this section shall be held for the duration of the mineral activities and for an additional period to cover the operator’s responsibility for reclamation, restoration, and long-term maintenance, and effluent treatment as specified in subsection (g). (d) Adjustments The amount of the financial assurance and the terms of the acceptance of the assurance may be adjusted by the Secretary concerned from time to time as the area requiring coverage is increased or decreased, or where the costs of reclamation or treatment change, or pursuant to section 204(f) (relating to temporary cessation of operations), but the financial assurance shall otherwise be in compliance with this section. The Secretary concerned shall review the financial guarantee every 3 years and as part of the permit application review under section 204(g). (e) Release Upon request, and after notice and opportunity for public comment, and after inspection by the Secretary concerned, such Secretary may, after consultation with the Administrator of the Environmental Protection Agency, release in whole or in part the financial assurance required under this section if the Secretary makes both of the following determinations: (1) A determination that reclamation or restoration covered by the financial assurance has been accomplished as required by this Act. (2) A determination that the terms and conditions of any other applicable Federal requirements, and State requirements applicable pursuant to cooperative agreements under section 208, have been fulfilled. (f) Release schedule The release referred to in subsection (e) shall be according to the following schedule: (1) After the operator has completed any required backfilling, regrading, and drainage control of an area subject to mineral activities and covered by the financial assurance, and has commenced revegetation on the regraded areas subject to mineral activities in accordance with the approved plan, that portion of the total financial assurance secured for the area subject to mineral activities