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RULE 4 PERFORMANCE STANDARDS <br />In addition, each of the spoil pile designs (West Taylor and East Taylor Fills) contain further information <br />regarding other stability analyses that have been performed. These include additional information <br />regarding material properties, hydrologic assumptions, and laboratory testing results that have been <br />performed as components of the stability analyses. See Section 2.05.3 and Exhibit 19 for more <br />information. <br />4.28 FACILITIES NOT LOCATED AT THE MINESITE <br />This section is not applicable to the permit revision. All facilities used by Colowyo in their current <br />operations will continue to be used for the South Taylor mining operations. <br />4.29 IN SITU PROCESSING <br />This section is not applicable. <br />4.30 CESSATION OF OPERATIONS <br />4.30.1 Temporary <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 <br />the Division a notice of intention to temporarily cease or abandon mining and reclamation activities. This <br />notice will include a statement of the exact number of acres which will have been affected in the permit <br />area prior to temporary cessation, the accomplished, an identification of back filling, regarding, <br />revegetation, environmental monitoring, and water treatment activities that will continue during <br />temporary cessation. <br />4.30.2 Permanent <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 <br />projected post- mining topography is set forth on the Post - mining Topography maps (maps 19A and 1913). <br />Colowyo will remove any equipment, structures, or other facilities at the conclusion of mining activities <br />and will reclaim the affected land. <br />South Taylor /Lower Wilson — Rule 4, Page 32 Revision Date: 5/31/10 <br />Revision No.: TR -81 <br />