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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 & C. <br />RETOPSOILING <br />Topsoil will be replaced to a finished depth of 12 inches over all <br />disturbed areas. Topsoil replacement operations will be completed after <br />backfill and grading operations. To ensure good contact between <br />replaced topsoil and re- graded material, the surface of re- graded areas <br />will be left in a roughened condition. Topsoil will be replaced using <br />methods to minimize compaction after placement. In areas where <br />compaction occurs, ripping or tilling of the replaced topsoil will take <br />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. Given this precipitation distribution, two seeding windows are <br />proposed. A spring seeding window would take advantage of increased <br />mid -late summer precipitation, encouraging summer growth and <br />allowing plants to add sufficient biomass prior to winter. A second <br />autumn seeding window allows seeding into relatively moist ground, but <br />prevents significant seedling growth prior to freezing, allowing seeds to <br />remain dormant over the winter with adequate moisture for early <br />germination in the spring. <br />Two optimal windows for re- vegetation seeding are proposed dependent <br />on the observations described above; a spring window from March 15 to <br />June 15 and a fall window from August 15 to November 15. <br />GCC Energy, LLC <br />Section 2.05.4 <br />Page 9 <br />King II Mine <br />November, 2009 - re /S <br />