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Question 1 20 A certain confined aquifer in the Inanda area in South Africa has a thickness of 18.5 m, a hydraulic conductivity of 12.5 m/day and a storativity of 0.0045. A pumping well drawing from this aquifer has a pumping rate of 0.035 L/s. 1.1 Calculate the transmissivity of the aquifer. 3 1.2 What is the drawdown at a distance of 15 m from the well after 24 hours of pumping? 7 1.3 What will be the drawdown after 12 months of pumping? 5 1.4 What are the basic assumptions that govern groundwater flow? All geologic formations are horizontal and of infinite horizontal extent. 5