2025-09-29_REVISION - M1980244 ‎(4)‎

• Permit No: M1980244
• IBM Index Class Name: Revision
• Doc Date: 9/29/2025
• Doc Name Note: 2 VLF Expansion Design Report
• Doc Name: Adequacy Review Response #2
• From: CC&V
• To: DRMS
• Type & Sequence: AM14
• Email Name: ERR
• Email Name: ZTT
• Media Type: D
• Archive: No

5.1.3. Material Properties ........................................................................................ 18
5.1.4. Stability Evaluation Results ............................................................................ 20
5.2. Settlement Evaluation .................................................................................................. 2 1
5.2.1. Model Development ...................................................................................... 22
5.2.2. Material Properties ........................................................................................ 22
5.2.3. Settlement Evaluation Results ....................................................................... 23
6. WATER BALANCE ................................................................................................................. 24
6.1. General ......................................................................................................................... 24
6.2. System Analysisfeasibility ............................................................................................. 2 4
6.2.1. System Inflow Evaluation ............................................................................... 24
6.2.2. System Outflow Evaluation ............................................................................ 25
7. REFERENCES ......................................................................................................................... 25

LIST OF TABLES
Table 5.1 –Stability Evaluation Material Properties .................................................................... 18
Table 5.2 – Calculated Minimum Factors of Safety ..................................................................... 21
Table 5.3 – Material Properties ................................................................................................... 22

LIST OF FIGURES
Figure 1 VLF1 and VLF2 Grading Plan
Figure 2 Ultimate Ore Stacking Plan
Figure 3 Cross Sections (1 of 2)
Figure 4 Cross Sections (2 of 2)
Figure 5 PSSA Filling Curve

LIST OF DRAWINGS
A000 Cover
A001 General Arrangement
A002 Site Geology Map
A003 Historic Underground Workings
A004 Table of Historic Underground Workings (1 of 3)
A005 Table of Historic Underground Workings (2 of 3)
A006 Table of Historic Underground Workings (3 of 3)
A007 Geotechnical Investigation Plan
A008 VLF Expansion Overall Grading Plan
A009 VLF Expansion Pad Isopach
A010 Limits of Geomembrane Plan
A011 Ore Stacking Plan
A012 VLF2 Phase 4 Stage A Grading Plan
A013 VLF2 Phase 4 Stage B Grading Plan
A014 VLF1 Phase 6 Stage A Grading Plan
A015 VLF1 Phase 6 Stage A PSSA Grading Plan
A016 VLF1 Phase 6 Stage B Grading Plan