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• 1.0 PHASE I BOND RELEASE <br />This application for Phase I bond release of applicable Trapper Mine lands is submitted in accordance <br />with the Colorado Division of Reclamation, Mining and Safety (DRMS) Rule 3.03 (Release of <br />Performance Bonds) and Guideline Regarding Selected Coal Mine Bond Release Issues of April 18, <br />1995. With this submittal, Trapper is proposing to release 57.8 acres of land, reclaimed during 2008, <br />from Phase I bond liability as outlined on Map 1.0. This includes all lands that have been regraded, with <br />drainages reestablished in accordance with Trapper's approved permit document (C-81-010), as outlined <br />on Map 1.0. <br />While Map 1.0 breaks out major watershed boundaries, the single block proposed for bond release <br />encompasses all recontoured watersheds as outlined. All reclaimed parcels that are included within this <br />Phase I bond release block are included on Map 1.0. <br />1.1 Post-mining Topography Demonstration <br />Map 1.0 provides as-built post-mining topography contours for all Trapper Mine lands regraded through <br />2008. The map was constructed from aerial photogrammetry data collected in October 2008. Post- <br />mining topography has been presented to and approved by the Division in the 2008 annual report <br />(Technical Revision, TR-104), the year that reclaimed land parcels are included in this bond release <br />request. Representative cross sections comparing as-built topography with approved topography would <br />be the same as those given in Permit Document C-81-010; therefore, no cross sections are included in <br />this application. <br />1.2 Drainage Reestablishment Documentation <br />As explained in Section 1.1 for topographic cross-sections, drainage profiles comparing as-built and <br />approved drainage profiles will likewise be the same as those given in C-81-010. All reestablished <br />drainages are delineated on Map 1.0. <br />Trapper Mine has spared no effort and expense in constructing reestablished drainages that effectively <br />control erosion and downstream sediment deposition. A variety of sediment control materials and <br />methods and sediment reducing measures have been implemented on reestablished drainages. <br />Rock check structures are used to dissipate the energy of flowing water within drainage channels. Debris <br />and sediment tend to be deposited and trapped upstream of structures. This in turn permits <br />• establishment of vegetation behind structures which further stabilizes the channels. In addition, core <br />trenches are installed in rock check structures, thus providing additional structural support and reducing <br />the potential of downstream headcutting to move upstream. <br />1