Administrative penalty proceedings must be preceded by a written Notice of Violation (NOV) informing the Respondent of the regulatory requirement at issue, unless otherwise provided by law. This NOV must be served upon the Respondent and must state the factual allegations and particular standards or rules upon which the NOV is based. A letter, petition, consent order or final order may constitute a NOV for purposes of instituting administrative penalty proceedings, if it meets the requirements of this paragraph.
Okla. Admin. Code § 310:2-7-2