2010-05-07_PERMIT FILE - C2006085 ‎(2)‎

• Permit No: C2006085
• IBM Index Class Name: Permit File
• Doc Date: 5/7/2010
• Section_Exhibit Name: 2.05 Operation and Reclamation Plans
• Media Type: D
• Archive: No

described in Section 2.05.4, to provide adequate vegetative cover
establishment. Drainage from topsoil stockpile areas will flow to a
sediment pond by way of ditches or will be contained and directed
through a designed sediment control structure capable of reducing
suspended solids concentrations to within regulatory limitations.
Information concerning locations of topsoil piles and projected storage
volumes is shown in Section 2.05.4, Topsoil Removal, Storage, and
Redistribution Plan, of the permit application.
_Mine Waste Permanent Stockpile
Coal crushing and screening operations will result in coal waste which
will be placed in a permanent stockpile located southwest of the main
facilities area. The waste material is anticipated to consist primarily of
out -of -seam roof and floor rock comprising mudstone, siltstone, and
sandstone, and a minor quantity of coal that remains attached to rock
strata. Raw coal crushing and screening operations will separate a
fraction of the waste rock material from the raw coal product, with the
waste materials to be transported to the waste pile for placement and
disposal. - -
The permanent waste pile will be located in an area of gently sloping
terrain that will be excavated to provide access to the adjacent facility
bench area. Excavation of the site will result in removal of all topsoil
and organic materials prior to placement of waste material.
Surrounding areas will be graded to drain to the adjacent south
collection ditch. The location of the proposed waste bank, including the
proximity of diversion and collection ditches, is shown on Map 12. This
area contains no documented seeps or springs, and the surface
material is stable. Locating the waste bank at this site allows potential
future expansion, if necessary, towards the northwest against the toe
of the adjacent bluff, with accompanying reconstruction of the
diversion ditch to a higher location.
Based on a survey of the area, no known abandoned mine workings
situate below the proposed waste pile site. Northfield's proposed
workings will be developed immediately west of the site, and as
described in Section 2.05.6, will be designed to minimize impacts to
the stability of the waste pile.
Coal waste will be transported to the disposal area utilizing end dump
trucks and /or front -end loaders. The waste will be spread in lifts and
wheel compacted. In accordance with Rule 4.10.1, construction of the
proposed waste pile will include the following:
2.05.3 -18 Revised 12/04/09, TR -01