Two wells penetrating a confined aquifer are 600 ft apart. Each well will be pumped at 40 ,000 ft3/day. However, the pumping from the second well will start a day and a half after the first one. Determine the drawdown at a point halfway between the two wells three days after the pumping has begun in the first well. The aquifer trans missivity is 10,000 ft2/day, and the storage coefficient is 0.0005.