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-40- <br /> Proposed post-mining contours for the D-Portal Area are shown on Maps 43, 44, <br /> 45, 46, and 47 and on Map !'$4 for the ventilation entry. The regrading plan <br /> for the water tank storage' area is shown on Map 55 and Map 92 for the alluvial <br /> well area. Maps 104 and 105 show the final regraded configurations of the <br /> rail loop and slot storage'. areas, respectively. <br /> Following approval of the initial permanent regulatory program permit, <br /> construction of the various surface facilities began. All earthmoving and <br /> grading operations proposed in the original permit application have been <br /> completed at the present time. No acid or toxic forming characteristics of <br /> fill material were identified. <br /> During reclamation, material from the fill areas and access and haul roads <br /> will be pushed or hauled back into the cut areas until approximate original <br /> contours have been achieved for the D-Portal Area. The permittee has provided <br /> cross-sections of the cut and fill areas showing where material will be <br /> placed. The fill will be recompacted to 90 percent maximum density in lifts <br /> no thicker than one foot. The final two lifts will not be compacted, and will <br /> be placed on the "irregular" surface of the final compacted lifts. Thus, root <br /> and water penetration will" be enhanced. Regraded slopes will not exceed <br /> 2h:ly. Generally, the slopes are much less than this. In other areas, <br /> grading of the fill material will occur to blend the fill into the surrounding <br /> • terrain. Grading will occur along the contour to minimize erosion and <br /> instability. <br /> The permittee states that all disturbed areas except for the upgraded county <br /> road, a portion of the haul road east of the county road, and coal waste banks <br /> will be graded to approximate original contours. <br /> Regraded slopes will be no steeper than 2h:ly. In some areas the existing <br /> slopes are steeper than this, but are unstable and highly eroded. The result <br /> of grading will be an overall reduction in slope which will decrease the <br /> erosional potential and increase the mass stability of the disturbed areas. <br /> Material which will be backfilled in the D-Portal Area will come from fill <br /> material in the D_-Portal Area, and from haul roads which were constructed from <br /> excess fill from the D-Portal Area. Excess fill material from the "storage <br /> area" will be replaced during backfilling to achieve AOC in the D-Portal <br /> Area. The ventilation entry, roads, and well field will be returned to AOC. <br /> In the loadout area the construction of the railroad loop and clean coal <br /> storage facility will require approximately 900,000 yd3 of fill . Of this <br /> amount, 678,000 yd3 will come from a borrow area located in the railroad <br /> loop, the remainder will be cut material . The fill material will be graded to <br /> blend into the existing topography subsequent to mining. The borrow area will <br /> not be backfilled and approximately 13 acres of a slight topographic high will <br /> be lowered approximately 30 feet. The proposed post-mining contours for in <br /> the coal storage area and rail loop are shown on Maps 104 and 105 and are <br /> . acceptable. They facilitate achievement of the proposed post-mining land use <br /> of grazing. <br /> On June 3, 1982, the Division approved a minor revision to the permit to allow <br /> Western Fuels to alter the ''final configuration of the cut slopes along the <br /> access road, refuse haul road, and the water tank access road. The previous <br /> plan called for rounding off the top of the cut slopes which would result in <br />