(a)    A member may retire with a normal service retirement allowance if:

(1)    on or before the date of retirement, the member:

(i)    has at least 20 years of eligibility service;

(ii)    1.    is a correctional case management specialist, supervisor, or manager on or before June 30, 2016;

2.    is vested in the Correctional Officers’ Retirement System; and

3.    has a combined total of at least 20 years of eligibility service from:

A.    the Correctional Officers’ Retirement System and the Employees’ Retirement System; or

B.    the Correctional Officers’ Retirement System and the Employees’ Pension System;

(iii)    1.    is serving in a position specified in:

A.    § 25–201(a)(8) or (9) of this title on or before June 30, 2017; or

B.    § 25–201(a)(10) or (11) of this title on or before June 30, 2018;

2.    is vested in the Correctional Officers’ Retirement System; and

3.    has a combined total of at least 20 years of eligibility service from:

A.    the Correctional Officers’ Retirement System and the Employees’ Retirement System; or

B.    the Correctional Officers’ Retirement System and the Employees’ Pension System; or

(iv)    is at least 55 years old and has:

1.    at least 5 years of eligibility service credit, if the member is a member on or before June 30, 2011; or

2.    at least 10 years of eligibility service credit, if the member becomes a member on or after July 1, 2011; and

(2)    the member completes and submits a written application to the Board of Trustees stating the date when the member desires to retire.

(b)    On retirement under this section, a member is entitled to receive a normal service retirement allowance that equals one fifty–fifth of the member’s average final compensation multiplied by the number of years of creditable service.

(c)    (1)    This subsection applies only to:

(i)    a correctional case management specialist, supervisor, or manager who has a combined total of 20 years of eligibility service as provided in subsection (a)(1)(ii) of this section; or

(ii)    a member serving in a position specified in § 25–201(a)(8), (9), (10), or (11) of this title who has a combined total of 20 years of eligibility service as provided in subsection (a)(1)(iii) of this section.

(2)    A member is entitled to receive a normal service retirement allowance that equals an allowance based on the creditable service the member has in the Correctional Officers’ Retirement System.