In addition to the definitions of terms contained in the State regulations, the following definitions and terminology shall apply and are applicable in the interpretation and appreciation of this Division: Department as defined in COMAR 10.18.01, shall include the Prince George's County Health Department. Emergency shall mean a sudden, unexpected, and unforeseen condition of such public gravity as to require immediate action or a condition, which is predicted with reasonable certainty to require immediate action to carry out the purposes of this Division. Plan for compliance shall mean a schedule of actions submitted by the violator and approved by the Department.