Sec. 29. (a) If a public utility company files its objections to a tentative assessment within the time allowed under section 28(d) of this chapter, the department of local government finance may hold a preliminary conference on the tentative assessment at a time and place fixed by the department. After the preliminary conference, if any, the department of local government finance shall:
(1) make a final assessment of the company's distributable property; and
(2) notify the company of the final assessment.
(b) The department of local government finance must give notice of the final assessment under this section not later than:
(1) September 30 in the case of railcar companies; and
(2) June 30 in the case of all other public utility companies.