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15 <br />motor, 60:1 gear reducer, hoist drum assembly, and brakes. The hoist will be placed <br />on new foundation housed within a 20 Ft by 40 Ft metal building. The tower is <br />designed to support a 7 Ft sheave wheel to deflect the 1.5 -inch wire rope down the <br />17- degree slope. The details of the foundations are included in Exhibit 28 -Bond <br />Calculations. <br />A discussion of the new access and new light use road that are associated with the <br />Bates Portal follows. Typical cross sections are shown on Map 11 -Sheet 1 East Portal <br />Roads, Slope Track, and Cut Areas. The roads are shown on Map 12 West Portal <br />Area Roads, Utilities, and Facilities. <br />A discussion of the haul road to the RDA associated with TR -66 follows. Typical <br />sections are shown on Map -11 Sheet 1 East Portal Roads, Slope Track and Cut <br />Areas. Sedimentation control is shown on Map -13 Site Plan East Portal Facilities. <br />Haul Road and Access Road Location <br />Haul roads and Access roads will to the extent practicable; be located on ridges or on <br />the most stable available slopes to minimize erosion. <br />Haul Road and Access Road Design and Construction <br />The Bates Portal access road runs from the Bates Portal on the east to an existing <br />access road to the west, a distance of about 410 feet at a constant grade of 10 percent. <br />Cut slopes are not steeper than 1.5h: I in unconsolidated materials or 0.25h: I in <br />rock. Embankment slopes are not steeper than 1.5h: Iv. The north side of the access <br />road is supported by retaining walls. <br />The RDA haul road runs from Highway 12 to the RDA, a distance of 1830 feet. The <br />road will have a 0 percent grade for the first 40 feet per CDOT Access Code <br />requirements, and then remain at a constant grade of 10 percent until tying into <br />original ground. The haul road width will vary from 24 -30'. Cut slopes are not <br />steeper than 1.5h: I in unconsolidated materials or 0.25h: I in rock. Embankment <br />slopes are not steeper than 2h: 1 v or 1.35h: I where embankment is 85% rock. <br />The existing RDA road will be converted to a haul road by TR -70. Plan and Profile <br />Drawing Map 1 l- Sheet 4. The road begins north of SH -12 and traverses a side slope up to <br />the RDA. The road is approximately 2,300 feet long. The road meets the cut and fill slope <br />requirements under Rule 4.03.1(3)(d <br />& e) The cut slopes are no steeper than 1.5h:1 v except in rock where the cut slopes may <br />be 0.25h:1 v. The fill slopes are no steeper than 2h:1 v except where there is 85% rock in <br />the fill where the fill slopes may be steepened to 1.35h:1v. The haul road has and overall <br />grade of less than 10 %. The maximum grade on the road is less than 15 %. The road is out <br />of compliance with Rule 4.03.1(3)(a) because there is an 800 foot long segment of road <br />that exceeds 10 %. Steep grades on a haul road can have adverse effects on safety and the <br />environment. NECC has adopted the following rules and operating procedures to mitigate <br />safety and environmental concerns. The width of the haul road varies with a minimum <br />width of 15 feet. The road is plated with gravel. NECC plans to utilize up to <br />30 ton capacity articulating trucks to haul coal mine waste to the RDA. These truck are <br />Section 2.05 TR -70 03/02/2015 <br />