The Superintendent shall, subject to the rules of the Department:
1.Prepare or cause to be prepared, plans, specifications and estimates of costs of construction, maintenance and operation and estimate of earnings if any, for all airports and appurtenances thereto to be established by the Commission.2.Act for the Commission in all matters relating to the supervision of the construction, maintenance and operation of all airports under its jurisdiction and at its direction.3.Perform such other duties as may be prescribed by law, the rules of the Department or the direction of its Chief Engineer, in conformity thereto, however, no Superintendent shall be required without his consent and the consent of the county board of the county in whose employ he is, to perform services in any other county.