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REV93319
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REV93319
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Entry Properties
Last modified
8/25/2016 3:14:39 AM
Creation date
11/21/2007 11:29:29 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981033
IBM Index Class Name
Revision
Doc Date
11/7/1994
Doc Name
TR SUBSIDENCE MONITORING BEAR COAL CO PN C-81-033
From
DMG
To
TONY WALDRON
Type & Sequence
TR20
Media Type
D
Archive
No
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i <br />Tony Waldron <br />Station U2 <br />Station U3 <br />Station U4 <br />Station US <br />Station U8 <br />Station U9 <br />-2- <br />Additional impacts projected. Keep monitoring. <br />Additional impacts projected. Keep monitoring. <br />November 7, 1994 <br />Vertical displacement may correspond with spring 1993 slide activity. Keep <br />monitoring. <br />Additional mining impacts projected. Keep monitoring. This station shows <br />considerable variability. <br />This monument shows considerable variability, and monitoring should <br />continue. <br />Additional mining impacts are projected. Keep monitoring. <br />Station U10 Monitors the landslide(s), and movement is variable. This site should still be <br />monitored. Movement seems to correspond to spring 1993 slide activity. <br />Station Ul l Monitors the landslide(s), and a vertical change seems to correspond with <br />spring 1993 slide activity. Keep monitoring. <br />Station U21 Monitors the landslide(s). Monitoring should continue. <br />Station U22 Monitors the landslide(s). Monitoring station should be reestablished, and <br />monitoring should continue. The operator should verify that reestablishment <br />of the station will occur. <br />Stations U25. U26. U27 <br />Monitoring of these stations must be left open-ended at this time. Additional <br />mining impacts are anticipated; monitoring beyond 1996 may be necessary. <br />This matter can be readdressed in the future. <br />2. A monitoring reduction can be reconsidered if a detailed study is performed which assesses <br />the current surficial slide features, relative to the ancient slide bodies of historic concern, and <br />Bear Mine subsidence. This study should be conducted by an individual or group expert in <br />this field. Recommendations include John Ivy, Michael Bukovanski, the USGS or the CGS. <br />DAB/bjw <br />M:\OSS\B1W\DAB.BCC <br />
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