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2019-12-31_GENERAL DOCUMENTS - C1981022
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2019-12-31_GENERAL DOCUMENTS - C1981022
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Last modified
12/27/2024 4:08:19 PM
Creation date
1/7/2020 9:21:16 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
General Documents
Doc Date
12/31/2019
Doc Name Note
For RN7
Doc Name
Proposed Decision and Findings of Compliance
From
DRMS
To
Oxbow Mining, LLC
Permit Index Doc Type
Findings
Email Name
LDS
JDM
Media Type
D
Archive
No
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XIIL Protection of Fish, Wildlife and Related Environmental Values <br /> A. Undeveloped lands is the planned post-mining land use for the majority of the <br /> permit area. The applicant has selected appropriate plant species and distributions <br /> to benefit fish and wildlife (4.18(5)(i)). <br /> XIV. Protection of Underground Mining <br /> A. The Division has not approved surface mining at the Elk Creek Mine, therefore this <br /> section does not apply (4.19(1) and 4.22.4(1)). <br /> XV. Subsidence Control <br /> The permit area includes three different mines which have been active through the term <br /> of the permit to date: the Somerset Mine, the Sanborn Creek Mine, and the Elk Creek <br /> Mine. These underlie different areas and, therefore, have had separate requirements for <br /> subsidence monitoring and control. <br /> A. The applicant used a subsidence control plan in accordance with Rule 2.05.6(6) and <br /> committed to adopt all measures in order to reduce the likelihood of subsidence <br /> and prevent material damage to Hubbard Creek, which was undermined by the <br /> Somerset Mine. The Division approved the plan (4.20.1(2) and 4.20.3(1)). There <br /> were no structures within the area affected by the Sanborn Creek Tract subsidence. <br /> However, there are several landslide features above the proposed underground <br /> workings and OMLLC committed to monitor these features. To date, no impacts <br /> have been noted. <br /> B. The applicant conducted a subsidence monitoring program during the period the <br /> Sanborn Creek Mine was active, in accordance with Rule 2.05.6(6)(c), designed to <br /> determine the commencement and magnitude of subsidence movements. The <br /> monitoring program was designed to extend for a time, beyond cessation of mining <br /> in any area, consistent with the need for verification of the subsidence prediction. <br /> For the Elk Creek Mine, the applicant conducted an inventory of"all structures and <br /> renewable resource lands which exist within the proposed permit and adjacent <br /> area" as required by Rule 2.05.6(6)(a). The determination was that no such <br /> structures or features exist within the area to be undermined by the Elk Creek <br /> activity. Therefore, no further action was required. The operator,though, <br /> submitted a subsidence evaluation for the area, which can be found in Exhibit 2.05- <br /> E8 (Vol. 12) of the PAP. Visual subsidence surveys are to be conducted in June <br /> and October, and the results submitted to the Division in a written report. <br /> XVI. Concurrent Surface and Underground Mining <br /> 26 <br />
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