The Commission may, in its corporate capacity, construct or cause to be constructed within the District hospitals, sanitariums, clinics, laboratories, or any other institution, building, or structure or other ancillary or related facilities that the Commission may, from time to time, determine are established and operated (i) for the carrying out of any aspect of the Commission’s purposes as set forth in this Act, for the study, diagnosis, and treatment of human ailments and injuries, whether physical or mental, or to promote medical, surgical, and scientific research and knowledge, for any uses the Commission shall determine will support and nurture facilities and uses permitted by this Act, or for such nursing, extended care, or other facilities as the Commission shall find useful in the study of, research in, or treatment of illnesses or infirmities peculiar to aged people, after a public hearing to be held by any Commissioner or other person authorized by the Commission to conduct the hearing, which Commissioner or other person has the power to administer oaths and affirmations and take the testimony of witnesses and receive such documentary evidence as shall be pertinent, the record of which hearing he or she shall certify to the Commission, which record shall become part of the records of the Commission, notice of the time, place, and purpose of the hearings to be given by a single publication notice in a secular newspaper of general circulation in St. Clair County at least 10 days before the date of the hearing, or (ii) for such institutions as shall engage in the training, education, or rehabilitation of persons who by reason of illness or physical infirmity are wholly or partially deprived of their powers of vision or hearing or of the use of such other part or parts of their bodies as prevent them from pursuing normal activities of life, for office buildings for physicians or dealers in medical accessories, for dormitories, homes, or residences for the medical profession, including interns, nurses, students, or other officers or employees of the institutions within the District, for the use of relatives of patients in the hospitals or other institutions within the District, for the rehabilitation or establishment of residential structures within a historic district properly designated under a federal statute or a State or local statute that has been certified by the Secretary of the Interior to the Secretary of the Treasury as containing criteria that will substantially achieve the purpose of preserving and rehabilitating buildings of historic significance to the district, or such other areas of the District as the Commission shall designate, for research, development, and resultant production in any of the fields of medicine, chemistry, pharmaceuticals, physics, and genetically engineered products, for biotechnology, information technology, medical technology, or environmental technology, for the research and development of engineering, or for computer technology related to any of the purposes for which the Commission may construct structures and improvements within the District. All such structures and improvements shall be erected and constructed in accordance with the provisions of the Illinois Procurement Code that apply to State agencies. No construction may be undertaken pursuant to this Section before a comprehensive master plan has been approved under Section 65.