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Historically, the uranium ore body was typically accessed through adits or tunnels driven from the side of the canyon walls. Most of the previous mining operations included construction of haul roads and dumping of waste rock along the sides of the canyon. The Lost Dutchman Mine, which is an unreclaimed pre-law mine (i.e., mine that shut down prior to the enactment of state and federal reclamation laws) is a good example of what these older mines looked like during operation. The mine was accessed by a narrow mad along the edge of the canyon and waste rock was dumped directly into an ephemeral drainage that flows into Lumsden Canyon. Umetco was able to successfully reclaim the post-law canyon wall adits in the azea along with associated roads and waste dumps in the eazly 2000s; however, the steep terrain and surface drainage issues made this reclamation work challenging. EFRC evaluated the potential environmental impacts of various mining alternatives in developing a long-range mine plan for the claim block. This evaluation indicated that potential impacts to soil, vegetation, water, and other natural resources could be minimized by concentrating surface disturbing activities in the vicinity of the Urantah Decline, where the topography is flatter and surface drainage can be controlled relatively easily. This azea became the focal point for the design of the Whirlwind • Mine surface facilities including primary access roads, buildings, ore stockpiles, waste rock disposal, and surface drainage controls. Secondary access to the Packrat Mine portals was also incorporated into the mine design to provide adequate mine ventilation and an emergency escape way. Surface disturbance at the Packrat Mine, which is located on the side of Lumsden Canyon, is limited to a narrow access mad and small pad azea. The Packrat azea will not be used for disposal of waste rock or primary ore haulage. The mine plan calls for the disturbance of about 22.6 acres, much of which was previously disturbed and reclaimed by the former mine operators. The lazgest single surface disturbance is the mine waste mck pile which encompasses approximately 10 acres and is designed for the life of the mine. This pile will extend eastwazd from the Whirlwind portal (formerly the Urantah Decline portal) within the gently sloping azea between County Road 5/10 to the north and the natural hillside to the south. The north facing side of the waste dump will be graded, topsoiled, and revegetated concurrently as the pile expands to minimize visual impacts and sediment loading of surface water runoff. .~ Whirlwind Mine June 07 i-2