A confined aquifer (Figure P7.2.5) has a thickness of 10.0 m and a permeability of 1.30 X 10-4 m/sec. When a 30-cm-diameler well is pumped at the rate of 30 m3/hr, the drawdown in the piezometric surface is 15 mat the well. Determine the drawdown in the piezometric surface at a distance of 30 m from the well.

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2-30 m h Original peirometric surface 30 m 15 m Impermeable stratum