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Added 5-21-82 <br />Haul Roads. There is one haul road on the Bourg property (Plate 23). <br />• It was constructed and is maintained to meet regulatory requirements. It <br />was built in a manner which will control or minimize erosion, air and <br />water pollution, and damage to surrounding property. The haul road is <br />located on stable slopes, out of intermittent or perennial drainages, in <br />order to minimize erosion and sedimentation. It does not ford any streams. <br />Overall length of the haul road is 760 feet and maximum width is 35 feet <br />at the entrance to the property. It was designed to handle a speed limit <br />of 20 m.p.h. Grades do not exceed 1v:lOh (10%}, and the horizontal align- <br />ment closely approximates the existing topography. <br />Topsoil from the designed roadway was removed and stockpiled prior to <br />construction, The roadbed was then compacted with a Caterpillar 815 <br />Compactor and then graded. Fourteen inches of pit-run gravel was placed <br />on the road, followed by four inches of 3/4 inch gravel. No acid- or toxic- <br />forming material, coal or organic matter was used to build or surface the <br />haul road. The surfacing materials used to construct the road are sufficiently <br />durable to withstand the anticipated volume of traffic. <br />The haul road does not cross or block any drainages on the Bourg property <br />• and thus, does not contain any culverts or bridges. Runoff from the road <br />will flow into ditch C-1 and will be released into sediment pond C. This <br />system is adequate to safely pass peak runoff from a 10 year 24 hour <br />precipitation event. The surface of the road was constructed to prevent <br />ponding of water. <br />The haul road will be graded periodically to ensure that design <br />standards are met and to ensure safe and efficient utilization of the <br />~ road. Dust control will be accomplished by watering the-roads when necessary. <br />When the haul road is no longer required, it shall be closed to all <br />vehicular traffic. It will then be regraded to conform with the natural <br />surroundings and topsoiled and reseeded in the same manner as other <br />disturbed areas on the Bourg site. <br />Light-use Roads. Two types of light-use roads exist on the Bourg property , , <br />~ (see Plate 23 for locations of all roads). The first type, a perimeter road ~~ <br />was constructed at the request of the Bureau of Land Dlanagement to create a <br />buffer zone between the mining operations and surrounding BLM lands. This <br />. road is used occasionally for water monitoring and to check fences around <br />the perimeter of the property. <br />D-9(a) <br />- --- _ - -- ~-.~a - <br />~= <br />