In this section, “Pimlico racing facility site” and “training facility site” have the meanings stated in § 10–601 of the Economic Development Article. An interest of a person in an improvement at the Pimlico racing facility site or training facility site or an interest of a person in the real property of the Pimlico racing facility site or training facility site is not subject to property tax for the duration of: with respect to the Pimlico racing facility site, the long–term agreement described under § 10–646.1(d) of the Economic Development Article; or with respect to the training facility site, the long–term agreement described under § 10–646.1(d) of the Economic Development Article.