16.—(1) The Governor may, if the Governor thinks fit, provisionally suspend any noise certificate, exemption or other document issued under this Order pending inquiry into or consideration of the case.
(2) The Governor may, on sufficient ground being shown to the Governor’s satisfaction and after due inquiry into or consideration of the case, revoke, suspend or vary any such certificate, exemption or other document.
(3) The holder or any person having the possession or custody of any noise certificate, exemption or other document which has been revoked, suspended or varied under this Order must surrender it to the Governor within a reasonable time after being required to do so by him.
(4) The breach of any condition subject to which any noise certificate, exemption or other document has been issued under this Order renders the document invalid during the continuance of the breach.