Two monitoring wells are installed along the flow path with the following characteristics. If a chemical tracer with a retardation factor of 5 takes 50 days to arrive at well 2, what would be the hydraulic gradient (unitless)? Porosity: 0.5 Hydraulic conductivity (K): 1000 m/day Distance between two wells: 5000 feet

Two monitoring wells are installed along the flow path with the following characteristics. If a chemical tracer with a retardation factor of 5 takes 50 days to arrive at well 2, what would be the hydraulic gradient (unitless)? Porosity: 0.5 Hydraulic conductivity (K): 1000 m/day Distance between two wells: 5000 feet

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Seepage

Section: Chapter Questions

Problem 7.6P

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Problem # 2. A pumping test was made in a sand layer extending to a depth of 15m. The initial groundwater table is located 2 m. below the ground surface. Observation wells were sighted at distances 3m and 7.5m from the pumping well. Using a discharge of 0.4 m^3 per hour, a steady level is attained at the pumping well. The measured drawdowns at the two observation wells are 1.5 m and 0.35 m. respectively. a. Find the hydraulic head at the first observation well.b. Find the hydraulic head at the second observation well.c. Compute the coefficient of permeability.
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