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Battle Mountain Resources,Inc. <br /> San Luis Project <br /> P.O. Box 310 <br /> San Luis, Colorado 81152-0310 <br /> (719)379-0798 <br /> April 8, 2022 ����t��� <br /> � <br /> APR � 1 ���'� <br /> Mr. Lucas J. West <br /> State of Colorado DIVI�ION OF RECLAMATION, <br /> Colarado Department of Reclamation, Mining,& Safety MINI�!G &SAFETY-MINERALS <br /> 1313 Sherman Street, Room 215 <br /> Denver, CO 80203 <br /> Re: Battle Mountain Resources,Inc. <br /> San Luis Project- M-88-112 <br /> March 2022 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 March 2022. Surface and groundwater monitoring and <br /> 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 /> Tailin�Facilitv/Leak Detection Svstem <br /> The six lysimeters which are a part of the Lined Tailing Facility(LTF)leak detection system were inspected <br /> and verified for proper vacuum and operation. As shown in Table 1,there was no pore space water found <br /> to be present in any of the six lysimeter collection pans, therefore, no sampling or laboratory analysis was <br /> required. <br /> Table 1—Monthly Lysimeter Monitoring <br /> L simeter ldentification Observation Date De th to Water feet <br /> LS 1 R2 03/3 I/2022 DRY <br /> LS2R2 03/31/2022 DRY <br /> LS3R 03/31/2022 DRY <br /> LD 1 R2 03/31/2022 DRY <br /> LD2R2 03/31/2022 DRY <br /> LD3R 03/31/2022 DRY <br /> The ten piezometers located on the tailing impoundment main embankment were inspected and measured <br /> far 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 twelve inches of water. <br />