Laserfiche WebLink
South Fan <br />Final contours for the South Fan area will be approximately the original <br />contours shown on Exhibit SL-16-009, Tab 13. The borrow area shown <br />on Exhibit SL-16-009 will be used as necessary to backfill the shaft. The <br />borrow area will be graded to blend in with exiting contours. After salvage <br />operations, the remaining concrete shaft collar and structural foundations <br />will be broken up and pushed into the shaft. The shaft will be backfilled to <br />within approximately 5' feet of the surface and the shaft sealed with a <br />concrete plug approximately 5' thick. The fan bench will be backfilled with <br />material filled on the outside edge of the bench and with material from the <br />two overburden stockpiles nearby. The most suitable plant growth <br />material will be placed on the fill last and amended as necessary to <br />promote revegetation. The portion of Access Road 3 leading into the fan <br />site will be eliminated by grading it to match the adjacent topography. Silt <br />fences will be utilized as alternative sediment control and placed as <br />shown on Exhibit SL-16-009 <br />2 West Portals <br />• The final contours for the, 2 West Portal area are shown on Exhibit 58, <br />Tab 13. The rock and soil salvaged at the two 2 West Portals will be used <br />to backfill these areas. The steep cut slope on a section of the road <br />between the two portals will be flattened. This will be accomplished by <br />cutting the slope back about 10-feet into undisturbed ground. Due to the <br />volume of coal removed during construction, the final contours will be an <br />average of 2' lower than the original contours. The material will be graded <br />to eliminate highwalls and to create a smooth transition with the adjacent, <br />unaffected areas. The drainage channel relocation near the North portal <br />will be permanent. Boulders will be placed between the permanent <br />channel and the portal fill. The five culverts shown on Map 58 will be <br />removed from the 2 west portal light use road. Low water crossing are to <br />be installed <br />During backfilling of the 2 West portals, including the substation, the most <br />suitable plant growth material will be placed on the fill last and amended <br />as necessary to promote revegetation. Silt fences will be utilized as <br />alternative sediment control and placed as shown on Exhibit 58. <br />• 14-12 (Rev. 9/00) <br />