§ 30.05 MAYOR; SUPERVISORY POSITIONS.
   (A)   The Mayor shall be Superintendent of the Department of Public Affairs and he or she shall have supervision over and be responsible for the proper performance of that Department.
   (B)   The Mayor, as chief executive, shall be generally charged with and be responsible for the proper conduct of the city’s affairs and the enforcement of the provisions of this code of ordinances and other ordinances of the city.
   (C)   The Mayor shall have supervision and control over the Chief of Police and all members of the Police Department, which officer and all officers, employees and assistants subordinate to him or her are hereby assigned to the Department of Public Affairs.
   (D)   In the absence of specific provisions to the contrary, the Mayor shall sign all contracts on behalf of the city and, unless otherwise provided, no contract shall be binding upon the city without his or her signature.
   (E)   The Mayor shall exercise temporary supervision over the department of any Commissioner during the absence or inability to act of the Commissioner in charge of the department.
(1994 Code, § 30.05)