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Soil samples collected at depths of approximately 40, 50, and 60 feet bgs from boring VM-2 were analyzed for TPHg and BTEX These soil samples exhibited TPHg concentrations of 1 5, 20, and 10 mg/kg, respectively These soil samples also exhibited benzene concentrations of 0 35, 0 41, and 2 0 mg/kg, respectively Soil samples collected between the depths of 40 and 65 feet bgs in borings MW-25 and MW-26 were analyzed for TPHg, BTEX and MTBE TPHg, BTEX and MTBE were not reported above the test method detection limits in the soil samples analyzed Soil samples from the depths of 30 and 52 feet bgs in boring VM-1 were tested for bulk density, ' moisture content and organic carbon content Density ranged from 84 9 to 83 5 pounds per cubic foot, moisture content ranged from 17 8 to 19 8 percent and organic carbon content ranged from 478 to 735 mg/kg The physical properties test data is summarized on Table 5 34 Groundwater Analytical Results ' The concentrations of petroleum hydrocarbons in groundwater for the October 1996 sampling event are summarized on Table 3 and are depicted on Figure 5 ' 35 Vapor Extraction Pilot Test ' Field and laboratory analytical data from the VET is summarized on Table 4 During the VET, an extraction flowrate of 60 scfm and a vacuum of 50 inches H2O were maintained at extraction well VW-1 While extracting from VW-1 at 60 scfm, vacuum responses ranging from 2 25 to 2 5 inches H2O were observed approximately 20 feet away at VM-1 Vacuum responses ranged from 1 9 to 2 6 inches H2O at VM-2, which was located approximately 40 feet from VW-1 Concentrations of TPHg 1 vapor extracted from VW-1 ranged from 11,900 to 131,000 mg/m3 Copies of the laboratory reports and chain-of-custody documentation for the vapor samples obtained during the VET are presented in ' Appendix C ProjectNo 58100-06-18A -10- December 9, 1996