PERMFILE102501

• Permit No: M2003091
• IBM Index Class Name: Permit File
• Doc Date: 6/30/2004
• Doc Name: Groundwater Study
• From: Applegate Group
• To: DMG
• Media Type: D
• Archive: No

TABLE OF CONTENTS
INTRODUCTION ........................................................................... 1
EXISTING HYDROGEOLOGIC CONDITIONS .........................2
DUCKWORTH PIT GROUNDWATER MODEL .........................3
MODEL DEVELOPMENT- ASSUbII'T10NS ................................................................................................ ...............................................J
MODEL DEVELOPMENT- C.ONCEPNALIZATION AND CALIBRATION .............................................. ...............................................5
SIMULATION OF IMPACTS OF MIMNG OPERATION ............................................................................... ...............................................5
SIMULATION OF RECLAMATION OF THE $ITE ......................................................................................... ...............................................G
SENSITIVITY ANALYSIS ................................................................................................................................ ...............................................G
CONCLUSIONS AND RECOMMENDATIONS ..........................8
TABLE OF FIGURES
FIGURE-1 ................................................................GENERAL VICINITY MAP
FIGURE-2 ....................................................................CONCEPTUAL MODEL
FIGURE-3 .......................................HISTORICGROUNDWATER ELEVATIONS
FIGURE-4 ....................................... BASELINE ELEVATION CONTOURS
FIGURE-5 ...................MINING GROUNDWATER ELEVATION CONTOURS
FIGURE-6 ........................... RECLAMATION GROUNDWATER CONTOURS
Lafarge West, Inc. Applegate Group, Inc.
Duckworth Pit Groundwater Study March, 2004