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the purpose of after hour equipment maintenance and crushing activities within the permitted <br /> hours in the winter months while the days are shorter. A permanent drop toilet will be used by <br /> employees and is located just south of the office trailer. All mining structures on site are shown <br /> on Map C-2. Portable mining equipment such as loaders, dozers, trucks and excavators will be <br /> serviced on an as-needed basis onsite. 'Upon reclamation, all portable equipment will be <br /> removed from the site. <br /> The entire site is surrounded by a perimeter fence of 3-strand barbed wire and the permit <br /> boundary is marked with stakes surveyed on site.No problems are expected with vandalism. It is <br /> extremely unlikely that any toxic or acid-producing materials will be encountered during the <br /> mining operation since past mining shows that the material is alluvial in nature. However, in the <br /> event that such materials are encountered,they will be covered with overburden and topsoil from <br /> the stockpiles to the same depths outlined in the reclamation plan and no more mining will occur <br /> in this area. <br /> The site will use all existing roads to haul the product to its final destination. It is planned that <br /> the material may be used to re-surface existing roads, make concrete aggregate or provide new <br /> road base for any new roads within an economic distance to the site. <br /> Several hazardous materials will be stored and used onsite throughout the project. These <br /> materials include products associated with diesel motors and gravel processing equipment. <br /> 4. Topsoil and Overburden Handling <br /> Topsoil is highly variable and ranges from depths of 12 to 49 inches. Overburden depths are also <br /> highly variable and range from 1 to 10 feet with an average depth of 5 feet expected. Both <br /> topsoil and overburden will be used on site for reclamation of mined out areas. Topsoil will be <br /> stored along the western and southern edges of the property and will not exceed 20 feet in height <br /> or 40 feet in width (2H:1 V). Overburden will be stored along the western edge of the property in <br /> berms that will not exceed 30 feet high and 60 feet wide (2H:IV). Any topsoil or overburden <br /> stockpile that is to be in place longer than 180 days will be vegetated to prevent wind erosion. <br /> Yevoli Cobblestone Pit <br /> August 2018 D-5 <br />