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REP19577
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REP19577
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Entry Properties
Last modified
8/24/2016 11:48:15 PM
Creation date
11/27/2007 2:41:10 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Report
Doc Date
8/31/2007
Doc Name
1st Half 2007 Subsidence Report Review Letter
From
Twentymile Coal Company
To
DRMS
Permit Index Doc Type
Subsidence Report
Media Type
D
Archive
No
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performed at least monthly for 3 months following <br />quarterly, commencing mining. Hydrologic monitoring <br />one month prior to the was conducted along the short <br />initiation of mining section of Fish Creek within the <br />beneath any established zone of potential angle of draw. <br />monument or structure. <br /> The report fulfills the <br /> requirement of a semi-annual <br /> report, but it was not submitted <br /> timely. The due date was <br />2.05.6(6)(c)(i)(E) PAP, pages 2.05-185 September August 29, 2007. It <br />Results of the and 2.05-186. Reports was submitted under an undated <br /> are to be submitted 60 letter by hand delivery during a <br />monitoring program <br />shall be submitted to the days after the end of a No Division of Reclamation, Mining <br /> <br />Division at least semi- period. The format of and Safety monthly inspection <br /> <br />annually. the report is at Exhibit on July 18, 2007. Pages of the <br /> 34 of the PAP. report are annotated 7/17/2007. <br /> However, sensitive monitoring, <br /> that under power lines, was <br /> constantly and consistently <br /> provided to the owners. <br />2.05.6(6(c)(i))(F) PAP, Pages 2.05-181.9, <br />Conducted sufficient 2.05-184.7, and 2.05- <br /> <br />post-mining monitoring 184.8 for power lines <br />Yes There was no undermining of the <br /> <br />to verify subsidence and railroad; 2.05- railroad during the report period. <br /> <br />prediction 181.10 and 2.05-184.8 <br /> for Fish Creek. <br /> Yes for In compliance, based the <br /> horizontal reported information and visual <br /> observation of undermined areas. <br />2.05.6(6)(d)(i) movement <br />and Fairly accurate predictions of <br />Accurately predicted damage. subsidence, accurate with regard <br />subsidence Within 20 to predicted damage. There was <br />. for no imminent or actual material <br /> vertical damage or diminution of use of <br /> subsidence. renewable resource lands or <br /> structures. <br />
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