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• (6) Any drill or auger holes that are part of the mining operation shall be <br />plugged with non - combustible material, which shall prevent harmful or <br />polluting drainage. Adits and shafts should be closed, and where practicable, <br />backfilled and graded in a manner consistent with the post mining land use: <br />All adits and ventilation shafts will be closed according to the Inactive Mine Program standards <br />and specifications. We do not anticipate mine drainage or the necessity of a hydraulic plug to <br />prevent mine drainage. The workings will be filled with dewatered tails (paste backfill) with <br />cement added for structural support. Therefore, the proposed entrance closures should be <br />adequate. All drill and auger holes will be plugged with non - combustible material and sealed <br />with grout or neat cement according to DRMS approved methods. <br />(7) Maximum slopes and slope combinations shall be compatible with the <br />configuration of surrounding conditions and selected land use. In all cases <br />where a lake or pond is produced as a portion of the Reclamation Plan, all <br />slopes, unless otherwise approved by the Board or Office, shall be no steeper <br />than a ratio of 2:1 (horizontal to vertical ratio), except from 5 feet above to <br />10 feet below the expected water line where slopes shall be not steeper than <br />3:1. If a swimming area is proposed as a portion of the reclamation Plan, <br />the slopes, unless otherwise approved by the Board or Office, shall be no <br />• steeper than 5:1 through the area proposed for swimming, and a slope no <br />steeper than 2:1 elsewhere in the pond: <br />With the exception of pond #2, no other ponds will be left as part of the post mining land use. <br />(Pond two will only be left if requested by the landowner prior to site reclamation.) As stated <br />above, slopes will be AOC or less and will blend in with the surrounding topography. In <br />addition, areas adjacent to mine adits will be stable but may be steeper than 2:1. Areas steeper <br />than 2:1 will kept to a minimum. <br />(8) If the Operator's choice of reclamation is for agricultural or horticultural <br />crops which normally require the use of farm equipment, the Operator shall <br />grade so that the area can be traversed with farm machinery: <br />The post mining land use will be forest land and residential uses. <br />(9) An Operator may backfill structural fill material generated within the <br />MLRB permitted area into an excavated pit within the permit area as provided for <br />in the MLRB Permit. If an Operator intends to backfill inert structural fill <br />generated outside of the approved permit area, it is the Operator's responsibility to <br />provide the Office notice of any proposed backfill activity not identified in the <br />approved Reclamation Plan in accordance with the provision of Section 3.1.5(9): <br />• No structural fill will be imported. <br />Page 42 <br />