The functions of the Division of Waste Collection shall be the responsibility of the Director of Service or his or her designee. The Director or his or her designee shall be responsible for the weekly collection, removal and disposal of garbage, refuse and trash from all single-family residential units within the City, in addition to any other establishments within the City requesting such service; shall formulate and recommend policies and procedures for the Division and its personnel; shall be responsible for the duties assigned to the Division; and shall have control of personnel as provided by this Administration Code and the Personnel Rules and Regulations.