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RULE 4 PERFORMANCE STANDARDS <br />Colowyo will maintain haul roads A, B and the new South Taylor Haul Road throughout the life of the <br />mine with repairs including blading, filling of potholes, and replacement of road surface as necessary. <br />Likewise, watering for dust control will be implemented as necessary. <br />Section 2.05.5 discusses the changes to be made to the main haul road, a portion of which will be left in <br />place after completion of mining to retain access into the area to compliment the post mining land use. <br />4.03.2 Access Roads <br />The original permitted status of the section of road from State Highway 13 to the Gossard turnoff, was <br />that of an access road. The June, 1992 technical revision changed the technical status from that of an <br />access road, to that of a haul road. Since the segment of road was built to the same specifications as that <br />of the initial main haul road, no additional modifications were necessary other than continued routine <br />maintenance. <br />While Tri State never used haul road B to transport coal other customers have used the road to transport <br />coal by highway truck. We anticipate that it is likely that such truck shipments of coal will continue to <br />occur from Colowyo. Should highway truck transportation of coal cease we anticipate that the status of <br />haul road B could technically be changed back to the original access road status. <br />4.03.3 Light -Use Roads <br />The location of light -use roads will be determined on the basis of the progress of the mining operation and <br />specific design and environmental considerations. Typical light -use roads will be "access" roads of recent <br />construction in the pit areas for blasting and maintenance, exploration roads, and reclamation access <br />roads. <br />Light -use roads, whether in the pit or other areas, will be constructed using the best technology currently <br />available, to the extent possible, to avoid damage to fish, wildlife, and related environmental values and to <br />prevent additional contribution of suspended solids to runoff outside the permit area. Roads in the pit <br />areas will be constructed on an already disturbed material. Reclamation access roads and exploration <br />roads will be restored immediately after they are no longer needed. Information contained in Section <br />2.05.6 reveals that no fish and wildlife damage will result from mining operations, including the <br />construction or operation of light -use roads. <br />All light -use roads will be completely removed, regraded, and revegetated when they are no longer <br />needed for operations, reclamation or monitoring. The light -use roads will be used by pick -ups, light -duty <br />service trucks, track- mounted overburden drilling rigs and tractors. <br />The location of the light -use roads will be determined largely by the immediate need of the mining <br />operations. They will not be located in the channel of any major drainage unless specifically approved by <br />the Division. <br />Light -use road construction will generally require no topsoil removal. Roads in pit areas will already have <br />been pre - stripped of topsoil for mining and the construction of exploration roads will only require <br />removal of any large vegetation. <br />Light -use road maintenance will include maintaining natural drainages across the roadway and periodic <br />dozing to remove loose material which might contribute to sedimentation or road instability. <br />Rule 4 Performance Standards 4.03 -2 Revision Date: 7/27/09 <br />Revision No.: TR -76 <br />