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P"a_ _s _ <br /> � �Tqa. <br />�•a <br /> a <br /> 10 foot from Well V3 in they diroctlon of Well V4. Thoon prober <br /> included clotted tips through which coil vapory, could be, camplod. <br /> At the surface, each probe vas equipped with a conaitive magnuhullc <br /> gaugo to ineaaur.c vacuum praaruro in the coil resulting from the <br /> m vacuum applitcd to Wall V3. In addition, a magnehc►lic garage vnc <br /> connected to Well V4, 22 forst from the Wa,l V3. A vacuum flow of <br /> _.... 22-30 cfm wau then applied to Wail V3. Vacuum (negative) <br /> pressure, as indicated by the response of the msgneholic gauges, <br /> was measured in three of the four Boil vapor probes at 5 and 10 <br /> feet tram the pumping well within one minute. The probe that was <br /> located 10 feet from the pumping well and driven to 25 feetdeep, <br /> did not Ghov a vacuum response. A vacuum waG alae measured in <br /> Well V4 after about two minutes of vacuum pump operation. A <br /> radius of vacuum Influences in the soil of at least 22 feat from <br /> the pumping Well V3 vac indicated. Thin radiuu of influences iG <br /> shown in Figure 9. <br /> c52/91918/txt 8 <br />