A long-term pumping test was conducted to determine the hydraulic conductivity of a 82 mthick confined aquifer. The non-pumping piezommetric surface was 109.5 m above the confinedlayer. The pumping rate was 0.03 m'/s. The steady-state drawdown at an observation well 45 maway from the pumping well was 3.6 m. The drawdown at an observation well 65 m away fromthe pumping well was 1.4 m.
(a) Determine the hydraulic conductivity of the confined aquifer.
(b) Determine the influence radius of this pumping well system.