2014-10-31_PERMIT FILE - C1981044A

• Permit No: C1981044A
• IBM Index Class Name: Permit File
• Doc Date: 10/31/2014
• Section_Exhibit Name: 2.05 Operation and Reclamation Plans
• Media Type: D
• Archive: Yes

intervals. The ditches will be maintained until the vegetation becomes established. It is anticipated that the ditches
would fill with sediment in the initial years following vegetation establishment. On completion of backfilling and
grading operations, the salvaged plant growth media will be redistributed over the area. The postmining topography
of the area is shown on the Reclamation Plan Map (Map 29).
The regraded areas will be planted with a cover crop and subsequently drill- seeded with the appropriate seed mixture
( rangeland/wildlife for sloping areas and pastureland for flatter areas). The seed will be applied with a rangeland drill
at the rate of 17.25 pounds PLS /acre for the rangeland/wildlife mixture and 17.0 pounds PLS acre for the pastureland
mixture. Where it is necessary to broadcast the seed, the seeding rate will be doubled.
No. 9 Mine Portal Area and 7 -North Angle Well
As previously discussed in Section 2.05.3, Operation Plan - Permit Area, an additional coal refuse disposal site was
established in the No. 9 Mine Portal Area. Prior to establishment of the refuse disposal area, electrical equipment,
surface coal haulage equipment (conveyor belt system), ventilation equipment, and miscellaneous mining scrap
located in the portal excavation were dismantled and removed from the site, the portal entries, located at the bottom of
the portal excavation were sealed and covered with 15 feet of material, and all exposed coal seams were covered with
a minimum of four feet of inert backfill material. In conjunction with coal refuse placement activities, a monitoring
well was established adjacent to the coal refuse disposal area. The well is monitored on a quarterly basis, consistent
with schedule and parameters outlined in Exhibit 29.
Once the initial backfilling was completed, waste material including coarse reject was hauled to the refuse area and
placed and compacted in 2 -foot lifts. Placement continued until the refuse reached a level four feet below the planned
reclaimed surface. In 2008, as part of a larger site reclamation project, the No. 9 Portal Warehouse Building was
demolished, a solid waste disposal site was permitted and established in the portal backfill area, and the remainder of
the portal excavation and refuse area were backfilled and covered with a minimum of four feet of suitable material
using materials stockpiled from the original portal excavation. The reclaimed areas were then graded to blend with
the surrounding terrain and to reestablish effective drainage consistent with the design postmining topography (Refer
to the Reclamation Plan Map, Map 29). The regraded surface was left in a roughened condition to minimize slippage
and promote root growth and moisture infiltration. Soil material, which was temporarily stored adjacent to the No. 9
Portal Area, was redistributed over the regraded area to a depth of approximately 6 inches.
The No. 9 Dewatering Installation below old County Road 13 (7 -North Angle Well) will be reclaimed when it is no
longer needed to support ongoing or anticipated future operations. Reclamation will include powerline removal,
building and facilities removal, and plugging and sealing of the dewatering borehole, consistent with applicable State
Engineer requirements. On completion of facilities removal, the facilities area will be regraded. The culverts will be
removed, and the ditch along the side of the road will be maintained until the 5A Portal Area is reclaimed. The entire
area, with the exception of the No. 9 Dewatering Installation, will be returned to a postmining land use of cropland or
pastureland. The No. 9 Dewatering Installation will be returned to a postmining land use of rangeland/wildlife. The
reclaimed areas either have been or will be reseeded with a cover crop and the appropriate reclamation seed mixture
using a rangeland seed drill. Where necessary to apply the seed by the broadcast method, the seeding rates are
doubled. It is anticipated that the area to be planted to cropland will be seeded with a cereal grain, most likely Winter
Wheat, at the rate of 60 pounds /acre.
No. 9 Coal Refuse Disposal Area
Reclamation of the approved refuse disposal area has been an ongoing process, with reclamation of portions of the
area as those areas are filled to the final design elevation.
Given the sloping topography of the refuse disposal area, initial pile construction began at its southern limits, with the
initial lifts progressing to the north until the pile surface is level. Once the pile was level, construction was generally
from north to south. Lift thicknesses was about 24 inches and each lift was compacted to 90 percent of maximum dry
density determined by T -99 procedures. Pile construction specifications are presented in Exhibit 21, Waste Disposal
Site.
TR14 -36 2.05 -29 Revised 03/10/14