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RULE 2 PERMITS <br />In order to access the Section 28 Sediment Pond during construction and to access this area for routine <br />monitoring and maintenance operations, the existing two -track Sturgeon Road will be upgraded. See <br />Section 4.03 for construction requirements and Map 25B for road design information. <br />2.05.3 (4) Operation Plan — Ponds, Impoundments, and Diversions <br />To control runoff, and protect surface and ground water quality, Colowyo will construct several new <br />sedimentation structures and diversion ditches. The designs for these features are presented in Exhibit 7, <br />Item 20. All ponds, impoundments, and diversions are designed to meet or exceed the requirements of <br />2.05.3(4) and 4.05.6. All sediment ponds will be constructed and maintained in accordance with the <br />parameters mentioned in Volume 1, Section 2.05. Impoundments will be inspected quarterly as discussed <br />in Section 4.05.6. <br />2.05.3 (5) Topsoil <br />Prior to any mining related disturbances, topsoil will be removed from the site to be disturbed as <br />discussed in Volume 1, Section 2.05 and Section 4.06 and redistributed or stockpiled as necessary to <br />satisfy the needs of the reclamation timetable. <br />Topsoil will be removed in the permit area by large crawler mounted bulldozers, loaders or scrapers as <br />described in Volume 1, Section 2.05.3. <br />The sequence and timetable for all topsoil redistribution and revegetation activities is found on the <br />Topsoil Handling Map (Map 2813). The overall life -of -mine topsoil balance is estimated in Volume 1, <br />Table 2.05-1. <br />All yardage and acreage figures have beeb calculated based upon the assumption that topsoil would be <br />removed in advance of mining activities as shown on Topsoil Handling Map (Map 2813). <br />Mine development into the South Taylor area required an initial boxcut, resulting in additional stockpiling <br />of topsoil. The stockpiling of topsoil will continue until all pit development has progressed to its <br />maximum extent. After mining and regrading operations have ceased, all stockpiled topsoil will be used <br />to reclaim the pit disturbance. <br />Topsoil will be stored in topsoil stockpiles as shown on Map 28A. Construction specifications for these <br />stockpiles will follow all prudent regulations within this section (2.05.3(5)) and as follows. Stockpiles <br />will be constructed with stable slopes and will be located to avoid erosion from wind and water and <br />additional compaction or contamination. As can be determined from the Topsoil Handling Map (Map <br />2813), all stockpiles are located within stable areas. The piles will be protected from wind erosion by <br />planting a perennial mixture as explained in Section 4.06.3 as soon as conditions allow. Proper seasons of <br />planting will be early spring or late fall. In addition to the planted material, a considerable amount of <br />volunteer growth can be expected to grow on all stockpiled topsoil. <br />External erosion will be controlled through proper location of the stockpiles. No topsoil stockpiles will be <br />placed in a drainage bottom where external erosion might pose a potential threat. <br />Unnecessary compaction will be avoided by keeping all but essential traffic off the stockpiled areas. <br />Topsoil signs will identify topsoil stockpiles. Contamination of the stockpiles will be eliminated by the <br />careful selection of sites that are distant from the areas where actual mining activities are occurring. <br />Drainage ways and areas near spoiling and blasting will be avoided where possible. <br />South Taylor/Lower Wilson — Rule 2, Page 73 Revision Date: 4/7/17 <br />Revision No.: RN -07 <br />