312 IAC 25-6-8 Surface mining; casing and sealing drilled holes; general requirements

Sec. 8. (a) Each drilled hole, shaft, well, or other exposed underground opening shall be cased, sealed, or managed to prevent acid or toxic water drainage from entering ground or surface waters and to minimize disturbance to the prevailing hydrologic balance. Each hole extending below or beyond the stratum immediately below the lowermost coal seam to be mined by the surface methods, within the permit area, shall be sealed in a manner to prevent exposure by mining activity. (b) Use of a drilled hole, shaft, or other underground opening as a water well must meet the provisions of section 24 of this rule. (c) This section does not apply to holes solely drilled and used for blasting.