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2017-06-05_GENERAL DOCUMENTS - C1981012
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2017-06-05_GENERAL DOCUMENTS - C1981012
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Last modified
6/22/2017 8:38:10 AM
Creation date
6/22/2017 7:24:35 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981012
IBM Index Class Name
General Documents
Doc Date
6/5/2017
Doc Name Note
(Revised) RN6
Doc Name
Proposed Decision and Findings of Compliance
From
DRMS
To
New Elk Coal Company, LLC
Permit Index Doc Type
Findings
Email Name
RDZ
JRS
Media Type
D
Archive
No
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Applicant Violator System (AVS) checks were conducted by OSM on 8 December 2015, 13 July <br />2016, and 22 February 2017. Based on all three checks, there were no violations retrieved by the <br />system. <br />On May 11, 2017, the Division proposed to approve the application for renewal. <br />Description of the Environment <br />The New Elk Mine, located approximately 24 miles west of Trinidad, Colorado, is located in a <br />plateau area. The elevation of the surface facilities ranges from 7,400 to 7,800 feet. Land use in <br />the area consists of cropland, rangeland, pastureland, and wildlife habitat. Livestock grazing and <br />hay production on irrigated lands are the main agricultural practice conducted in the general area. <br />A variety of large and small mammals, birds, fish, amphibians, and reptiles are permanent or <br />temporary residents of the area. <br />The New Elk Mine is located in the western limb of the Raton Basin. The Raton Basin is a <br />broad, asymmetric syncline whose axis trends north -south. Previous mining at this site was <br />entirely within the Allen Seam, stratigraphically located in the Raton Formation (Upper <br />Cretaceous and Paleocene). The Poison Canyon Formation (Paleocene) unconformably overlies <br />the Raton Formation. The Poison Canyon Formation has a thickness of approximately 200 feet <br />and occurs only as small, isolated outcrops above an elevation of 8,000 feet. Unconsolidated <br />Quaternary alluvial and colluvial deposits overlie the Raton Formation in the low-lying areas. <br />The rock strata dip approximately two degrees to the north-northeast. The permit area contains <br />one steep, normal fault trending east-northeast with vertical displacement less than 25 feet. Four <br />coals seams are of mining interest in the New Elk Mine permit area and include (from bottom to <br />top) the Allen, Apache, Maxwell and Blue Seams. Both the Allen and Apache Seams attain <br />mineable thickness throughout most of the proposed permit area, whereas the Blue and Maxwell <br />Seams are more local in extent. The rocks immediately above and below the seams consist of <br />interbedded sandstone, siltstone and mudstone. Detailed information on the stratigraphy of these <br />seams can be found in the 6A map series. Some key facts about these seams follows. <br />• The thickness of the Allen Seam varies from 2 to 8 feet. The Allen Seam lies from 450 to <br />900 feet below the surface. <br />• The Apache Seam is stratigraphically located 20 to 50 feet above the Allen Seam and has <br />a thickness ranging from 1 to 6 feet. <br />• The Maxwell Seam is located 25 to 50 feet above the Apache Seam and has a thickness <br />ranging from 1 to 5 feet. The Maxwell Seam was extracted in the Golden Eagle Mine <br />which was a longwall operation. The seam thins westward from the Golden Eagle <br />towards the proposed permit area where it averages 2.5 feet thick. This seam is not <br />prominent in the New Elk mine plan. <br />• Potentially mineable coal occurs in the Blue Seam within the northern part of the <br />proposed permit area and occurs high above the Maxwell Seam in the Upper Coal Zone <br />of the Raton Formation. The thickness is shown on Map 6A - Sheet 1. <br />New Elk Mine <br />Findings for RN -06, May 11, 2017 <br />C! <br />
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