Using the figure below.

a$)$ How long after construction of this hazardous waste disposal facility will it take for $C{l}^{-}$

leachate to reach the sand aquifer below the clay rich till? $($assume advection only for

this problem$)$

b$)$ What will be the steady state mass flux into the sand aquifer assuming a $C{l}^{-}$leachate

concentration of $0\mathrm{.}3m\frac{g}{L}($assume advection only for this$)$

Strategically located Hazardous Waste Facility

A well in the sand has a water level elevation of $100$ m $.$