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_... _. ~ _ ..: ~~ wn~ N0.285 P. 2 <br />Flammable liquids,such as oil and fuel, will be protected from spilling into <br />other areas by earthen, concrete or HDPE lined structures surrounding each <br />storage Facility. A spill containment control plan has been developed to <br />protect against spills. <br />All major equipment on the mine si*_e will be equipped with portable fire <br />extinguishers or automatic fire suppression systems. The water truck used for <br />dust suppression at the mine site could also be used to control most fires. <br />Sealing of Exploration and Mine Holes <br />Exploration and mine holes which remain open for use as a water supply well or <br />for use as a groundwater monitoring well will be completed with casing or <br />piezometers at sufficient height abcve the land surface to prevent drainage of <br />surface water or entrance of foreign material into the well, and will be <br />fitted with caps to prevent the introduction of objects other than monitoring <br />and sampling equipment. When the groundwater monitoring wells are no longer <br />needed Or required for any purpose, each well will be eliminated by plugging <br />with concrete to the surface and removal of the associated surface structure. <br />Plugging procedures utilized for exploration drill holes that will not be <br />mined through during the current permit term are as follows; <br />1, Drill holes drilled deeper than the stripping limit (450-50o feet) will be <br />plugged by pumping cement or heavy solids bentonite Plug Gel or chips through <br />the drill stem from the bottom up to within 3 feet of the ground surface. <br />2. Drill holes shallower than stripping iimita (450-500 feet) may be plugged <br />with the ready-mix concrete method instead the method in #1 to within 3 feet <br />,._ of the ground surface. <br />Z• 3. Drill holes with no water or coal zones may be plugged by backfilling with <br />cuttings, and placing a plug ten feet below the ground surface to support a <br />cement plug or bentonite chips to within 3 feet of the ground surface. <br />For safety considerations, exploration drill holes that will eventually be <br />mined through during the present permit term need only be covered with wood, <br />plastic or other such material or otherwise bermed to prevent access. <br />Those holes completed in aquifers will be sealed entirely with cement or other <br />suitable sealant to within 3 feet of the ground surface. <br />Where possible, the sealed holes will be marked. At times reclamation <br />operations will cover up the sealed drill holes and marking of holes will not <br />be possible. <br />Within 60 days of the abandonmen*_ c_' a drill hole, approved drilling program <br />or when requested by the Division, the following information will be <br />submitted; <br />(~ <br />Revfsbn S+~bmitmd <br />1-23-ai <br />ReAsbn No. TfZ- So <br />2.os-5s <br />