PERMFILE61656

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: Exhibit 04e-3 Northern Mining District Subsidence Evaluation
• Media Type: D
• Archive: No

• Table of Contents
1. INTRODUCTION .................................:.....................................................................1
2. SUBSIDENCE PREDICTION ....................................................................................1
2.1 Subsidence Monitoring Requvements .......................................................................................................... 2
3. EVALUATION OF IMPACTS TO THE ENERGY SPUR TRACK ..............................2
3.1 Scope of Work .............................................................................................................................................. 2
32 Predicted Subsidence .................................................................................................................................... 3
3.3 Impact Mitigation ......................................................................................................................................... 3
3.4 Monitoring Requirements ............................................................................................................................. 3
4. EVALUATION OF IMPACTS TO FISH CREEK AND ITS ALLUVIAL VALLEY
FLOOR (AVF) ................................................................................................................. 3
4.1 Scope of Work .............................................................................................................................................. 4
4.2 Approach ....................................................................................................................................................... 4
4.3 AVF Subsidence Predictions ........................................................................................................................ 5
4.4 Predicted Impacts to the AVF ....................................................................................................................... 5
4.4.1 Increase in Fish Creek's Surface Area .................................................................................................. 5
4.4.2 Potential for Fissure Development and Water Loss .............................................................................. 6
5. EVALUATION OF IMPACTS TO FOIDEL CREEK ...................................................6
6. MONITORING REQUIREMENTS .............................................................................6
7. CONCLUSIONS AND RECOMMENDATIONS .........................................................6
•
PN: 98-12