2012-11-15_REVISION - C1982057 (3)

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Seneca Coal Company Seneca It W Mine SL-4 - Phase I Bond Release Request November 2012 Pond 016/016A Remediation Area The Pond 016 Slide Area remediation activities were conducted during the 2011 and 2012 construction seasons and were based on an approved design package. The actual locations of some components were field fit, but the overall design criteria were adhered to. There were a number of factors involved with stabilizing the area: • A portion of permanent Road J/K was relocated • Pond 016 slide material was removed and the cut slope stabilized • Shrub Plot slump was regraded and material excavated to increase stabilization • Pond 016A was backfilled with the material removed from the unstable areas • Permanent Channel PM -2 was relocated and extended through the Pond 016A area The remediation activities are presented in detail in the permit document in Attachment 20 -D, Pond 016 Slide Area Construction Summary. The location of this area is shown on attached Exhibit B, Postmining Topography and Drainage Map. Shop Area The existing shop building is proposed a permanent facility to be used for maintenance and storage of agricultural and maintenance equipment and materials. The storage yard would provide additional parking and storage of materials for the maintenance and upkeep of the Seneca controlled property following final reclamation. The shop facility and outside storage area will provide a year -round facility for on -going maintenance, monitoring and upkeep for the Seneca controlled properties during final reclamation. Following bond release the building will be used for maintenance and storage of agricultural equipment and storage of agricultural supplies. Landowner request letter is contained in Appendix 20 -2.1 of permit document. The area is 2.7 acres in size and contains the shop building, storage area and electric transformer. The location of this facility is shown on attached Exhibit B, Postmining Topography and Drainage Map. Water Well The existing Seneca II -W Mine Shop Well was installed to supply domestic and industrial water for the II -W shop and bath house facility and has been permitted by the Division of Water Resources. This well will be permanently retained to supply water, as necessary, for agricultural maintenance and other land owner uses as identified in the future. The location of this facility is shown on attached Exhibit B, Postmining Topography and Drainage Map. Postmine Channel PM - 2D This channel was excluded from the previous SL -3 bond release due to excessive erosion from the spring runoff event. The channel has been repaired with the placement of riprap and gabions to control the velocity of future runoff. The location of this channel is shown on attached Exhibit B, Postmining Topography and Drainage Map. SL-4 -5