FID) <br /> AND ELECTRON CAPTURE DETECTOR (ECD) <br /> Sample ID GC Characterization <br /> GMX-13-12.5 The GC trace using the flame ionization detector (FID) <br /> showed the presence of low boiling compounds. The <br /> patterns displayed by these peaks are due to the <br /> presence of a low boiling distillate such as gasoline. <br /> The low boiling compounds appeared as a pattern of <br /> peaks eluting from n-C6 to n-C13. These compounds <br /> boil in the range associated with gasoline. Absent is <br /> the pattern of aromatic hydrocarbons typical of recent <br /> gasoline. Their absence may indicate that the gasoline <br /> is highly degraded or else that the gasoline is of a <br /> formulation that is no longer in use. In addition, the <br /> apparent presence of biomarkers including pristane <br /> and phytane indicates that a small amount of a highly <br /> degraded middle distillate may be present. <br /> There is also evidence of low levels of a second product <br /> which boils as high as n-Clg. This material may be <br /> due to the presence of diesel fuel or heating oil. <br /> The large peak seen near 25 minutes on the GC/FID <br /> trace is pentacosane, added as a quality assurance <br /> check for this GC analysis. There is a second <br /> surrogate present that is seen on the GC/ECD trace at <br /> about 26 minutes which is dibutyl chlorendate. <br /> 1 <br />