The Commission may require any person, firm or corporation to retain an expert consultant or consultants to study and report as to compliance or noncompliance with the performance standards and to advise how an existing or proposed use can be brought into compliance with the performance standards. Such consultants shall be fully qualified to give the required information and shall be a person or firm mutually agreeable to the Commission and to the owner or operator of the use in question. In the event of inability to select a mutually agreeable consultant, the City Council shall select the consultant. The cost of the consultant's services shall be borne by the owner or operator of said use.
('64 Code, § 75.04)