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RULE 2 PERMITS <br /> <br />Rule 2 Permits 2.05-24 Revision Date: 8/6/25 <br /> Revision No.: PR-05 <br />Measures for Determining Success of Revegetation <br /> <br />Measures for determining successful revegetation are outlined in Section 4.15. <br /> <br />Soil Testing Plan <br /> <br />From conception to the mid-1990’s, Colowyo tested for topsoil fertility. In order to assure that the <br />reapplied topsoil would support the proposed post-mining land use of rangeland, a soil sampling <br />program wase implemented. Soil samples were taken randomly over each retopsoiled area and <br />were analyzed for nitrate-nitrogen, phosphorus, and potassium. Historical results indicated <br />adequate nutrient value to support post-mining revegetation. <br /> <br />Colowyo has demonstrated through numerous years of monitoring that topsoil fertility is not a <br />concern at the mine; this is mainly due to the nutrient rich soil that is commonly present throughout <br />the region. As a result, Colowyo has suspended the soil testing program requirements, until such <br />time as Colowyo determines that the soil fertility adversely affects the reclamation and/or the post- <br />mining land use. <br /> <br />As needed, other soil amendments could be considered for addition to the reclaimed areas to <br />support reclamation efforts. <br /> <br />Acid-Forming and Toxic-Forming Materials <br /> <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 /> <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 /> <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 /> <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 /> <br />Sealing of Exploration and Mine Holes <br /> <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