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Design Criteria <br />Topic <br />Design Criteria for the Proposed Action <br />established. The approaches to any crossing shall be armored by <br />placing a minimum flinch depth of 1- to 3-inch clean crushed <br />rock, 14 feet wide for a distance of 20 feet on each side of the <br />drainage to minimize siltation, bank rutting, and erosion. <br />Crossings will be constructed perpendicular to the flow line. <br />When access is no longer needed, any temporary culverts, <br />associated fill, and crushed rock shall be removed. Silt fences or <br />appropriate sediment control devices shall be utilized to prevent <br />siltation into existing drainages, ponds, or associated riparian <br />areas. <br />19. The road surface will be constructed with an in -slope of 2 percent <br />and the surface width shall not exceed 14 feet except in locations <br />that require curve widening, or those designated for turnouts. <br />These locations must be identified on the ground and approved by <br />the responsible USFS official. Side - casting will not be permitted <br />where side slopes exceed 40 percent. <br />20. Special design, construction, and mitigation measures jointly <br />developed by a USFS Interdisciplinary Team and NEC will be <br />applied to project construction activities proposed in steep slope, <br />moderate slope, or geologic hazard areas to minimize and control <br />the potential for slope de- stabilization and erosion. These <br />measures may include but will not be limited to site - specific <br />drainage measures, limitations on slope cut/fill angles, slope <br />construction measures (benching or slope reinforcement such as <br />temporary gabions or barricades), and slope stabilization measures <br />(such as geotextile or jute matting or hydromulching). <br />2733.04b and <br />FSM 7730) , <br />WCPH (FSH <br />2509.25), <br />Road Use <br />Permit (FSM <br />2733.04b and <br />FSM 7730) <br />Forest Plan <br />Road Operations <br />21. Minnesota Creek, Dry Fork, and Horse Gulch roads will continue <br />to be open for public full size vehicle and ATV use throughout the <br />project. MCC will sign roads warning the public of heavy truck <br />traffic during the active drilling season. <br />22. To minimize conflicts with hunters, project traffic will not be <br />allowed on the Minnesota Creek, Horse Gulch, and Dry Fork <br />roads (except for emergency use) during the periods of one hour <br />before sunrise and two hours after sunset during the big game rifle <br />hunting seasons. Additional security and public safety measures <br />may be considered and approved or directed by the District <br />Ranger. <br />BMP <br />BMP <br />