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1` • S. S. Shuey Page 2 April 24, 1992 Culvert # - Size Design Flow HW/D Handbook Culvert Head- water Depth Ditch Depth #1 - 12" 0.53 cfa ~ 0.6 < 0.6' 0.7' #2 - 18" 3.65 cfe 0.75 1.1' 1.1' Reclamation 1. An allowance was made for the removal of the two new concrete foundations in the reclamation cost estimate, on the enclosed revised pages E-3, E-4, E-5, 2.05-37iv and 2.05-38iv. 2. Reclamation of the haul road to the Elk Creek coal stockpile area will be accomplished during the reclamation of the site with no special treatment considered necessary. Section X-X on Map 5 shows that the haul road bench, located below the access road, is backfilled with material excavated from the Elk Creek coal stockpile pad. This fill will be placed on the scarified haul road and should provide adequate depth to provide good growth media. 3. Pond B will become the central yard pond for the sedimentation and drainage control during reclamation. A reclamation estimate for the central yard pond is included in the current reclamation estimate (Appendix E- 1, page 1, sedimentation reclamation, 3 ponds, $4861). Pond B and the central yard pond have a design capacities of 1.76_ and 0.33 acre-feet_respectively-.~ Therefore Pond B will have 1.43 AF, (1.76 - 8.33), excess capacity which can be used to bury the coal residue mentioned in item 4 below. _ _ __ 4. The two coal stockpile areas have a combined areal extent of 97,000 square feet. A total of 1800 cubic yards of material would be removed from the stockpile areas assuming 6-inches of coal residue must be removed from the entire area. This 1800 cubic yards represents 1.1 acre-feet of material which will be placed in Pond B when Pond B is converted to the central yard pond. The reclamation estimate shown on pages E-3, E-4, E-5, 2.05- 37iv and 2.05-38iv were revised to provide for the cost of handling the 1800 cubic yards of coal residue.