The Mayor is the Chief Executive of the City of Portland. If the Mayor, for any reason, is unable or unavailable to perform the duties of office under this Code during a state of emergency, the duties shall be performed by:
A. The president of the Council;
B. The available Council member who has most recently served as President of the Council;
C. The available Council member holding the position with the lowest number.
The powers of the successor to the Mayor shall be limited to those granted under this Code and duration of succession shall be until such time as the Mayor is able and available to perform the duties of office.