Any voluntary termination of parole should be executed in writing by the parolee, reviewed by the parole officer, and approved by an administrative parole judge at a hearing. Upon the execution of the voluntary termination of parole, the parole officer files preliminary parole violation information. If a parolee's parole is terminated, the parolee shall be returned to the custody of the department of corrections as soon as practicable. The parolee will receive credit for the time spent on parole prior to the voluntary termination of parole as determined by the administrative parole judge.
Iowa Admin. Code r. 205-11.1