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Hg, a progressive cavity pump will be utilized to transfer this liquid <br /> stream. <br /> High Vacuum Extraction Pump Subsystem <br /> The high vacuum extraction pump subsystem provides the vacuum for <br /> extraction of soil gas and/or ground water from dual phase extraction <br /> wells and SVE wells. This subsystem includes a high vacuum oil ring <br /> pump, a seal fluid tank, and a heat exchanger. The high vacuum <br /> extraction pump subsystem is placed downstream of the vapor/liquid <br /> separator subsystem to allow for upstream removal of soil particulates <br /> which could damage the oil ring pump. <br /> The oil ring pump will provide approximately 20 inches Hg for the <br /> simultaneous extraction of vapor and liquid at dual phase extraction <br /> wells. The high vacuum extraction pump subsystem also includes a <br /> combination seal fluid and moisture knockout pot to remove any water <br /> entrained in the vapor stream prior to routing of the vapor stream to the <br /> vapor treatment subsystem. <br /> Vapor Treatment Subsystem <br /> Vapor effluent from the high vacuum extraction pump subsystem is <br /> routed to the vapor treatment subsystem. Additionally, vapor effluent <br /> removed from ground water at the ground water treatment subsystem is <br /> transferred to the vapor treatment subsystem as well as soil vapor from <br /> the SVE wells. The combined influent design vapor flow rate to this <br /> subsystem is 225 scfm. <br /> At the vapor treatment subsystem, organic compounds in the vapor <br /> stream are destroyed via catalytic oxidation. The catalytic oxidizer is <br /> expected to be designed for a greater than 95 percent destruction and <br /> removal efficiency (>95 percent DRE). Following the destruction of VOCs <br /> in the vapor stream, the treated vapor will be discharged to the <br /> atmosphere through a discharge stack. <br /> Oil/Water Separator Subsystem <br /> The liquid effluent stream from the vapor/liquid separator subsystem is <br /> transferred to the oil/water separator subsystem, where floating product <br /> is separated from ground water. Settleable solids are also removed from <br /> the process stream at the oil/water separator. Extracted ground water <br /> 5-5 <br />