2017-05-18_PERMIT FILE - C1982056A ‎(6)‎

• Permit No: C1982056A
• IBM Index Class Name: Permit File
• Doc Date: 5/18/2017
• Doc Name: Pages 2.05-65 to 2.05-197.3 part 2
• Section_Exhibit Name: 2.05 Operation and Reclamation Plans Part 2
• Media Type: D
• Archive: Yes

Fish Creek Ventilation Shaft and Dewatering and Water Treatment Installation (MR07-216) - The Fish Creek
Ventilation installation had a useful life of approximately seven years, until the first set of longwall panels were
mined -out. The fan building, duct -work, and fan have been removed from the site. The borehole was temporarily
sealed, as described in the response to Rule 2.05.4(2)(g), and was used only for discharge from the excess flow
diversion line from the Fish Creek water treatment system. In 2007, the shaft installation was modified for use as a
dewatering well to replace the inoperable Fish Creek South Dewatering Borehole.
On completion of mining, and when the system is no longer required, all facilities will be removed and the site
reclaimed. Removal of the surface facilities will involve removal of the modular electro -coagulation units (2);
dismantling of surface structures, which includes the powerline, transformer and pad, any remaining chemical and
pump control equipment, buildings and pads; fencing,; stubbing -off and capping buried piping; and demolition of
building foundations. The concrete demolition debris will either be hauled to the refuse site for disposal or hauled to
a landfill.
Final reclamation of the dewatering wells and ventilation shaft will involve excavating down 4 feet from grade
around the casing, cutting off the steel casing 3 feet below grade, hanging steel decking from the top of the cut-off
casing (this decking will be 30 feet below the top of the cut-off casing), placement of 30 feet of concrete in the
casing (for a 3 -foot diameter cased hole, the 30 foot x 3 foot diameter cement plug would weigh approximately
32,000 pounds, which would be more than adequate to resist the calculated hydrostatic pressure and provide an
effective seal). The remaining 3 feet will be filled with soil, and graded to blend with the surrounding terrain. . The
access road will be graded to blend with the surrounding terrain, and the culvert will be removed. The entire area
will be topsoiled and seeded with the appropriate seed mixture.
After the facilities are removed, the site will be regraded to blend with the existing terrain and the stockpiled topsoil
redistributed over the area. The soil material stored adjacent to the site will be redistributed over the dewatering site
and reclaimed road segments will be seeded with the pastureland seed mixture. Approved permanent access roads will
remain intact for use by the surface owner. During the 10 -year liability period, TCC will maintain the road for
monitoring purposes. After bond release, the land owner will assume responsibility for the road. The northern short
section (2,500 feet) of the access road will be reclaimed unless otherwise approved by the CDRMS. The soil
windrowed or stockpiled adjacent to the road will be seeded with the rangeland seed mixture.
Rockdust Tank - After removal of the rock -dust tank and cement pad, the pit -run gravel of the truck access/unloading
area will be dispersed across the .5 acres of disturbance. The area will be ripped before the stockpiled soil is reapplied
and reseeded.
7 -North Escape Shaft - When the facility is no longer required, the shaft will be plugged and the site graded, re -soiled,
and revegetated. Steps required to abandon the shaft will include removal of surface structures, demolition of the
concrete foundation and piers, and sealing of shaft. After the surface structure is removed, the broken -up foundation
and piers will be put down the shaft, and decking will be suspended in the shaft 10 feet below -grade. The support
beams and decking will be suspended from the steel casing by steel straps (i.e. i -beams or similar support structures)
welded to the support beams. The steel straps will be welded to the existing 48 -inch diameter casing. Once this is
completed, a 24 -inch thick reinforced concrete slab will be poured in-place over the previously placed decking. The
void from the top of the concrete slab to within 5 feet of the surface will be backfilled with inert fill material
(approximately 1.4 CY) from the surrounding area. The next 2 feet of the shaft will then be filled with concrete to
form a surface plug for the shaft. Suitable fill material will be placed in the remaining 3 feet of the shaft
(approximately 1.4 CY), and then the site will be re -soiled and revegetated. The redistributed soil will be seeded
with the pastureland seed mixture.
NM) Power Borehole - Upon completion of mining, and when the power borehole is no longer needed, the facilities
will be removed and the site reclaimed. Removal of the surface facilities will involve dismantling of surface structures,
which includes the powerline, transformer and pad, road and culvert, and building. After the facilities are removed, the
site will be regraded to blend with the existing terrain, the stockpiled soil will be redistributed over the area, and the
power borehole pad and reclaimed road segments will be seeded with the pastureland seed mixture. The entire road
will be chisel -plowed after removing the geotextile.
MR 16-296 2.05— 106.2 05/10/16