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General Requirements. Peabody will construct, maintain and reclaim light-use roads to <br />minimize ero ston and siltation, air and water pollution and damage to public and private <br />property. To the extent possible, using the best technology currently available, <br />light-use roads will not cause damage to fish, wildlife, or related environmental values <br />and will not cause additional contributions of suspended solids to streamflow or to runoff <br />outside the permit area. Any such contribution shall not be in excess of limitations of <br />State or Federal law. The locations of existing light-use proposed roads are shown on <br />Exhibits 12-2 and 12-3 and a typical cross section is shown on Exhibit 13-20. <br />Location. Peabody will locate light-use roads on ridges or on a stable slope in order to <br />minimize erosion. No part of any light-use road will be located in the channel of an <br />ephemeral stream where the upstream watershed is larger than one square mile and in <br />intermittent or perennial streams unless specifically approved by the Division. Stream <br />fords of an ephemeral stream when the upstream watershed is larger than one square mile <br />and intermittent or perennial stream will be approved by the Division before construction <br />proceeds. All other stream crossings will consist of culverts in flowing streams, <br />consistently wet areas, and in ephemeral channels as necessary to allow passage and to <br />minimize disturbance of the hydrologic balance. Light-use roads planned to be used for a <br />period of less than six months will utilize temporary culverts, where required, designed <br />to safely pass the 1-year, 6-hour precipitation event. Light-use roads planned to be used <br />for a period of more than six months will utilize culverts designed to safely pass the <br />10-year, 24-hour precipitation event (see Table 13-3, Culvert Specifications). Ditches <br />and drainage control will be established during construction and maintenance of the roads <br />to minimize erosion and to assist traffic passage. <br />Design and Construction. Light-use roads will be field engineered to follow the existing <br />topography as much as practicable. Topsoil will be removed and stockpiled in accordance <br />with Peabody's topsoil salvage plan. The horizontal and vertical alignment will be <br />dictated by the topography and the need to avoid obstructions. Light-use road surfacing <br />material will be adequate for the use of the road. Acid or toxic-forming substances will <br />not be used in the road surfacing. Light-use roads will be maintained to minimize erosion <br />and to allow passage of traffic. <br />Reclamation. Peabody will reclaim a light-use road when it is no longer needed in <br />accordance with the reclamation plan. The road will be closed to vehicular traffic. The <br />. natural drainage patterns will be restored. All culverts will be removed. Roadbeds will <br />13-30 Revised 04/11/88 <br />