If the planning director or his or her designated representative determines that any condition of any conditional use permit, exception, or use permit issued pursuant to Chapter
17.44 or any provision of this title has been violated, or that any use is being exercised in such a manner as to constitute a public nuisance, the planning director shall cause a notice of violation to be mailed, by certified or registered mail, to the owner and occupant of the property, at his or her last known address, specifying the violation occurring, the remedial action required, and a reasonable time within which such remedial action must be completed. If the violation is not corrected or corrective measures are not commenced to the satisfaction of the planning director within the time stated in the notice of violation, the planning director shall set a hearing pursuant to this chapter before the planning commission for the revocation or suspension of the permit or exception and, in the event such violation or condition constitutes an immediate threat to health, safety or welfare, he or she may order immediate termination of the use, pending such hearing. After the public hearing, the planning commission may revoke, suspend or modify any conditional use permit, exception, or use permit which has been granted under either the provisions of this title or of any ordinance superseded by this title or of any ordinance superseded by this title on any one or more of the following grounds:
1. That such approval was obtained by fraud;
2. That the use for which such approval was granted is not being exercised;
3. That the use for which such approval was granted has ceased or has been suspended as provided in section
17.04.100;
4. That the use for which the conditional use permit, exception, or use permit was granted is being or recently has been exercised contrary to the terms or conditions of such approval or is in violation of any statute, ordinance, law or regulation;
5. That the use for which the approval was granted is so exercised as to be detrimental to the public health, safety or general welfare, or so as to be a nuisance.