Question $3$:

$35$ Points

A fully penetrating $12$ in diameter well has its bottom $80ft$ below the

static water table. The well is in unconfined aquifer. After steady state

of pumping $1100gpm,$ the water table in the pumping well stabilizes to

$10ft$ below the static water table. A drawdown of $3\mathrm{.}65ft$ is monitored

in an observation well $320ft$ away from the pumping well. Please find

the hydraulic conductivity $(f\frac{t}{?}$ day$).$