(a) Any active member may elect to irrevocably relinquish peace officer or firefighter status with the plan and to retain all credited service as if it had been acquired as a member other than a peace officer or firefighter.
(b) In order to relinquish peace officer or firefighter status with the plan, a person must be an active member and must file a written request with the administrator by July 1, 1984, or within six months after employment as a peace officer or firefighter, whichever occurs later. No person has more than one opportunity to exercise this option.
(c) As soon as possible after the relinquishment, the administrator shall refund to a person who relinquishes peace officer or firefighter status under this section a refund equal to the amount by which the balance of the person's accumulated mandatory contributions plus interest exceeds the balance which would exist if all service credit had been acquired as a member other than a peace officer or firefighter.
(d) A written request to relinquish peace officer or firefighter status is irrevocable upon filing with the administrator.