1. Diamond Mill Pond located in the South Mountain Reservation is a small pond with a volume of 400 m2 (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. [question deleted. Set up left for context] 6. It has been suggested that aeration of Diamond Mill Pond could be a method to remove the Atrazine from the water. If we disregard any interactions that the atrazine has with sediment and model this process as a completely mixed reactor with air flowing through the pond. Is this and efficient system that can get the atrazine to decrease in the system to a level below the surface water quality standard of 760 ug/L? Use an air flow rate of 100 m3/min, assume that the influent air is free of atrazine and the water and air reach equilibrium as the air bubbles travel through the water column. (Hint: write out a mass balance of all losses from the system)