1998-01-20_REVISION - M1977342

• Permit No: M1977342
• IBM Index Class Name: Revision
• Doc Date: 1/20/1998
• Doc Name: HENDERSON MINE & MILL PN M-77-342 AMENDMENT
• From: CLIMAX MOLYBDENUM CO
• To: MLRB
• Type & Sequence: AM3
• Media Type: D
• Archive: No

• Table of Contents
1.0 INTRODUCTION......................................................................................... 1
2.0 THE AMENDMENT..................................................................................... 3
2.1 Purpose for Increase in Affected Land..................................................... 4
2.2 Scope....................................................................................................... 4
2.2.1 Project Description (Exhibit D)............................................................ 5
2.2.2 Site Preparation, Earthwork, and Construction .................................. 9
2.3 Environmental Information ..................................................................... 10
3.0 RECLAMATION PLAN (Exhibit E) ............................................................ 10
3.1 Post-mining Land Use............................................................................ 10
3.2 Goals and Objectives............................................................................. 10
3.2.1 Henderson Portal to PC2 Drivehouse .............................................. 11
3.2.2 PC2 Drivehouse to PC3 Station 70+00............................................ 12
3.2.3 PC3 Station 70+00 to Station 215+53.............................................. 12
3.3 Applicable Requirements ....................................................................... 12
3.4 Selected Reclamation Methods.............................................................. 15
3.4.1 Wetlands .......................................................................................... 16
3.4.2 Upland Forest Reclamation.............................................................. 16
3.5 Construction Phase................................................................................ 17
• 3.5.1 Clearing and Grubbing ..................................................................... 17
3.5.2 Topsoil Removal and Stockpiling ..................................................... 18
3.5.3 Corridor Excavation.......................................................................... 19
3.5.4 Post Construction Slope Configurations........................................... 19
3.6 Interim Reclamation ............................................................................... 20
3.6.1 Stabilization...................................................................................... 20
3.6.2 Interim Revegetation ........................................................................ 21
3.7 Facility Decommissioning Phase............................................................ 23
3.8 Final Reclamation................................................................................... 24
3.8.1 Site Backfill and Regrading .............................................................. 24
3.8.2 Site Preparation................................................................................ 27
3.8.3 Topsoil Replacement........................................................................ 28
3.8.4 Revegetation .................................................................................... 28
4.0 COSTING INFORMATION........................................................................ 30
pErprt
i
Jaluary 16,1wa
Plan Ooc