A $2,400-$ft$-$long, $2-$ft$-$diameter pipeline conveys water from a hill$-$top reservoir to an industrial site. The pipe is made of ductile iron, has an outside diameter of $2\mathrm{.}25$ feet, and has expansion joints. If the flow rate is $30$ cfs $,$ determine:

A$)$ the maximum water hammer pressure $($in psi$)$ that is likely to occur if the downstream flow valve is closed in $0\mathrm{.}95$ seconds.

B$)$ the water hammer reduction $($in psi $)$ if a diverter is added that reduces the flow rate from $30$ cfs to $10$ cfs almost instantly upon valve closure.