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be covered with subsoil and topsoil from the stockpiles to the same depths outlined in the <br /> reclamation plan and no more mining will occur in this area. <br /> The operator commits to clearly marking the permit boundary with stakes surveyed on site. <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 which are associated with diesel motors, and products associated with <br /> asphalt and concrete production. All such materials will be stored in a safe manner consistent <br /> with the site's Spill Prevention, Control, and Countermeasure Plan. <br /> 4. Topsoil and Overburden Handling <br /> Topsoil ranges from 4 to 22 inches thick on site, 13 inches is the anticipated average. Overburden <br /> is anticipated to be 4-6 feet thick based on landowner experience. Both topsoil and overburden are <br /> used on site for reclamation of mined out areas. In the event that Graff needs to store topsoil or <br /> overburden in a berm, it will store this material within the active pit area. Any topsoil or <br /> overburden stockpile that is to be in place longer than 90 days will be vegetated to prevent wind <br /> erosion.Anticipated topsoil and overburden quantities are shown in Table D-2.These are estimates <br /> based on soil survey data and the landowner's experience with their property. <br /> Table D-2 Estimated Topsoil and Overburden Quantities <br /> Pit Topsoil Overburden <br /> West 113000 CY 569000 CY <br /> East 140500 CY 705000 CY <br /> Total 253,500 CY 1,274,000 CY <br /> BRS&G Pit I �.� L•HnAi anA 1s.ouatr.,Pi c _ <br /> March 2019 D-6 <br />