1. (6 points) A groundwater plume of contaminants is moving towards a river. Calculate the approximate amount of plume seepage (in units of cubic meters per year) into the river assuming: (1) the plume is about 30 meters wide, 10 meters deep, and has an elliptical cross-sectional area, (2) the hydraulic conductivity of the soil is 2x10-3 cm/sec, and (3) the water table drops 6 meters over a horizontal distance of 350 meters. [Hints: the area of an ellipse = Pix width x height /4; 1 cubic meter = 1,000 liters]. area of an ellipse = Pix width x height /4