The commission may suspend or cancel a permit if—
(a) the permit was obtained on the basis of incorrect information supplied to the commission, whether or not fraud was intended; or
(b) the permit was obtained by fraud or other improper means; or
(c) the permittee carries out tier 1 defective work on the land the subject of the permit; or
(d) the permittee contravenes a condition to which the permit is subject; or
(e) the commission becomes aware of the existence of facts that would have allowed the commission to refuse to issue the permit originally.