PERMFILE41476

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 6/2/2006
• Section_Exhibit Name: Master Table of Contents
• Media Type: D
• Archive: Yes

West Elk Mine
Contents (Continued)
Coal Seams and Related Strata ...........................................2.04-22
B-Seam ................................................................................... 2.04-22
E-Seam ................................................................................2.04-27
F-Seam ................................................................................2.04-32
Structural Geology ................................................................................2.04-33
Geologic Surface Features ....................................................................2.04-34
Prominent Fracture Zones .................................................. 2.04-34
Weathering and Burn .......................................................... 2.04-36
Effects of Slopes .................................................................... 2.04-36
Steep Topography .................................................................2.04-36
Geologic Hazards and Slope Stability ................................................. 2.04-37
Landslides .............................................................................. 2.04-38
Deep Landslides ....................................................................2.04-38
Shallow Colluvial Slides .......................................................2.04-42
Debris Avalanches ................................................................2.04-42
Debris Flows .......................................................................... 2.04-42
Potentially Unstable Slopes .................................................. 2.04-43
Rockfall .................................................................................. 2.04-43
Seismic Effects ...................................................................... 2.04-44
Ground Subsidence ..............................................................2.04-44
Other Geologic Factors that May Affect Mining Conditions ...........2.04-44
•
Groundwater .................................................................. ....... 2.04-44
Sandstone Channel Deposits ......................................... .......2.04-48
Rolls ................................................................................ ....... 2.04-48
Rock Spars ..................................................................... ....... 2.04-48
Seam Discontinuities ............................................................2.04-48
Soft Shales ...................................................................... ....... 2.04-49
Methane .......................................................................... ....... 2.04-49
2.04.7 Hydrology Description ............................................................ ....... 2.04-51
2.04.7(1) Groundwater Information ................................................. .......2.04-51
Regional Groundwater Conditions .................................. ....... 2.04-53
Site Hydrogeology ........................................................... ....... 2.04-58
Baseline Monitoring Program ......................................... ....... 2.04-59
2.04.7 (2) Surface Water Information .............................................. ....... 2.04-78
Surface Water Resources ................................................. ....... 2.04-78
Baseline Monitoring Program ......................................... ....... 2.04-83
Spring Monitoring ........................................................... ....... 2.04-87
Surface Water Quantity ................................................... .......2.04-92
Streams ......................................................................... .......2.04-92
Surface Water Quality ..................................................... ..... 2.04-105
2.04.7(3) Alternative Water Supply Information ............................. .....2.04-114
2.04.8 Climatological Information .................................................. ....2.04-115
Temperature ........................................................ ....2.04-115
Ill Rev. March 1006; Rev. Apri! 1006 PRIG; Rev. May 2006 PRIO