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PERMFILE133532
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PERMFILE133532
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Last modified
8/24/2016 10:34:12 PM
Creation date
11/26/2007 1:18:22 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
X200621401
IBM Index Class Name
Permit File
Doc Date
6/27/2006
Doc Name
Revised Notice of Intent to Explorer Involving Removal
From
BTU Empire Corporation
To
DMG
Media Type
D
Archive
No
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SUPPLEMENTAL INFORMATION <br />3) Basis of Right to Enter for Exploration and Reclamation <br />Table 1, Location, Drillhole Dimensions, and Ownership, details proposed corehole locations and surface and coal <br />ownership at these sites. A map is also attached illustrating exploration locations. All but one of the proposed drill <br />sites are on lands where the surface and minerals are owned by the State of Colorado. Site PDS-06-08 is located on <br />surface owned by BTU EC, a wholly-owned subsidiary of Peabody Energy. For the State (ands, Lease C-3182 <br />allows BTU-EC, as the leaseholder, to utilize as much of the surface as needed to conduct mining and related <br />operations (includes exploration). <br />4) Description o£ Land to be Affected <br />The ten exploration sites are located in Township 6 North, Range 91 West, Sections 29, 30, 31, and 32, as shown on <br />Maps 1 and 2. Six of the ten proposed exploration sites are in areas previously disturbed by surface mining <br />activities (Trapper and Williams Fork Mines). No additional cultural resource clearances are required for these <br />sites. A cultural review completed in 2005 for the 4 remaining sites found no cultural resources requiring <br />protection. Review of the proposed locations by the Colorado Division of Wildlife did not identify any potentially <br />impacted resources requiring avoidance or specific mitigation measures (refer to accompanying documentation). <br />The coreholes will intercept the Twentymile and/or Middle Sandstones, which are near the up-dip outcrop. No <br />impacts are anticipated to these units, as a result of the proposed exploration activities, and no significant sustained <br />groundwater flows have been encountered by previous drilling in the area. <br />Surface Toooeraohy -The general topography of the area is characterized by a relatively gentle north-northeast <br />facing dip-slope, extending from the Williams Fork Mountains to the south to the Big Bottom Valley of the Yampa <br />River. Localized topographic features associated with the Williams Fork Anticline and Round Bottom and Big <br />Bottom Synclines result in north-south trending valleys and ridgelines, including the valleys of both the northward <br />flowing Williams Fork River, which joins [he Yampa River along the southern margins of Big Bottom, and the <br />Yampa River, which flows southward from this confluence. Topographic relief in the proposed exploration area is <br />approximately 1,300 feet, ranging from 6,130 feet to 7,400 feet. <br />Geoloeic Setting, -Economically important coal-bearing strata of the project azea are part of the Williams Fork <br />Formation of the Mesaverde Group. The coals of primary economic interest are designated as the Lower and <br />Middle Coal Groups, and include the E, F and H coal seams. These units and their stratigraphic sequence are <br />illustrated by Figure 1, Typical Stratigraphic Column. <br />The proposed exploration area is located between the Axial Basin Arch, to the southwest, and the Sand Wash <br />Basin, to the northeast. Stratigraphically, the Lower Coal Group was deposited between two regressive sandstone <br />deposits. Surface expressions of these two sandstone units, the Middle Sandstone Member of the Williams Fork <br />Formation, and the Trout Creek Sandstone Member of the Iles Formation appear as prominent cliff-forming units <br />throughout the Williams Fork Mountains. <br />The coal seams in the project azea are associated with the Williams Fork Anticline and Big Bottom Syncline, which <br />both trend and plunge to the northwest. On the limbs of the synclinal basin, dips range from approximately 8 to 12 <br />degrees, steepening on the west flank of the Williams Fork Anticline to a maximum of approximately 45 degrees. <br />Significant faulting exists to the north and south of the project area, and along the axis of the Williams Fork <br />Anticline. <br />C:\D000ments and Settings\jrb\Local Settings\Tempomry Internet Files\OLK259\2006 Empire NOI Appl Forrn Rl.doc Page 6 of 15 <br />
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