(1) The Secretary may issue a permit for the purposes of section 19 or 20 for the transport or movement of any plant, plant product, used package, used equipment or earth material into or out of a control area subject to any conditions about the treatment of the plant, plant product, used package, used equipment or earth material.
(2) The Secretary may revoke or vary a permit at any time by notice in writing to the holder.
(3) If a permit given under this section is revoked, the holder must, upon request by the Secretary, immediately deliver the revoked permit to the Secretary.
Division 3—Control measures