Find the answer of the following problem
Problem- A sodium choride (non-reactive, inert) spill has entered a water-table aquifer. Aquifer characteristics are: K=335ft/day; Porosity=0.35. A test well dug at the spill site has a static water level of 560ft. One mile or 5280ft down gradient there is a drinking water well with a static water level of 550ft.
Part 1- Determine the velocity of contaminant migration and time for spill to reach the drinking water well (years)?
I want experts help to calculate the velocity of contaminant migration.