; and (ii) the Good Samaritan remains responsible for compliance with the terms of the Good Samaritan permit. (4) Signature by Good Samaritan The signature of the relevant Good Samaritan and a cooperating person, if any, on the Good Samaritan permit shall be considered to be an acknowledgment by the Good Samaritan that the Good Samaritan accepts the terms and conditions of the Good Samaritan permit. (5) Other development (A) No authorization of mining activities Except as provided in the Good Samaritan permit, no mineral exploration, processing, beneficiation, or mining shall be— (i) authorized by this Act; or (ii) covered by any waiver of liability provided by this Act from applicable law. (B) Sale or use of materials A Good Samaritan may sell or use materials recovered during the implementation of a remediation plan only if all of the proceeds from the sale or use of the materials are first used— (i) to defray the costs of the remediation; and (ii) to the extent required by the Good Samaritan permit, to reimburse the Administrator or the head of a Federal land management agency for any costs incurred for oversight of the Good Samaritan. (C) Connection with other activities The commingling or association of any other discharge of water or historic mine residue or any activity, project, or operation with any aspect of a project subject to a Good Samaritan permit shall not limit or reduce the liability of any person associated with the other discharge of water or historic mine residue or activity, project, or operation. (g) Additional work A Good Samaritan permit may allow the Good Samaritan to return to the orphan mine site after the completion of the remediation to perform operations and maintenance or other work— (1) to ensure the functionality of the orphan mine site