Rule 2439. A permittee of a well shall fill and level the cellar and all pits and excavations, remove or eliminate debris, minimize erosion, and restore the well site as nearly as practicable to the original land contour or to a condition approved by the supervisor of mineral wells or authorized representative of the supervisor of mineral wells as soon as practical, but not more than 9 months after plugging completion.
Mich. Admin. Code R. 299.2439