If an authority and a wireless provider entered into an agreement addressing the subject matter of this chapter prior to October 1, 2019:
(1) This chapter shall not apply until such agreement expires or is terminated pursuant to its terms with regard to poles, decorative poles, support structures, replacement poles, and small wireless
facilities installed pursuant to such agreement prior to October 1, 2019; and
(2) Otherwise, the provisions of this chapter shall apply to poles, decorative poles, support structures, replacement poles, and small wireless facilities installed on or after October 1, 2019.