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calculations for the storm water/sediment settling ponds is presented in Exhibit G - Water <br /> Information. <br /> Several hazardous materials will be stored and used on-site throughout the project. These <br /> materials are only products that are associated with diesel motors, and products associated with <br /> asphalt and concrete production. <br /> 4. Topsoil and Overburden Handling <br /> The permitted site encompasses 950.0 acres; however, —240 acres are disturbed acres,the result <br /> of historic placer mining. This renewed placer operation may re-disturb some of the historic <br /> placer workings to utilize them as settling ponds for tailings. The—240 pre-disturbed acres have <br /> no reclamation and no overburden or topsoil was recovered during mining. Approximately 170 <br /> acres of new disturbance will occur if all planned mine cuts are disturbed. It should be noted that <br /> the permit area is represented by the permit boundary shown in magenta on Map C-2. <br /> As mining and reclamation will occur concurrently, a total of 30 acres will be disturbed by <br /> mining at any given time. One area will be actively mined, a second area in advance of the active <br /> mining area will be stripped of topsoil and overburden in preparation for mining, and a third area <br /> behind the active mining areas will in reclamation where recently stripped topsoil and <br /> overburden will be applied as reclamation. Reclamation will be considered complete once <br /> vegetation is established. Therefore, the total area of active mining and reclamation at any one <br /> time will not exceed 30 acres with no more than 3 areas composed each of 10 acres. Exact <br /> acreage of mining exclusive disturbance is dependent on the rate of mining and concurrent <br /> reclamation. <br /> The processing area will initially start on the northern edge of the property as shown on Map C- <br /> 2. Approximately 10 acres of area will be stripped of topsoil and overburden. The existing pond <br /> structures will be used to capture tailings from the initial placer mining. Once these areas are <br /> filled, overburden and topsoil will be replaced. <br /> Anticipated topsoil to be removed from undisturbed future mining areas amounts to 45,711 CY. <br /> Topsoil will not be stockpiled on site as it will be directly placed in the previous mining area in <br /> reclamation. The first stripping of topsoil will be placed on a previously leveled historic mining <br /> Box Creek Placer Mine Greg 1. wki and As caatcs PLIA <br /> September 2018 D-10 <br />