2011-09-26_PERMIT FILE - C1981012 ‎(24)‎

• Permit No: C1981012
• IBM Index Class Name: Permit File
• Doc Date: 9/26/2011
• Section_Exhibit Name: EXHIBIT 08 HYDROLOGY AND GEOLOGY INFORMATION
• Media Type: D
• Archive: No

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Probable Hydrologic Consequences New Elk Mine i
TABLE OF CONTENTS
1. INTRODUCTION ....................................................................................................... ..............................1
2. MINE HISTORY AND PLANNED OPERATION .................................................... ..............................1
3. HYDROGEOLOGIC SETTING ................................................................................. ..............................3
3.1 Geology .................................................................................................... ..............................3
3.2 Hydrogeology .......................................................................................... ..............................6
3.2.1 Alluvial Aquifer .......................................................................... ..............................7
3.2.2 Raton Aquifer ............................................................................ .............................11
3.2.3 Vermejo Aquifer ........................................................................ .............................13
4. SURFACE WATER HYDROLOGY ......................................................................... .............................13
4.1 Purgatoire River ...................................................................................... .............................13
4.2 Apache Canyon ....................................................................................... .............................15
4.3 Ciruela Canyon ....................................................................................... .............................16
4.4 Springs and Seeps ................................................................................... .............................16
2010 HYDROLOGIC SUTDIES AT THE NEW ELK MINE ......................................... .............................17
4.5 Monitoring Well Installation ................................................................... .............................17
4.6 Packer Permeability Testing ................................................................... .............................17
5. WATER LEVELS AND WATER QUALITY IN THE FLOODED NEW ELK MINE ........................23
6. SUBSIDENCE PREDICTIONS FOR MINING OF THE ALLEN AND APACHE COAL SEAMS ...24
7. PROBABLE HYDROLOGIC IMPACTS OF MINING IN THE APACHE AND ALLEN COAL
SEAMS..................................................................................................................... ............................... 26
8. REFERENCES ........................................................................................................... .............................29
LIST OF APPENDICES
Appendix A Well Completion Diagrams
Appendix B Packer Testing Data
11 BEEN 1 to] 1911"
PR 02
Exhibit 8(4) Page 120
Whetstone Associates
Revised 1/31/11