(1) A person or governmental entity that believes that a violation of this part or a rule promulgated under this part has occurred or has been attempted may make an allegation of that fact to the department in writing.

  (2) If, upon reviewing an allegation under subsection (1), the department determines there is a reasonable basis to believe the existence of a violation or attempted violation of this part or a rule promulgated under this part, the department shall investigate.

  (3) The department may hold hearings, administer oaths, and order testimony to be taken at a hearing or by deposition conducted pursuant to the administrative procedures act of 1969.

  (4) The department may proceed under section 5567 if it determines that a violation of this part or a rule promulgated under this part has occurred.

  (5) This section does not require the department to wait until harm to human health has occurred to initiate an investigation under this section.