; and (B) issue final approval of referral of any inmate who poses an ongoing significant and serious threat for placement in an administrative maximum facility. (9) Right to review placement in solitary confinement The Director of the Bureau of Prisons, the Director of the United States Marshals Service, or any facility that contracts with the Bureau of Prisons or the United States Marshals Service, shall ensure that no inmate shall be placed in solitary confinement without— (A) written notice provided to the inmate thoroughly detailing the basis for placement or continued placement in solitary confinement not later than 6 hours after the beginning of such placement, including— (i) thorough documentation explaining why such confinement is permissible and necessary; (ii) thorough documentation explaining the reason an exception applied if— (I) an exception under paragraph (2)(A), (3)(D), (4)(A), (6)(A), or (6)(B) is used to justify placement or continued placement in solitary confinement; or (II) an exception under paragraph (1) is used to justify increased restrictive conditions in solitary confinement; and (iii) thorough documentation explaining a clear plan for returning the individual to less restrictive conditions as promptly as possible; (B) a timely, thorough, and continuous review process that— (i) occurs not less than 7 days after placement in solitary confinement, and thereafter at least— (I) on a weekly basis for an inmate in a special housing unit; and (II) on a monthly basis for an inmate at an administrative maximum facility; (ii) includes private, face-to-face interviews with a multidisciplinary staff committee; (iii) examines whether— (I) placement in solitary confinement was and remains necessary; (II) the conditions of confinement comply with this section