1 1. Diamond Mill Pond located in the South Mountain Reservation is a small pond with a volume of 400 m (1 meter deep, 40 meters long and 10 meters wide). It is fed by a single tributary that has an average flow of 500 L/min The dissolved organic carbon (DOC) concentration in the tributary is 10 mg/L during normal conditions. When water enters the pond the DOC is consumed by microorganisms and the decay follows a 1st order process. Reaction rate, r=kCl with a rate constant of 0.001 min-1 [question deleted. Set up left for context] A chemical tanker truck was driving on Pleasant Valley Way (a road that goes by Diamond Mill Pond) and the driver fell asleep and crashed into the pond. There was a spill of 50 kg of Atrazine (a common Herbicide). If we are trying to determine the fate and transport of the spill we should try to figure out how and if it will travel through the system. Assume there is no reaction occurring in the system. For all the scenarios below maintain the same flow rate and dimension as identified in problem 1. 2. Scenario one. If we assume that the Atrazine will only travel through the system in the water. Assume the pond has the dimensions above (question 1) and the flow is constant and uniform. If we have a Longitudinal Mixing coefficient of 0.1 m/min, how long will it take for the center of mass to leave the pond