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1 <br /> Working To Restore Nature <br /> monitoring points The highest observation well vacuum reading was recorded at 0.51 inches <br /> H2O from well VW-5s while extracting 78 3 acfm at 2 7 inches H2O from well VW-1. <br /> The VET conducted on vapor extraction well VW-5d had applied vacuum levels ranging from <br /> 22.9 to 36 1 inches H2O, and air flow rates ranging from 191 4 to 226.6 acfm. Response <br /> vacuums were recorded for each of the monitoring points. The highest observation well vacuum <br /> ' reading was recorded at 0 31 inches H2O from well VW-2d while extracting 217 5 acfm at 35.8 <br /> inches H2O from well VW-5d. <br /> 1 <br /> The high reported flow rates extracted from well VW-5d exceeded the maximum capabilities of <br /> ' IC engine indicating that the flow measuring devices were not functioning properly or were <br /> inappropriate for the application. On October 10, 1994 RESNA conducted a third VET with <br /> ' an IC engine to obtain accurate flowrate data Flowrates were measured with an averaging pitot <br /> tube and with an anemometer. The results of this third VET are summarized in Table 2C <br /> i <br /> The VET conducted on VW-1 at applied vacuums of 2 0 inches H2O again resulted in <br /> observation well vacuums of 0.5 inches H2O recorded from well VW-5s However, recorded <br /> air flow rates ranged from only 410 to 42.1 cfm. <br /> The short term VET conducted on VW-5d at applied vacuums of 112 inches H2O resulted in <br /> observation well vacuums up to 1.0 inch H2O in well VW-2d Recorded air flow rates ranged <br /> ' from 10.0 to 10.7 cfm. <br /> ' 3.1.3 Conclusions <br /> ' Utilizing the vacuum and distance measurements obtained during the VETs, an effective radius <br /> of influence can be estimated for the site. The effective radius of influence is defined as the <br /> ' radial distance from a vapor extraction well within which recorded vacuum levels indicate that <br /> 38004-8\38009-8 FRP 7 <br /> 1 <br />