Problem:
Two observation wells, 450 m apart, have been constructed in a confined aquifer with a hydraulic conductivity of 5*10^-4 cm/s and a porosity of 0.35. The average thickness of the aquifer between the wells is 45 m. Well 1 (water surface elevation of 95 m) lies to the east of Well 2 (water surface elevation of 94.6 m). A stream lies 900 m to the west of Well 2.
Requirement:
Question 1: Determine the flow rate per unit width of the aquifer.
Question 2: Calculate how long it would take groundwater contaminants to travel from Well 1 to the stream.
Question 3: Calculate the level of the potentiometric surface at a distance 600 m to the east of Well 1.
Note: Explain all steps comprehensively.