GENERAL47194 - Laserfiche WebLink

Home Browse Search

- 4 - ~~ ~ annual excavation rate of 1 million tons would extend the operation through the year 2005. The reclamation will progress accordingly with the establishment of the benches per the mining plan and timetable. A written explanation thereof is as follows: 1975-80 - Benches 6705 and 6625 between stations 0+00 to 5+00, 6945, 6865 and 6785 between stations 3+00 to 15+00 on the: north side, 7025 and remaining portions of 6945 and 6865 between stations 15+00 to 20+00 and 6865 and 6785 on the south side. 1980-85 - Remaining portion of bench 6785 on the north side between stations 13+00 to 18+00, 6705 between stations 5+00 to 14+00 on the north side and 6705 on the south side of the quarry. 1985-90 - Remaining portion of bench 6705 between stations 11+00 to 17+00, and 6625 on the north and south sides of the quarry. 1990-95 - Bench 6545 1995-2000 - Bench 6465 2000-2005 - Benches 6385, 6305 and 6225. The 40' level horizontal portion of the benches will be covered with quarry fines and in some cases stripping. These soils will be supplemented with an organic fertilizer to support the revegetation program. For more pertinent details on reclamation refer to the Thorne Ecological Report of 1975 and the vegetation section of. the site plen. Reclaimed areas and their vegetation will be maintained at least 3 years to assure their success. Maintenance will include halting soil erosion, if any, and reseeding or planting to assure a vegetative cover. Plans for drainage of the area during and after operation are provided in the drainage report by Leonard Rice Consulting Water Engineers of April 1475 and presented herewith as a part of this application. A summarization would be as follows: Drainage of Strain Gulch from outside the operational area is passed through the operations via a large underground concrete conduit. Nearly all the drainages from within are direcCed to a detention basin for settling before being allowed to pass through the underground conduit. The conduit and detention basins are of such size to accommodate the 100 year flood. Testing the waters of Strain Gulch during the previous years of operation revealed no pollution and that its quality remains good. Refer to the Thorne Ecological Institute's Reports of 1972 end 1975.