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Section 2:05.3. A detailed description of the chemical characteristics of soils and overburden <br />materials is presented under Sections 2.04.6 and 2.04.9. <br />For a detailed description of the special handling of spoil material and sampling programs, <br />refer to the Production Methods and Equipment Segment of this section. <br />Flammable liquids, such as oil and fuel, will be protected from spilling into other areas by <br />earthen, concrete or HDPE lined structures surrounding each storage facility. A spill <br />containment control plan has been developed to protect against spills. <br />All major equipment on the mine site will be equipped with portable fire extinguishers or <br />automatic fire suppression systems. The water truck used for dust suppression at the mine site <br />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 for use as a <br />groundwater monitoring well will be completed with casing or piezometers at sufficient <br />height above the land surface to prevent drainage of surface water or entrance of foreign <br />material into the well, and will be fitted with caps to prevent the introduction of objects other <br />than monitoring and sampling equipment. When the groundwater monitoring wells are no <br />longer needed or required for any purpose, each well will be eliminated by plugging with <br />concrete to the surface and removal of the associated surface structure. <br />Plugging procedures utilized for exploration drill holes that will not be mined through during <br />the current Permit term are as follows: <br />1. Drill holes drilled deeper than the stripping limit (450-500 feet) will be plugged by <br />pumping cement or heavy solids bentonite Plug Gel or chips through the drill stem <br />from the bottom up to within 3 feet of the ground surface. <br />2. Drill holes shallower than stripping limits (450-500 feet) may be plugged with the <br />ready-mix concrete method instead the method in #1 to within 3 feet of the ground <br />surface. <br />3. Drill holes with no water or coal zones may be plugged by backfilling with cuttings, <br />and placing a plug ten feet below the ground surface to support a cement plug or <br />bentonite chips to within 3 feet of the ground surface. <br />For safety considerations, exploration drill holes that will eventually be mined through during <br />the present Permit term need only be covered with wood, plastic or other such material or <br />otherwise bermed to prevent access. <br />Those holes completed in aquifers will be sealed entirely with cement or other suitable <br />sealant to within 3 feet of the ground surface. <br />Where possible, the sealed holes will be marked. At times reclamation operations will cover <br />up the sealed drill holes and marking of holes will not be possible. <br />Within 60 days of the abandonment of a drill hole, approved drilling program or when <br />requested by the Division, the following information will be submitted: <br />2.05-64 Revision Date: 3/14/08 <br />Revision No.: TR-72