Indiana Code Title 14. Natural and Cultural Resources § 14-34-15-3

Sec. 3. (a) The director shall inspect the surface coal mining and reclamation operation covered by a permit issued under this article on an irregular basis with, at a minimum, the following:

(b) In addition to the inspections conducted under subsection (a), the director shall inspect the surface coal mining and reclamation operation covered by a permit issued under this article whenever, on the basis of any information available to the director, including receipt of information from any person, the director has reason to believe that the operation is in violation of this article or the commission's rules.  The inspection must occur within ten (10) days of receipt of the notification.  If the inspection results from information provided by any person, the person may accompany the director on the inspection.

(c) All inspections must occur without prior notice to the permittee or the permittee's agents or employees except for necessary onsite meetings with the permittee.