For section 14(1)(a) of the Act, the criteria are all of the following:
(a) there is environmental harm, or an unacceptable risk of environmental harm, on or related to a proposed reserved legacy mine site;
(b) one or more remediation activities are needed to remediate the environmental harm or reduce the risk of environmental harm;
(c) the time and cost involved in carrying out the remediation activities on the proposed reserved legacy mine site warrants the reservation.