$-$ Evaluate the piping system as shown $($assume the water level in the sump is $1$ ft above the bottom$).$

$-$ Draw the piping system head curve for flowrates $0$ to $125$ gpm on the pump characteristic curve given below. $($You must include points at $0,25,50,75,100,$ and $125$ gpm$)$

$-$ Determine the impeller sizing for a normal system flow of $100$ gpm$.$

$-$ Determine how much additional restriction $($head$)$ is required from the control valve to operate exactly at $100$ gpm$.$