2023-09-07_REPORT - M1988112

• Permit No: M1988112
• IBM Index Class Name: Report
• Doc Date: 9/7/2023
• Doc Name: Monthly Report
• From: Battle mountain Resources, Inc
• To: DRMS
• Annual Report Year: 2023
• Report Quarter_Month: Aug
• Email Name: LJW
• Email Name: THM
• Media Type: D
• Archive: No

Mr.Lucas J.West
September 5,2023
Page 2
Table 2-Monthly Piezometer Elevations
Monitoring Well Piezometer Depth Depth to Water Depth of Water
Identification Observation Date ft ft ft
P6 08/29/2023 72.46 DRY N/A
P7 08/29/2023 92.50 DRY N/A
P8 08/29/2023 97.51 96.63 0.88
P9 08/29/2023 72.30 71.95 0.35
Plo 08/29/2023 58.30 57.48 0.82
Pi 1 08/29/2023 41.80 41.40 0.40
P12 08/29/2023 41.71 41.64 0.07
P13 08/29/2023 41.34 41.01 0.33
P14 08/29/2023 41.24 DRY N/A
P15 1 08/29/2023 1 41.10 1 40.86 1 0.24
The leak detection system at the LTF Collection Pond was inspected August 31, 2023, and 870 gallons were evacuated
from the leak detection system and pumped to the LTF. The LTF underdrain system was visually inspected August 31,
2023,and the flow rate was measured to be approximately 25.0 gallons per minute(gpm).
West Pit Waste Water Treatment Plant
During the month of August 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, 8,195,000 gallons (25.15 acre-feet)
of treated water was discharged to the Rito Seco and 394,500 gallons (1.21 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 August.
BMRI performed the monthly visual seepage expression inspections on August 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
BF-4 8/31/2023 24.90
BF-511 8/31/2023 30.80
BF-6 8/31/2023 30.92
M-6 8/31/2023 DRY
M-7 8/31/2023 DRY
M-8 8/31/2023 DRY
M-9 8/31/2023 141.14
M-10 8/31/2023 24.22
M-11 R 8/31/2023 39.79
M-12 8/31/2023 174.26
M-13R 8/31/2023 125.55
M-14 8/31/2023 130.42
M-16 8/31/2023 22.78
M-17 8/31/2023 30.16