2021-04-05_PERMIT FILE - C1981019A (21)

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RULE 2 PERMITS The topography following mining and reclamation activities is shown on the Postmining Topography Map (Map 19). Cross sections relating the premining and postmining topographic configurations are presented as the Premining and Postmining Cross Section Maps (Maps 20 and 20A). Coal Handling Structures Map 1 Surface ownership shows pre-mining contours and Map 19A Postmining Topography Gossard Area shows post-mining contours of the loadout. All facilities not to be included as part of the post-mining land use will be removed(see Section 2.05.5). After the facilities are removed, the land will be regraded to blend with the existing undisturbed topography, retopsoiled and revegetated in accordance with Section 2.05.4. The detailed description of the various coal crushing, handling and loadout facilities for the Colowyo operation is found under the Mine Facilities Section in 2.05.3. The location of the coal processing facilities is found on the Existing Structures - North Map (Map 21), the Existing Structures - South Map (Map 22) and the Existing Structures- Lower Wilson/South Taylor Map (Map 22A). Coal Processing Waste and Non-Coal Processing Waste Not applicable. Colowyo uses dry crushing facility for coal preparation; no coal processing waste, as defined in Rule 1.04 "DEFINITIONS", is produced from any part of the mining operations. Underground Development Waste Not applicable. Colowyo is not conducting an underground operation. Return of Coal Processing Waste to Abandon Workings Not applicable. No coal processing waste as defined in Rule 1.04 "DEFINITIONS", is produced from any part of the Colowyo mining operations. 2.05.4 Reclamation Plan The objective of the reclamation plan is to stabilize the soil, maintain hydrologic function, re- establish appropriate vegetation,and to restore the approximate original contour of the mined area. Ultimately, the areas being mined will be returned to an appropriate and productive post-mining land use, with watersheds having their approximate pre-mining character. In general, the long term appearance and beneficial uses of the mined area will be similar to that which would have been encountered prior to mining activity. The principal basis of Colowyo's reclamation plan is to rebuild a post mine landscape that mimics the natural terrain features, accounting for local slope aspects, steepness,and topographic features. By incorporating variation in the terrain,the reclamation system will encourage the establishment, sucession, and persistence of mixed native vegetation communities. These efforts will facilitate Rule 2 Permits 2.05-16 Revision Date: 10/27/20 Revision No.: TR-143