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Page Two In general the eastern bank of the appears to be stable and relatively the vicinity of Station 13+00 and occurred in the vicinity of that sam be attributed to collection of surfac draw on which the road will be located dry. However, a wet spot was noted in it appears that a slide might have e station. The wetness of the area may e runoff. Cut Slopes Based upon Baker Engineering's reconnaissance survey, the shear strength parameters of C = Z00 PSF and d = 30° are believed to be conservative. Using these parameters, a critical height of approximately 30 feet is obtained for the slope cut at 1H:1V. This simplified analysis confirms observations of cut slopes along the Colorado State Highway 133 in the vicinity of the mine site. This slope was used for cost estimating purposes and the final slopes may vary somewhat depending upon the field conditions. In general, the east bank of the draw appears to be stable and relatively dry. However, Baker Engineering's field observations indicated that a slide might have occurred in the vicinity of station 13+00. Therefore, it was recommended by Baker Engineering;;that a bin wall. 6e constructed between stations 13+00 to 15+00, Drawing #MG-RC-011. Access Road Construction and Reclamation Cost Estimates -_.;. The estimated construction cost is $671,880. Estimated reclamation cost is $275,000. The .reclamation plan for the access road has been ,revised from that presented in ;therapplication. WECC intends to backfill the road to its approximate original contour and reclaim as part of the Mt._Gunnison surface facilities area in accordance with Section 4.4 of the Mining and~Reclamation Plan. In the original application it was indicated that the access road would be kept open for use as access to the grazing areas in the 'Vicinity of the refuse pile. However, since the main mine access road off of which this access road would turn will be fully reclaimed, there is no point in leaving the refuse pile access road open. • The detailed breakdown of construction and reclamation costs for the access road are presented in Tables I and II of this letter. As shown on these tables, the major cost item is the excavation and backfilling of~the on-site materials. The unit prices of $7.00 per cubic yard for excavation and $4.00 per cubic yard .for. backfilling used in the :estimation are somewhat higher than for normal road work. However, considering the terrain, these units prices are representative. ._ ~~ .• ~:: REFUSE PILE SITE CONSTRUCTION COST ESTIMATES T': - ~~~ `'' ~'` _'s'. .. Construction costs fon:~the initial 10-acre 'pha'se. of~:tde :refuse"pile are presented in Table III.