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C.� <br /> BATTLE MOUNTAIN RESOURCES, INC. <br /> October 9, 2017 RECEIVED <br /> 4-11 OCT 13 2017 <br /> DIVISION OF RECLAMATION <br /> WI,IINGAM SA_FM <br /> Mr.Lucas J.West <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 i- <br /> v September 2017 Monthly Report <br /> Dear Mr. Lucas: <br /> The following summarizes monitoring and site activities at the Battle Mountain Resources Inc. (BMRI), <br /> San Luis Project for the month of September 2107. <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 September 28`h, 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 September 28t'. The September tailing impoundment piezometer measurements <br /> identified these installations were either dry or contained less than 12 inches of water as illustrated in <br /> Table 2. Tables 1 and 2 below identify the depth to water measurements collected for each of the site <br /> monitoring wells, piezometers and lysimeters as required by the terms and conditions of the TR-32 <br /> QA/QC plan. <br /> The leak detection system was measured on September 28`h. A total of 880 gallons of water was <br /> excavated from the leak detection system yielding a monthly average of 31.4 gpad. The tailings pond <br /> under-drain measured 38.2 gpm. <br /> During the month of September,the West Pit water treatment plant operated efficiently discharging a total <br /> of 6,833,300gallons(20.97 acre-feet)of water to Rito Seco Creek and a total of 293,700 gallons(.90 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 />