calculate the time it would take for sewage from the septic tank from the data below below to reach the well for this home

Depth to Water (Well): 24.8 ft
Depth to Water (Septic Tank): 20.7 ft
Hydraulic Conductivity: 30 ft/day
Porosity: 28%
Hydraulic Gradient: 0.002
Groundwater Velocity: 0.19 ft/day
Distance between the well and the septic tank: 2350 ft