(a) Except for seasonal suspension, the operator shall notify the authorized officer of any suspension of operations within 30 days after such suspension. This notice shall include:

(1) Verification of intent to maintain structures, equipment, and other facilities, and

(2) The expected reopening date.

(b) The operator shall maintain the operating site, structure, and other facilities in a safe and environmentally acceptable condition during nonoperating periods.

(c) The name and address of the operator shall be clearly posted and maintained in a prominent place at the entrance to the area of mining operations during periods of nonoperation.