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RULE 4 PERFORMANCE STANDARDS <br /> <br />South Taylor – Rule 4, Page 15 Revision Date: 7/21/25 <br /> Revision No.: MR-267 <br /> <br /> <br />4.27 OPERATIONS ON STEEP SLOPES <br /> <br />No operations at Colowyo will be conducted on steep slopes as defined in this section. <br /> <br />4.28 FACILITIES NOT LOCATED AT THE MINESITE <br /> <br />This section is not applicable to the permit revision. All facilities used by Colowyo in their current operations <br />will continue to be used for the South Taylor mining operations. <br /> <br />4.29 IN SITU PROCESSING <br /> <br />This section is not applicable. <br /> <br />4.30 CESSATION OF OPERATIONS <br /> <br />4.30.1 Temporary <br /> <br />If, for any unforeseeable circumstances, temporary cessation of mining and reclamation operations at the <br />Colowyo operation becomes necessary for a period of thirty (30) days or more, Colowyo will submit to the <br />Division a notice of intention to temporarily cease or abandon mining and reclamation activities. This notice <br />will include a statement of the exact number of acres which will have been affected in the permit area prior to <br />temporary cessation, the accomplished, an identification of back filling, regarding, revegetation, <br />environmental monitoring, and water treatment activities that will continue during temporary cessation. <br /> <br />4.30.2 Permanent <br /> <br />At the permanent conclusion of surface mining operations, Colowyo will close, backfill, or otherwise <br />permanently reclaim all affected areas. The reclamation plans are set forth in Section 2.05.5. The projected <br />post-mining topography is set forth on the Post-mining Topography maps (maps 19A and 19B). <br /> <br />Colowyo will remove any equipment, structures, or other facilities at the conclusion of mining activities and <br />will reclaim the affected land. <br />