2023-11-07_REPORT - M1988112

• Permit No: M1988112
• IBM Index Class Name: Report
• Doc Date: 11/7/2023
• Doc Name: Monthly Report
• From: Battle Mountain Resources, Inc
• To: DRMS
• Annual Report Year: 2023
• Report Quarter_Month: Oct
• Email Name: LJW
• Email Name: THM
• Media Type: D
• Archive: No

Mr.Lucas J.West
November 6,2023
Page 2
Table 2-Monthly Piezometer Elevations
Monitoring Well Piezometer Depth Depth to Water Depth of Water
Identification Observation Date ft ft ft
P6 10/31/2023 72.46 DRY N/A
P7 10/31/2023 92.50 DRY N/A
P8 10/31/2023 97.51 96.62 0.89
P9 10/31/2023 72.30 71.95 0.35
Plo 10/31/2023 58.30 57.49 0.81
I'll 10/31/2023 41.80 41.40 0.4
P12 10/31/2023 41.71 41.62 0.09
P13 10/31/2023 41.34 41.01 0.33
P14 10/31/2023 41.24 DRY N/A
P15 10/31/2023 41.10 40.85 1 0.25
The leak detection system at the LTF Collection Pond was inspected October 31,2023,and 880 gallons were evacuated
from the leak detection system and pumped to the LTF. The LTF underdrain system was visually inspected October 31,
2023,and the flow rate was measured to be approximately 26.6 gallons per minute(gpm).
West Pit Waste Water Treatment Plant
During the month of October 2023,the West Pit Waste Water Treatment Plant (WWTP) was operated intermittently
(3 to 4 days per week) under Colorado Department of Public Health and Environment (CDPHE) CDPS Permit No.
C00045675 for discharge into the Rito Seco alluvial aquifer. During the month, 7,280,000 gallons (22.34 acre-feet)
of treated water was discharged to the Rito Seco and 633,600 gallons (1.94 acre-feet) of water was transferred from
the West Pit to the Lined Tailing Facility (LTF). Additionally, no water was reinfiltrated into the West Pit in
October.
BMRI performed the monthly visual seepage expression inspections on October 31, 2023, in the historic seepage
area identified in Figure 2 of the permit. No seepage expressions were observed in the historic seepage area.
BMRI measured the monthly West Pit backfill, alluvial and monitoring wells as required under in the QA/QC Plan.
Measurements obtained for the monthly wells are shown in Table 3.
Table 3-Monthly and Quarterly Groundwater Depth to Water
Monitoring Well Identification Observation Date Depth to Water
ft
BF4 10/31/2023 24.88
BF-511 10/31/2023 30.81
BF-6 10/31/2023 30.93
M-6 10/31/2023 DRY
M-7 10/31/2023 DRY
M-8 10/31/2023 DRY
M-9 10/31/2023 141.33
M-10 10/31/2023 24.33
M-11 R 10/31/2023 40.22
M-12 10/31/2023 174.59
M-13R 10/31/2023 125.79
M-14 10/31/2023 130.59
M-16 10/31/2023 22.78
M-17 1 10/31/2023 1 30.23