817.11—Signs and markers.
(1)
Be posted, maintained, and removed by the person who conducts the underground mining activities;
(b) Duration of maintenance.
Signs and markers shall be maintained during all activities to which they pertain.
(c) Mine and permit identification signs.
(1)
Identification signs shall be displayed at each point of access from public roads to areas of surface operations and facilities on permit areas for underground mining activities.
(2)
Signs will show the name, business address, and telephone number of the person who conducts underground mining activities and the identification number of the current regulatory program permit authorizing underground mining activities.
(3)
Signs shall be retained and maintained until after the release of all bonds for the permit area.
(d) Perimeter markers.
Each person who conducts underground mining activities shall clearly mark the perimeter of all areas affected by surface operations or facilities before beginning mining activities.
(e) Buffer markers.
The boundaries of any buffer to be maintained between surface activities and a perennial or intermittent stream in accordance with §§ 784.28 and 817.57 of this chapter must be clearly marked to avoid disturbance by surface operations and facilities.
(f) Topsoil markers.
Where topsoil or other vegetation-supporting material is segregated and stockpiled as required under § 817.22, the stockpiled material shall be clearly marked.