(c) The director shall issue a permit for any term, not exceeding five years, if the director determines this to be protective of human health and the environment; provided that the permit may be subject to conditions as the director may prescribe. The director, on application, shall renew a permit from time to time for a term not to exceed five years if the director determines this to be protective of human health and the environment. The director shall not deny an application for the issuance or renewal of a permit without affording the applicant an opportunity for a hearing in accordance with chapter 91. The director, on the director's own motion or the application of any person, may modify, suspend, or revoke any permit if, after affording the permittee an opportunity for a hearing in accordance with chapter 91, the director determines that:
(1) There is a violation of any condition of the permit;(2) The permit was obtained by misrepresentation, or failure to disclose fully all relevant facts; or(3) There is a release or threatened release of regulated substances that the department deems to pose an imminent and substantial risk to human health or the environment.