large quantities of nitrate (a mobile anion) and an industrial solvent with a distribution coefficient of Kd=0.5 cm3/g were spilled on the soil surface Meteorological data shows tat annual rainfall and evaporation are 1000mm and 550mm, respectively. There is a water table at 60 m below ground surface. Assume that the soil has an average water content of 0.25kg/kg and a bulk density of 1500 kg/m3 Estimate the approximate the appoximate position of both peaks 30 years after they were spilled. Estimate te expected future arrival time of both peaks at the water table