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<br />s <br />1 <br />• ~evised 5-21-82 <br />Earthmoving is planned with scrapers and bulldozers. Final regrading <br />will employ bulldozers and perhaps a grader. All leveling will be done <br />on the contour to minimize erosion. <br />Overburden strata will be thoroughly mixed during placement in stock- <br />piles. No unique problems are expected regarding the replacement and leveling <br />of the spoil material during reclamation. <br />The gentle slopes of the reclaimed surface will be easily worked and <br />seeded using standard reclamation equipment. No behavioral or use patterns <br />of indigenous animals found in the area would be expected to change on this <br />reclaimed surface. Their environment and food supply may be enhanced. <br />Topsoiling. Table 4 shows the plan and schedule for stockpiling 232,910 <br />bank yards of topsoil and redistributing 53,881 yards of this topsoil in <br />stages 1 and 4. Topsoil will be removed with scrapers prior to mining, <br />taking as much as 5 feet from areas of non-saline-sodic,.thi.ck alluvial <br />soil and less from the tops of knolls and ridges where the soil is poor <br />and thin. Topsoil will be placed to a depth of approximately one foot in <br />all areas. <br />The areas of saline-sodic soils are shown on Plate 15. They are out <br />of the mining area. When topsoil is removed from these areas, it is stock- <br />piled separately and will be buried at least 25 feet deep in the pit <br />rather than reapplied for vegetative growth. <br />Prior to topsoiling, the graded spoil will be ripped with a large bull- <br />dozer to a depth of 36 inches. Topsoiling will be done during August and <br />September. Seedbed preparation will consist of double discing and possibly <br />harrowing prior to drilling. <br />Mulch. Flatiron will apply a straw mulch to all reseeded areas in order <br />to control erosion and to increase moisture retention in the soil. Straw <br />will be applied immediately after seeding at a rate of 2 tons/acre and will <br />be crimped into the soil to ensure effective protection against wind and <br />water erosion. <br />Fertilization. Soil tests will be taken to determine what fertilizer <br />applications are needed. <br />Revegetation. All seeded species will be planted using a rangeland <br />drill pulled by a standard tractor along the contour. Grasses, fortis and <br />shrubs will total 12.25 pounds of P.L.S./acre if all species are available <br />at time of seeding. Dr. Warren Keammerer, vegetation <br />F-2 <br />