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• erosion. No part of any access road will be located in the channel of an ephemeral <br />stream where the upstream watershed is at least one square mile, intermittent or perennial <br />stream unless specifically approved by the Division. <br />Fords of ephemeral streams draining a watershed of at least one square mile above the <br />diversion or intermittent streams are prohibited unless they ere approved by the Division. <br />Fords of perennial streams will not be approved. The fords will not seriously alter the <br />normal flow of water, contribute to stream sediment toed or adversely effect fish, <br />wildlife, and related environmental values. All other stream crossings will be made <br />using bridges, culverts, or other structures, designed, constructed, and maintained to <br />meet the requirements of 4.03.2(4). <br />Access roads will be located to minimize downstream sedimentation and flooding. Nothing <br />in 4.03.2(2) will prohibit en operator from diverting a stream channel in accordance with <br />4.05.4. <br />Design and Construction <br />Access roads not within the disturbed area in accordance with 4.05.2(4) will be designed <br />and constructed or reconstructed in compliance with [he following standards in order to <br />control erosion and disturbance of the hydrologic balance. <br />Vertical Alignment. A continuous grade with excessive cuts or embankments will be <br />avoided. Changes of grade will be made to conform as closely as possible to the existing <br />terrain, end maximum road grades will be es follows: The overall grade will not be <br />steeper than 10h:1v (10 percent), the pitch grade will not be steeper than 6.Sh:1v (15 <br />percent), for any consecutive 1,000 feet, the pitch grade exceeding 15 percent will not <br />be longer than 300 feet within any consecutive 1,000 feet. <br />Horizontal Alignment. Access roads will have horizontal alignment es consistent with the <br />existing natural topography as possible, and will provide the alignment required to meet <br />the performance standards of 4.03.2. Horizontal and vertical alignment will be <br />coordinated to ensure that the road will not cause environmental damage. <br />Road Cuts. Cut slopes will no[ 6e steeper than 1.Sh:ty in unconsolidated materials or <br />0.25h:[v in rock, except that steeper slopes may be specifically authorized by the <br />Division if geotechnical analysis demonstrates that a minimum safety factor of 1.5 can be <br />9 <br />