2008-12-04_PERMIT FILE - C1994082 (37)

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l TABLE 19-1 PROJECTED RECLAMATION SCHEDULE Mining Period Permitted Disturbance (cumulative ac)' Reclamation Period Actual/Projected Disturbed Area Reclamation (ac s 1995-1999 977.0 2000-2001 989.6 2002-2003 1,019.0 1995-2003 233.3 2004+ 1,019.0 2004 64.5 21705 96.6 2006 182.0 2007 233.4 2008+ --- / 38.8 Total Permitted 1,019.0 (Actual 848.6) 809.8/848.6 Notes: Actual acres disturbed and reclaimed are from Annual Reclamation reports. ' Cumulative permitted disturbance acres -corresponds to current aerial photography. x Reclamation areas reflect acreages reported in the Annual Reclamation Reports. a Reclamation Period 2008+ includes road corridors and ponds. a The difference in acreages between "Permitted Disturbance" and "ActuallProjected Disturbed Area Reclamation" reflects areas that were permitted to be disturbed but which were never actual/ disturbed that will receive spoil material during the excavation process, and cannot be final graded until excavation advances away from the box cut area. Further discussion of this situation is presented in Tab 12 and 20. In order to achieve the designed postmining landform, the necessary backfill material must be available to pertomt area grading on internal spoil. Generally, adequate material will not be available until excavation has developed at least two spoils. However, Rule 4.14.1(1)(c) allows up to four spoil ridges behind the pit being worked. When the pit configuration is regular (e.g., typically, interior spoil), and where sufficient area is available (i.e.: long, straight pits) to perform "area grading", Seneca strives to maintain backfilling and grading within two spoil rows. Under these conditions, it takes approximately 90 to 120 days to cycle the dragline from one end of an active pit and back, creating two spoil rows. Due, however, to coal market and operation considerations, it is periodically required to also cycle the dragline from the south to the north and back to access an upper spoil bench or to perform rehandle operations. This can add 60 to 90 days to the dragline cycle before a single spoil row is created. Therefore, due to the depth of overburden, and configuration and length of the pit, it can take over one year to generate four spoil rows. This typical cycle has been drastically reduced since 2003 due to the limited areas of remaining reserve and the pit arientations required due to steep grades. • Four spoil peaks will also be created by other mining situations. First, in certain locations such as along the ramps and the haul road, in the box cut spoil area, along certain inside or outside cunr s, along irregular TR-37 „~ ~ Rea~osed 01/08