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7.3.1 Soil Vapor Extraction Pilot Testing <br /> Typical well completion diagrams for the shallow SVE wells and deep SVE wells are provided in <br /> Figures 13 and 14, respectively. <br /> SVE pilot testing will be conducted for each of the shallow and deep wells. Each SVE well will <br /> be considered as a pilot test for its area of placement (Area A, B, C and Concrete Tank) since <br /> there is only one SVE well (shallow and deep) for each of the four areas of investigation. A total <br /> of eight tests will be conducted. Consequently, during each test one SVE well will provide an <br /> extraction test well with the other wells at that screened depth interval being used as observation <br /> wells. Temporary surface laid 2-inch diameter flexible PVC piping will provide routing for <br /> extracted vapor from each wellhead to the extraction site. <br /> The observation wells will be plumbed with a vacuum gauge for measurements during pilot <br /> testing. In addition, the extraction well will contain in-line tee fittings for connecting gauges <br /> and collecting vapor samples. Each well will have a valve for controlling vapor flow rates. <br /> The SVE pilot test system will be located in the southern portion of the LNC site where 220 volt <br /> electrical power is available. Surface piping from each test well will be routed to a trunk line <br /> running to a manifold located at the pilot test equipment(blower, air compressor, carbon <br /> canisters, water knockout pot, and appurtenances). <br /> The SVE test equipment will consist of a Rotron 250 blower capable of providing a maximum of <br /> 160 SCFM of air displacement. This unit will be equipped with a variable flow system allowing <br /> the blower to extract between 10 and 160 standard cubic feet per minute (SCFM) at vacuums <br /> ranging from 1 inch to 15 inches of water. The equipment will be placed in a containment <br /> structure that will consist of a liquid separator, float switches and entrainment water pump, <br /> electrical control panel with main power switch and hour meter, vacuum pump and motor, eight <br /> (8) 200-pound granulated activated carbon(GAC) canisters (with two additional canisters in <br /> M ain\D:AEnvironmentaI\LN CV\10152007.wpd 51 <br />