GENERAL37230

• Permit No: C1980007
• IBM Index Class Name: General Documents
• Doc Date: 9/21/1993
• Doc Name: REPORT LANDSLIDE INVESTIGATION REPORT JUMBO MOUNTAIN SOMERSET COLO FOR ARCO COAL CO PROJECT # 2272-0
• Permit Index Doc Type: PUBLIC CORRESPONDENCE
• Media Type: D
• Archive: No

TABLE OF CONTEA'TS
Page
INTRODUCTION ............................................ 1
SCOPE OFINVFSTIGATION .................................... 1
RESULTS OF IIdVESTIGATION .................................. 1
Surface Extent of Landslide Movements .............................. 2
Depth of Landslide ........................................... 2
Nature of Landslide Materials ..................................... 10
Current Instability ............................................ 10
Nature of Lineaments .......................................... 11
DISCUSSION ..............................................11
CONCLUSIONS .............................................13
LIST OF FIGURES
Number Paee
1 Plan of Iumbo Mountain Landslide ......................... 3
2 Location of Cross-Sections .............................. 4
3 Cross-Sections SNl and SN2 ............................ 5
4 Cross-Sections SN3 and SN4 ............................ 6
5 Cross-Secfions SNS and SN6 ............................ 7
6 Bedrock Elevation ................................... 8
7 Colluvium Isopach Map ............................... 9
8 Base of 'B' Seam ................................... 12

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