Use Figure 2.2 to answer the questions below. Show all work. B 100 A X Co 50 0 1 mile Figure 2.2: Potentiometer Contour Map. Letters represent well locations. Hydraulic Heads 132 B 76 C 95 D 47 Calculate the hydraulic gradient from A to B. Calculate the hydraulic gradient from A to C. Calculate the hydraulic gradient from A to D. Assuming a hydraulic conductivity of 6 feet per day and a porosity of 0.21, how long will it take water to flow from Well A to Well D? If a contaminant was spilled at X, which well(s) would not likely be affected? Explain