Consider a wastewater effluent (qw = 1 m/s) with a lo = 75 mg/l and 2.0 mg/l of dissolved oxygen that is discharged into a river that has a flow rate of 8.7 m/s and a flow velocity of 2.0 ft/sec. the river just upstream of the discharge has a dissolved oxygen concentration of 7.0 mg/l and a lo of 4.7 mg/l. the temperature of the river is 15 °c and the temperature of the wastewater discharge is 24.7 °c. the deoxygenation rate constant (base e) is 0.20 d at 20°c; the reaeration rate constant (base e) is 0.50 dat 20 °c. the bod rate constant (base e) is 0.20 d at 20 °c. assume that the thetas for rate constant temperature corrections are 1.047 for all rate constants. assume sea level and fresh water conditions. a. determine the initial oxygen deficit (mg/l) and the ultimate bod, lo (mg/l) just downstream from the discharge after blending b. the time (days) and distance (miles) to reach the minimum dissolved oxygen concentration. c. the minimum dissolved oxygen concentration (mg/l) d. the dissolved oxygen that could be expected 50 miles downstream from the discharge (mg/l). e. use excel to create a graph of do vs. time. note that this is y vs. x. be sure to label the y and x axis including units and show the excel spreadsheet used to create your graph. the work you show in your calculation in partc will serve as your sample calculation.