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Mining will develop a gravel pit to a depth of up to 30 feet. Groundwater is not <br /> expected to be encountered during excavation and mining. No acid or toxic producing <br /> materials will be exposed during mining. No explosives will be used in conjunction with mining <br /> or reclamation. <br /> The proposed mining operation will consist of an access road from the east side of the <br /> site. The access road will be 40' wide. All interior haul roads will be temporary and will be <br /> reclaimed after the mining has been completed. It is estimated that the life of the pit is 10-15 <br /> years and is dependent upon demand. <br /> This is a privately owned site and does not require the State Historic Preservation Office <br /> requirements for a cultural or historic study. If the operator encounters any structure of note, <br /> the State Historic Preservation Office will be notified. <br /> 6.4.5 Exhibit E <br /> Reclamation Plan <br /> Reclamation to rangeland will occur following mining at the site. Slopes will be returned <br /> to a 3H:1V slope or flatter when mining has concluded, thus allowing for reclamation to <br /> immediately follow mining as the site progresses. As topsoil, waste rock and overburden are <br /> removed from the working face, they will be stockpiled for future reclamation use. Throughout <br /> mining, slopes will be maintained at a 3H:1V minimum, except for the active mine face of no <br /> more than 1,000 feet. Six inches of topsoil will be replaced on affected surfaces. If necessary, <br /> surfaces will be roughened prior to seeding. All materials used for backfilling will be generated <br /> from onsite sources. Onsite topsoil will be adequate for reclamation purposes. No importation <br /> of materials for reclamation purposes will be necessary. All disturbed areas, including the <br /> processing area, will have all stockpiles and mobile equipment removed. The area will be <br /> backfilled to a 3H:1V or shallower and the surface will be scarified. Following that, six inches of <br /> topsoil will be replaced on affected surfaces and then the site will be reseeded with the seed <br /> mix listed below. <br /> Asphalt Constructors, Inc. will seed using broadcasting with no mulch or fertilizer. <br /> The vegetation and seeding rates for soil type KbA is as follows: <br /> SPECIES RATE(lbs PLS/AC) <br /> Western Wheatgrass 3.00 <br /> Wyoming Big Sagebrush 0.50 <br /> Needle and Thread 2.25 <br /> Indian Ricegrass 1.00 <br /> Blue Grama 1.00 <br /> Bottlebrush Squirreltail 3.00 <br /> Smith Pit Amendment Application <br /> pg. 7 <br />