(1) The APVMA may, at any time, by notice in writing to the assignee of a notification number for particular premises:
(a) without payment of a fee, assign a notification number for the premises in place of a notification number previously assigned; or
(b) if it appears to the APVMA that the premises are no longer used for the supply of hormonal growth promotant--inform the assignee that it intends, after a specified period, to withdraw the assigned notification number.
(2) If, within the specified period, the assignee does not satisfy the APVMA that the premises are still used for the supply of hormonal growth promotant, the APVMA may withdraw the assigned notification number.