2008-03-21_PERMIT FILE - C1980007A ‎(8)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 3/21/2008
• Section_Exhibit Name: Exhibit 60E Subsidence Evaluation for the South of Divide & Dry Fork Mining Areas
• Media Type: D
• Archive: Yes

• 10.3 Importance of Baseline Landslide and Rockfall Data .............................................22
11.0 EFFECTS OF SUBSIDENCE AND MINE-INDUCED SEISMIC ACTIVITY ON
MAN-MADE STRUCTURES AND RENEWABLE RESOURCES ................................ .....24
11.1 Minnesota Reservoir ......................................................................................... ..... 24
11.2 Stock Watering Ponds and U.S. Forest Service Water Resources ................... .....24
11.3 Streams and Ditches ......................................................................................... .....25
11.3.1 Potential for Hydraulic Connection Between Mine Workings and Surface ......... ...... 26
11.4 Springs, Water-Bearing Zones, and Ground Water Wells ................................. .....27
11.4.1 Springs ................................................................................................................ ......27
11.4.2 Water-Bearing Zones .......................................................................................... ...... 28
11.4.3 Ground Water Wells ............................................................................................ ...... 28
11.5 Roads .................................................................................................................... 28
11.6 Buildings ............................................................................................................ .....29
11.6.1 Lower Dry Fork Cow Camp ................................................................................. ...... 29
11.6.2 Minnesota Creek Ditch Rider's Cabin ................................................................. ...... 29
12.0 IMPACTS BENEATH THE MINED E COAL SEAM ..........................................................30
13.0 POSSIBLE SUBSIDENCE CONSEQUENCES .................................................................31
14.0 POTENTIAL IMPACTS FROM LOCAL SEISMIC ACTIVITY ............................................32
15.0 SUBSIDENCE CONTROL PLAN ................................................................................ ......33
• 15.1Anticipated Effects ................................................................................................
15.2 Reduction Measures (Underground) ................................................................ ...... 33
...... 33
16.0 OVERVIEW OF 2007 SUBSIDENCE OBSERVATIONS IN ACTIVE MINING
AREAS ......................................................................................................................... ...... 34
17.0 SUMMARY AND CONCLUSIONS .............................................................................. ...... 35
18.0 REFERENCES ............................................................................................................. ......38
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