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PERMFILE47383
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PERMFILE47383
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Entry Properties
Last modified
8/24/2016 10:49:25 PM
Creation date
11/20/2007 1:07:56 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981038A
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
2.05.6(3)(b) to end
From
p. 100 to 164
Section_Exhibit Name
PART 2.05 Operations and Reclamation Plans Part 3
Media Type
D
Archive
Yes
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• <br />• <br /> <br />2.05 APPLICATION FOR PERDfPP FOR SURFACE OR I1fIDE~U1~ID ~.DVG ACPIVI'FZE4S -- <br />MINIMIIl3 REQUII2EMENlS EI~R OPERATION AND RDCLAMATION PLANSS. <br />2.05.6 Mitigation of Surface Coal MiTfiM Operation Eaipacts. (Cont'd.) <br />subsidence survey, Section 2.05.6(6)(e). Monuments have and will <br />continue to be installed and surveyed prior to the ant of <br />mining in any given area. Refer to Map No. 3-1. 'Ihe Subsidence <br />monitoring program is required to verify predictions of subsidence <br />related phenom~~a derived in the subsidence survey (refer to Geo-Hydra <br />report in the Subsidence Appendix, Volume 3). <br />Actual placement of monuments is found in Section 2.05.6(6)(c)(i)(B). <br />(6) (c) (i) (B) <br />Colorado Westmoreland Inc. currently operates three separate subsidence <br />monitoring programs: visual inspection; widely spaced monument <br />monitoring; and detailed panel mornnnent monitoring. <br />~~ 5yT' The visual inspection consists of a physical walk over on the surface <br />of pillar recovery areas one time per year. Features such as tension <br />cracks aril compression bulges are mapped and described. Also included <br />c~ S~ during the initial ~t term is a visual inspection of landslide <br />\U~ a,-r~aG to ascertain if pillar recovery and subsidence reactivates <br />movement, scarp development, or-associated detachment. Future pre- and <br />past-mining inspections of structures will also be incorporated. <br />Surficial hydrological features are monitored monthly to determine <br />possible impacts of subsidence. Additionally, areas of underground <br />mine inflow are monitored and mapped on an annual basis in accordance <br />with Stipulation No. 29 (as attached to the July 21, 1988 Proposed <br />Decision and Findings of compliance). A summary of the mine inflow <br />monitoring findings is submitted along with the "Annual Hydrology and <br />Subsidence Report" as the "Annual Mine Inflow Report." <br />Monitoring stations 1 through 27 consist of a widely spaced grid with <br />approximately 1300 ft. centers east-west <br />MR 92-80 <br />Revised 2/11/92 <br />145 <br />
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