2024-09-16_REVISION - C1981019 (4)

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Colowyo Coal Company L.P. SL-23 Phase I - III Bond Release Application Page 4 III. Summary of Reclamation and Management A. General Description The areas being applied for bond release are an impoundment (Streeter Pond) and post mine channel (Streeter Ditch). Both structures will remain as a permanent structures post-mine in their current as-built configuration. The 5.5 acres including both structures being applied for bond release are shown on Map 1. The Streeter Ditch is proposed for Phase I, II, and III bond release from Station 0+00 to 68+41 as shown on Map 1. Design details for the Streeter Ditch can be found in Permit No. C-1981-008, Volume 2C, Exhibit 7 Item 14, and the profile for the channel is located on Map 33. The Streeter Pond proposed for Phase I, II, and III bond release has been requested by the surface landowner to remain permanently post-mine. Please refer to Volume 1, Section 4.05.9 Impoundments and Volume 2B, Exhibit 3 for additional information pertaining to the surface landowners request. The as-built condition for the Streeter Pond can be located on Figure Exh. 7-14P-1. The previously cited information is located in Permit No. C-1981-008. The ten-year minimum bond liability period is not applicable for a permanent impoundment and post-mine channel. B. Topsoil Replacement The applicability of Rule 4.06.4 does not apply to permanent impoundments and post-mine channels. C. Revegetation Success Demonstration The applicability of Rule 4.15.8 does not apply to permanent impoundments and post-mine channels. D. Post-Mining Land Use The surface landowner has requested to retain the Streeter Pond as a permanent structure on their property, and the Streeter Ditch is a permanent post-mine channel that is designed and constructed to remain in the post-mine surface. Both the Streeter Pond and Ditch support the post mine land use of wildlife and rangeland by providing a water conveyance structure and water source post-mine.