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From: JES To: Dan Mathews Date: 3112/2002 Tme: 2:49:12 PM <br />• 3.9.3 BACKFILL AND GRADING -MINE SITE <br />Interim reclamation will occur prior to final reclamation of the mine portal bench. <br />Coal material will be hauled from the Loma Loadout and placed at the base of the <br />portal bench cut slope. The cooly material placed on the Munger Mine bench will be <br />spread and compacted in compliance with 4.10.4{3)(a) and (b) and such placement and <br />compaction win be inspected and certified by a qualified registered engineer, in <br />compliance with 4.09.1(11)(a) and (b). This coal material will then be covered with two <br />feet of non-toxic cover and reseeded with a stabilization seedmix. Compaction of the <br />cover material will be performed during final reclamation. The topsoil seedmix <br />described on page 3-11 will be used for stabilization. The reclamation of the Loam <br />loadout and interim reclamation at the Munger mine bench will be completed by April <br />21, 2002. <br />The mine site will be recontoured using the material that is stored on the mine <br />bench, by excavating the premining drainage that exists under the mine bench, and by <br />removing a small amount of material from the crest of the highwall to help reduce the <br />slope in that area. <br />In accordance with the request of the BLM, the area at the crest of the highwall <br />to be removed to help provide stable 2H:1 V slopes will be staked at 50-foot intervals. <br />This will allow the inspection of the area by the BLM prior to earthwork to confirm the <br />area will have less than 0.3 acres of additional disturbance and the reclamation will <br />conform with figure 3.1-7. BLM will then give verbal and written approval to proceed. <br />The roof fall material stored on the mine bench; as well as, the interim <br />reclamation material from the Loma loadout will be placed against the existing toe of <br />the slope at the portals prior to backfilling with the relatively clean dirt stored on the <br />mine bench. Where the coal seam is now exposed or coal is backfilled, the areas will <br />be covered with at least four feet of non-toxic, noncombustible material. The final <br />reconfiguration will involve excavation of minor amounts of material from the top of the <br />slope to complete the reconfiguration. The material taken from the top of the slope <br />will generally be taken from the alignment of a premining road and will create little <br />additional disturbance. The final configuration will have slopes of 2H:1 V in the main <br />area of the mine site. <br />Prior to grading of the portal area for mining, a livestock trail existed from the <br />bottom of the canyon near the mine site to the area above the mine. Reclamation of <br />the mine site will include re-establishment of this trail along the approximate original <br />route as shown on figure 3.1-7. The trail still exists on the slope below the mine and <br />was used to install and will be used to remove the power poles. Minor regrading and <br />installation of water bars will be accomplished with a small track dozer that will also be <br />used remove the power poles and conductor. In the portal area, the trail will be <br />re-established by creating a four foot wide nearly level bench along the eastern slope. <br />The livestock trail will be sloped about 2 percent toward the drainage to allow for <br />proper run off and minimize erosion. Water bars will also be created as shown on <br />Figure 3.9-7. This will allow access of cattle to the main drainage behind the portal <br />area where access to areas above the portals by cattle is available. <br />Page 1 of 1 <br />_~ M" Page 3-28 3/02 <br />