GENERAL31745 - Laserfiche WebLink

Home Browse Search

-g- Proposed surface operations include four phases. First, existing roads to the portal will be upgraded and proper drainage provided to conform with Fremont County road standards and Rule 4.03. Second, the downslope spoil from the contour strip operation will be utilized in the construction of the sediment pond and the truck turn-around in Lewis Gulch. Underlying the 8800 cu. yd. fill will be a 260 foot long culvert designed to pass the 100-year, 24-hour sto rni event flow of Lewis Gulch. Third, portal development in the abandoned highwall will also utilize overburden spoil from the strip mining operation. Steel arch support structures will be placed into the existing highwall and the overburden used as a compacted fill over the archways. Fourth, the northern portion of the previously disturbed area will be partially backfilled by the construction of the ramp and toe dike for the underground development waste pile. Consequently, the majority of backfilling required for final reclamation of the site will be performed prior to the mining of coal at the Twin Pines No. 2 tdine. When the Twin Pines No. 2 mining operation is terminated, all the surface disturbed lands except the County road will be reclaimed. All facilities will be removed from the site, the portals sealed, the Lewis Gulch fill removed, and the area graded to more closely approximate the original contours than the existing situation. The plant growth medium will be analyzed and soil amendments will be added as required. The disturbed area will be revegetated with native grasses and shrubs. Straw mulch will be used to minimize erosion and aid in the establishment of vegetation. Reclamaticn operations at the Twin Pines No. 1 site will continue with the removal of all equipment and facilities, backfilling of the portal access road, coal fine removal, ripping of the coal yard surface and revegetation.