The Director of Public Works shall have the following duties: To hold at least 1 public hearing before the execution of any contract which permits an establishment to discharge industrial wastes into a sanitary or storm sewer. At least 15 days’ notice of the time and place of such hearing shall be published in a newspaper of general circulation, and on a newspaper of local community circulation if such is published. To hold an annual hearing after 15 days’ notice by publication in at least 2 newspapers of general circulation, for the purpose of reviewing the status of all existing contracts in force which permit the discharge of industrial wastes into the City’s sewers. City Code, 1976/83, art. 25, §9(a), (b) Ord. 83-1096 Ord. 91-775