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Division's response: This response is Complete. <br />4. Diversion designs are required for the Horse Gulch and K Area Buttress fills per Rules <br />2.05.6(3), 4.05.3, 4.09.2(5) and 4.09.2(7) which pertain to the protection of the hydrologic <br />balance and the utilization of diversions on excess spoil fills. <br />Trapper Mining Inc. 's response: Drainage for the Horse Gulch Fill is addresses in Section 4.4 <br />of the attached AAI report entitled Horse Gulch Fill Stability Analysis. No extraordinary <br />drainage requirements are envisioned for the K Pit Buttress fill area. <br />Division's response: This response is Incomplete. Although the Horse Gulch Fill Stability <br />Analysis speaks to the need for diversion drainage of Horse Gulch fill, diversion designs <br />were not include with the submittal. Please submit diversion designs per Rules 2.05.6(3), <br />4.05.3, 4.09.2(5) and 4.09.2(7) which pertains to the protection of the hydrologic balance <br />and the utilization of diversion on excess spoil fills, in reference to the Horse Gulch fill. <br />5. In accordance with the requirements of Rules 2.05.3(6), 4.09.1(13), 4.09.2(2) and 4.09.3, please <br />provide a narrative discussing whether subdrainage/underdrainage systems will be needed for <br />the Horse Gulch Fill and K Pit Buttress Fill. <br />Trapper Mining Inc. 's response: An underdrain system is required for the Horse Gulch Fill. <br />Design parameters for this system are discussed in Section 4 of the attached, certified AAI <br />report entitled Horse Gulch Fill Stability Analysis. An underdrain system is not required for <br />the K-Pit Buttress fill. <br />Division's response: This response is Complete. <br />6. In accordance with the requirements of Rule 2.05.3(6)(d), please provide the information <br />required for rock toe buttress for the K Area Buttress Fill <br />Trapper Mining Inc. 's response: A complete, certified design for the K-Pit Buttress Fill is <br />provided in the attached AAI report entitled K-Pit Buttress Fill Stability Analysis. <br />Division's response: This response is Complete. <br />7. Rule 4.09.2(1) states that excess spoil fills shall be designed to attain a long-term static safety <br />factor of 1.5 based upon data obtained from subsurface exploration, geotechnical testing, <br />foundation design, and accepted engineering analyses. Please provide a discussion of the <br />safety factor of the proposed Horse and Buttress fills will be 1.5 <br />Trapper Mining Inc. 's response: Factor of Safety calculations are provided in Section 3.0 of <br />the certified AAI reports entitled K-Pit Buttress Fill Stability Analysis. <br />Division's response: This response is Complete.