No State or Indian tribe shall be liable under any provision of Federal law for any costs or damages as a result of action taken or omitted in the course of carrying out an approved State or Indian tribe abandoned mine reclamation plan. This section shall not preclude liability for costs or damages as a result of gross negligence or intentional misconduct by the State or Indian tribe. For purposes of this section, reckless, willful, or wanton misconduct shall constitute gross negligence or intentional misconduct. [59 FR 28172, May 31, 1994]