; and (B) reasonably commercially available efforts are sufficient to be in conformity with the international obligations of the United States pertaining to nongovernmental entities of the United States under the Outer Space Treaty. (4) Prohibition on retroactive conditions No other modifications may be made, or additional conditions placed, on a certification after the date on which the certification is issued (except to account for a material change as provided in section 80105(c) or the removal of a condition pursuant to subsection (d)). (5) Nondelegable The responsibilities of the Secretary under this subsection may not be delegated, including to the Office of Space Commerce. (d) Authority To remove conditions The Secretary, as determined appropriate, may remove a condition placed on a certification pursuant to subsection (c). 80104. Mitigation of space debris (a) Plan submission To be eligible for a certification under this chapter, each application shall include a space debris mitigation plan for the space object. Such plan— (1) shall take into account best practice guidelines promulgated by the United States and the Interagency Debris Coordinating Committee; and (2) may take into account that a space object may end certified operations and be stored in a safe manner until such time as the space object is permanently disposed of or certified for further operations. (b) Implementation To the maximum extent practicable, a holder of a certification under this chapter shall notify the Secretary not later than 30 days before beginning to implement the disposal phase of a space debris mitigation plan described in subsection (a). Such certification holder shall, not later than 30 days after completing implementation of such phase, update the Secretary of the results of any space debris mitigation efforts. 80105. Continuing certification requirements (a) Notification requirement A certification holder shall, in a timely manner, notify the Secretary if— (1) a certified space object has terminated operations