A 120,000 m 3 lagoon is designed to accommodate an input flow of 0.20 m 3 /s. The
Environmental Guidelines determine that the effluent from the lagoon must contain no more
than 5.0 mg/L of a specific contaminant. Assume complete mixing and steady state
conditions. Calculate the maximum allowable concentration of the contaminant (in mg/L) in the input flow of the lagoon.