PERMFILE59188

• Permit No: C1982056A
• IBM Index Class Name: Permit File
• Doc Date: 11/22/2006
• Section_Exhibit Name: 2.05 Operation and Reclamation Plans Part 2
• Media Type: D
• Archive: Yes

associated relief culverts have been designed to address site-specific drainage for both the TCC and
County portions of the road. Drainage designs are provided in Exhibit 8AA, Haulroad A -Drainage Designs.
During construction and until the site has stabilized, appropriate temporary drainage control measures including,
but not limited to, placement of straw wattles and/or silt fence, were used to control surface runoff and sediment.
• Most of the road is constructed on the existing Haulroad A alignment and required only minor cut and fill work to
establish the design road profile. Where road embankment construction was required, the embankment footprint
was scarified to a depth of 8 inches following topsoil removal. Suitable fill materials were then placed in uniform.
6-8 inch lifts and compacted to at least 95 percent of Standard Proctor Density with moisture levels within 3 percent
of optimum consistent with ASTM D-698 or AASHTO T-99.' Actual road construction involved placement and
compaction of a 24-inch pit-run sand and gravel sub-base, followed by a 6-inch CDOT Class 5 aggregate base
course, topped by 6 inches of -3/4-inch gravel material. All road construction materials were free of organic,
potential acid- ortoxic-forming, and frozen materials.
A reinforced concrete scale foundation and wash-down water collection pit were constructed along the south edge
of Haulroad A, between stations 4+00 and 7+00. The base of the wash-down pit is approximately 8 feet below the
road surface and is accessed by a short graveled ramp on the south side of the truck scale, to facilitate inspection
and clean-out of accumulated sediment. Wash-down water for the truck-scale is supplied by a buried water line on
the west edge of Haulroad A, which comes from the Belt-Out-Back (BOB) area. Periodically, minor accumulations
of wash-down water are pumped from the water collection pit, through a buried pipeline to the first cell of existing
Sedimentation Pond B. Power for the truck-scale is supplied by a drop line from the adjacent powerline.
Once the road is no longer needed, the road and associated drainage features will be reclaimed by ripping,
scarifying, and grading road surfaces, fills, and ditches to blend with the surrounding terrain. Any road materials
that are incompatible with revegetation and postmining ]and use objectives will be removed and disposed of in the
portal backfill area. Minimal topsoil is available for reclamation, given that much of the new Haulroad A was
constructed in previously distwbed areas. TCC will utilize all available stockpiled topsoil, supplemented as
necessary by suitable substitute growth media. Potential growth media will be analyzed for nutrients and, if
indicated, soil supplements will be applied. Following soil substitute replacement, reclaimed road areas will be
• seeded with the standard revegetation seed mix.
2E. Haulroad C
Haulroad C, formerly a portion of the county road, is an access corridor previously used and maintained by CYCC
since the mid-70's. In order to accommodate hauling of stoker coal from Tipple 2 to the stoker coal stockpile, the
existing road was upgraded to a coal haul road. Haulroad C extends from the Tipple 2 road intersection due south
of Pond C to the current railroad crossing where it connects with Haulroad B-2. Because it was a previously
disturbed area, no new disturbance was required for the upgrade and no topsoil was available for salvage. The
overall grade of the road is not steeper than 10 percent, and there are no sections that exceed 15 percent. The
location of Haul Road C is shown on Map 24, Surface Facilities. The centerline profile for Haulroad C and typical
haulroad cross-sections are shown on Map 30, Road Profiles and Cross-Sections.
In conjunction with the road upgrade, a ditch was established parallel to the road to intercept upland drainage. The
ditch is triangular, in cross-section, and was stabilized through vegetative plantings on the bottom and sideslopes of
the ditch. Drainage from the clean-water diversion flows to a 12-inch culvert, where it is passes under the road and
into Foidel Creek. The culvert inlet and outlet are protected by rock headwalls, or similar erosion protection. A
rock filter dam was constructed downstream from the outlet of the culvert. The location of the ditch and culvert are
shown on Map 24, Surface Facilities, and ditch and culvert design information is provided in Exhibit 8.
The original road was approximately 40 feet wide and ran along the toe of the slope. During road upgrade planning
and construction, it was determined that the existing road sub-base was adequate, therefore, the road upgrade
involved placement and compaction of two six-inch lifts of 6-inch minus pit run rock over the existing sub-base.
Each lift was compacted with a vibrating compactor or similar equipment. Fills were placed, compacted, and
crowned [o promote effective drainage from the road, and atwo-inch layer of minus 1'h-inch crushed gravel was
• then placed and compacted as a surfacing layer.
TR06-55 2.05-70 10/06/06