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' HXHIBTT D <br /> ' The reclamation for the tailings impoundment area will <br /> be implemented in the revegetation of the pond area as soon <br /> as the milling operation has been completed. Since the <br /> ' tailings pond will be the last part of the tailings retention <br /> structure to consolidate, the revegetation of this area will <br /> begin at a later date than the three sloping sides of the <br /> starter dike and the tailings embankment. During this period <br /> ' of tailings consolidation, a wood fiber mulch will be applied <br /> to the dried areas on the top of the tailings retention <br /> structure to prevent water erosion and to control dust. The <br /> ' revegetation of the tailings pond will be started as soon as <br /> the tailings can support the weight of a conventional <br /> tractor. This will probably be within the first two years of <br /> ' the cessation of tailings deposition. Once the former <br /> tailings pond area has physically stabilized, the surface <br /> will be leveled by grading it with a small tractor. Then the <br /> graded surface will be ripped and a liming agent spread over <br /> ' the area at the rate of 15 tons per acre to neutralize the <br /> mill tailings. This liming agent will be mixed to a depth of <br /> approximately 20 inches by additional ripping, which will <br /> ' reduce compaction and improve water retention. A 3 or 4 inch <br /> layer of organic fertilizer will be applied to this ripped <br /> surface to supply nutrients and increase moisture retention <br /> capability. This application of fertilizer will also add <br /> ' organic matter to the mill tailings and help to prevent <br /> solarization. Because the organic fertilizer will be darker <br /> in color than the tailings, it will provide protection from <br /> ' the high levels of heat and light reflected off the light- <br /> colored mill tailings that will inhibit plant photosynthesis. <br /> Additional lime, nitrogen, phosphorus, and potassium will be <br /> ' incorporated into the organic fertilizer by raking and <br /> harrowing to a depth of about 6 inches, which will produce an <br /> even seedbed. The liming agent will be applied at a rate of <br /> approximately 5 additional tons per acre, while the chemical <br /> ' fertilizer will probably be applied at a rate of between 400 <br /> and 550 pounds per acre. This preparatory ground work will <br /> create a properly conditioned environment for rapid seed <br /> ' germination. The same seed mixture of both native grasses <br /> and introduced species that will be planted on the three <br /> sloping sides of the tailings embankment will be used on the <br /> ' former tailings pond. The seed mixture will be planted at <br /> the rate of about 40 pounds per acre by hydroseeding. A <br /> Brillion grass seeder may also be used on this part of the <br /> tailings impoundment area. A wood fiber mulch will be used <br /> ' to protect the seedbed from wind and water erosion, and to <br /> promote better root growth. <br /> ' A list of the native and introduced grass species, and the <br /> quantities of these grasses that will be planted on the <br /> reclaimed tailings impoundment area is given below. Some of <br /> the grass species on this list may be deleted or substituted <br />