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9 <br /> 6 0 SOIL VAPOR EXTRACTION PILOT TESTING <br /> Canonie performed a soil vapor extraction (SVE) pilot test on Wells W-1 , W-2, and <br /> W-3 to determine whether this technology would be a viable remedial alternative for <br /> the Site Canonie used its portable SVE system, which extracts the soil vapor under <br /> a vacuum and treats the air stream with granular-activated carbon (GAC) before <br /> discharging it to the atmosphere, for the pilot testing Prior to performing the pilot <br /> test, approval was received from the San Joaquin Unified Air Pollution Control District <br /> 6 1 Pilot Testing Procedures <br /> The SVE system components consisted of a Reitschle VFT-180 carbon vane vacuum <br /> pump, a 200-pound GAC vessel, ancillary piping, control panels, and a self-contained <br /> lighting system, all of which were mounted on a portable single-axle trailer The SVE <br /> system is capable of extracting air at a flow rate of 127 standard cubic feet per <br /> minute (scfm) and maintaining a vacuum of 28 inches of mercury A portable <br /> generator is used to supply power to the system Various instruments, including air <br /> flow meters and vacuum and temperature gauges, allowed Canonie personnel to <br /> guarantee safe operation of the SVE system while maintaining a high extraction <br /> performance <br /> ' W-2 and W-3 were tested for 30 minutes to determine their performance <br /> characteristics However, Well W-1 was only tested for 25 minutes because of <br /> chemical breakthrough of the GAC vessel The SVE system was connected to the <br /> extraction well using a flexible vacuum-rated vinyl hose with CAM fittings The vapor <br /> W 191 6341RFP0RTS%SITE ASSII OCKFFOROSLOCKE FORD RPT !April 26 79931 Canonlehi Y !rorr t 1 ietAa� <br />