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Battle Mountain Resources,Inc. RECEIVED <br /> San Luis Project <br /> P.O.Box 310 <br /> San Luis, Colorado 8 1 1 52-03 1 0 JAN 8 2026 <br /> (719)379-0798 <br /> DIVISION OF RECLAMATION <br /> MINING AND SAFETY <br /> January 2,2026 <br /> Mr. Lucas J. West <br /> State of Colorado <br /> Colorado Department of Reclamation, Mining,& Safety <br /> 1313 Sherman Street,Room 215 <br /> Denver, CO 80203 <br /> Re: Battle Mountain Resources, Inc. <br /> San Luis Project-M-88-112 <br /> December 2025 Monthly Report <br /> Dear Mr. West: <br /> The following summarizes monitoring and site activities at the Battle Mountain Resources Inc. (BMRI) <br /> "San Luis Project" (M-88-112) for the month of December 2025. Surface and groundwater monitoring <br /> and analysis were completed for all the required sites during the month as specified in the TR-32 Quality <br /> Assurance and Quality Control (QA/QC)Plan. <br /> Tailing Facility/Leak Detection System <br /> The six lysimeters which are a part of the Lined Tailing Facility (LTF) leak detection system were <br /> inspected and verified for proper vacuum and operation. As shown in Table 1, there was no pore space <br /> water found to be present in any of the six lysimeter collection pans, therefore, no sampling or laboratory <br /> analysis was required. <br /> Table 1 —Monthly Lysimeter Monitoring <br /> Lysimeter Identification Observation Date Depth to Water(feet) <br /> LS1R2 12/31/2025 DRY <br /> LS2R2 12/31/2025 DRY <br /> LS3R 12/31/2025 DRY _ <br /> LD1 R2 12/31/2025 DRY <br /> LD2R2 12/31/2025 DRY <br /> LD3R 12/31/2025 DRY <br /> The ten piezometers located on the tailing impoundment main embankment were inspected and measured <br /> for depth to water. The depths to water found for each piezometer are shown in Table 2. All piezometers <br /> were either dry or contained less than 12 inches of water. <br />