28 CFR §541.50

1. (a)Only the Executive Panel may release an inmate from a control unit. The following factors are considered in the evaluation of an inmate's readiness for release from a control unit:
   1. (1)Relationship with other inmates and staff members, which demonstrates that the inmate is able to function in a less restrictive environment without posing a threat to others or to the orderly operation of the institution;
   2. (2)Involvement in work and recreational activities and assignments;
   3. (3)Adherence to institution guidelines and Bureau of Prisons rules and policy;
   4. (4)Personal grooming and cleanliness; and
   5. (5)Quarters sanitation.
2. (b)An inmate released from a control unit may be returned:
   1. (1)To the institution from which the inmate was originally transferred;
   2. (2)To another federal or non-federal institution; or
   3. (3)Into the general population of the institution which has a control unit.