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<br />2. All supporting information, assumptions and calculations for deter- <br />minating the correct size of temporary diversions and ditches must be supplied <br />to satisfy 2.05.3(9)(a) and (d). Please submit this information. <br />3. Although maps of individual areas available, the relative positions of <br />the surface water controls and structures are difficult to visualize. An <br />overall map of the mining operation must be provided. This map should <br />show the relative locations of all surface and ground water monitoring sites, <br />the waste rock fill, all sediment control structures, and the proximity of <br />major drainages. <br />2.05.3(5) Topsoil <br />This section of the Regulations specifically states that the applicant <br />must "specify the volume of each type of material to be salvaged." The <br />topsoil material to be stockpiled must be identified with respect to <br />depth, horizon and mapping unit as presented in Section 9.7 of the <br />application. Please provide this information. <br />2.05.3(9) Underground Development Waste <br />1. This permit application proposed the placement of development waste <br />from the McClane Canyon operations of Sheridan Enterprises within the II C G '~ <br />~ / Munger operation's underground development waste disposal fill. This c~-~ <br />requires a specific variance to be granted. Rule 2.04.3(6) and 9.09 (~ f <br />limit disposal to within the s ecific J ~ mp ~~ <br />p permit area in which the waste G1 ~ O~ <br />is generated. ~~. <br />2. The second paragraph on page 2-31 of the application includes the <br />statement that the topography of the site of the disposal pile ranges <br />from slopes of 1 vertical: 2 horizontal to 1 vertical: 1 horizontal. <br />Rule 9.09.1 (1 O) of the permanent regulatory program requires that key- <br />way cuts excavated to stable bedrock or rock toe buttress be installed <br />to help stablize any fill on a slope which exceeds 1 vertical to 2.8 <br />horizontal (36~). <br />3. No geotechnical analysis of the development waste material is pre- <br />sented in the application. Rule 2.05.3(6)(c) requires the inclusion <br />of a geotechnical analysis including a stability analysis of the proposed <br />underground development waste pile in the permit application. The <br />statement included on page 2-3I of the application that; "when fill is <br />spread in 2-thick Foot lifts, the resulting compaction will be adequate <br />to provide and maintain a safe and stable slope at 1 vertical: 3 horizontal", <br />is not adequate to satisfy the requirements of the permanent regulatory <br />program. <br />Q. The geotechnical analysis of the proposed development waste fill <br />should include a thorough auger or boring investigation of the foundational <br />area designed to determine bedrock, soil and hydrogeological conditions <br />encountered. The report should also include geologic profiles, material <br />testing and description of materials encountered, and a mathematical <br />stability analysis of the slope static safety factors of the fill proposed <br />to be constructed. That analysis should include through discussion any <br />(71 <br />