Laserfiche WebLink
RULE 2 PERMITS <br />Acid -Forming and Toxic -Forming Materials <br />No significant acid-forming materials exist within the overburden soil or coal seams to be mined. <br />Therefore, Colowyo will not undertake special handling procedures as described in Section 2:05.3. <br />A detailed description of the chemical characteristics of soils and overburden materials is presented <br />under Sections 2.04.6 and 2.04.9. <br />For a detailed description of the special handling of spoil material and sampling programs, refer <br />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 earthen, <br />concrete or HDPE lined structures surrounding each storage facility. A spill containment control <br />plan has been developed to protect against spills. <br />All major equipment on the mine site will be equipped with portable fire extinguishers or automatic <br />fire suppression systems. The water truck used for dust suppression at the mine site could also be <br />used to control most fires. <br />Sealingoploration 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 height <br />above the land surface to prevent drainage of surface water or entrance of foreign material into the <br />well, and will be fitted with caps to prevent the introduction of objects other than monitoring and <br />sampling equipment. When the groundwater monitoring wells are no longer needed or required <br />for any purpose, each well will be eliminated by plugging with concrete to the surface and removal <br />of the associated surface structure. <br />Plugging procedures utilized for exploration drill holes that will not be mined through during the <br />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 from <br />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 ready - <br />mix concrete method instead the method in #1 to within 3 feet of the ground surface. <br />3. Drill holes with no water or coal zones may be plugged by backfilling with cuttings, and <br />placing a plug ten feet below the ground surface to support a cement plug or bentonite <br />chips to within 3 feet of the ground surface. <br />For safety considerations, exploration drill holes that will eventually be mined through during the <br />present Permit term need only be covered with wood, plastic or other such material or otherwise <br />bermed to prevent access. <br />Those holes completed in aquifers will be sealed entirely with cement or other suitable sealant to <br />within 3 feet of the ground surface. <br />Rule 2 Permits 2.05-39 Revision Date: 5/25/18 <br />Revision No.: RN -07 <br />