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7.0 Operating Plan <br />This section provides operating plan information and describes the design, reclamation, and <br />monitoring of the RPEE. <br />7.1 Operating Plan — Permit Area <br />MCC's expected daily rate of coal refuse production is expected to be approximately 2,000 to 2,500 <br />tons, on average. Refuse will primarily be generated from the West Elk Mine CPP and conveyed to <br />the refuse bin located on the RPE to the east of the CPP and Sylvester Gulch. From this bin, <br />approximately 5 to 6 truckloads per hour (20 cubic yards each truck) will be taken to the RPEE. An <br />average of 300,000 tons per year of coal refuse is expected to be compacted into the RPEE waste <br />rock pile, with a maximum of 500,000 tons anticipated in any given year. <br />7.2 Drainage Plan <br />Surface water will be diverted away from the working pad and the underdrain by maintaining <br />positive drainage of compacted lifts to temporary ditches along the west side of the working pad. <br />Temporary clearwater diversion ditches will be constructed where feasible to intercept and divert <br />drainage from as much of the undisturbed slopes as practical in No Name Gulch above the active <br />waste rock pile working pad away from the waste rock pile. Clearwater diversion is shown on the <br />permit drawings in Appendix D. Temporary sediment ditches will be constructed to drain water off <br />of the working pad to the sediment ditch located along the west side of the waste rock pile. These <br />ditches are described in more detail in Section 4.4 of this document. <br />The ditches have been and will continue to be constructed to slopes that will encourage expedient and <br />controlled drainage and reduce potential for saturating colluvium under the ditches and will minimize <br />the risk of erosion. <br />Stability of the side slopes for the temporary clearwater ditches have been and will continue to be <br />evaluated with the same procedures used for the haul roads, described in Section 4.7.2. <br />7.3 Monitoring Plan <br />A plan for general monitoring of seepage and stability conditions of the RPEE waste rock pile is <br />described in Appendix C. The plan calls for monitoring of waste rock pile conditions using the <br />35 <br />P:\Mpls\06 CO\26\06261003 MCC Refuse Pile Site Review & Permit\WorkFiles\Permit Application\2014 Revision\Exhibit 82 2014-05- <br />29.docx <br />