Ill. Admin. Code tit. 62 § 1819.19

Current through Register Vol. 48, No. 50, December 13, 2024

Section 1819.19 - Auger Mining: Backfilling and Grading

a) Auger mining shall be conducted in accordance with the backfilling and grading requirements of 62 Ill. Adm. Code 1816.102 and 1816.104 through 1816.106.

b) Where auger mining operations affect previously mined areas that were not reclaimed to the standards of 62 Ill. Adm. Code 1810 - 1828 and the volume of all reasonably available spoil is demonstrated in writing to the Department to be insufficient to completely backfill the highwall, the highwall shall be eliminated to the maximum extent technically practicable in accordance with the following criteria:

1) The person who conducts the auger mining operation shall demonstrate to the Department that the backfill, designed by a qualified registered professional engineer, has a minimum static safety factor for the stability of the backfill of at least 1.3.

2) All spoil generated by the auger mining operation and any associated surface coal mining and reclamation operation, and any other reasonably available spoil shall be used to backfill the area. Reasonably available spoil shall include spoil generated by the mining operation and other spoil located in the permit area that is accessible and available for use and that when rehandled will not cause a hazard to the public safety or significant damage to the environment. For this purpose, the permit area shall include spoil in the immediate vicinity of the auger mining operation.

3) The coal seam mined shall be covered with a minimum of four (4) feet of nonacid- , nontoxic-forming material and the backfill graded in accordance with subsection (a).

4) Any remnant of the highwall shall be stable and not pose a hazard to the public health and safety or the environment.

5) Spoil placed on the outslope during previous mining operations shall not be disturbed if such disturbances will cause instability of the remaining spoil or otherwise increase the hazard to the public health and safety or to the environment.

Ill. Admin. Code tit. 62, § 1819.19

Added at 11 Ill. Reg. 8501, effective July 1, 1987