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I • 3-18 <br />3.4 Specialty and Critical Areas <br />Not applicable. <br />3.5 Final Hydrologic Restoration <br />The final reclamation contours for the disturbed area are shown in Figures 3.1-7 <br />and 3.1-2. Vegetative cover and the reclaimed contours are designed to preclude <br />erosional velocities and the ponding of water to the extent possible. Originally the <br />streams in the mine bench area included several waterfalls in their channels. Table <br />3.1-1 shows the characteristics of the channels as they will be reclaimed. Though the <br />velocities are fairly high they are in line with those naturally occurring in the area. <br />A~9ditionally, the channels are located in areas that will have solid rock in the channel <br />bottoms. In those areas where soil or backfilled material form the channel bottom, <br />adequately sized rip-rap (abundant in both the cuts and fills required by reclamation) <br />will be placed in the channels. <br />Specific channels may require additional protection from the high velocities that <br />• will be attained in the upper reaches of the channels. Soils in the area are typically stiff <br />clays that are very colloidal and can withstand channel velocities of 5 fps without <br />erosion. <br />• <br />M`Clane Volume 1 06/04 <br />