Complex sentence: Public Utility Model EMS is an ambulance system where the community retains public control of the ambulance system performance, ambulance capital assets and the accounts receivable through direct, accountable daily oversight and then subcontracts the day-to-day operations to an outside ambulance service provider.
Split into simpler sentences: Public Utility Model ("PUM") EMS is an ambulance system in which the community retains public control of the ambulance system's capital assets and accounts receivable through direct, accountable daily oversight. It then subcontracts the day-to-day operations to an outside ambulance service provider.