2007-06-29_PERMIT FILE - C1981022A ‎(2)‎

• Permit No: C1981022A
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2007
• Section_Exhibit Name: 2.05 Operation and Reclamation Plans
• Media Type: D
• Archive: Yes

Seetion - 2.50.3
This segment of the road is approximately 900 Eeet long and has an average grade of approximately
• 9.0 percent and maximum grades of ]0 percent.
The third segment of the West Valley haul road extends from the northeast corner of the cemetery,
along the west side of Elk Creek Canyon to tie-in with the Elk Creek Canyon road above the Elk
Creek coal stockpile. Initially, this road segment only provided temporary access for haulage of soil
material from the West Valley fill area to the Elk Creek soil stockpile and limited access to the original
pre-law Elk Creek Canyon road. With development of the Elk Creek Mine, however, this segment
links the Elk Creek Canyon and West Valley haul roads to provide full access to the Elk Creek Mine
for haulage of coal, coal refuse, mine development waste, men, equipment, and supplies. This segment
of the road is approximately 1,000 feet long with a maximum pitch grade of approximately ]0 percent
over 300 feet and an average grade of 4 percent.
The Somerset Cemetery was previously accessed by portions of the main entrance road, the Elk Creek
Canyon road, and the cemetery road. Expansion of the Elk Creek coal stockpile cut-off this access at
the base of Elk Creek Canyon. The West Valley haul road now provides for public access to the
cemetery via a short connecting road at the east end of the second road segment. OMI has
coordinated with the citizens of Somerset to notify them of both the availability of access to the
Somerset Cemetery and the need to check in at the mine office prior to proceeding to the cemetery as
a safety consideration.
Drainage control for the West Valley haul road is provided by roadside ditches and cross-culverts.
The uphill ditch for the second road segment drains to a culvert crossing at the West Valley Fill
switchback, with culvert discharge flowing to the uphill ditch for the first road segment. At the
bottom of the first road segment, a second culvert crosses under the road with the dischazge passing
through an alternative sediment control structure prior to release to the existing ditch which pazallels
• the railroad right-of-way. The uphill ditch for the third road segment discharges through an
alternative sediment control structure to Elk Creek at the point where this segment joins the existing
Elk Creek Canyon road. Drainage design details aze provided in Exkvbit 2.05-E3, Drainage and
Sediment Control Plan.
Elk Creek Haul Road -The Elk Creek road is a pre-law road extending from the main haul road up
Elk Creek. Expansion of the Elk Creek coal stockpile cut-off direct access to the lower portion of the
Elk Creek road. Access was reestablished via the West Valley haul road. In conjunction with
construction and development of the Elk Creek Mine, the middle portion of the existing Elk Creek
road will be upgraded as a haul road to access the Elk Creek Mine facilities from the West Valley haul
road. The lower portion of the existing road will also be upgraded as a haul road to provide direct
access from the Elk Creek Mine to the Elk Creek coal stockpile. Road upgrades will include minor
widening, placement of new or relocation of existing culvert crossings, minor cut and fill work,
grading and compaction, and surfacing with grave]. Generally, the required upgrades will involve
existing road segments, so limited additional soil removal will occur. Any soil removed will be placed
in the north Elk Creek soil stockpile for future use in reclaiming mine disturbance areas.
For purposes of characterization and discussion, the Elk Creek haul road can be segregated into three
segments. For all road segments, the designed road width and grade are appropriate for the volume
of traffic and weight and speed of vehicles that will use the road. The road will be gravel-surfaced and
approximately 30 feet wide, providing for two-way traffic over the entire road. Maximum speed limit
for this road is 15 miles per hour. Cut slopes will be no steeper than 1.5H:7 V and fill slopes 1.5H;] V
or less. The entire road is within the mine disturbance area as defined by Rule 4.05.2(4) and many of
the performance standards under Rule 4.03 are, therefore, not applicable. Road plan and profile
• configurations are shown by the General Facilities Map, (Map 2.05-M1) and a Facilities Detail Map,
(Map series 2.05-M3x). Road construction materials and designs {cut slopes, fill slopes, road gradient,
drainage, and compaction/construction requirements) for the Elk Creek haul road are compatible
with previously completed and approved designs and geotechnical analyses for the West Valley haul
road as seen in Exhibit 2.05-E4, Mine Development Rock/Coal Refuse Facility Design.
TR-43 2.05-28 Revised August 2003