QUESTION 2 A constant head permeability test was conducted on a sample of soil 15cm long and 60cm in cross-sectional area in the KNUST soil laboratory. The quantity of water collected was 50cm in 20 seconds under a head difference of 25cm. Calculate the hydraulic conductivity. If the porosity of the sand is 60%, calculate the average velocity and the seepage velocity. Calculate the hydraulic conductivity of a similar soil with a porosity of 35% from the results of this test QUESTION 3 A pumping well test was made in sands extending to a depth of 20m where an impermeable stratum was encountered. The initial ground-water level was at the ground surface. Two observation wells were sited at distances of 3.5m and 8m from the pumping well. The discharge after steady state was established was 13 m/hr. If drawdowns at the two observation well were 1.5m and 0.35m, calculate the coefficient of permeability