A confined aquifer is 50 m thick and 0.5 km wide. Two observation wells are located 1.4 km apart in the direction of flow. Head in well No. 1 is 50m and in well No. 2 is 42m. Hydraulic conductivity is 0.7 m/day. Effective porosity is 25%. A ship carrying chemicals sank near the observation well no 1 and chemicals somehow reach the groundwater. How long it will take for the chemicals to reach Well no 2?

Structural Analysis
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A confined aquifer is 50 m thick and 0.5 km wide. Two observation wells are located 1.4 km apart in the direction of flow. Head in well No. 1 is 50m and in well No. 2 is 42m. Hydraulic conductivity is 0.7 m/day. Effective porosity is 25%. A ship carrying chemicals sank near the observation well no 1 and chemicals somehow reach the groundwater. How long it will take for
the chemicals to reach Well no 2?

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