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Treatment System <br /> The process flow diagram for the Treatment System is shown in Drawing <br /> P-2. The Treatment System consists of five subsystems. These are: <br /> • Vapor/Liquid Separation Subsystem; <br /> • High Vacuum Extraction Pump Subsystem; <br /> • Vapor Treatment Subsystem; <br /> • Oil/Water Separator Subsystem; and <br /> • Ground Water Treatment Subsystem. <br /> Each of these subsystems is described below. <br /> Vapor/Liquid Separator Subsystem <br /> Following extraction, the vapor/liquid stream is routed to the <br /> vapor/liquid separator subsystem. There are three effluent process <br /> streams from the Vapor/Liquid Separator Subsystem. These are: <br /> • Vapor Stream. This stream is composed of soil vapor extracted <br /> from the vadose zone, and VOCs stripped from ground water <br /> within the extraction tube. The vapor stream is routed to the high <br /> vacuum extraction pump subsystem. <br /> • Liquid Stream. The liquid stream is composed of ground water <br /> and floating product. The liquid stream is routed to the oil/water <br /> separator subsystem. <br /> Liquids (consisting of ground water, suspended solids and floating <br /> product) will be processed through the vapor/liquid separator subsystem <br /> at a rate of approximately 20 gpm and transferred to the oil/water <br /> separator subsystem. At the vapor/liquid separator subsystem, vapor <br /> and liquid flow into the vapor/liquid separator tank. At this tank, <br /> residence time is provided such that liquid settles to the bottom of the <br /> vapor liquid separator tank by gravity. Vapor flows out of the top of the <br /> vapor liquid separator tank to the high vacuum extraction pump <br /> subsystem under the influence of the high vacuum pump. Because the <br /> vapor/liquid separator tank will be under an applied vacuum of 20 inches <br /> 5-4 <br />