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Aspect <br />Mining Operation <br />Disturbed <br />Area <br />(acres) <br />A <br />Active mining face and highwalls ( /2H:1 V) to be cut and filled <br />at 3H:1 V slopes, graded, topsoiled, and seeded; 2,000 ft x 79 ft <br />4.0 <br />B <br />Pit bottom to be graded with overburden, topsoiled, and seeded <br />15.0 <br />C <br />Stockpile areas to be tilled and seeded <br />11.5 <br />D <br />Roads and other miscellaneous disturbances for grading and <br />seeding <br />0.5 <br />Total Disturbed Area <br />31.0 <br />reclamation is anticipated to be concurrent with mining operations, the actual length of side slope <br />requiring side slope creation and grading at any point in time is expected to be far less than 3,000 <br />feet. Although the maximum pit depth is estimated to be between 30 and 50 feet, the overall pit <br />depth decreases from north to south and, therefore, the average side slope is expected to be <br />approximately 25 feet high. Once side slope creation and grading has been completed in an <br />area, the top of the slope and the side slopes will be seeded as soon as practicable (based on first <br />available seeding season). <br />In order to gain an understanding of the extent of the mining operation, it is helpful to know the <br />acres disturbed by different aspects of the mining operation. Each aspect is listed in the <br />following table with associated disturbed area. The table illustrates a point in time where the <br />mining disturbance could be at its maximum. With such a relatively small site, it is assumed that <br />the mining disturbance will be at its greatest if the pit is mostly mined. During this conservative <br />scenario, no reclamation will have been performed on the active mining face, approximately <br />500 feet of highwall on both sides of the mining face, and about half of the pit bottom. <br />Topsoil and overburden stockpiles will primarily be kept between the north permit boundary and <br />the northern edge of the mining area. Other stockpile areas will be located along the east and <br />west edges of the mining area. The upper topsoils from the stockpile areas will not be stripped <br />and the stockpiles will be placed on top of these soils. Although this will kill the vegetation <br />living on the stockpile areas, leaving the soils in place will make final revegetation of the <br />stockpile area after the stockpiles are removed easier and more effective. During reclamation, <br />the area will be shallowly harrowed or ripped before planting, but most of the organic matter that <br />is currently there will remain and that will allow a rapid recovery of the stockpile area after <br />removal of the stockpiles and reseeding. <br />Topsoil and overburden stockpiles will be configured to have side - slopes no steeper than 3H:1 V. <br />If the stockpiles are inactive for more than one growing season they will be seeded with the fast <br />growing grass seed mixture below. <br />Fountain Pit M- 1982 -155 <br />DRMS 112 Permit Amendment Revised in Response to Adequacy Review Comments Page 8 <br />