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and page V-8, Section V.B.3 additional language was added to specify the use of the identified disposal sites "for use during operations". Section V.B.3 was also amended to include reference to disposal of facility demolition debris by burial within the disturbed area during closure. Section V.G, page V-23, was amended to change the depth of burial of portal face-ups to specify a minimum of 2' to be consistent with Rule 4.11.4(2). Figure V-1, page V-21, was also amended for this same purpose. The depth of burial of concrete pavements, footings, etc. was also amended to 2' (page V-24) to remain consistent with the regulations. Other changes to Figure V-1 include the deletion of the keyway around the lower perimeter of the seal. Similar seals have been approved and installed within the Deserado Mine under the specific authorization and oversight of the Mine Safety and Health Administration (MSHA). Additional language was also added to the figure to more closely match the wording in 30 CFR 75.1711. Sections N.C.7 and IV.C.8 (page IV-11) were amended to address the demolition and disposal associated with the overland conveyor stmctures, transfer buildings and the slot storage facility. a) Inconsistencies have been addressed as discussed above. It is inappropriate to specify details now of what and where the demolition rubble will be disposed. Various factors will influence the ultimate destination of these materials. We assume that most of the metals will be taken off site to be recycled or reused. Most of the remaining materials will be buried in the fill during reclamation. Under the "worst case scenazio" where there is no market for metals or other materials sufficient to warrant recycling, on-site disposal should be assumed. Demolition debris will be placed in the extensive fills present at the mine (the present cuts). The D Portal comprises the majority of the volume available with other areas including but not limited to the shafts, portals including the underground workings, road cuts, and slot storage. b) Acid-forming, toxic-forming, and combustible wastes (not including wood or coal/refuse) will be disposed or recycled properly off site. Other materials may be buried on site in a manner consistent with the approved permit. c) Section V.D addresses the disposal of acid-forming, toxic-forming, and combustible wastes. Other materials not exhibiting these characteristics would be suitable for disposal within the fills consistent with applicable regulations. The other materials would consist primarily of metals, plastics, rubber, concrete, wooden power poles, and asphalt. January 15, 2003 2 Permit Revision #4 Comments Blue Mountain Energy, Inc.