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BACKFILLING AND GRADING <br />Backfilling and grading will be undertaken to achieve the post -mining <br />topographic configuration shown on Maps King II -010 A, B 8v C. <br />Historic pre -mining stream channels had been backfilled and otherwise <br />disturbed in various areas, apparently for agricultural purposes. Post - <br />reclamation stream channels will mimic, to the extent practicable, <br />channels up -gradient (northeast) of the disturbed surface facilities. <br />These channels are typically low gradient and grass lined, with <br />occasional natural rock segments. Temporary erosion protection, such <br />as erosion mats, will be utilized during reclamation until grass channels <br />can be established. <br />RETOPSOILING <br />Topsoil will be replaced to a finished depth of six (6) inches (as described <br />in Section 2.05.3) over all disturbed areas to be reclaimed. Topsoil <br />replacement operations will be completed after backfill and grading <br />operations. To ensure good contact between replaced topsoil and re- <br />graded material, the surface of re -graded areas will be left in a roughened <br />condition. Topsoil will be replaced using methods to minimize <br />compaction after placement. In areas where compaction occurs, ripping <br />or tilling of the replaced topsoil will take place. <br />REVEGETATION <br />Re -vegetation Measures <br />Re -vegetation measures have been developed to meet the goals of <br />providing native, self-sustaining vegetation communities of similar <br />nature and composition as those present in the pre -mining landscape <br />and to provide equivalent or better carrying capacity and utility post - <br />mining. <br />Timing <br />With the significance and dominance of cool season graminoid species in <br />the rabbitbrush/big sage mixed shrub -land community, emphasis <br />should be placed on ensuring germination and survival of these species <br />in the re -vegetation seed mixes. Precipitation during the growing season <br />(April -September) decreases from April through June, increases in July <br />and August, and then decreases slowly through the end of the growing <br />season. <br />GCC Energy, LLC <br />Page 9 <br />Section 2.05.4 <br />Page 9 <br />July 11, 2017 (RN -07) <br />King II Mine <br />