PERMFILE47574

• Permit No: M2004031
• IBM Index Class Name: Permit File
• Doc Date: 7/28/2004
• Doc Name: First Adequacy Comment Response
• From: Tetra Tech RMC
• To: DMG
• Media Type: D
• Archive: No

TABLE OF CONTENTS
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1.0 INTRODUCTION
2.0 MODEL DEVELOPMENT ..........................................................................................................1
2.1 Model Framework ............................................................................................................ l
2.2 Boundary Conditions and Water Bodies ..........................................................................2
2.3 Aquifer Properties ............................................................................................................2
2.4 Recharge ...........................................................................................................................4
3.0 MODEL SIMULATIONS .........................................
3.1 Simulation Approach ....................................
3.2 Pre-Mine Simulation Results ........................
3.3 Mining and Post-Mining Simulation Results
4.0 CONCLUSIONS AND RECOMMENDATIONS
5.0 LIMITATIONS .....................................................
6.0 REFERENCES .....................................................
List of Figures
Figure 1 Hazeltine Vicinity Map
Figure 2 Hazeltine Model Area with Site Features and Boundary Conditions (Pre-Mining)
Figure 3 Hazeltine Area Geology
Figure 4 Groundwater Elevation Contours -Observed vs. Simulated (Quasi-Steady State)
Figure 5 Simulated Maximum Change in Groundwater Levels, During-Mining (Wet Season)
Figure 6 Simulated Maximum Change in Groundwater Levels, During Mining (Dry Season)
Figure 7 Simulated Maximum Change in Groundwater Levels, Post-Mining (Wet Season)
Figure 8 Simulated Maximum Change in Groundwater Levels, Post-Mining (Dry Season)
Figure 9 Groundwater Elevation Contours -Simulated Post-Mining (Wet Season)
- i - July 2004
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