1988-04-29_PERMIT FILE - C1981008A (54)

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TABLE 21-5 Topsoil Salvage Volume by Soil Type for the Various Disturbance Categories During the Permit Term (1989-1990), Nucla East Mine, Montrose County, Colorado. April 1988. Area Al Area 82 Area C3 Area D4 Area E5 Area F6 Total Topsoil Salvage Affected Topsail Affected Topsoil Affected Topsoil Affected Topsoil Affected Topsoil Affected Topsoil Affected Topsoil Topsoil Depth Area Volume Area Volume Area Volume Area Volume Area Volume Area Volume Area Volume Type? (feet) (acres) (ac-ft) (acres) (ac-ft) (acres) (ac-ft) (acres) (ac-ft) (acres) (ac-ft) (acres) (ac-ft) (acres) (ac-ft) tE 0.8 5.1 4.1 2.8 2.2 0.6 0.5 10.5 8.4 11.9 9.5 6.0 4.8 31.8 25.4 1EW 1.2 0.2 0.2 0.4 0.5 0.5 0.6 0.6 0.7 3.5 4.2 3.6 4.3 8.6 10.3 30C 2.1 5.8 12.2 2.0 4.2 12.6 26.5 5.8 12.2 3.0 6.3 3.8 8.0 27.2 57.2 D70B 4.3 0.0 0.0 0.0 0.0 0.0 0.0 1.8 7.8 14.6 62.8 2.1 9.0 18.5 79.6 N i 808• 2.4 2.1 5.0 1.0 2.4 0.8 1.9 1.3 3.1 6.6 15.9 7.0 16.8 16.7 40.1 N Ln 810 0.0 0.0 0.0 0.0 0.0 7.8 0.0 1.2 0.0 3.0 0.0 4.2 0.0 16.2 0.0 DL8 0.0 0.0 0.0 0.2 0.0 1.1 0.0 0.9 0.0 1.6 0.0 0.5 0.0 4.3 0.0 TOTAL: - 13.2 21.5 6.4 9.3 23.4 23.1 22.1 32.2 44.2 98.7 27.2 59.0 123.39 212.69 1First lift, second lift, and mixed single lift topsoil stockpile locations 2Office, shop, and associated equipment access roads' z 3Pond 007, explosive storage area, dragline erection site, and associated access roads < 4Box cut spoil stockpile, haul road entrance, and south part of equipment access road (all east of Pits 1-10) r(D SPits 1-21, advanced topsoil salvage, and box cut spoil stockpile area (Mine Year 1989) n 0 6Pits 22-37, 1 pit advanced topsoil salvage, and box cut spoil stockpile area (Mine Year 1990) Co Includes only those soil map units which will be disturbed by mining activities 00 8DL - Disturbed Land including ponds, residences, farmyards, and roads 00 9The proposed disturbance area which will require topsoil replacement for the Nucla East mine site is 121.1 acres. This total does not include topsoil stockpiles or the East-West County road (2.2 acres). The volume of topsoil to be salvaged within this mining area is 212.6 acre-feet. Therefore, the mean topsoil replacement depth will be approximately 1.8 feet.