2019-06-25_REVISION - C1981035 - Laserfiche WebLink

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GCC GCC Energy, LLC Telephone: 970.385.4528 6473 County Road 120 Energy "Safety as a Value" Facsimile: 970.385.4638 Hesperus, CO 81326 12.Rule 2.05.6(3)(a) states: "Each application shall contain a detailed description .. of the measures to be taken during and after the proposed surface or underground mining activities ... to ensure the protection of ... The quality of surface and ground water ..." The drainage management plan has changed considerably due to the new plan for the refuse area at the King I site. Therefore the drainage report, Appendix 11(1), should be updated also. The plan should discuss the drainage plan prior to reclamation as well as the plan for after reclamation. Some of the parameters discussed in the drainage report may stay the same, but others may need to be revised. New figures with drainage areas and structures should be created to replace the old ones. Figure 2 of the current report, for example, no longer matches the plan for open ditches, culverts, and other features at King I. GCCE June 25, 2019: Appendix II(IA), "Stoner Engineering Revision 5 (with Revised Figure 2) to Appendix 11(1) Hydrologic and Hydraulic Design of Sedimentation Ponds and Other Drainage Features for National King Coal Mine; Don May, P.E." has been added to address revised parameters the Appendix 11(1) drainage report. 13.Does the upper(flatter)part of the new refuse pile drain to the back? (This is implied by the arrow next to "Min 1%" on the N-S Section.)If so, what ditch does it drain to? This should be discussed in the updated drainage report. GCCE June 25, 2019: The upper (flatter) portion of the new refuse pile does drain to the back, to Reach 10 of the treated water ditch. The lower portion of Reach 10 will be required to be rerouted around the south and west sides of the proposed waste pile expansion. This will allow the surface flows to be directed away from the face of the proposed waste pile expansion in accordance with Section 4.09.2(5). The surface flows will be collected in the relocated section of Reach 10 and routed around the waste pile expansion. Maps 14.Please confirm the location of the Topsoil Borrow Area on Map King I-007. There is no polygon (outline) of the area on the map. Per Brock Bowles, there is also some uncertainty regarding the history and management of this area. Has material been borrowed from this area in the past? Will it be protected from waste material? GCCE June 25, 2019: Polygons have been added to Map King I-007 to show the "Topsoil Borrow Area" and the "Plant Growth Medium Storage Area". To our knowledge, material has not been borrowed from this area in the past. However, the Plant Growth Medium Storage Area was placed on top of part of the Topsoil Borrow Area. The Plant Growth Medium Storage Area is protected by a berm and seeded to reduce possible erosion. The Topsoil Borrow Area is largely inaccessible by machinery and has been mostly undisturbed since it was placed in the late 1970s. 15.The profile of the proposed haul road expansion has been provided under Map King I- 007B, which meets all requirements found under Rule 4.03.1. However, the proposed profile only shows the proposed section of the haul road expansion and there is no profile