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Flammable liquids, such as oil and fuel, will be protected from spilling into other areas by • earthen, concrete or HDPE lined structures surrounding each storage facility. A spill containment control plan has been developed to protect against spills. All major equipment on the mine site will be equipped with portable fire extinguishers or automatic fire suppression systems. The water truck used for dust suppression at the mine site could also be used to control most fires. Sealing of Exploration and Mine Holes Exploration and mine holes which remain open for use as a water supply well or for use as a groundwater monitoring well will be completed with casing or piezometers at sufficient height above the land surface to prevent drainage of surface water or entrance of foreign material into the well, and will be fitted with caps to prevent the introduction of objects other than monitoring and sampling equipment. When the groundwater monitoring wells are no longer needed or required for any purpose, each well will be eliminated by plugging with concrete to the surface and removal of the associated surface structure. Plugging procedures utilized for exploration drill holes that wilt not be mined through during the current Permit term are as follows: I. Drill holes drilled deeper than the stripping limit (450-500 feet) will be plugged by pumping cement or heavy solids bentonite Plug Gel or chips through the drill stem from the bottom up to within 3 feet of the ground surface. 2. Drill holes shallower than stripping limits (450-500 feet) may be plugged with the ready-mix concrete method instead the method in #l to within 3 feet of the ground surface. 3. Drill holes with no water or coal zones may be plugged by backfilling with cuttings, and placing a plug ten feet below the ground surface to support a cement plug or bentonite chips to within 3 feet of the ground surface. For safety considerations, exploration drill holes that will eventually be mined through during the present Permit term need only be covered with wood, plastic or other such material or otherwise bermed to prevent access. Those holes completed in aquifers will be sealed entirety with cement or other suitable sealant to within 3 feet ofthe ground surface. Where possible, the sealed holes will be marked. At times reclamation operations will cover up the sealed drill holes and marking of holes will not be possible. Within 60 days of the abandonment of a drill hole, approved drilling program or when requested by the Division, the following information wilt be submitted: 2.05-58 Revision Date: 1/23/01 Revision No.: TR-50