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5, <br />A light-use road and a permanent road will be used to access the substation. The light-use road will run 4,800 feet <br />to the substation and will follow the existing "fence" road. The light-use road will be designed per the <br />requirements of Rule 4.03.3, Light-Use Roads. The light-use road will be sufficiently maintained in order to assure <br />erosion control. Surfacing of the road will be adequate for the general use of the road, and will be compatible with <br />winter and spring, snow removal requirements. Access to the light-use road and substation will also require the <br />utilization of a permanent road approved by the CMLRD on February 3, 1988 (Technical Revision TR87-12; <br />Permit C-81-071). This permanent road runs 12,000 feet from Country Road #27 and is maintained under CYCC's <br />Permit C-81-071. The roads will be maintained by TCC. Upon substation removal, the light-use road will remain <br />as part of the approved postmining use of ranch management. The light-use and permanent road are shown on Map <br />39, Substation and Powerline Location. <br />A light-use road will be used to access a subsidence borehole meter at Mine 2 (MR89-37). The road will be <br />reclaimed on completion of the subsidence borehole metering. <br />6. Light-Use Road to 6MN Mine Water Storage Reservoir <br />A light-use road will access the 6MN Mine Water Storage Reservoir, for inspection and maintenance purposes. <br />The light-use road will run approximately 130 feet from the existing 6MN Ventilation Shaft Installation access <br />road. The light-use road is designed per the requirements of Rule 4.03.3, Light-Use Roads, will be approximately <br />20 feet wide, with an overall grade of 0.7 percent, and is designed with a 6-inch compacted road-base base course, <br />and 3-inch gravel surfacing. The location of the road, and road configuration and cross-section, are shown on the <br />design drawings included in Exhibit 490. The light-use road will be maintained on a periodic basis to assure its <br />suitability for use and effective erosion control. Surfacing of the road will be adequate for the general use of the <br />road, and will be compatible with winter and spring, snow removal requirements. At such time as the 6MN <br />Reservoir is no longer needed, the light-use road will be removed and the associated disturbance area reclaimed. <br />7. Light-Use Road to 18-Left Ventilation Shaft Installation <br />A light-use road will access the 18-Left Ventilation Shaft Installation, for inspection and maintenance purposes. <br />The light-use road will run approximately 420 feet from Routt County Road 27. The light-use road is designed per <br />the requirements of Rule 4.03.3, Light-Use Roads, will be approximately 24 feet wide, with an overall grade of 0.0 <br />percent, and is designed with a 18-inch compacted pit run base course, and 6-inch road base and/or gravel <br />surfacing. The location of the road, and road configuration and cross-section, are shown on the design drawings <br />included in Exhibit 49R. The light-use road will be maintained on a periodic basis to assure its suitability for use <br />and effective erosion control. Surfacing of the road will be adequate for the general use of the road, and will be <br />compatible with winter and spring, snow removal requirements. At such time as the 18-Left Ventilation Shaft <br />Installation is no longer needed, the light-use road will be removed and the associated disturbance area reclaimed. <br />8. Other Light-Use Roads <br />In addition to the above light-use roads, a number of other roads of this classification are located around the <br />property. The other roads include the following: Low Quality Coal Stockpile Road, West Gate Road, Fish Creek <br />Borehole Road, Escape Shaft/Borehole Site Road, EMD Dewatering Borehole Road, and Lieske Substation Road. <br />All of these roads are shown on Map 24A and have been designed and constructed in conformance with Rule <br />4.03.3. <br />General <br />No bridges are planned with this permit revision application. All culverts with an end area of less than 35 square <br />feet will be designed to pass, at a minimum, the 10-year, 24-hour event. Should a culvert with an end area greater <br />than 35 square feet be needed, it will be designed to safety pass the 20-year, 24-hour event. The culverts have also <br />TR09-66 2.05-74.2 02/17/09 <br />