Laserfiche WebLink
3-18 <br />• 3.4.10 Specialty and Critical Areas <br />A few areas within the portion of the permit area to be affected will require establishment of <br />vegetation primarily for aesthetics or erosion control and are shown in Table 3.3-2. These areas <br />include: <br />Bench area <br />Topsoil stockpile <br />Hydrologic control structures <br />3.5 Final Hydrologic Restorataion <br />The final reclamation contours for the disturbed area are shown in Figures 3.1-I and 3.1-2. <br />Vegetative cover and the reclaimed contours are designed to preclude erosional velocities and the <br />ponding of water to the extent possible. Originally the streams in the mine bench area included <br />several waterfalls in their channels. Table 3.1-I shows the characteristics of the channels as they <br />will be reclaimed. Though the velocities are fairly high they are in line with those naturally <br />• occurring in the area. Additionally, the channels are located in areas that will have solid rock in <br />the channel bottoms. In those areas where soil or backtilled material form the channel bottom. <br />adequately sized rip-rap (abundant in both the cuts and fills required by reclamation) will be <br />placed in the channels. <br />Specific channels may require additional protection from the high velocities that will be <br />attained in the upper reaches of the channels. Soils in the area are typically stiff clays that are <br />very colloidal and can withstand channel velocities of 5 fps without erosion. <br /> <br />M~ Volume 1 10-12.97 <br />