KRS 353.120: Method of plugging well drilled through coal-bearing strata.

When any well drilled through a workable coal bed is abandoned, it shall at that time be

plugged to a point forty (40) feet below the lowest workable coal bed, in the following

manner: The hole shall be filled with mud, clay or other nonporous material fro m the

bottom to a point twenty (20) feet above the top of the lowest oil, gas or water -bearing

strata, or a permanent bridge shall be anchored thirty (30) feet below its lowest oil, gas or

water-bearing strata, and from this bridge it shall be filled with mud, clay or other

nonporous material to a point twenty (20) feet above the strata, at which point there shall

be placed a plug of cement or other suitable material that will completely seal the hole.

Between this sealing plug and a point twenty (20) feet above the next higher oil, gas or

water-bearing strata, the hole shall be treated in a like manner and at that point there shall

be placed another suitable plug, that will completely seal the hole. In a like manner the

hole shall be filled and plugged, or bridged, filled and plugged, with reference to each of

its oil, gas or water -bearing strata. Whenever such strata are not widely separated and are

free from water, they may be grouped and treated as a single productive stratum. After

plugging all strata, a final plug shall be anchored approximately ten (10) feet below the

bottom of the largest casing in the well and from that point to the surface the well shall be

filled with mud, clay or other nonporous material.