The Secretary may suspend or cancel an authority under this Division—
(a) if the Secretary reasonably believes any one of the following grounds exists—
(i) the authority holder is no longer a fit and proper person to hold the authority; or
(ii) the authority was issued to the authority holder or renewed on the basis of information that was false and misleading in a material particular; or
(iii) the authority holder has breached a condition of their authority; or
(iv) the authority holder has not complied with a provision of this Act or the regulations; or
(v) there is a risk to the health or safety of persons or the safety of the environment if the authority is not suspended or cancelled; or
(vi) the authority holder no longer meets the requirements that the Secretary considered in issuing or renewing the authority (as the case requires); or
(b) by agreement between the Secretary and the authority holder.