In the making of any local improvements by a park district and except as in this section otherwise provided, the powers and duties provided to be exercised and performed by the respective officers of cities and villages under Article 9 of the Illinois Municipal Code, as heretofore and hereafter amended shall be exercised and performed by the corresponding officers of such park districts, insofar as action by any such officers is required under the form of local improvement proceeding the board elects to adopt for the improvement. The board of such district shall act as the Board of Local Improvements. The superintendent of such park district or such other official or person as the board may designate shall act as Superintendent of Special Assessments. The engineer employed by the board to prepare the plans and specifications for the improvements shall be the “engineer,” or if no such person be employed, then any qualified engineer designated by the board may so act. The attorney for said park district shall (unless a special attorney be employed by the board for such purpose) be the attorney for said Board of Local Improvements.
     The members of said board of local improvements shall act as such without compensation, and the secretary shall be ex-officio secretary of said board of local improvements and the treasurer shall perform the duties of collector of said special assessment and shall be custodian of such funds which shall be expended only for the improvement for which said assessment is levied.