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KLEINFELDER <br /> During the sparging of the shallowsparge well the inflection point <br /> yp measured in MW-1 was 82 <br /> feet bgs. The distance between MW-1 and the sparge well r is 15 feet, and the depth of the <br /> sparge point ds is 87 feet. The shape constant can then be estimated as: <br /> k = 87 ft -82 ft = 0.022ft-1 <br /> (15 ft) <br /> F <br /> With the shape constant, the radius of influence can then be calculated as that point where yp <br /> reaches the surface of the groundwater and can no longer travel laterally. The radius of influence <br /> j of the shallow nest, rs can than be expressed as: <br /> rs = <br /> F <br /> --Yp <br /> k <br /> At the Disco Site groundwater is currently at approximately 45 feet bgs, therefore the radius of <br /> influence can be estimated as: <br /> r _ 87 ft —45 ft _ 43 feet <br /> S 0.022 ft-1 <br /> i <br /> Similarly the radius of influence of the deep nest rd can be estimated as: <br /> r _ 137 ft—45 ft = 64 feet <br /> — 0.022 ft-' <br /> t Therefore, based on the results of the bubble flux test, the radius of the shallow and deep sparge <br /> well are approximately 43 feet and 64 feet, respectively. <br /> i <br /> I <br /> 2.2 OXYGEN RESPONSE TESTING AND DELIVERY EVALUATION <br /> Kleinfelder evaluated the oxygen delivery dynamics of air sparging at the Disco Site by <br /> measuring the change in dissolved oxygen concentrations in nearby monitoring wells SVE-S and <br /> 122801SAC2R566 Page 4 of 9 November 25,2002 <br /> Copyright 2002 Kleinfelder,Inc. <br /> t <br />