unconfined aquifer which is 33.2 m thick. The drawdown at the pumping well is 1.34 m and the permeability of the gravel aquifer is 4.32 * 10-3 m/s. If the flow is steady-state and the discharge is 422.3 lt/min, a- find the drawdown a

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This is for hydrology. How would I calulate the time it would take for the plume to reach the next well in it's path? Plume is moving in a southeast direction with with the next well at a distance of 61.2m away with a hydraulic gradient of 0.15m between the two wells. Here is the other information I have. Thank You A confined aquifer with the top of the aquifer about 13.5 m below the surface. The aquifer is 5.5 m thick and is bounded by impervious rock below (forming the datum for the hydraulic head measurements) and a clay aquitard above. Analysis of the aquifer material reveals a bulk density of 1.75 g/cm3, porosity of 0.35 and 0.55% organic carbon. After a pumping test, you calculate that the transmissivity of the aquifer is 0.00025 m2/s and the storativity is 0.000055. What monitoring well(s) would you next expect to see toluene found in and in approximately how long?