Laserfiche WebLink
_IQ <br /> CUP F,C� <br /> N <br /> We <br /> NA <br /> MINE <br /> Job No. 00770 Page: 2 <br /> rr MC IDUNES <br /> rr A portable skid containing a vacuum pump, i_ meters, and <br /> vacuum gauges was delivered to the site. <br /> rigid vacuum <br /> line was connected to each existing extraction well and a <br /> set volume of air was pumped from the well. The capture <br /> radius was noted by recording the vacuum in inches of water <br /> ,J as seen in the other wells. This procedure was repeated at <br /> different flow rates and at different wells. The detection <br /> limit for the vacuum gradient was 0.01 inches of water. <br /> Table I indicates the results of the vesting. The effluent <br /> from the extraction wells was routed through two cylinders <br /> connected in series, each containing 200 pounds of vapor <br /> phase activated carbon. This prevented any uncontrolled <br /> discharges of volatile organic vapors into the atmosphere. <br /> i r <br /> ........... <br /> QUALITY ASSURANCE AND UALITY iOPMOIk <br /> 51",VIZ. <br /> Teflon sealant was used on all threaded joints to prevent <br /> a n,,,r vacuum loss during the pumping operation. <br /> Vacuum Pump flow rate and pressures were routinely checked <br /> ri against manufacturer's performance charts to insure maximum <br />