GENERAL52965

• Permit No: M1988112
• IBM Index Class Name: General Documents
• Doc Date: 9/17/1999
• Doc Name: RESPONSE ACTIONS PROPOSED IN THE WEST PIT AREA SAN LUIS PROJECT COSTILLA CNTY COLO
• Media Type: D
• Archive: No

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TABLE OF CONTENTS
INTRODUCTION ..............................................................................................................1
1.1 Purpose of the Response Plan ...................................................................................... l
2.0 PROPOSED RESPONSE PLAN ......................................................................................3
' 2.1 Phase I -Interim Water Treatment ..............................................................................4
2.2 Phase II -Active Wa[er Treatment .............................................................................7
' 2.3 Phase III -Maintenance of Hydrologic Conditions ....................................................8
2.4 Hydraulic Barrier .........................................................................................................9
1 3.0 MONITORING PLAN ....................................................................................................11

LIST OF FIGURES
' Figure 1-1 West Pit Monitoring Wells and Surface Water Stations
Figure 2-1 Process Flow Diagram
' Figure 2-2 Water Treatment Facilities Layout
Figure 2-3 Schematic of Slurry Wall Application
' Figure 2-4 Schematic Cross-Section Showing Water Level Relationships with a Slurry Wall
Figure 2-5 Conceptual Water Level Contour Map for Slurry Wall Option

LIST OF APPENDICES
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' Bat!!e Moumain Resources, /nc. .Shepherd Miller, /nc.
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