An unconfined aquifer has saturated thickness of 20 m, specific yield of 0.15. and hydraulic conductivity of 60 m/day. A wellfield is to be developed in the aquifer. All wells will be arranged parallel to a stream that flows through the groundwater basin. Each well will have diameter of 0.1 m and will be located 100 m from the stream. The wellfield is expected to deliver a combined discharge of 5000 L/min and the maximum allowable drawdown is 2 m. Estimate the number of wells needed, pumping rate from each well, and spacing between the wells.