Modification, amendment, or extension of development plan;

Ind. Code § 8-10-5-11, under Chapter 5. Creation of Port Authorities by Local Governments.

Ind. Code § 8-10-5-11

conclusiveness Sec. 11. The plan and any modification, amendment or extension thereof, when adopted by the board of directors after notice and hearing shall be final and conclusive and its validity shall be conclusively presumed. Formerly: Acts 1959, c.343, s.11.