Laserfiche WebLink
rate and volume of runoff; Using straw dikes, riprap, check dams, mulches, vegetation sediment <br />filters, and other measures that reduce overland flow velocity, reduce runoff volume, or trap <br />sediment. Drainage ditches will be constructed at the toe of all cut slopes formed by the <br />construction of access roads. The road surface will be sloped as sufficient to prevent ponding of <br />water and erosion of the road surface. Culverts will be designed to safely pass the 10 -year, 24- <br />hour precipitation event without a head of water at the entrance unless suitable protection against <br />erosion or fill saturation is in place at the entrance and exit of the culvert. Culverts will be <br />designed, constructed, and maintained to sustain the vertical soil pressure, the passive resistance <br />of the foundation, and the weight of vehicles to be used. Drainage pipes and culverts will be <br />constructed to avoid plugging or collapse and erosion at inlets and outlets. All culverts will be <br />covered by compacted fill to a depth of 1 foot. <br />Surfacing: Access roads will be surfaced with rock, crushed gravel, or other material approved <br />by the Division as sufficiently durable for the anticipated volume of traffic and weight and speed <br />of vehicles to be used. Acid- or toxic -forming substances will not be used in road surfacing. <br />Vegetation will not be cleared for more than the width necessary for road and associated ditch <br />construction to serve traffic needs and for utilities. <br />Maintenance: Access roads will be maintained in such a manner that the required or approved <br />design standards are met throughout the life of the entire transportation facility including surface, <br />shoulders, parking and side areas, approach structures, and erosion control devices. Access road <br />maintenance will include basic custodial care as required to prevent damage to adjacent <br />resources. This includes maintenance to control erosion, repair of structures and drainage <br />systems, removal of rocks and debris, replacement of surface, and restoration of the road prism. <br />A road damaged by a catastrophic event, such as a flood or earthquake, will be repaired as soon <br />as it is practicable after the damage has occurred. <br />Reclamation: Unless the Division approves retention of access roads as suitable for the approved <br />postmining land use, immediately after the road is no longer needed for operations, reclamation, <br />or monitoring: <br />i. The road will be closed to vehicular traffic; <br />ii. All culverts will be removed; <br />iii. Roadbeds will be ripped or plowed; <br />iv. Fill slopes will be rounded or reduced and shaped to conform the site to adjacent terrain <br />and to meet natural -drainage restoration standards; <br />V. Cut slopes will be shaped to blend with the natural contour; <br />vi. The regraded area will be covered with topsoil in accordance with 4.06.4(2) and <br />revegetated in accordance with 4.15. <br />vii. Road -surfacing materials that are incompatible with the postmining land use and <br />revegetation requirements will be removed and disposed of in appropriate disposal areas. <br />Section 2.05.3(3) Page 11 March 2018 (TR -16) <br />