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r -ft". <br />BATTLE MOUNTAIN RESOURCES, INC. <br />June 6, 2015 <br />Mr. Wally Erickson <br />State of Colorado <br />Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Re: Battle Mountain Resources Inc. <br />San Luis Project <br />CMLRB Permit No.M-88-112_ <br />May 2015 Monthly Report <br />Dear Mr. Erickson: <br />RECEIVED <br />JUN 10 2015 <br />DIVISION OF RECLAMATION <br />MINING AND SAFETY <br />The following summarizes monitoring and site activities at the Battle Mountain Resources Inc. (BMRI), <br />San Luis Project for the month of May, 2015. <br />Surface and ground water monitoring and analysis were completed for all required sites during the month <br />per the terms and conditions of the TR -32 Quality Assurance and Quality Control (QA/QC) plan. <br />Vacuum on the tailing lysimeters was verified on May 27h, no water was present for sampling and <br />subsequent analysis. <br />Depths to water were collected for the tailing impoundment main embankment piezometers and the West <br />Pit monitoring wells on May 27th. May tailing impoundment piezometer measurements identified these <br />installations were either dry or contained less than 12 inches of water as illustrated in Table 2. Tables 1 <br />and 2 below identify the depth to water measurements collected for each of the site monitoring wells, <br />piezometers and lysimeters as required by the terms and conditions of the TR -32 QA/QC plan. <br />The leak detection system was measured on May 27th. A total of 900 gallons of water was excavated from <br />the leak detection system yielding a monthly average of 32.1 gpad. The tailings pond under -drain <br />measured 38.5 gpm. <br />During the month of May, the West Pit water treatment plant operated efficiently discharging a total of <br />7,672,200 gallons (23.55 acre-feet) of water to Rito Seco Creek and a total of 750,800 gallons (2.30 acre- <br />feet) of water was transferred from the West Pit to the tailings impoundment. Seepage along Rito Seco <br />Creek remained dry during the month. <br />P.O. Box 310 - San Luis, Colorado 81152-0310 - (719) 379-0798 - Fax (719) 379-0713 <br />