2025-04-11_REVISION - M1988112 ‎(2)‎

• Permit No: M1988112
• IBM Index Class Name: Revision
• Doc Date: 4/11/2025
• Doc Name Note: Appendix D Thru Attachment E Binder 2 of 2
• Doc Name: Request For Amendment To Permit
• From: Battle Mountain Resources, Inc.
• To: DRMS
• Type & Sequence: AM4
• Email Name: LJW
• Email Name: THM
• Email Name: EL1
• Media Type: D
• Archive: No

TABLE 1
West Pit Groundwater Model Budgets
BASE MODEL PITWALL MODEL UPFLOW MODEL
SOURCE OF
GROUNDWATER FLOW PERCENT PERCENT PERCENT
GPM OF TOTAL GPM OF TOTAL GPM OF TOTAL
CURRENT CONDITIONS WITH GROUNDWATER SENT TO TREATMENT PLAN 1)
Upflow N/A r N/A 16.5 8.3%
Recharge 1.0 0.5% 1.5 0.7% 1.0 0.5%
z Santa Fe 0.03 0.02% 0.1 0.03% 0.03 0.02%
o Precambrian 17.9 9.0% 25.8 13.0% 18.0 9.0%
J
Upper Alluvium 151.8 76.1% 134.8 68.1% 134.0 67.6%
North Pit 28.7 14.4% 35.9 18.1% 28.9 14.5%
TOTAL FLOW IN 199.4 198.0 198.4
Water to treatment 189.8 95.2% 189.8 95.8% 189.8 95.6%
O Santa Fe 0.2 0.1% 0.2 0.1% 0.2 0.1%
p Upper Alluvium 9.4 4.7% 8.1 4.1% 8.5 4.3%
TOTAL FLOW OUT 199.4 198.0 198.4
SIMULATION 1 NO ACTION
Upflow N/A N/A 16.5 13.7%
Recharge 1.0 0.9% 1.5 1.2% 1.0 0.9%
z Santa Fe 0.01 0.01% 0.02 0.01% 0.01 0.01%
0 Precambrian 17.5 14.9% 25.2 21.1% 17.5 14.6%
Upper Alluvium 71.6 61.2% 59.1 49.4% 58.3 48.5%
North Pit 27.0 23.0% 33.7 28.2% 26.8 22.3%
TOTAL FLOW IN 117.0 119.6 120.2
D Santa Fe 0.6 0.5% 0.7 0.6% 0.7 0.5%
0
Upper Alluvium 116.4 99.5% 118.9 99.4% 119.5 99.5%
O
2 TOTAL FLOW OUT 117.0 119.6 120.2
1