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I <br /> Harding Lawson A"odWm <br /> from the sump area to the treatment compound as well, for future <br /> groundwater extraction possibilities. The five 2-inch vapor <br /> conduits will be manifolded to a 4-inch common PVC vapor conduit <br /> with ball-valves in between for flow control. The VES manifold <br /> will be connected to a water knock-out pot to prevent any <br /> ' moisture from entering the vacuum blower and carbon reactors. <br /> The water-knock out pot will be joined to the vacuum blower which <br /> ' will be rated for the flow capacity of the trench and tank pit <br /> laterals. The exhaust of the blower will pass through two carbon <br /> adsorption reactors connected in series before being discharged <br /> to the atmosphere. Soil vapor extraction and treatment <br /> operations will be conducted in accordance with the San Joaquin <br /> Valley Unified Air Pollution Control District. <br /> I <br /> It is anticipated that the proposed VES will have an initial <br /> ' yield of approximately 150 standard cubic feet per minute (SCFM) <br /> at a concentration of 101000 mg/M3 . As the operation continues, <br /> the soil matrix is expected to dehydrate and should yield a <br /> ' slightly higher flow rate. After the first week of operation, <br /> vapor concentrations are expected to decrease significantly and <br /> rmay be reduced to as little as 2 , 000 mg/M3 <br /> �1 <br /> I' <br /> �r <br /> �� 24 <br />