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RULE 4 PERFORMANCE STANDARDS <br />operations where topsoil has been removed, the site will be mined through and reclaimed in accordance <br />with Section 2.05.4. <br />Revegetation of drill sites and roads will be performed by drill or by broadcast seeding with a variety of <br />native and introduced species during the late fall or early spring to produce a satisfactory vegetative cover <br />capable of stabilizing the soil surface. The affected areas will be seeded according to the mixture <br />described in Section 2.02. <br />In no case will any ephemeral, intermittent or perennial stream be diverted during the exploration <br />activities. Overland flow will be diverted, if necessary, so that erosion is controlled by ditches, water bars, <br />sedimentation ponds or other methods capable of controlling erosion and minimizing additional <br />contributions of suspended solids in the stream flow outside the exploration area. Such diversions will be <br />done in a manner that complies with all other applicable Federal and State requirements. <br />Upon completion of the hole, cuttings from the drill hole will be placed in the drill hole and the site <br />reclaimed. Some holes maybe left open and completed with piezometers, if they are needed for ground <br />water monitoring. The requirements of Section 4.07 will be met for each exploration hole. See Section <br />2.04.4, Sealing of Exploration and Mine Holes, for further information in regard to reclamation of <br />exploration holes. <br />With the exception of possible piezometers to be installed in some of the drill holes for groundwater <br />quality and quantity monitoring, all equipment related to the exploration program will be removed from <br />the exploration area when it is no longer needed for exploration. <br />During the exploration program, minimization of surface disturbance and prompt reclamation practices <br />will be utilized to eliminate sedimentation problems and any disturbance of the present hydrologic <br />balance. Water bars and ditches will be built wherever needed. Also, water from drilling operations will <br />be contained on the drill site and allowed to evaporate thus eliminating any off-site disturbance. <br />As discussed under Section 2.04.6, no acid-forming materials have been found to exist within the mine <br />plan or adjacent area. <br />A compilation of 1989-1997 Permit Area Coal Resource Confirmation/Exploration/Monitor wells and <br />Transfer of Permit Area Exploration Liability to NOI-X-95-109-05 status can be found in Exhibit 6, <br />Geological Information an Item #5. <br />Exploration taking place inside and outside of the permit area will be handled through the Notice of Intent <br />(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 boundary are <br />transferred to NOI X-95-109-5 and are managed under Coal Exploration procedures. <br />Wells drilled as an integral part of water monitoring plans identified in the PAP (Permit C-81-019) and <br />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 coring. <br />No coal will be removed or extracted for commercial sale during coal exploration. <br />Rule 4 Performance Standards 4.21-2 Revision Date: 6/23/08 <br />Revision No.: MR-91