Problem: From the information shown below, what two pieces of data are needed to calculate the pounds per day of waste activated sludge (WAS) in the MCRT calculation? . Plant flow, GPM . Aeration tank capacity, cu ft . MLSS, mg/L . WAS flow rate, MGD . Effluent TSS, mg/L . Influent TSS, mg/L . RASSs, mg/L O WAS flow rate, MGD and RASss, mg/L O Effluent TSS and Plant flow, GPM O Plant flow, GPM and Influent TSS, Ibs/day O Aeration tank capacity, cu ft, and MLSS, mg/L