Consider the same situation as described in problem 16.6, except that two wells are used, an injection well and a pumping well. Again, apply potential flow theory to suggest possible locations for the...

Consider the same situation as described in problem 16.6, except that two wells are used, an injection well and a pumping well. Again, apply potential flow theory to suggest possible locations for the wells and estimate the time over which the pumping well still supplies fresh water.

problem 16.6

Consider an infinite aquifer with uniform flow velocity U and porosity
. A portion of the aquifer with width, b, measured in the direction perpendicular to the aquifer flow, is contaminated by entrapped NAPL. Apply the potential flow superposition of a uniform flow and a negative source, to suggest an appropriate location for a pumping well that collects the contaminated flowing groundwater. Consider the pumping well discharge versus the distance between the pumping well and the contaminated region. Provide an estimated time interval, over which the pumping well still supplies freshwater.