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RULE 4 PERFORMANCE STANDARDS <br /> for ground water monitoring. The requirements of Section 4.07 will be met for each exploration <br /> hole. See Section 2.04.4, Sealing of Exploration and Mine Holes, for further information <br /> concerning reclamation of exploration holes. <br /> With the exception of possible piezometers to be installed in some of the drill holes for <br /> groundwater quality and quantity monitoring, all equipment related to the exploration program <br /> will be removed from the exploration area when it is no longer needed for exploration. <br /> During the exploration program, minimization of surface disturbance and prompt reclamation <br /> practices will be utilized to eliminate sedimentation problems and any disturbance of the present <br /> hydrologic balance.Water bars and ditches will be built wherever needed. In addition,water from <br /> drilling operations will be contained on the drill site and allowed to evaporate thus eliminating any <br /> off-site disturbance. <br /> As discussed under Section 2.04.6, no acid-forming materials have been found to exist within the <br /> mine plan or adjacent area. <br /> A compilation of 1989-1997 Permit Area Coal Resource Confirmation/Exploration/Monitor wells <br /> and Transfer of Permit Area Exploration Liability to NOI-X-95-109-05 status can be found in <br /> Exhibit 6, Geological Information an Item#5. <br /> Exploration taking place inside and outside of the permit area will be handled through the Notice <br /> of Intent(NOI)procedures. Se the appropriate NOI for details for each program. <br /> With the approval of Technical revision 50, all exploration holes located within the permit <br /> boundary are transferred to NOI X-95-109-5 and are managed under Coal Exploration procedures. <br /> Wells drilled as an integral part ofwater monitoring plans identified in the PAP(Permit C-81-019) <br /> and water supply wells (for mining purposes) are managed under this Permit C-81-019. <br /> 4.21.5 Requirements for a Permit <br /> No coal will be removed or extracted by the proposed coal exploration other than occasional spot <br /> coring. No coal will be removed or extracted for commercial sale during coal exploration. <br /> 4.22 Concurrent Surface and Underground Mining <br /> Colowyo does not currently plan to have concurrent surface or underground mining activities; <br /> therefore,the requirements of this Section are not applicable to this permit application. <br /> Rule 4 Performance Standards 4-86 Revision Date: 11/18/19 <br /> Revision No.: MR-211 <br />