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2. Exploration operations will be terminated during times when ruts on access roads <br />exceed 4" in depth, as determined by the authorizing officer. <br />3. For all newly disturbed areas, including, pads, pits and access roads, site specific <br />locations shall be selected to minimize soil cut and fill volumes. Additionally, these sites <br />will be located to avoid encroachment or interception of drainage channels (any defined <br />channel having a bottom width of 2 feet wide or greater), where possible. <br />4. On all road crossings of defined drainage channels, any needed cut and fills or other <br />channel modification will be at the minimum necessary to provide safe access across the <br />channel. All channel modifications will be fully reclaimed and stabilized during final <br />reclamation. <br />5. All equipment and vehicles will be confined to the approved access roads. <br />6. Any cleared trees will be stockpiled for use during reclamation. <br />7. Cross drains (dips, waterbars, etc) will be constructed on all access roads. Cross drain <br />design and spacing will be in accordance with the following guidelines. <br />Road Surface <br />Slope % Cross Drain <br />S acin ft: <br />2 200 <br />2-4 100 <br />4-5 75 <br />>5 50 <br />a. Cross drains should be located above breaks in vertical profile from shallow to <br />steep grades to prevent the shallow grade surface drainage from gaining velocity, <br />and erosive power on the steep grade. <br />b. Whenever possible cross drains should be located to release water on convex <br />slopes or other stable areas that will disperse water rather than channeling it. <br />c. Cross drains should be constructed with an outslope grade of 3 to 5 percent or <br />equal to the existing out-slope grade. <br />o To protect faded midget rattlesnake, do not harm or kill snakes unless human health or safety is at <br />risk. <br />o To reduce impacts to sensitive plants: A survey for sensitive plants is advised where drilling would <br />require the use of heavy equipment off the established roadway. To reduce impacts to sensitive <br />reptiles: Direct mortality to snakes in the project area should be avoided except when human safety is <br />a consideration. To reduce impacts to migratory birds: Direct mortality of migratory birds in <br />the project area should be avoided. No nests, eggs or individual birds will be harmed during <br />activities.