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Little Collom Gulch. A geotechnical report, prepared by Shannon & Wilson, dated July 30, <br />2009, has been submitted to verify the stability of the temporary stockpile (Volume 20, Exhibit <br />23, Item 1). The temporary overburden stockpile will contain approximately 245 million cubic <br />yards of material. The fill will be constructed by end dumping the overburden material in 50 to <br />100 foot lifts to form an angle -of- repose pile. The final pile will be approximately 700 feet high, <br />cresting at an elevation of approximately 7,670 feet. Upon the completion of mining in the <br />Collom Lite Pit, the material from the temporary overburden pile will be returned to the pit using <br />a truck/shovel operation. <br />VIII. Coal Mine Waste Banks - Rule 4.10 <br />Colowyo has no coal processing waste or underground development waste. <br />IX. Coal Mine Waste - Rule 4.11 <br />No water is used in the coal processing operation, except for dust suppression, and no coal <br />processing waste is produced. <br />Non -coal waste is placed in the backfill of pits in a manner consistent with the requirements of <br />Rule 4.11.4. <br />X. Slides and Damage - Rule 4.12 <br />The Permit is found to be in compliance with Rule 4.12. Because of the mining technique used, <br />natural barriers are not necessary. Slides have occurred within the Permit boundary; however, <br />none have had an adverse effect on public property, health, safety, or the environment. Slides <br />have been reclaimed as appropriate. <br />XI. Contemporaneous Reclamation - Rule 4.13 <br />The Permit is found to be in compliance with Rule 4.13. Reclamation was found to occur as <br />contemporaneously as practicable with mining operations, as further discussed in Section XII <br />below. <br />XII. Backfilling and Grading - Rule 4.14 <br />The Permit was found to be in compliance with Rule 4.14. <br />A. Operations and Reclamation Plans <br />Colowyo's mining operations plan is found in Section 2.05.3 of the Permit (Volume 1 for the <br />East Pit, West Pit, Section 16 Pit, Facilities Area and Gossard Loadout, Volume 12 for the South <br />Taylor Pit and Volume 15 for the Collom expansion area). Maps 23, 23A and 23B contain the <br />Colowyo Coal Mine C1981 -019 PR -03 56 April 10, 2013 <br />