Sec. 10.1. (a) This section applies to a:
(1) first class city; or
(2) second class city.
(b) After approval by ordinance or resolution of the legislative body of a city described in subsection (a), the executive of the city may submit an application to an advisory commission on industrial development requesting that one (1) area within the city be designated as a district under section 12.1 of this chapter. However, the total number of districts designated in a city under this chapter after June 30, 2003, (excluding districts designated before July 1, 2003) may not exceed one (1).