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�- <br /> 2 <br /> ,lob No. 00770 page: <br /> pROC�EDLTRS <br /> A portable skid containing a vacuum pump, flowmeters, and <br /> vacuum gauges was delivered to the site. A rigid vacuum <br /> line was connected to each exisi-ing extraction well and a <br /> set volume of air was pumpea from the well. The capture <br /> radius was noted by recording the vacuum iinches of water <br /> r_ <br /> 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 /> results of the testing. <br /> The effluent <br /> Table 1 indicates the <br /> " <br /> gh two cylinders <br /> from the extraction wells wac routed throu <br /> Connected in series, each containing 200 pounds of vapor <br /> p <br /> hose activated carbon. This prevented any uncontrolled <br /> discharges of volatile organic vapors into the atmosphere. <br /> QUALITY ASSURANCE AND UALITY C014TROL <br /> ed on all threaded joints to prevent <br /> Teflon sealant was us <br /> g the pumping operation. <br /> any vacuum loss durin <br /> Vacuum pump flow rate and pressures were routinely checked <br /> - - again_ manufacturer-'s performance charts to insure maximum <br />