(a) Any fireman who (1) accumulated service credit in the Article 8 fund for service as an employee of the Chicago Fire Department and (2) has terminated that Article 8 service credit and received a refund of contributions therefor, may establish service credit in this Fund for all or any part of that period of service under the Article 8 fund by making written application to the Board by January 1, 2010 and paying to this Fund (i) employee contributions based upon the actual salary received and the rates in effect for members of this Fund at the time of such service, plus (ii) the difference between the amount of employer contributions transferred to the Fund under Section 8-172.1 and the amounts equal to the employer's normal cost of contributions had such contributions been made at the rates in effect for members of this Fund at the time of such service, plus (iii) interest thereon calculated as follows: (1) For applications received by the Board before July 14, 1995, interest shall be calculated on the amount of employee contributions determined under item (i) above, at the rate of 4% per annum, compounded annually, from the date of termination of such service to the date of payment. (2) For applications received by the Board on or after July 14, 1995 but before the effective date of this amendatory Act of the 96th General Assembly , interest shall be calculated on the amount of employee contributions determined under item (i) above, at the rate of 4% per annum, compounded annually, from the first date of the period for which credit is being established under this subsection (a) to the date of payment. (3) For applications received by the Board on or after the effective date of this amendatory Act of the 96th General Assembly, interest shall be calculated on the amount of contributions determined under items (i) and (ii) of this subsection (a), at the actuarially assumed rate for each year, compounded annually, from the first date of the period for which credit is being established under this subsection (a) to the date of payment. A fireman who (1) retired on or after January 16, 2004 and on or before the effective date of this amendatory Act of the 93rd General Assembly and (2) files an application to establish service credit under this subsection (a) before January 1, 2005, shall have his or her pension recalculated prospectively to include the service credit established under this subsection (a).