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e~t,P„w~i stream when the upstream watershed is larger than • <br />one square mile and intermittent or perennial stream will be <br />approved by the Division before construction proceeds. All <br />other stream crossings will consist of culverts in flowitrg <br />streams, consistently wet areas, and in ephemeral charvzels as <br />r>e~ssary to allow passage aryl to minimize disturbance Of the <br />hydrologic balance. Access roads will utilize culverts <br />designed to safely pass the 10-year, 24-hour precipitation <br />event (see Table 12-6, Culvert Specifications). Ditches aryl <br />drainage control will be established during construction aryl <br />maintenance of the roads to minimize erosion arri to assist <br />traffic passage. <br />2.05.3(3)(c)Desion and Construction. 7i1e design of the access roads <br />4.03.2(3) incorporate the demarri for mobility aril travel efficiency, <br />based on the geometric criteria a=npmpYiate for the <br />anticipated volume of traffic, weight and speed of the <br />vehicles to be utilized. • <br />Access roads will be designed aryl constructed or reconstructed <br />in cm~liance with the following ~a~a~~ in ort3pY t0 control <br />erosion and distxsbanee of the hydrologic balance. Topsoil <br />will be removed aryl stockpiled in accordance with the topsoil <br />salvage plan. <br />The vertical alignment of the access raids will not exceed l0 <br />percent on the overall grade. rtaY;,,n,m pitch grade will not <br />exceed 15 percent, and there will not be more than 300 feet of <br />pitch grade exceeding 10 percent within any consecutive 1,000 <br />feet. <br />The horizontal alignment will be consistent with the existing <br />aryl ms~n;ning topography and will be coordinated with the <br />vertical alignment to Pnai,re that the roads will not cause <br />excessive environmental damage. • <br />12-37b Revised 12/10/92 <br />