A pumping system must be specified for a lift station at a wastewater treatment facility. The average flow rate is 110 million liters per day and the required lift is \(10 \mathrm{~m}\). Non-clogging impellers must be used; about 65 percent efficiency is expected. For convenient installation, electric motors of \(37.5 \mathrm{~kW}\) or less are desired. Determine the number of motor/pump units needed and recommend an appropriate operating speed.