During the term of the permit the permittee may submit an application for a revision of the permit, together with a revised reclamation plan, to the regulatory authority.

An application for a revision of a permit shall not be approved unless the regulatory authority finds that reclamation as required by this chapter and the State or Federal program can be accomplished under the revised reclamation plan. The revision shall be approved or disapproved within a period of time established by the State or Federal program. The regulatory authority shall establish guidelines for a determination of the scale or extent of a revision request for which all permit application information requirements and procedures, including notice and hearings, shall apply: Provided, That any revisions which propose significant alterations in the reclamation plan shall, at a minimum, be subject to notice and hearing requirements.

Any extensions to the area covered by the permit except incidental boundary revisions must be made by application for another permit.