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fish, wildlife, or related environmental values and will not cause additional contributions of <br />• suspended solids to stream flow or to runoff outside the permit area. <br />Location. At the New Horizon 2 area, haul roads will be constructed on lands proposed to be <br />disturbed by mining and reclamation operations. <br />Haul roads at the mine site will be designed with appropriate ditches, grades and culverts to control <br />erosion and runoff. All haul roads will be constructed basically "on-grade". Topsoil will be removed <br />and stockpiled in accordance with WFC's topsoil salvage plan. The location will be partially limited <br />by the grades of the existing or postmining areas. Stream fords will not be used during <br />construction of roads unless approval is first obtained from the regulatory authority. The existing <br />and proposed haul road profiles and typical cross section are shown on Maps 2.05.3(3)-3. <br />Design and Construction. The design of the haul roads incorporate the demand for mobility and <br />travel efficiency, based on the geometric criteria appropriate for the anticipated volume of traffic, <br />weight and speed of the vehicles to be utilized. The design and construction or reconstruction of <br />haul roads not within the estimated disturbed area will be certified by a registered professional <br />engineer, if required by the CDMG for good cause shown. <br />. Should haul roads not within the estimated mining disturbance areas be necessary, they will be <br />designed and constructed or reconstructed in compliance with the following standards in order to <br />control erosion and disturbance of the hydrologic balance. <br />The vertical alignment of the haul roads will not exceed 10 percent on the overall grade. Maximum <br />pitch grade will not exceed 15 percent, and there will not be more than 300 feet of pitch grade <br />exceeding 10 percent within any consecutive 1,000 feet. <br />The horizontal alignment will be consistent with the existing and postmining topography and will be <br />coordinated with the vertical alignment to ensure that the roads will not cause excessive <br />environmental damage. <br />Road cut slopes will not be steeper than 1v:1.5h in unconsolidated material or 1v:0.25h in rock. <br />Embankment fill slopes will not be steeper than 1v:1.5h, except where embankment material is a <br />minimum 85 percent rock. Embankment slopes will not be steeper than 1v:1.35h unless it has <br />• (Revised 7/2004) 2.05.3(3) - 22 <br />