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Analytical Results The results of OVA 128-GC monitoring of the concentration of gasoline vapors from the individual vapor extraction wells is presented in Table 1. The OVA 128-GC monitoring of the carbon reactors effluent is presented in Table 3, The OVA 128-GC cannot directly measure vapor concentrations of hydrocarbons greater than 1,000 ppm as methane. However, the instrument can be effectively used to monitor vapor concentrations above 1,000 ppm as methane if a volumetric dilution of the vapor stream is performed. This is accomplished by using a 1 liter tedlar bag filled with zero gas air and adding a 5 or 10 mL gas sample to the bag which is then a 200:1 or 100:1 diluted sample which can then be used to analyze samples of up to 200,000 ppm as methane. The contents are allowed to mix and are then are analyzed with the OVA to i obtain a vapor concentration of the diluted sample. Correction for the dilution is made by multiplying by the dilution factor. Table 4 presents the flows of the extracted well vapors by individual blowers in standard cubic feet per minute (SCFM) and vacuum in inches of water at the well head of each of the vapor extraction wells. Table 5 presens the initial vapor concentrations for all the wells utilized in the VES by SKC I carbon tube analysis. These data can be used to chart the progress of the remediation because the relative vapor concentrations are reflective of the quantity of gasoline remaining in the soils and groundwater. Analytical Laboratory results from the SKC carbon tube analyses are included in Appendix I. 5 VAPOR EXTRACTION TECHNOLOGY. INC.