It is required to dewater a construction site of 80 m by 80 m. The bottom of the construction will be 1.5 m below the initial water surface elevation of 90 m. Four pumps are to be used in 0.5-m diameter wells at the four corners of the site. The aquifer has a transmissivity of 1600 m^2/d and a storage coefficient of 0.10. The site needs to be ready after one month of pumping. Required:
a. Determine the required pumping rate.
b. If the site is to be ready after one month of pumping, determine the pumping rate.