A ww has an influent coming to the reactor with a bod concentration of 161 mg/l. The effluent target is 10 mg/l. The design mlss is 2500 mg/l. The mlvss is 75% of the mlss. The influent flow is 5 mgd. The reactor volume is 6,383,253 l. The y coefficient is 0. 6 mg vss / mg bod5. The endogenous decay coefficient is kd