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GENERAL45129
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GENERAL45129
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Last modified
8/24/2016 8:13:53 PM
Creation date
11/23/2007 1:34:41 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
General Documents
Doc Date
8/16/2007
Doc Name
Environmental Impact Statement-Final
From
US Foreset Service
To
DRMS
Permit Index Doc Type
Other Permits
Media Type
D
Archive
No
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Approximate new road access disturbance is <br />up to 62.6 acres (approximately 6.8 acres in <br />the West Elk IRA; 6.6 acres associated with <br />Lease COC-1362, and 0.2 acres on Lease <br />COC 56447) over 12 years. These roads <br />would be for project and administrative use <br />only, and would not be available for public <br />use. These mileages would be <br />decommissioned by obliteration after project <br />use. <br />• An existing life of mine (i.e. to approximately <br />2030) administrative access road in the SEl(4 <br />Section 27, T 135, R 90W would be re-routed <br />to mitigate existing resource and maintenance <br />problems due to geologic hazards, <br />sedimentation and slope steepness. The <br />existing administrative access road would be <br />decommissioned by obliteration upon <br />construction of the re-route. The existing <br />access route and proposed re-route are both in <br />the West Elk IRA. The re-route is about 0.6 <br />miles, and would decrease the mileage of the <br />existing route by 0.6 miles. The re-route <br />would be decommissioned by obliteration at <br />the end of mine life. The re-route would be for <br />on-lease activity and administrative use only, <br />and would not be available for public use. <br />Total miles of new road in IRA would be 2.3 <br />miles. <br />Per decisions issued in 2002 and 2006 Long <br />Draw Saddle life of mine road will be <br />decommissioned to an ATV trail. <br />• At the end of the project, Poison Gulch Road <br />(NFSR 711.X) the majority of the route <br />except the very northern end would change <br />from a full sized system road to a System <br />ATV trail (which is the current primary use of <br />the route). <br />The development of a road network in the project <br />area poses a challenge because it is difficult to <br />estimate project needs due to topographical and <br />geological influences. Therefore, road placement is <br />an estimate and would be refined in the field with <br />appropriate design standards and additional <br />mitigation measures added on asite-specific basis. <br />Additionally, well and pad placement would be <br />based on need as established by the conditions in <br />the mine as well as surface conditions and will be <br />designed site-speciScally as the project progresses. <br />It is estimated that a lower number of wells would <br />actually be needed than are proposed at this time. <br />Relief from Lease tipulation <br />Ventilation shaft con tructiont time is estimated at <br />less than 12 months a~Id would be constructed prior <br />to underground minelloperations reaching the shaft <br />location. The Proposed Action Altemative includes <br />granting relief from YVinter Range Restrictions on <br />lease C-1362 (Decem~er 1, 2007-April 30, 2008) to <br />allow these structures to be installed before mining <br />operations reach the rea. If mine operation timing <br />permits, a less disruptive shaft construction method <br />may be used which would result in lower surface <br />disturbance, less spoil, and would not require relief <br />from the big game winter range lease stipulations. <br />While currently not anticipated, site-specific relief <br />from lease stipulations relating geohazards, <br />moderate or steep slc~>pes, or riparian areas could <br />arise during project implementation. The scale of <br />stipulations mapping Imay not identify all surface <br />features where the stipulation applies. This could <br />require additional IDT review and analysis. Relief <br />from the riparian stiptiilation would require specific <br />authorization. <br />Proposed Activities) in Inventoried Roadless <br />Area <br />The Proposed Ac~[ion Altemative includes <br />construction of MDW locations and temporary road <br />construction the West Elk IRA. Approximately 2.3 <br />miles of temporary road construction is proposed on <br />these leases in the West Elk IRA. The road <br />construction is necessary to access to 24 sites for <br />methane drainage wells, 21 of which would be <br />located in the IRA. Roads proposed in the IRA <br />would be for project sand administrative use only, <br />and would not be available for public use. A break <br />down of activities proposed in IRA per lease is as <br />follows (see full lease ~ escriptions on page 6): <br />C-1362 <br />• Proposed on <br />the 160-acre <br />' Conventional construct <br />constmction activities on ~ <br />from [he shaft sinking n <br />construction pad, inch <br />Conventional sink/line con' <br />down to bedrock to instal! <br />for a hoist. The shaft is th <br />where all excess rock is ren <br />temporary storage. A conci <br />the drilling and blasting pro <br />S-8 <br />Deer Creek Ventilation Shaft and E Seam <br /> <br />1 <br />1 <br />1 <br /> <br /> <br /> <br /> <br /> <br /> <br />1 I <br />portion of lease (including <br />adification): 13 methane <br />m (top down) consists of all ' <br />ie surface. All materials produced <br />Ist temporarily be stored on the <br />ding mine water discharge. , <br />mction is completed by excavating <br />~ concrete collar as the foundation <br />n sunk using drilling and blasting <br />oved and brought to the surface for ' <br />rte shaft lining would be placed as <br />eeds. <br />Methane Drainage Wells FEIS <br />
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