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Sarirn - 2.05.3 <br />extends to the former coal st«kpile area near the silo, which has now been converted to an employee <br />• parking area. This section of road is designed and constructed to handle two-way truck traffic, in <br />addition to all other traffic entering or leavutg the site. This section of the road is 24 to 40 feet wide, <br />partially paved with the remainder gravel-surfaced, with a m„rimtun grade of nine percent. The <br />average grade of this road segment u about S percent. <br />The second segment of the mine entrance road extends from the parking area to the truck dump and <br />also intersects the East Yard and Sanborn Geek Mtne haul roads and the shoe road segment to the <br />Elk Geek coal st«kpile area. This road segment predominantly handles one-way loaded truck traffic <br />and other miscellaneous site traffic. It may, however, also periodically handle two-way loaded truck <br />traffic from coal stockpile azeas. Tltis section of haul road u about 24 feet wide, gravel-surfaced, with <br />a maximum grade of 8 percent. <br />The third segment of the mine entrance road extends from the west end of the dump station, circles <br />back to the east, crosses the employee parking area, then ties back into the fast road segment. This <br />section o[ road handles one-way truck traffic and other miscellaneous site traffic. Most of the trucks <br />that rue this road segment have passed through the truck dump, dumped their load, and are returning <br />empty. If coal u being added to the coal st«kpile, the trucks bypass the dump station and continue <br />directly to the coal st«kpile. This road segment is about 24 feet wide, gravel-surfaced, with a <br />mararnum grade of 15 percent over a distance of 150 feet. <br />An additional haul road segment was constructed to the Elk Geek coal st«kpile area for coal haulage <br />to and from the pile. Thu new segment begins at the point where the East Yard haul road crosses <br />over the Sanborn Geek Mme overland conveyor and extends about 350 feet to the north to the Elk <br />Geek coal st«kpile area. This road section has an average grade of about 9.5 percent and a pitch <br />grade of 15 percent for about 250 feet. Grt slopes are not steeper than 1.SH1V in unconsolidated <br />• materials or 0.25FL 1 V in rock Fill slopes are not steeper than 2H:1 V. The road is a minimum of 18- <br />feet wide and surfaced with four to six inches of gravel. During the fast phase of the Ellt Geek coal <br />st«kpile construction, the existing road (Segment 3) was used as the haul road, requiring no <br />modification other than increasing the height of the safety berm and removing the existing cattle- <br />guard. Track traffic will only use this road segment on those rare «casions when coal u being added <br />to the Elk Creek coal st«kpile bytruck or coal is being reclaimed to be hauled offsice by truck <br />Drainage control for the first segment of the mine entrance haul road u provided by roadside ditches, <br />cross-culverts, and alternative sediment control structures. Drainage control for the remaining three <br />segments is provided by the drainage and sediment control system for the Elk Geek coal handling, <br />support, and ancillary facilities area. An uphill ditch on the fast road segment drains through an <br />alternative sediment control structure prior to release to the existing ditch that parallels the railroad <br />right-of-way. Drainage design details are provided in Exhibit 2.05-E3, Drainage and Sediment <br />Control Plan. <br />Sanborn Geek Mine Hatil and Associated Access Aoads - C]assificauon of the haul road which <br />rims from the Elk Geek coal handling, support, and ancillary facilities area [o the Sanborn Creek <br />Mme ponak u based on temporary use of [he road for coal haulage during constmttion of the <br />Sanborn Creek Mme overland conveyor and the potential for use for haulage of coal, coal refuse, or <br />mine development waste during an emergency or if the conveyor is down. For purposes of <br />characterization and discussion, this road can be segregated into three segments. For all road <br />segmenu, road width and grade are appropriate for the volume of traffic and weight and speed of <br />vehicles that use the road. The road comdor, which u 30 to 40 feet wide, contains both the haul road <br />and the Sanborn Geek Mrrte overland conveyor. The road is approximately 4,000 feet long, gravel- <br />surfaced, with a minirrnim travel width of 12 feet, a typical road width of 20 to 30 feet, and a <br />. maximum pitch grade of 5 percent. In two areas, road width is increased to about 40 feet to provide <br />a passing zone for trucks traveling in opposite directions. Maximum speed limit for this road is 15 <br />miles per hour. Cut slopes are no steeper than 1.SH:1 V and embankment slopes are not steeper than <br />2H:1 V. The entire road u within the mine disturbance azea as defined by Rule 4.05.2(4) and many of <br />PR04 2.05-25 Revised August 2000 <br />