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I <br />I Battle Mountain Reaourcee, Inc. <br />l l2 Permit Modification <br />I of the removal of vegetation and topsoil ahead of the advancing waste rock <br />fill. No additional special foundation preparation is cgnsidered necessary. <br />Upon completion of construction, each waste rock lift will be regraded to <br />I reduce the slope angle between benches. The overall sl~pe angle of 3H:1 V <br />will be maintained. A 15-ft wide reclamation bench wiQl be maintained on <br />I each of the horizontal setbacks for access during reclamation. <br />' The stability analyses conducted for the proposed aste rock facilities <br />are discussed in Section D.3.5 of this document. De ed information on <br />construction requirements, such as clearing and strippi g, is presented in <br />' Appendtz N of the approved permit. <br />Partial backfilling of the West Pit will be compl~ted as described in <br />I Section D.3.2.3. Waste rock will be placed using the nine haul trucks and <br />~IIdozers for spreading. Compaction will be achieved ugh the routing of <br />~~~(~µal~loaded and empty haul trucks during backfill placeme t. Controlled lift <br />' f-E-:J !~ ~ thicknesses will be employed to maximize compacted d nsrty and minimize <br />0 ~ ~ ~ future settlement potential. Establishment of suitable l~ thickness will be <br />I a,S~~~ based on test fills constructed in the pit during the tart of reclamation <br />activities. The final backfill surface will slope gently from the north and east <br />to the low azea of the pit near the creek. <br />D.3.4.2 Waste Rock Digyosal Area Construction Sleauence <br />I The mining sequence is the same as that presented in the approved <br />I permit. Waste rock disposal will occur in the same seq ence except that all <br />of the waste rock scheduled to be disposed of in Waste Mock Disposal Area <br />A, and the majority of the waste scheduled to be dispo~ed of in the South <br />I Waste Rock Disposal Area, will be used to partially backfill the West Pit. <br />' The proposed quantities and general schedule fort revised waste rock <br />disposal for the remaining mine life are shown Qn Table D.3.4-1. <br />Approximately 310,000 ions of waste rock from the D West Pit will be <br />' disposed of in the South Waste Rock Disposal Area. a remaining waste <br />rock in the Deep West Pit, approximately 864,000 tons,~will be temporarily <br />' stockpiled on Waste Rock Disposal Area B. <br />ay p_It sect o. _ <br />