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• Topsoil material redistribution and associated graded spot) suitability determinations (Tab 21) <br />follow the same timetable as salvage operations. If ground conditions permit, topsoil <br />material redistribution may be conducted in months other than the primary months indicated <br />on Figure 19-1, Reclamation Timetable. Tillage and seedbed preparation (when necessary), <br />cover cropping, and seeding of topsoiled areas is conducted in the next favorable planting <br />season after topsoil redistribution, weather permitting (see Tab 22). Therefore, the schedule <br />for these activities may parallel the topsoil redistribution schedule in many cases. Tree and <br />shrub planting is performed during the late winter/early spring and tall as dormant plantings. <br />Tab 22 details the Revegetation Plan. <br />Fence construction is generally performed from April to November. Construction is <br />interrupted only by inclement weather or snowpack. <br />Maintenance and management activities are conducted throughout the year, weather and <br />snowpack conditions permitting. The timing of these activities is dependent upon the <br />specific activity. Fence maintenance and removal of any trespass livestock are generally <br />conducted from mid-spring through fall. Interseeding and any necessary reseeding is <br />• conducted in the next favorable planting season fallowing the decision to interseed or reseed. <br />Erosion monitoring is conducted after snowmelt and heavy rains, with any required repairs <br />carried out from late spring through fall. Surface stabilization and the plan for rill and gully <br />monitoring and repair are presented in Tab 22, Revegetation Plan, Occasionally, the <br />operations outlined above will be completed during winter months when mild weather <br />persists. Under normal conditions, the schedules are as presented. <br />Protected Backfillinp and Grading Schedule <br />The projected backfilling and grading schedule for the remainder of the Yoast mine life is <br />presented on Exhibit 19-1A, Backfilling and Grading Plan. The projected disturbed and <br />graded acres, by time period, are included in Table 19-1, Projected Reclamation Schedule. <br />The projections of acres graded are based upon certain basic considerations. First, the <br />backfilling and grading schedule is based upon the operation plan, coal excavation cycle <br />times, and pit configuration. Cycle times are dependent upon factors such as pit <br />configurations, excavator performance, and customer demand. The operations plan begins <br />• with a box cut within the resource area. The box cut material is usually side cast behind the <br />pit adjacent to the crop line. Due to the steep slopes in the box cut area, some of this <br />material will be spoiled ahead of the operation and rehandled during the next cut. The result <br />is areas on each side of the box cut <br />TR-25 3 Revised 6104 <br />